RF Amplifiers
Products (11)
ADL5545 - 24dB RF/IF Gain Block 30MHz-6GHz | Analog Devices
The ADL5545 is a single-ended RF/IF gain block amplifier from Analog Devices, offering broadband operation from 30 MHz to 6 GHz. It provides a fixed gain of 24.1 dB, which is stable over frequency, temperature, power supply, and device-to-device variations. The amplifier is offered in the industry-standard SOT-89 package and is internally matched to 50 Ω at the input and output, simplifying implementation in a wide variety of applications. The only external components required are input/output AC coupling capacitors and a bias inductor, making the ADL5545 easy to integrate into RF signal chains. An RF gain block is a type of amplifier used to boost signal power in radio frequency systems, typically placed between stages to compensate for insertion losses. It is a fundamental building block in RF front-ends, often following a mixer or filter and preceding a power amplifier or antenna. Gain blocks are characterized by parameters such as gain, bandwidth, output third-order intercept point (OIP3), noise figure, and supply current. The ADL5545 belongs to the category of broadband gain blocks, which are essential in applications requiring flat gain across a wide frequency range. Key features of the ADL5545 include a fixed gain of 24.1 dB, an OIP3 of over 36 dBm, and a supply current of only 56 mA from a 5 V supply. The device operates over a frequency range of 30 MHz to 6 GHz, covering many communication bands including cellular, ISM, and Wi-Fi. The SOT-89 package is a standard surface-mount package with a thermal pad, allowing for efficient heat dissipation. The amplifier is internally matched to 50 Ω, eliminating the need for external matching networks and reducing component count. Technically, the ADL5545 uses a Darlington-pair topology with active bias, providing high linearity and stable performance over temperature and supply variations. The active bias circuit ensures consistent operating point, which contributes to the gain stability. The device is designed to operate from a single 5 V supply, with a typical supply current of 56 mA, resulting in a power dissipation of approximately 280 mW. The SOT-89 package has a thermal resistance of about 50°C/W, so adequate PCB copper area is recommended for thermal management. Typical applications for the ADL5545 include cellular base station transceivers, wireless infrastructure, test and measurement equipment, and general-purpose RF amplification. Its wide bandwidth and high linearity make it suitable for both transmit and receive paths. In a typical application, the ADL5545 is placed after a mixer to amplify the IF signal or before a power amplifier to drive it to the required level. When designing with the ADL5545, it is important to provide proper AC coupling at the input and output, as the device is internally biased. A bias inductor is required on the output to supply DC power while blocking RF. The ground pad should be soldered to a low-inductance ground plane to ensure thermal and electrical performance. The device is rated for operation over the temperature range of -40°C to +85°C, making it suitable for industrial applications.
ADL5561ACPZ-R7 - 2.9GHz RF/IF Diff Amp | Analog Devices
The ADL5561ACPZ-R7 is a high performance differential amplifier from Analog Devices, optimized for RF and IF applications. It features a -3 dB bandwidth of 2.9 GHz at a gain of 6 dB, low noise of 2.1 nV/√Hz, and excellent distortion performance over a wide frequency range. The device operates from a 3 V to 3.6 V supply and consumes only 40 mA of supply current. It is available in a 16-lead LFCSP-VQ (3x3 mm) package, making it suitable for space-constrained designs. A differential amplifier is an electronic amplifier that amplifies the difference between two input voltages while rejecting common-mode signals. In RF and IF applications, differential amplifiers are used to convert single-ended signals to differential, drive high-speed ADCs, and provide gain with high linearity. The ADL5561 belongs to the class of RF/IF amplifiers, which are essential in communication systems, radar, and test equipment. Key features of the ADL5561 include pin-strappable gain adjust of 6 dB, 12 dB, and 15.5 dB, differential or single-ended input to differential output capability, and a low supply current of 40 mA. The amplifier is designed to drive high-speed 8-bit to 16-bit ADCs, providing low noise and high linearity to preserve signal integrity. Its wide bandwidth and low distortion make it ideal for IF sampling receivers, software-defined radios, and broadband communication systems. The ADL5561 utilizes a differential architecture that provides excellent common-mode rejection and reduces even-order harmonics. The device is specified over a wide temperature range and is RoHS compliant. Its small LFCSP package with exposed pad aids in thermal management, ensuring reliable operation in demanding environments. Typical applications include ADC drivers for communications and instrumentation, IF amplifier stages in receivers, and differential signal conditioning. The ADL5561 is also suitable for driving mixers and other high-speed analog components. When designing with the ADL5561, proper layout and decoupling are critical to achieve the specified performance. Use low-inductance capacitors close to the supply pins and maintain a solid ground plane. The exposed pad should be soldered to the PCB ground for optimal thermal and electrical performance.
