AD8606ARZ - Dual Precision CMOS Rail-to-Rail Op Amp | Analog Devices
MPN: AD8606ARZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.5 | $2.50 |
| 10 | $2.2 | $22.00 |
| 100 | $1.8 | $180.00 |
| 500 | $1.5 | $750.00 |
| 1,000 | $1.3 | $1,300.00 |
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
✅ Drop-In📋 Reference alternative (not in catalog)
OPA2376AIDR
✅ Drop-In📋 Reference alternative (not in catalog)
MCP6V26-E/SN
✅ Drop-In📋 Reference alternative (not in catalog)
ADA4077-2ARZ
✅ Drop-In✓ In Stock
$2.19 / Unit
View Datasheet →AD8606ARZ Maximum Ratings & Electrical Characteristics
| Number of Channels | 2 |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Maximum Offset Voltage | 65 µV |
| Input Bias Current | 1 pA (typical) |
| Gain-Bandwidth Product | 10 MHz |
| Input Voltage Noise | 6.5 nV/√Hz |
| Input Current Noise | 0.2 fA/√Hz |
| Quiescent Current per Amplifier | 1.3 mA |
| Rail-to-Rail Input | Yes |
| Rail-to-Rail Output | Yes |
| Operating Temperature Range | -40°C to +125°C |
| Package | 8-lead SOIC |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Lead-Free | Yes |
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) |
| 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, Medical Instrumentation, Industrial Sensor Interface.
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 to set transimpedance gain. The low offset voltage (65 µV) ensures accurate light measurement even at low light levels. The CMOS input stage provides high impedance, minimizing loading on the photodiode. This configuration is widely used in medical diagnostics, industrial sensors, and optical communication systems.
Recommended
Battery-Powered Instrumentation
The AD8606ARZ operates from 2.7V to 5.5V, making it suitable for battery-powered instruments. Its low quiescent current of 1.3 mA per amplifier extends battery life, while rail-to-rail input/output maximizes dynamic range. The low offset voltage (65 µV) and low noise (6.5 nV/√Hz) ensure accurate measurements in portable medical devices, handheld multimeters, and wireless sensors. The CMOS input provides high impedance, minimizing loading on high-impedance sensors. The wide temperature range (-40°C to +125°C) ensures reliable operation in field environments. This makes the AD8606ARZ a preferred choice for precision portable instrumentation.
Recommended
Active Filters
The AD8606ARZ's 10 MHz gain-bandwidth product and low noise make it ideal for active filters in audio and communication systems. The rail-to-rail output allows the filter to swing close to the supply rails, maximizing signal amplitude. The low offset voltage (65 µV) minimizes DC errors in high-gain filter stages. In a Sallen-Key low-pass filter, the AD8606ARZ provides stable gain and low distortion. The CMOS input ensures high input impedance, allowing the use of high-value resistors without loading. This makes the AD8606ARZ suitable for anti-aliasing filters, audio equalizers, and sensor signal conditioning.
Recommended
Audio Signal Conditioning
The AD8606ARZ provides low noise (6.5 nV/√Hz) and low distortion, making it suitable for audio signal conditioning. The rail-to-rail output allows the amplifier to drive line-level signals without clipping. The low offset voltage (65 µV) ensures minimal DC offset in audio paths. In a microphone preamplifier, the AD8606ARZ amplifies the small signal from the microphone with high fidelity. The wide bandwidth (10 MHz) preserves audio frequencies up to 20 kHz with minimal phase shift. The low quiescent current (1.3 mA) is beneficial for portable audio devices. This makes the AD8606ARZ a good choice for headphone amplifiers, mixers, and audio interfaces.
Recommended
Medical Instrumentation
The AD8606ARZ's low offset voltage (65 µV), low noise (6.5 nV/√Hz), and low input bias current (1 pA) make it ideal for medical instrumentation such as ECG, EEG, and pulse oximeters. The rail-to-rail input/output allows operation from low supply voltages, which is critical for battery-powered devices. The CMOS input provides high impedance, minimizing loading on biological sensors. The wide temperature range (-40°C to +125°C) ensures reliable operation in clinical environments. The low quiescent current (1.3 mA) extends battery life in portable monitors. This makes the AD8606ARZ a trusted choice for precision medical devices.
Recommended
Industrial Sensor Interface
The AD8606ARZ is well-suited for industrial sensor interfaces, including temperature, pressure, and strain gauge applications. Its low offset voltage (65 µV) and low drift ensure accurate measurement over temperature. The rail-to-rail output allows direct connection to ADCs, simplifying the interface. The low input bias current (1 pA) minimizes errors when interfacing with high-impedance sensors. The wide supply range (2.7V to 5.5V) accommodates various industrial power rails. The robust operating temperature range (-40°C to +125°C) ensures reliable operation in factory environments. This makes the AD8606ARZ a versatile choice for industrial automation and process control.
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 | OPA2376AIDR | MCP6V26-E/SN |
|---|---|---|---|---|
| Package | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC |
| Brand | Analog Devices | Analog Devices | Texas Instruments | Microchip Technology |
| Number of Channels | 2 | 2 | 2 | 2 |
| Supply Voltage Range | 2.7V to 5.5V | 2.7V to 5.5V | 2.2V to 5.5V | 2.0V to 5.5V |
| Maximum Offset Voltage | 65 µV | 65 µV | 25 µV | 2 µV (zero-drift) |
| Input Bias Current | 1 pA | 1 pA | 0.5 pA | 1 pA |
| Gain-Bandwidth Product | 10 MHz | 10 MHz | 5.5 MHz | 2 MHz |
| Input Voltage Noise | 6.5 nV/√Hz | 6.5 nV/√Hz | 7.3 nV/√Hz | 12 nV/√Hz |
Key Differentiators
- Low input bias current of 1 pA (vs OPA2376AIDR)
- Wide bandwidth of 10 MHz (vs MCP6V26-E/SN)
- Low noise of 6.5 nV/√Hz (vs ADA4077-2ARZ)
Design Notes
The AD8606ARZ operates from 2.7V to 5.5V. For best performance, use a clean supply and place 0.1 µF ceramic capacitors close to the V+ and V- pins. If the supply is noisy, add a 10 µF tantalum capacitor in parallel. The low quiescent current (1.3 mA per amplifier) makes it suitable for battery-powered designs, but ensure the supply voltage does not exceed 5.5V to avoid damage.
For optimal noise performance, keep the input traces short and shielded. Use a ground plane to minimize noise coupling. Place the feedback resistor and capacitor close to the inverting input to reduce parasitic capacitance. The CMOS input has very high impedance, so avoid long traces that can pick up interference. Use 1% tolerance resistors for precision applications.
Do not exceed the absolute maximum supply voltage of 6V. The input common-mode range extends beyond the rails, but avoid applying voltages outside the supply rails to prevent latch-up. Ensure the output is not shorted to ground for extended periods, as this can cause overheating. For high-impedance sources, the low input bias current (1 pA) is beneficial, but guard rings may be needed to prevent leakage currents on the PCB.
Compliance Information
RoHS compliant and lead-free per Analog Devices product page. AEC-Q100 not applicable for this commercial-grade part.
