ADA4522-1ARZ - 55V Zero-Drift Op Amp | Analog Devices
MPN: ADA4522-1ARZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.12 | $2.12 |
| 10 | $1.95 | $19.50 |
| 100 | $1.78 | $178.00 |
| 500 | $1.64 | $820.00 |
| 1,000 | $1.55 | $1,550.00 |
Drop-in alternatives for ADA4522-1ARZ — 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:
ADA4522-1ARZ-R7
✅ Drop-In📋 Reference alternative (not in catalog)
ADA4522-2ARZ
✅ Drop-In✓ In Stock
$2.08 / Unit
View Datasheet →OPA189IDR
✅ Drop-In📋 Reference alternative (not in catalog)
LTC2057HV
✅ Drop-In📋 Reference alternative (not in catalog)
ADA4522-1ARZ Maximum Ratings & Electrical Characteristics
| Number of Channels | 1 |
| Supply Voltage Range | 4.5 V to 55 V |
| Dual Supply Voltage Range | ±2.25 V to ±27.5 V |
| Offset Voltage (Max) | 5 µV |
| Offset Voltage Drift (Max) | 22 nV/°C |
| Voltage Noise Density (Typ) | 5.8 nV/√Hz |
| 0.1 Hz to 10 Hz Noise (Typ) | 117 nV p-p |
| Input Bias Current (Typ) | 50 pA |
| Unity-Gain Crossover Frequency (Typ) | 3 MHz |
| Rail-to-Rail Output | Yes |
| Ground-Sensing Inputs | Yes |
| Operating Temperature Range | -40°C to +125°C |
| Package | 8-SOIC |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
ADA4522-1ARZ 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 voltage |
| Pin 5 | +IN B — Non-inverting input of amplifier B (not used in single version) |
| Pin 6 | -IN B — Inverting input of amplifier B (not used in single version) |
| Pin 7 | OUT B — Output of amplifier B (not used in single version) |
| Pin 8 | V+ — Positive supply voltage |
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
ADA4522-1ARZ is suitable for 6 applications: Precision Current Sensing, Sensor Signal Conditioning, Medical Instrumentation, Industrial Process Control, Automotive Battery Monitoring, Test and Measurement Equipment.
Precision Current Sensing
The ADA4522-1ARZ is ideal for precision current sensing in motor control, battery monitoring, and power management. Its low offset voltage (5 µV max) and low drift (22 nV/°C) ensure accurate measurement of small voltages across shunt resistors. The wide supply voltage range (up to 55V) allows direct connection to high-voltage rails without additional level shifting. In a typical high-side sensing configuration, the op amp amplifies the voltage drop across a shunt resistor, and the rail-to-rail output enables direct interfacing with ADCs. The low input bias current (50 pA) minimizes errors in high-impedance paths. For best performance, use a precision shunt resistor with low temperature coefficient and place the op amp close to the sensing element to reduce noise pickup.
Recommended
Sensor Signal Conditioning
The ADA4522-1ARZ is well-suited for conditioning signals from various sensors, including thermocouples, RTDs, and strain gauges. Its ultra-low offset and drift ensure accurate amplification of small sensor outputs. The low noise (5.8 nV/√Hz) preserves signal integrity, and the ground-sensing inputs allow direct connection to sensors referenced to ground. The wide supply voltage range accommodates industrial sensor interfaces. In a typical thermocouple amplifier, the op amp provides high gain with minimal offset error, and the low input bias current prevents loading of the sensor. For RTD applications, a constant current source can be used with the op amp to measure resistance changes. The rail-to-rail output simplifies interfacing with ADCs.
Recommended
Medical Instrumentation
In medical devices such as patient monitors and diagnostic equipment, the ADA4522-1ARZ provides the precision and reliability required for accurate measurements. Its low offset voltage and drift ensure stable readings over time and temperature. The low noise is critical for ECG, EEG, and other biopotential measurements where signal amplitudes are small. The wide supply voltage range allows operation from battery or isolated supplies. The device's small SOIC-8 package is suitable for compact medical devices. In an ECG front-end, the op amp can be used in an instrumentation amplifier configuration to amplify the differential signal while rejecting common-mode noise. The low input bias current minimizes electrode polarization effects.