ADL8124 - 1-20GHz LNA with Temp Sensor | Analog Devices
The ADL8124 is a highly integrated, dual-channel low noise amplifier (LNA) from Analog Devices, designed for applications operating in the 1GHz to 20GHz frequency range. It is fabricated using advanced GaAs pHEMT technology, delivering a low 2.1dB (typical) noise figure and a typical gain of 15dB across a wide bandwidth. The device operates from a 3.3V supply with a quiescent current of 55mA, and includes on-chip input and output AC coupling capacitors, an integrated bias inductor, an integrated temperature sensor, and an enable/disable pin (VENBL). The ADL8124 is available in a compact 8-lead LFCSP (2x2mm) package, making it suitable for space-constrained RF front-end designs. A low noise amplifier (LNA) is a critical component in RF and microwave receiver chains, placed at the front end to amplify weak signals while adding minimal noise. The LNA's noise figure directly affects the overall system sensitivity, and its gain helps overcome the noise of subsequent stages. In the hierarchy of RF signal chains, the LNA is part of the receiver front-end, which includes filters, mixers, and analog-to-digital converters. The ADL8124's integrated features reduce external component count and simplify PCB design, making it an attractive choice for high-frequency communication systems. Key features of the ADL8124 include its wide frequency coverage from 1GHz to 20GHz, which spans multiple communication bands including 5G, radar, and satellite communications. The integrated temperature sensor allows for real-time monitoring of the device's thermal state, enabling adaptive bias control or system-level thermal management. The enable/disable pin (VENBL) provides flexible power management, allowing the LNA to be shut down when not in use to save power. The on-chip AC coupling capacitors and bias inductor eliminate the need for external matching components, simplifying the design and reducing board space. Technically, the ADL8124 is designed using GaAs pHEMT technology, which offers excellent high-frequency performance with low noise and high gain. The device is specified at VDD = 3.3V, IDQ = 55mA, with a bias resistance (RBIAS) of 1540Ω and VENBL = 3.3V. The typical noise figure of 2.1dB and gain of 15dB are achieved across the entire 1-20GHz band, making it a versatile solution for various RF applications. The integrated temperature sensor provides a voltage output proportional to temperature, which can be read by an ADC for monitoring purposes. Typical applications for the ADL8124 include 5G base stations, radar systems, satellite communications, point-to-point radios, and test and measurement equipment. Its wide bandwidth and low noise figure make it ideal for receiver front-ends in these systems, where signal integrity is paramount. The compact LFCSP package and integrated features allow for dense PCB layouts, which is essential in modern RF modules. When designing with the ADL8124, it is important to ensure proper thermal management, as the device dissipates power during operation. The enable pin can be used to power down the LNA when not in use, reducing overall system power consumption. Additionally, the bias resistor (RBIAS) should be selected according to the datasheet recommendations to achieve the desired quiescent current and performance.
