ADL5385ACPZ - 30MHz-2.2GHz Quadrature Modulator | Analog Devices
MPN: ADL5385ACPZ β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.25 | $112.50 |
| 100 | $10 | $1,000.00 |
| 500 | $9 | $4,500.00 |
| 1,000 | $8.1 | $8,100.00 |
Drop-in alternatives for ADL5385ACPZ β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
ADL5385ACPZ-R7
β Drop-Inβ In Stock
$8.1 / Unit
View Datasheet βADL5385ACPZ-R2
β Drop-Inπ Reference alternative (not in catalog)
ADL5385ACPZ-WP
β Drop-Inπ Reference alternative (not in catalog)
TRF3704
β‘ Same Packageπ Reference alternative (not in catalog)
LTC5584
β‘ Same Packageπ Reference alternative (not in catalog)
ADL5385ACPZ Maximum Ratings & Electrical Characteristics
| Function | Quadrature Modulator |
| Frequency Range | 30 MHz to 2200 MHz |
| Supply Voltage | 5 V |
| Supply Current | 220 mA (typical) |
| Output IP3 | 24 dBm (typical) |
| Output P1dB | 12 dBm (typical) |
| Conversion Gain | 0 dB (typical) |
| Noise Figure | 20 dB (typical) |
| Carrier Feedthrough | -40 dBm (typical) |
| Sideband Suppression | -40 dBc (typical) |
| Baseband Input Common-Mode Voltage | 2.5 V |
| LO Drive Level | 0 dBm (typical) |
| Package | 24-Lead LFCSP (4x4 mm) |
| Operating Temperature Range | -40Β°C to +85Β°C |
| RoHS Status | Compliant |
ADL5385ACPZ Pin Configuration
| Pin 1 | GND β Ground |
| Pin 2 | IBBP β Baseband I positive input |
| Pin 3 | IBBN β Baseband I negative input |
| Pin 4 | GND β Ground |
| Pin 5 | QBBP β Baseband Q positive input |
| Pin 6 | QBBN β Baseband Q negative input |
| Pin 7 | GND β Ground |
| Pin 8 | VPOS β Positive supply (5V) |
| Pin 9 | GND β Ground |
| Pin 10 | LOIP β LO positive input |
| Pin 11 | LOIN β LO negative input |
| Pin 12 | GND β Ground |
| Pin 13 | RFOUTP β RF output positive |
| Pin 14 | RFOUTN β RF output negative |
| Pin 15 | GND β Ground |
| Pin 16 | ENABLE β Enable (active high) |
| Pin 17 | GND β Ground |
| Pin 18 | GND β Ground |
| Pin 19 | GND β Ground |
| Pin 20 | GND β Ground |
| Pin 21 | GND β Ground |
| Pin 22 | GND β Ground |
| Pin 23 | GND β Ground |
| Pin 24 | GND β Ground |
| Pin 25 | EPAD β Exposed pad, ground |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
ADL5385ACPZ is suitable for 6 applications: Cellular Base Stations, Microwave Point-to-Point Radios, Satellite Communications, Software-Defined Radio (SDR), Test and Measurement Equipment, Broadcast Transmitters.
Cellular Base Stations
The ADL5385ACPZ is ideal for cellular base station transmitters, operating from 30 MHz to 2200 MHz covering 2G, 3G, and 4G LTE bands. Its high output IP3 of 24 dBm ensures low intermodulation distortion in multi-carrier configurations, while excellent sideband suppression of -40 dBc maintains spectral purity. The differential baseband interface simplifies connection to DACs, and the 5 V supply is compatible with common base station power rails. The device's phase accuracy and amplitude balance contribute to low EVM, essential for high-order QAM modulation.
Recommended
Microwave Point-to-Point Radios
For microwave point-to-point radios operating in the 1.5 GHz to 2.2 GHz range, the ADL5385ACPZ provides direct RF modulation with high linearity and low noise. Its wide frequency range allows a single design to cover multiple bands, reducing BOM complexity. The device's carrier feedthrough of -40 dBm minimizes LO leakage, which is critical for meeting emission limits. The exposed pad package aids thermal management in compact radio modules. The modulator's differential RF output can be directly connected to a balun and power amplifier, simplifying the transmit chain.
Recommended
Satellite Communications
In satellite communication systems, the ADL5385ACPZ is used in the IF section for upconversion to L-band or C-band. Its excellent phase accuracy and amplitude balance ensure low EVM for QPSK and 8PSK modulation schemes. The device operates from a single 5 V supply, simplifying power distribution in satellite transponders. The wide frequency range covers common IF frequencies such as 70 MHz and 140 MHz, as well as L-band up to 2.2 GHz. The modulator's high output IP3 of 24 dBm helps maintain signal integrity in the presence of strong adjacent channels.
