AD8616ARZ - Dual Precision CMOS Rail-to-Rail Op Amp | Analog Devices
MPN: AD8616ARZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.56 | $25.60 |
| 100 | $2.28 | $228.00 |
| 500 | $2.05 | $1,025.00 |
| 1,000 | $1.82 | $1,820.00 |
Drop-in alternatives for AD8616ARZ — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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View Datasheet →AD8616ARZ Maximum Ratings & Electrical Characteristics
| Number of Channels | 2 |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Input Offset Voltage | 65 µV (typical) |
| Gain Bandwidth Product | 20 MHz |
| Slew Rate | 12 V/µs |
| Input Bias Current | 1 pA (typical) |
| Input Voltage Noise | 7 nV/√Hz |
| Input Current Noise | 0.01 pA/√Hz |
| Rail-to-Rail Input/Output | Yes |
| Quiescent Current per Amplifier | 1.7 mA |
| Operating Temperature Range | -40°C to +125°C |
| Package | 8-Lead SOIC (SOIC-8) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Capacitive Load Stability | 500 pF |
AD8616ARZ Pin Configuration
| Pin 1 | OUT A — Output of amplifier A |
| Pin 2 | -IN A — Inverting input of amplifier A |
| Pin 3 | +IN A — Non-inverting input of amplifier A |
| Pin 4 | V- — Negative supply (ground in single-supply operation) |
| Pin 5 | +IN B — Non-inverting input of amplifier B |
| Pin 6 | -IN B — Inverting input of amplifier B |
| Pin 7 | OUT B — Output of amplifier B |
| Pin 8 | V+ — Positive supply |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
AD8616ARZ is suitable for 6 applications: Portable Instrumentation, Battery-Powered Devices, Sensor Signal Conditioning, Active Filters, Data Acquisition Systems, Audio Signal Processing.
Portable Instrumentation
The AD8616ARZ is ideal for portable instrumentation due to its low quiescent current of 1.7 mA per amplifier and wide supply voltage range of 2.7 V to 5.5 V. Its rail-to-rail input and output capability maximizes signal headroom in battery-powered devices, ensuring accurate signal conditioning for sensors and transducers. The low input bias current of 1 pA minimizes loading on high-impedance sources, making it suitable for pH probes, thermocouples, and other precision sensors. The 20 MHz bandwidth allows for fast signal processing, while the low offset voltage of 65 µV ensures measurement accuracy. In portable devices, power efficiency is critical, and the AD8616ARZ's low power consumption extends battery life without compromising performance.
Recommended
Battery-Powered Devices
The AD8616ARZ is well-suited for battery-powered devices such as wireless sensors, wearables, and medical monitors. Its low quiescent current of 1.7 mA per amplifier and supply voltage range down to 2.7 V allow operation from a single lithium-ion cell. The rail-to-rail output ensures maximum dynamic range, which is essential for audio and signal processing in portable electronics. The low input voltage noise of 7 nV/√Hz preserves signal integrity in low-level sensor applications. The device's small SOIC-8 package saves board space, and its wide temperature range of -40°C to +125°C ensures reliable operation in various environments. The low bias current of 1 pA is particularly beneficial for high-impedance sources like piezoelectric sensors.
Recommended
Sensor Signal Conditioning
The AD8616ARZ excels in sensor signal conditioning applications, including pressure, temperature, and optical sensors. Its low input bias current of 1 pA minimizes errors when interfacing with high-impedance sensors, while the low offset voltage of 65 µV ensures accurate DC measurement. The 20 MHz bandwidth allows for amplification of fast-changing signals, and the rail-to-rail input/output capability accommodates full-scale sensor outputs. The low noise performance (7 nV/√Hz) is critical for maintaining signal-to-noise ratio in precision measurement systems. The device's wide supply range of 2.7 V to 5.5 V makes it compatible with various ADC reference voltages. In a typical configuration, the op amp is used as a buffer or gain stage before an ADC, providing impedance transformation and signal conditioning.
