AD8606ARZ - Dual Precision CMOS Rail-to-Rail Op Amp | Analog Devices
MPN: AD8606ARZ ✓ 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 | $1.85 | $1,850.00 |
Drop-in alternatives for AD8606ARZ — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
AD8606ARZ-REEL7
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OPA2376
✅ Drop-In📋 Reference alternative (not in catalog)
MCP6272
✅ Drop-In📋 Reference alternative (not in catalog)
LMV772
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AD8606ARZ Maximum Ratings & Electrical Characteristics
| Number of Channels | 2 |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Gain Bandwidth Product | 10 MHz |
| Slew Rate | 5 V/µs |
| Input Offset Voltage (max) | 65 µV |
| Input Bias Current (typ) | 1 pA |
| Input Voltage Noise Density | 6.5 nV/√Hz |
| Input Current Noise Density | 0.2 fA/√Hz |
| Rail-to-Rail Input | Yes |
| Rail-to-Rail Output | Yes |
| Quiescent Current per Amplifier | 1.3 mA |
| Operating Temperature Range | -40°C to +125°C |
| Package | 8-SOIC |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
AD8606ARZ 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
AD8606ARZ is suitable for 6 applications: Photodiode Amplifier, Battery-Powered Instrumentation, Active Filters, Audio Signal Conditioning, Sensor Signal Conditioning, Medical Instrumentation.
Photodiode Amplifier
The AD8606ARZ's low input bias current (1 pA) and low current noise (0.2 fA/√Hz) make it ideal for transimpedance amplifiers in photodiode applications. The rail-to-rail output allows direct interfacing with ADCs, and the 10 MHz bandwidth supports high-speed optical sensing. In a typical circuit, the photodiode is connected to the inverting input with a feedback resistor, and the low bias current minimizes dark current errors, ensuring accurate light measurement.
Recommended
Battery-Powered Instrumentation
With a supply range of 2.7V to 5.5V and quiescent current of 1.3 mA per amplifier, the AD8606ARZ is well-suited for portable instruments. The rail-to-rail input and output maximize signal swing in low-voltage systems, while the low offset voltage (65 µV) ensures accurate measurements. In a battery-powered data logger, the AD8606 can condition sensor signals before ADC conversion, and its low power consumption extends battery life.
Recommended
Active Filters
The 10 MHz gain-bandwidth product and 5 V/µs slew rate of the AD8606ARZ enable the implementation of active filters with cutoff frequencies up to several hundred kHz. The low noise and distortion characteristics preserve signal integrity in audio and communication systems. For a second-order low-pass filter, the AD8606 can be configured as a Sallen-Key topology, and the rail-to-rail output allows the filter to drive subsequent stages without clipping.
Recommended
Audio Signal Conditioning
The AD8606ARZ's low voltage noise (6.5 nV/√Hz) and low distortion make it suitable for audio preamplifiers and headphone amplifiers. The rail-to-rail output can drive headphones directly in low-power designs, and the wide bandwidth ensures accurate reproduction of audio frequencies. In a portable audio player, the AD8606 can buffer the DAC output and drive the headphone jack, providing clean, low-noise audio.
Recommended
Sensor Signal Conditioning
The AD8606ARZ is ideal for conditioning signals from various sensors, including temperature, pressure, and strain gauges. Its low offset voltage and low drift ensure accurate amplification of small sensor signals, while the rail-to-rail input allows direct connection to sensors with outputs near the supply rails. In a temperature measurement system, the AD8606 can amplify a thermocouple signal before ADC conversion, and its low power consumption is beneficial for remote sensing nodes.
Recommended
Medical Instrumentation
The AD8606ARZ's precision and low noise make it suitable for medical devices such as ECG and pulse oximeters. The low input bias current minimizes electrode offset errors, and the rail-to-rail output allows direct interfacing with microcontrollers. In an ECG front-end, the AD8606 can amplify the small biopotential signals, and its low power consumption is critical for wearable devices. The device's wide temperature range (-40°C to +125°C) ensures reliable operation in clinical environments.
Recommended
Recommended Products Summary
Engineering reference data for AD8606ARZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD8606ARZ-REEL7 | OPA2376 | MCP6272 | LMV772 |
|---|---|---|---|---|---|
| Package | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC |
| Brand | Analog Devices | Analog Devices | Texas Instruments | Microchip Technology | Texas Instruments |
| Supply Voltage Range | 2.7V to 5.5V | 2.7V to 5.5V | 2.2V to 5.5V | 2.0V to 5.5V | 2.7V to 5.0V |
| Gain Bandwidth Product | 10 MHz | 10 MHz | 5.5 MHz | 2 MHz | 3.5 MHz |
| Input Offset Voltage (max) | 65 µV | 65 µV | 25 µV | 3 mV | 1 mV |
| Input Bias Current | 1 pA | 1 pA | 0.5 pA | 1 pA | 0.1 pA |
| Voltage Noise Density | 6.5 nV/√Hz | 6.5 nV/√Hz | 7.5 nV/√Hz | 8.7 nV/√Hz | 8.5 nV/√Hz |
| Quiescent Current per Amplifier | 1.3 mA | 1.3 mA | 0.95 mA | 0.17 mA | 0.4 mA |
Key Differentiators
- Lower input bias current (1 pA) compared to OPA2376 (0.5 pA) (vs OPA2376)
- Higher gain bandwidth product (10 MHz) vs MCP6272 (2 MHz) (vs MCP6272)
- Lower voltage noise (6.5 nV/√Hz) vs LMV772 (8.5 nV/√Hz) (vs LMV772)
Design Notes
The AD8606ARZ operates from 2.7V to 5.5V. Use a 0.1 µF ceramic capacitor close to each supply pin (V+ and V-) to decouple high-frequency noise. For best performance, place a 10 µF tantalum capacitor in parallel for lower frequency decoupling, especially when driving capacitive loads.
For optimal noise performance, keep the input traces short and shielded from digital signals. Use a ground plane under the op amp to reduce parasitic capacitance and noise pickup. The AD8606's low bias current allows the use of high-value feedback resistors, but ensure the PCB is clean to avoid leakage currents.
Avoid exceeding the absolute maximum supply voltage of 6V. The input common-mode range extends beyond the rails, but do not apply voltages beyond V+ + 0.3V or V- - 0.3V. Also, ensure the output is not shorted to ground or supply for extended periods, as this can cause thermal stress.
Compliance Information
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified. Lead-free per datasheet.