Recommended
Software-Defined Radio (SDR)
The ADL5385ACPZ is well-suited for software-defined radio transmitters, where flexibility and wideband operation are essential. Its 30 MHz to 2200 MHz frequency range covers HF, VHF, UHF, and lower microwave bands, enabling a single hardware platform for multiple applications. The differential baseband inputs interface directly with high-speed DACs, allowing digital modulation schemes to be implemented in software. The device's low carrier feedthrough and high sideband suppression reduce the need for external filtering, simplifying the RF front-end. The enable function allows power-down for TDD operation.
Recommended
Test and Measurement Equipment
In test and measurement equipment such as signal generators and vector modulators, the ADL5385ACPZ provides precise I/Q modulation for generating complex waveforms. Its high linearity and low noise ensure accurate signal reproduction. The wide frequency range allows a single instrument to cover multiple bands, reducing cost and complexity. The device's differential baseband inputs are compatible with arbitrary waveform generators, enabling flexible modulation formats. The exposed pad package facilitates thermal management in benchtop instruments that may operate continuously.
Recommended
Broadcast Transmitters
The ADL5385ACPZ is used in broadcast transmitters for FM, DAB, and DVB-T, operating in the VHF and UHF bands. Its excellent linearity and low noise ensure high-quality modulated signals. The device's wide frequency range covers 30 MHz to 2200 MHz, making it suitable for both VHF and UHF broadcast bands. The differential baseband interface simplifies connection to audio/video encoders. The modulator's high output IP3 of 24 dBm helps maintain signal integrity in high-power transmitter chains.
Recommended
Recommended Products Summary
Engineering reference data for ADL5385ACPZ β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADL5385ACPZ-R7 | ADL5385ACPZ-R2 | ADL5385ACPZ-WP | TRF3704 | LTC5584 |
|---|---|---|---|---|---|---|
| Package | 24-Lead LFCSP (4x4 mm) | 24-Lead LFCSP (4x4 mm) | 24-Lead LFCSP (4x4 mm) | 24-Lead LFCSP (4x4 mm) | 24-Lead VQFN (4x4 mm) | 24-Lead QFN (4x4 mm) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Texas Instruments | Analog Devices |
| Function | Quadrature Modulator | Quadrature Modulator | Quadrature Modulator | Quadrature Modulator | Quadrature Modulator | Quadrature Demodulator |
| Frequency Range | 30 MHz to 2200 MHz | 30 MHz to 2200 MHz | 30 MHz to 2200 MHz | 30 MHz to 2200 MHz | 50 MHz to 4 GHz | 30 MHz to 4 GHz |
| Supply Voltage | 5 V | 5 V | 5 V | 5 V | 3.3 V | 5 V |
| Output IP3 | 24 dBm | 24 dBm | 24 dBm | 24 dBm | 25 dBm | N/A (demodulator) |
| Carrier Feedthrough | -40 dBm | -40 dBm | -40 dBm | -40 dBm | -40 dBm | N/A (demodulator) |
| Sideband Suppression | -40 dBc | -40 dBc | -40 dBc | -40 dBc | -40 dBc | N/A (demodulator) |
Key Differentiators
- Wide frequency range from 30 MHz to 2200 MHz (vs TRF3704)
- Single 5 V supply operation (vs TRF3704)
- Excellent phase accuracy and amplitude balance (vs LTC5584)
Design Notes
For optimal RF performance, place the ADL5385ACPZ on a low-loss PCB substrate such as Rogers or FR4 with proper grounding. The exposed pad must be soldered to a solid ground plane with multiple vias to minimize thermal and electrical impedance. Keep all RF traces as short as possible and use controlled impedance for the differential baseband and RF outputs.
The ADL5385ACPZ requires a clean 5 V supply. Use a low-noise LDO regulator and place 100 nF and 10 uF decoupling capacitors close to the VPOS pin. The supply current is typically 220 mA, so ensure the regulator can handle this load. Avoid sharing the supply with high-current digital circuits to prevent noise coupling.
Ensure the LO drive level is within the specified range (typically 0 dBm). Insufficient LO drive can degrade sideband suppression and carrier feedthrough. Also, the baseband inputs must be driven differentially with the correct common-mode voltage (2.5 V). Mismatched baseband impedances can cause I/Q imbalance, increasing EVM.
Compliance Information
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified.