Recommended
Industrial Process Control
The ADA4522-1ARZ is used in industrial process control systems for precise measurement and control of variables such as temperature, pressure, and flow. Its high accuracy and stability ensure reliable operation in harsh environments. The wide supply voltage range (up to 55V) is compatible with 24V industrial buses. The low offset and drift minimize calibration requirements, reducing maintenance costs. In a pressure transmitter, the op amp amplifies the bridge output, and the rail-to-rail output allows direct connection to a 4-20 mA loop transmitter. The device's robust ESD protection and wide temperature range (-40°C to +125°C) make it suitable for industrial environments.
Recommended
Automotive Battery Monitoring
The ADA4522-1ARZ is ideal for automotive battery monitoring systems, where accurate voltage and current measurement is critical for battery management. Its wide supply voltage range (up to 55V) allows direct connection to 12V, 24V, and 48V battery systems. The low offset and drift ensure accurate state-of-charge estimation. The device operates over the automotive temperature range (-40°C to +125°C) and is available in AEC-Q100 qualified versions. In a battery monitoring system, the op amp amplifies the voltage across a shunt resistor for current sensing, and the rail-to-rail output interfaces with a microcontroller's ADC. The low noise and high PSRR ensure accurate measurements even with noisy automotive power rails.
Recommended
Test and Measurement Equipment
The ADA4522-1ARZ is used in test and measurement equipment such as data acquisition systems, digital multimeters, and precision power supplies. Its high accuracy and low noise are essential for reliable measurements. The wide supply voltage range allows operation from various power rails. The low offset and drift ensure long-term stability, reducing the need for frequent calibration. In a data acquisition system, the op amp can be used as a buffer or gain stage before the ADC. The rail-to-rail output maximizes the ADC's dynamic range. The device's low input bias current is beneficial for high-impedance sources, such as pH probes and photodiodes.
Recommended
Recommended Products Summary
Engineering reference data for ADA4522-1ARZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADA4522-1ARZ-R7 | ADA4522-2ARZ | OPA189IDR | LTC2057HV |
|---|---|---|---|---|---|
| Package | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC |
| Brand | Analog Devices | Analog Devices | Analog Devices | Texas Instruments | Analog Devices |
| Number of Channels | 1 | 1 | 2 | 1 | 1 |
| Supply Voltage Range | 4.5V to 55V | 4.5V to 55V | 4.5V to 55V | 4.5V to 36V | 4.75V to 60V |
| Offset Voltage (Max) | 5 µV | 5 µV | 5 µV | 4 µV | 0.5 µV |
| Offset Voltage Drift (Max) | 22 nV/°C | 22 nV/°C | 22 nV/°C | 0.04 µV/°C | 0.01 µV/°C |
| Voltage Noise Density (Typ) | 5.8 nV/√Hz | 5.8 nV/√Hz | 5.8 nV/√Hz | 5.2 nV/√Hz | 7.5 nV/√Hz |
| Unity-Gain Bandwidth | 3 MHz | 3 MHz | 3 MHz | 14 MHz | 1.5 MHz |
Key Differentiators
- Wide supply voltage range up to 55V (vs OPA189IDR)
- Ultra-low offset voltage drift of 22 nV/°C (vs LTC2057HV)
- Ground-sensing inputs (vs OPA189IDR)
Design Notes
The ADA4522-1ARZ operates from 4.5V to 55V single supply or ±2.25V to ±27.5V dual supply. Ensure the supply voltage does not exceed the absolute maximum ratings. Use 0.1 µF ceramic capacitors close to the V+ and V- pins for decoupling, and a 10 µF bulk capacitor for low-frequency stability.
For best performance, place the ADA4522-1ARZ close to the signal source to minimize trace length and noise pickup. Use a ground plane to reduce noise and provide a low-impedance return path. Keep the input traces short and shielded if necessary. Avoid routing high-speed digital signals near the input pins.
The ADA4522-1ARZ has a rail-to-rail output, but it cannot drive heavy capacitive loads directly. If driving a capacitive load greater than 100 pF, add a series resistor (e.g., 50Ω) to maintain stability. Also, ensure the input common-mode voltage stays within the specified range to avoid output phase reversal.
Compliance Information
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified for the standard version; automotive grade may be available under different suffix.