ADL8124ACPZ - 1-20GHz LNA with Temp Sensor | Analog Devices
The ADL8124ACPZ is a highly integrated, 1GHz to 20GHz low noise amplifier (LNA) from Analog Devices, designed for general-purpose RF and microwave applications. It operates from a 3.3V supply with a quiescent current of 55mA, and features on-chip input and output AC coupling capacitors, an integrated bias inductor, an integrated temperature sensor, and an enable/disable pin (VENBL). The device is housed in a compact 8-lead LFCSP (2x2 mm) package, making it ideal for space-constrained designs. A low noise amplifier (LNA) is a critical building block in RF receivers, placed at the front end to amplify weak signals while adding minimal noise. The ADL8124 belongs to the class of wideband LNAs, covering 1GHz to 20GHz, which spans multiple communication bands including 5G, satellite, and radar. Its integrated bias inductor and AC coupling capacitors reduce external component count, simplifying PCB design and improving reliability. Key features include a wide frequency range of 1GHz to 20GHz, low noise figure, and high gain, making it suitable for various RF front-end applications. The integrated temperature sensor provides real-time monitoring for thermal management, and the enable pin allows power gating for duty-cycled systems. The device operates from a single 3.3V supply, with a typical quiescent current of 55mA, and includes an exposed pad for thermal and electrical grounding. The ADL8124 uses a GaAs or SiGe process (exact process not specified in available data) to achieve high-frequency performance. The integrated bias inductor and AC coupling capacitors are designed to minimize external components, while the temperature sensor and enable pin add functionality without compromising RF performance. The package ground leads and exposed pad connect directly to the ground plane, with multiple vias recommended for adequate electrical and thermal conduction. Typical applications include 5G base stations, satellite communications, radar systems, and test and measurement equipment. The wide frequency range and low noise figure make it suitable for both narrowband and wideband receivers. The integrated temperature sensor is particularly useful in high-reliability systems where thermal monitoring is critical. When designing with the ADL8124, ensure proper grounding of the exposed pad and use multiple vias to the ground plane for optimal thermal and electrical performance. The enable pin can be used for power sequencing or duty-cycling to reduce average power consumption.
ADPA1112 - 1-22GHz 15W GaN PA | Analog Devices
The ADPA1112 is a wideband Gallium Nitride (GaN) power amplifier from Analog Devices, covering 1 GHz to 22 GHz with a saturated output power (POUT) of 42 dBm (approximately 15 W). It delivers a power added efficiency (PAE) of 25% and a power gain of 14 dB typical from 8 GHz to 16 GHz at an input power (PIN) of 28.0 dBm. The device is housed in a 14-lead LDCC (9.8x8.2 mm) package, suitable for surface mount assembly. A GaN power amplifier is a high-electron-mobility transistor (HEMT) based amplifier that leverages the wide bandgap of gallium nitride to achieve high power density, high efficiency, and wide bandwidth. In the hierarchy of RF power amplification, GaN PAs sit above silicon LDMOS and GaAs in terms of power handling and frequency range, making them essential for modern radar, electronic warfare, and broadband communication systems. The ADPA1112 is designed for general-purpose amplification across multiple bands, offering a single solution for systems that need to operate from 1 GHz to 22 GHz. Key features include a saturated output power of 42 dBm, PAE of 25%, and a power gain of 14 dB. The wide frequency range of 1 GHz to 22 GHz allows it to cover L, S, C, X, Ku, and K bands, reducing the need for multiple narrowband amplifiers. The device is recommended for new designs, indicating active lifecycle status. It operates from a drain supply voltage, with typical quiescent current and thermal performance specified in the datasheet. Technically, the ADPA1112 uses a GaN-on-SiC process, which provides excellent thermal conductivity and high breakdown voltage, enabling high output power with reliability. The amplifier is internally matched to 50 ohms, simplifying system integration. It requires external bias circuitry and proper thermal management to dissipate heat generated at high output power levels. Typical applications include radar systems, electronic warfare (EW) jammers, satellite communications (SATCOM), and test and measurement equipment. Its wideband nature makes it ideal for software-defined radio (SDR) transmitters and multi-band communication systems where a single PA can cover multiple frequency bands. When designing with the ADPA1112, ensure adequate heat sinking and consider the thermal resistance of the package. The device requires a stable drain supply and proper RF decoupling. The input and output are matched to 50 ohms, but external matching may be needed for optimal performance at the band edges.