Recommended
Active Filters
The AD8616ARZ is an excellent choice for active filter designs, including low-pass, high-pass, and band-pass filters. Its 20 MHz gain bandwidth product allows for accurate filter responses at frequencies up to several megahertz. The low offset voltage and low noise ensure high precision in filter characteristics. The rail-to-rail output enables the filter to drive ADCs or other loads with maximum signal swing. The device's low power consumption is advantageous in multi-channel filter banks. When designing active filters, the AD8616ARZ's high input impedance and low output impedance simplify component selection. The stability with capacitive loads up to 500 pF ensures reliable operation with various load conditions.
Recommended
Data Acquisition Systems
In data acquisition systems, the AD8616ARZ serves as a buffer or gain stage between sensors and ADCs. Its low offset voltage and low noise ensure accurate signal conversion, while the 20 MHz bandwidth supports high-speed sampling. The rail-to-rail input/output capability allows the op amp to handle full-scale signals from various sensors. The low input bias current minimizes errors when driving high-impedance sources. The device's wide supply range is compatible with common ADC reference voltages (e.g., 3.3 V, 5 V). In multi-channel systems, the dual amplifier configuration saves board space and reduces component count. The AD8616ARZ's low power consumption is beneficial in portable data loggers and remote monitoring systems.
Recommended
Audio Signal Processing
The AD8616ARZ is suitable for audio signal processing applications, such as headphone amplifiers, microphone preamplifiers, and active crossovers. Its low noise (7 nV/√Hz) and low distortion ensure high-fidelity audio reproduction. The rail-to-rail output allows the amplifier to drive headphones or line-level outputs with maximum voltage swing. The 20 MHz bandwidth is more than sufficient for audio frequencies, and the low quiescent current is beneficial for battery-powered audio devices. The device's low offset voltage minimizes DC offset at the output, preventing speaker damage. In audio applications, the AD8616ARZ can be used as a buffer, gain stage, or active filter, providing clean signal amplification with minimal coloration.
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Recommended Products Summary
Engineering reference data for AD8616ARZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD8656ARZ | AD8626ARZ | AD8606ARZ |
|---|---|---|---|---|
| Package | SOIC-8 | SOIC-8 | SOIC-8 | SOIC-8 |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Number of Channels | 2 | 2 | 2 | 2 |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V |
| Gain Bandwidth Product | 20 MHz | 10 MHz | 5 MHz | 10 MHz |
| Input Offset Voltage | 65 µV | 50 µV | 75 µV | 80 µV |
| Input Voltage Noise | 7 nV/√Hz | 4.5 nV/√Hz | 12 nV/√Hz | 8 nV/√Hz |
| Quiescent Current per Amplifier | 1.7 mA | 2.5 mA | 0.7 mA | 1.0 mA |
Key Differentiators
- Higher bandwidth (20 MHz) compared to AD8656ARZ (10 MHz) (vs AD8656ARZ)
- Lower quiescent current (1.7 mA) compared to AD8656ARZ (2.5 mA) (vs AD8656ARZ)
- Lower input bias current (1 pA) compared to AD8626ARZ (1 pA) (vs AD8626ARZ)
Design Notes
The AD8616ARZ operates from a single supply of 2.7 V to 5.5 V. For optimal performance, use a clean power supply with low ripple. Place a 0.1 µF ceramic capacitor close to the V+ pin and a 10 µF tantalum capacitor for bulk decoupling. In dual-supply operation, ensure both supplies are properly decoupled to avoid noise coupling.
For best noise performance, keep the feedback network resistors low in value (e.g., 1 kΩ to 10 kΩ) to minimize thermal noise. Place the input and output traces away from high-frequency digital lines to avoid crosstalk. Use a ground plane to provide a low-impedance return path and reduce EMI.
Avoid exceeding the absolute maximum supply voltage of 6 V. The input common-mode range includes both rails, but do not apply voltages beyond the supply rails. The output can swing close to the rails, but not exactly to them; account for the output saturation voltage in your design. Ensure the load capacitance does not exceed 500 pF to maintain stability.
Compliance Information
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified. Lead-free finish.
