AD8539ARZ - Dual Low Power Auto-Zero Op Amp | Analog Devices
MPN: AD8539ARZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.98 | $1.98 |
| 10 | $1.78 | $17.80 |
| 100 | $1.43 | $143.00 |
| 500 | $1.21 | $605.00 |
| 1,000 | $0.98 | $980.00 |
Drop-in alternatives for AD8539ARZ — 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:
AD8539ARZ-REEL
✅ Drop-In📋 Reference alternative (not in catalog)
OPA2333AIDR
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MCP6V11-E/SN
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LTC2051CS8
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AD8539ARZ Maximum Ratings & Electrical Characteristics
| Number of Channels | 2 |
| Supply Voltage Range | 2.7 V to 5.5 V (single), ±1.35 V to ±2.75 V (dual) |
| Supply Current per Amplifier | 215 µA max at 5.0 V |
| Input Offset Voltage | 10 µV max |
| Offset Drift | 0.05 µV/°C typical |
| Input Bias Current | 15 pA typical |
| Gain-Bandwidth Product | 430 kHz |
| Slew Rate | 0.4 V/µs |
| Open-Loop Gain | 130 dB |
| Common-Mode Rejection Ratio | 130 dB |
| Operating Temperature Range | -40°C to +125°C |
| Package | 8-lead SOIC (narrow body) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Amplifier Type | Auto-Zero (Zero-Drift) |
AD8539ARZ 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
AD8539ARZ is suitable for 6 applications: Precision Sensor Interface, Medical Instrumentation, Battery-Powered Devices, Industrial Process Control, Test and Measurement Equipment, Automotive Electronics.
Precision Sensor Interface
The AD8539ARZ's ultra-low offset voltage of 10 µV and low drift of 0.05 µV/°C make it ideal for amplifying small signals from sensors such as thermocouples, RTDs, and strain gauges. Its low input bias current of 15 pA minimizes errors when interfacing with high-impedance sensors. The dual-channel configuration allows simultaneous conditioning of multiple sensors, while the low supply current of 215 µA per amplifier is suitable for battery-powered data acquisition systems. The auto-zero architecture ensures accurate measurement over temperature and time, making it a reliable choice for industrial and medical sensing applications.
Recommended
Medical Instrumentation
In medical devices such as patient monitors and diagnostic equipment, the AD8539ARZ provides the precision and low power required for accurate biopotential measurements. Its low offset and drift ensure reliable ECG and EEG signal amplification, while the low supply current extends battery life in portable monitors. The wide operating temperature range of -40°C to +125°C allows use in sterilization and transport environments. The dual-channel design enables multi-lead configurations, and the small SOIC package fits compact medical devices. The auto-zero architecture reduces the need for calibration, simplifying design and maintenance.
Recommended
Battery-Powered Devices
The AD8539ARZ is optimized for battery-powered applications, drawing less than 215 µA per amplifier at 5.0 V. This low power consumption, combined with operation from supplies as low as 2.7 V, makes it ideal for portable instruments, wireless sensors, and wearable devices. The dual-channel configuration reduces component count, saving board space and cost. The precision specifications ensure accurate measurements in battery-monitoring circuits and low-power data acquisition systems. The auto-zero feature maintains accuracy as the battery voltage declines, ensuring consistent performance throughout the battery's life.
Recommended
Industrial Process Control
In industrial environments, the AD8539ARZ provides the precision and stability needed for process control loops, such as temperature and pressure monitoring. Its low offset voltage and drift ensure accurate 4-20 mA loop signal conditioning, while the wide supply range accommodates various industrial power rails. The operating temperature range of -40°C to +125°C allows deployment in harsh factory conditions. The dual-channel design enables redundant measurement paths, enhancing system reliability. The low power consumption reduces heat generation, improving long-term stability in enclosed control cabinets.
Recommended
Test and Measurement Equipment
The AD8539ARZ is well-suited for test and measurement equipment, such as digital multimeters and data loggers, where precision and low drift are essential. Its ultra-low offset voltage of 10 µV and high open-loop gain of 130 dB ensure accurate amplification of small signals. The low input bias current minimizes loading on high-impedance sources, preserving measurement accuracy. The dual-channel configuration allows simultaneous measurement of multiple signals, improving throughput. The auto-zero architecture eliminates the need for manual offset calibration, reducing production costs and improving long-term accuracy.
Recommended
Automotive Electronics
The AD8539ARZ is suitable for automotive applications such as battery management systems and sensor interfaces, thanks to its wide operating temperature range and low power consumption. Its precision specifications ensure accurate measurement of battery voltage and current, while the low offset drift maintains accuracy over the vehicle's operating temperature range. The dual-channel design allows monitoring of multiple parameters, and the small SOIC package fits in space-constrained electronic control units. The auto-zero architecture provides reliable performance in the presence of electrical noise, common in automotive environments.
Recommended
Recommended Products Summary
Engineering reference data for AD8539ARZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD8539ARZ-REEL | OPA2333AIDR | LTC2051CS8 |
|---|---|---|---|---|
| Package | 8-lead SOIC | 8-lead SOIC | 8-lead SOIC | 8-lead SOIC |
| Brand | Analog Devices | Analog Devices | Texas Instruments | 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 | 1.8 V to 5.5 V | 2.7 V to 11 V |
| Supply Current per Amplifier | 215 µA max | 215 µA max | 350 µA max | 750 µA max |
| Input Offset Voltage | 10 µV max | 10 µV max | 10 µV max | 0.5 µV max |
| Gain-Bandwidth Product | 430 kHz | 430 kHz | 350 kHz | 3 MHz |
| Slew Rate | 0.4 V/µs | 0.4 V/µs | 0.16 V/µs | 2 V/µs |
Key Differentiators
- Lower supply current than OPA2333 (vs OPA2333AIDR)
- Wider supply voltage range than OPA2333 (vs OPA2333AIDR)
- Higher bandwidth than OPA2333 (vs OPA2333AIDR)
Design Notes
Ensure adequate power supply decoupling by placing a 0.1 µF ceramic capacitor as close as possible to the V+ and V- pins. For best performance, use a 10 µF tantalum capacitor in parallel for low-frequency decoupling. The AD8539ARZ operates from 2.7 V to 5.5 V single supply, so verify the supply voltage does not exceed the absolute maximum ratings.
For optimal performance, use a ground plane and keep the input traces short and shielded from noise sources. The auto-zero architecture may introduce a small amount of switching noise at the output, so a low-pass filter may be needed in noise-sensitive applications. Place the filter components close to the output pin.
Avoid exceeding the input common-mode voltage range, which is from V- to V+ - 1.2 V. The AD8539ARZ is not a rail-to-rail input amplifier, so ensure the input signals stay within the specified range. Also, do not leave unused inputs floating; tie them to a suitable voltage, such as mid-supply, to prevent oscillation.
Compliance Information
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified.