ADPA1113 - 2-6GHz 46dBm GaN Power Amplifier | Analog Devices
The ADPA1113 is a gallium nitride (GaN) broadband power amplifier from Analog Devices, delivering 46.5 dBm (44.7 W) output power with 39.0% power added efficiency (PAE) across the 2.3 GHz to 5.7 GHz frequency range. Housed in a 14-lead LDCC (9.8x8.2 mm) package, this device operates from a nominal 28 V drain supply with an externally applied negative gate voltage on the VGG1 pin to set the total quiescent current (IDQ) to 750 mA. The amplifier features cascaded gain stages and requires no external matching, AC coupling, or external inductor for biasing, simplifying system design and reducing bill of materials. A GaN power amplifier is a high-efficiency RF amplifier that uses gallium nitride transistors to achieve high output power and wide bandwidth. GaN technology offers superior power density, thermal performance, and efficiency compared to traditional silicon-based amplifiers, making it ideal for demanding RF applications. In the signal chain hierarchy, the ADPA1113 functions as a final-stage power amplifier, converting low-level RF signals into high-power signals suitable for transmission, typically following driver amplifiers and preceding antennas or filters. Key features of the ADPA1113 include its 46.5 dBm saturated output power, 39.0% PAE, and operation across the full 2.3 GHz to 5.7 GHz band without external matching. The device is biased with a positive 28 V drain supply and a negative gate voltage, enabling precise control of the quiescent current. The 14-lead LDCC package provides excellent thermal performance, with the exposed pad facilitating heat transfer to the PCB. The amplifier is recommended for new designs, indicating active lifecycle status and ongoing manufacturer support. Technically, the ADPA1113 utilizes a cascaded gain stage architecture, allowing it to achieve high gain and output power in a single device. The negative gate bias (VGG1) sets the operating point, ensuring linearity and efficiency across the frequency range. The device's broadband performance eliminates the need for external matching networks, reducing design complexity and component count. The 28 V drain supply is typical for GaN devices, balancing efficiency and output power. Typical applications include radar systems, electronic warfare, communications infrastructure, and test and measurement equipment. The ADPA1113's high output power and wide bandwidth make it suitable for pulsed and continuous-wave (CW) operation in these systems. Its efficiency reduces thermal management requirements, enabling compact system designs. When designing with the ADPA1113, ensure proper thermal management through adequate PCB copper area and heat sinking, as the device dissipates significant power at high output levels. The negative gate bias must be applied before the drain supply to prevent device damage, following standard GaN biasing sequences.
ADRF5720 - 6-Bit Digital Attenuator 9kHz-40GHz | Analog Devices
The ADRF5720 is a silicon, 6-bit digital attenuator from Analog Devices offering a 31.5 dB attenuation control range in 0.5 dB steps. It operates from 9 kHz to 40 GHz with better than 4.5 dB of insertion loss and excellent attenuation accuracy. The device comes in a 24-terminal, 4 mm × 4 mm, RoHS compliant, land grid array (LGA) package and operates from −40°C to +105°C. The RF ports are designed to match a characteristic impedance of 50 Ω. A digital attenuator is a type of RF component that reduces the amplitude of an RF signal by a controlled amount, set digitally via a parallel or serial interface. It is a key building block in RF and microwave systems, used for signal conditioning, power leveling, and calibration. Digital attenuators are part of the broader family of RF control components, which also includes switches, phase shifters, and variable gain amplifiers. They are essential in applications such as test and measurement, communications, and radar systems. Key features of the ADRF5720 include its ultra-wideband frequency coverage from 9 kHz to 40 GHz, which is rare among digital attenuators, and its high attenuation accuracy. The device is pin-compatible with the ADRF5730, a fast switching version that operates from 100 MHz to 40 GHz. This allows designers to upgrade or downgrade between the two parts without PCB changes. The ADRF5720 also features a serial interface for setting attenuation, and it operates from a single 3.3 V or 5 V supply. The ADRF5720 is fabricated using a silicon process, which provides high linearity and low power consumption. The device includes an on-chip driver and a serial-to-parallel interface, simplifying integration into digital control systems. The LGA package is designed for high-frequency performance, with low parasitic inductance and capacitance. The exposed pad provides a low thermal resistance path, enabling efficient heat dissipation. Typical applications for the ADRF5720 include automatic gain control (AGC) loops, signal leveling in test equipment, and gain compensation in communication systems. Its wide frequency range makes it suitable for both low-frequency baseband and high-frequency microwave applications. The device is also used in radar systems for calibration and in satellite communications for power control. When designing with the ADRF5720, it is important to provide adequate grounding and decoupling. The RF input and output ports should be matched to 50 Ω, and the control lines should be properly terminated to avoid spurious responses. The device's serial interface should be programmed according to the datasheet's timing requirements to ensure accurate attenuation settings.
ADRF5730 - 6-Bit Digital Attenuator 100MHz-40GHz | Analog Devices
The ADRF5730 is a silicon, 6-bit digital attenuator with 31.5 dB attenuation control range in 0.5 dB steps, operating from 100 MHz to 40 GHz. It comes in a 24-terminal, 4 mm × 4 mm, RoHS-compliant, land grid array (LGA) package and operates from −40°C to +105°C. The device features better than 4.8 dB insertion loss and excellent attenuation accuracy, making it suitable for a wide range of RF and microwave applications. A digital attenuator is a type of RF component that reduces the amplitude of an RF signal by a controlled amount, typically using switched resistor networks or PIN diodes. It is a key building block in RF front-end systems, enabling signal level control, gain adjustment, and protection of sensitive components. Digital attenuators are part of the broader category of RF control components, which also includes switches, phase shifters, and variable gain amplifiers. They are essential in modern communication systems, radar, and test equipment. Key features of the ADRF5730 include its wide frequency range from 100 MHz to 40 GHz, which covers most microwave bands, and its 6-bit resolution providing 64 discrete attenuation states. The device is pin-compatible with the ADRF5720 low frequency cutoff version, which operates from 9 kHz to 40 GHz, allowing design flexibility. The RF ports are designed to match a characteristic impedance of 50 Ω, simplifying system integration. The device also offers excellent attenuation accuracy and low insertion loss, critical for maintaining signal integrity. Technically, the ADRF5730 uses a silicon process technology, which provides high linearity and repeatability compared to traditional GaAs solutions. The device is controlled via a serial interface, allowing precise setting of attenuation levels. It includes an exposed pad for improved thermal performance, and the LGA package is suitable for high-frequency operation due to its low parasitic inductance. The device is recommended for new designs, indicating ongoing support and availability. Typical applications include RF and microwave test equipment, communication systems, radar systems, and electronic warfare. In test equipment, the ADRF5730 is used for precise signal level control in signal generators and spectrum analyzers. In communication systems, it is used for automatic gain control (AGC) and power leveling. The device's wide frequency range and high accuracy make it ideal for these demanding applications. When designing with the ADRF5730, it is important to ensure proper grounding and decoupling to maintain performance. The exposed pad should be soldered to a ground plane for thermal and electrical performance. Additionally, the control interface should be properly terminated to avoid spurious switching. The device's insertion loss and attenuation accuracy should be considered in system budget calculations.
HMC8411 - 0.01-10GHz GaAs pHEMT LNA | Analog Devices
The HMC8411 is a gallium arsenide (GaAs), monolithic microwave integrated circuit (MMIC), pseudomorphic high electron mobility transistor (pHEMT), low noise wideband amplifier from Analog Devices. It operates from 0.01 GHz to 10 GHz, providing a typical gain of 15.5 dB, a 1.7 dB typical noise figure, and a typical output third-order intercept point (OIP3) of [DATA_NEEDED: OIP3 value] dBm. The device is housed in a 6-lead LFCSP (2x2 mm) package, designed for surface mount assembly, and is recommended for new designs. A low noise amplifier (LNA) is a critical component in RF front-end systems, placed at the first stage of a receiver chain to amplify weak signals while adding minimal noise. The HMC8411 belongs to the category of RF amplifiers, specifically wideband LNAs, which are essential in applications such as communications, radar, and test equipment. Its wideband coverage from 10 MHz to 10 GHz makes it versatile for various frequency bands. Key features include a low noise figure of 1.7 dB, which is crucial for maintaining signal integrity in sensitive receivers, and a gain of 15.5 dB to boost signal levels. The device operates over a supply voltage of [DATA_NEEDED: supply voltage] V and consumes [DATA_NEEDED: supply current] mA. It is designed for 50-ohm systems, simplifying integration into standard RF chains. The LFCSP package offers excellent thermal performance and small footprint, ideal for compact designs. Technically, the HMC8411 leverages GaAs pHEMT technology, which provides high electron mobility and low noise characteristics, making it superior to silicon-based amplifiers for high-frequency applications. The device includes internal matching networks, reducing external component count and simplifying PCB layout. It is specified for operation over the temperature range of -40°C to +85°C, ensuring reliability in harsh environments. Typical applications include cellular infrastructure, point-to-point radios, satellite communications, radar systems, and test instrumentation. Its wideband nature allows it to be used in software-defined radios and broadband receivers. The HMC8411 is also suitable for military and aerospace applications where high performance and reliability are paramount. When designing with the HMC8411, ensure proper bias sequencing to avoid damage. The evaluation board EV1HMC8411LP2F uses Rogers 4350 material with 50-ohm impedance traces, providing a reference for layout. Adequate decoupling on the supply pins is essential to maintain stability and performance.
LTC6430-20 - 20.8dB Differential RF/IF Amplifier | Analog Devices
The LTC6430-20 is a high linearity differential RF/IF amplifier and ADC driver from Analog Devices, designed to drive high-resolution, high-speed ADCs with excellent linearity beyond 1000MHz and low output noise. It operates from a single 5V supply and consumes only 850mW. The device is housed in a 4mm × 4mm, 24-lead QFN package with an exposed pad for thermal management and low inductance. A differential gain block amplifier is a type of RF amplifier that amplifies the difference between two input signals while rejecting common-mode noise. It is essential in high-speed ADC driver applications where signal integrity and linearity are critical. The LTC6430-20 belongs to the hierarchy: differential amplifier -> RF amplifier -> analog IC -> semiconductor. Key features include 20.8dB gain, 2060MHz -3dB bandwidth, 0.6nV/√Hz total input noise at 1.4GHz, and >2.75V P-P linear output. The A-grade version is 100% tested and guaranteed for OIP3 at 380MHz. The SiGe BiCMOS process ensures excellent repeatability compared to GaAs amplifiers. The LTC6430-20 uses a high performance SiGe BiCMOS process, which combines the speed of silicon germanium with the integration benefits of BiCMOS. This results in superior linearity and noise performance, making it ideal for demanding RF and IF applications. The differential architecture provides common-mode rejection, reducing susceptibility to ground bounce and noise. Typical applications include driving high-speed ADCs in communications, test and measurement, and radar systems. It is also used in IF amplification stages in receivers and transmitters. The device's high linearity and low noise make it suitable for multi-carrier and wideband signals. When designing with the LTC6430-20, ensure proper power supply decoupling and thermal management. The exposed pad should be soldered to a ground plane for optimal heat dissipation. Input and output matching networks should be designed to achieve the desired bandwidth and gain.
LTC6430-20#PBF - 20.8dB Differential RF/IF Amplifier | Analog Devices
The LTC6430-20#PBF is a high linearity differential gain block amplifier from Analog Devices, designed to drive high resolution, high speed ADCs with excellent linearity beyond 1000MHz and low output noise. It operates from a single 5V power supply and consumes only 850mW. The device is housed in a 4mm × 4mm, 24-lead QFN package with an exposed pad for thermal management and low inductance. The LTC6430-20 uses a high performance SiGe BiCMOS process for excellent repeatability compared with similar GaAs amplifiers. All A-grade LTC6430-20 devices are tested and guaranteed for OIP3 at 380MHz. A differential gain block amplifier is a type of RF/IF amplifier that amplifies the difference between two input signals, rejecting common-mode noise and providing balanced output drive. It is a key building block in high-speed signal chains, positioned between the mixer or filter and the ADC. The differential architecture improves linearity and reduces even-order distortion, making it ideal for demanding communications and instrumentation applications. Key features include 20.8dB gain, 2060MHz -3dB bandwidth, 0.6nV/√Hz total input noise, and >2.75V P-P linear output at 1.4GHz. The A-grade version guarantees OIP3 at 380MHz, ensuring consistent third-order intercept performance. The SiGe BiCMOS process provides excellent repeatability and reliability compared to GaAs alternatives. The device is optimized for driving high-speed ADCs, providing a clean, linear signal with minimal distortion. Its differential output can directly interface with differential ADC inputs, simplifying the interface and improving noise immunity. The low output noise of 0.6nV/√Hz ensures that the amplifier does not degrade the ADC's signal-to-noise ratio. Typical applications include cellular base station receivers, software-defined radios, radar systems, and high-speed data acquisition. The LTC6430-20 is also suitable for IF sampling receivers where high linearity and low noise are critical. Its single 5V supply operation simplifies power supply design, and the low power consumption of 850mW reduces thermal management requirements. When designing with this device, ensure proper decoupling of the 5V supply and adequate thermal management through the exposed pad. The differential inputs and outputs should be matched to the system impedance to minimize reflections and maximize linearity.