ADA4522-2ARZ - Dual 55V Zero-Drift Op Amp | Analog Devices
MPN: ADA4522-2ARZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.42 | $3.42 |
| 10 | $3.08 | $30.80 |
| 100 | $2.56 | $256.00 |
| 500 | $2.31 | $1,155.00 |
| 1,000 | $2.08 | $2,080.00 |
Drop-in alternatives for ADA4522-2ARZ — 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
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View Datasheet →OPA2188
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OPA2192
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ADA4522-2ARZ Maximum Ratings & Electrical Characteristics
| Number of Channels | 2 |
| Supply Voltage Range | 4.5 V to 55 V |
| Dual Supply Voltage Range | ±2.25 V to ±27.5 V |
| Offset Voltage | 1.5 µV (typical) |
| Offset Voltage Drift | 0.002 µV/°C |
| Input Bias Current | 50 pA (typical) |
| Noise Density | 5.8 nV/√Hz at 1 kHz |
| Gain-Bandwidth Product | 2.7 MHz |
| Slew Rate | 1.2 V/µs |
| Output Type | Rail-to-Rail |
| Input Type | Ground-Sensing |
| Supply Current (per amplifier) | 1.2 mA |
| Operating Temperature Range | -40°C to +125°C |
| Package | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Lead-Free | Yes |
ADA4522-2ARZ 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 or ground |
| 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
ADA4522-2ARZ is suitable for 6 applications: Precision Data Acquisition, Weigh Scale and Load Cell, Thermocouple and RTD Signal Conditioning, Battery Monitoring, Industrial Process Control, Automotive Sensor Interfaces.
Precision Data Acquisition
The ADA4522-2ARZ is ideal for precision data acquisition systems where low offset and drift are critical. Its 1.5 µV offset and 0.002 µV/°C drift ensure accurate measurement over time and temperature. The wide supply range of up to 55V allows direct interfacing with high-voltage sensors. The rail-to-rail output maximizes dynamic range, and the low noise of 5.8 nV/√Hz preserves signal integrity. In a typical DAQ system, the amplifier is used to buffer and condition sensor signals before ADC conversion, ensuring high accuracy.
Recommended
Weigh Scale and Load Cell
In weigh scale applications, the ADA4522-2ARZ provides the low offset and drift needed for accurate weight measurement. The zero-drift architecture eliminates offset errors that would otherwise cause measurement drift. The ground-sensing inputs allow direct connection to bridge sensors. The low noise ensures stable readings even at low signal levels. The wide supply voltage range supports both battery and line-powered scales. The amplifier's EMI immunity reduces errors from environmental interference, making it suitable for industrial scales.
Recommended
Thermocouple and RTD Signal Conditioning
The ADA4522-2ARZ is well-suited for thermocouple and RTD signal conditioning due to its low offset and drift. Thermocouple signals are in the millivolt range, requiring an amplifier with low input offset to avoid errors. The zero-drift feature ensures that offset does not change with temperature, which is critical for accurate temperature measurement. The low noise of 5.8 nV/√Hz allows small signals to be amplified without adding significant noise. The wide supply range and rail-to-rail output make it easy to interface with ADCs.
Recommended
Battery Monitoring
In battery monitoring systems, the ADA4522-2ARZ is used to sense current and voltage with high accuracy. Its low offset and drift ensure precise measurement of battery state-of-charge. The wide supply voltage range allows direct connection to battery stacks up to 55V. The ground-sensing inputs enable low-side current sensing. The low power consumption of 1.2 mA per amplifier is beneficial for battery-powered systems. The EMI immunity helps maintain accuracy in noisy automotive environments.
Recommended
Industrial Process Control
The ADA4522-2ARZ is ideal for industrial process control applications where precision and reliability are paramount. Its zero-drift performance ensures stable operation over time and temperature, reducing calibration requirements. The wide supply range of up to 55V makes it compatible with industrial power rails. The EMI immunity is crucial in factory environments with high electromagnetic interference. The rail-to-rail output allows direct drive of ADCs and controllers. The extended temperature range of -40°C to +125°C ensures operation in harsh conditions.
Recommended
Automotive Sensor Interfaces
In automotive applications, the ADA4522-2ARZ is used for sensor signal conditioning, such as pressure and temperature sensors. Its wide supply range of up to 55V is compatible with automotive battery voltages. The zero-drift architecture ensures accurate measurement over the vehicle's operating temperature range. The EMI immunity is essential for withstanding the electromagnetic environment of a vehicle. The low offset and drift improve the accuracy of safety-critical systems. The SOIC-8 package is robust and suitable for automotive PCBs.
Recommended
Recommended Products Summary
Engineering reference data for ADA4522-2ARZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADA4522-2ARMZ-R7 | OPA2188 | OPA2192 |
|---|---|---|---|---|
| Package | SOIC-8 | MSOP-8 | SOIC-8 | SOIC-8 |
| Brand | Analog Devices | Analog Devices | Texas Instruments | Texas Instruments |
| Number of Channels | 2 | 2 | 2 | 2 |
| Supply Voltage Range | 4.5V to 55V | 4.5V to 55V | 4.5V to 36V | 4.5V to 36V |
| Offset Voltage | 1.5 µV | 1.5 µV | 25 µV | 5 µV |
| Offset Drift | 0.002 µV/°C | 0.002 µV/°C | 0.05 µV/°C | 0.05 µV/°C |
| Noise Density | 5.8 nV/√Hz | 5.8 nV/√Hz | 8.8 nV/√Hz | 5.5 nV/√Hz |
| Gain-Bandwidth Product | 2.7 MHz | 2.7 MHz | 2 MHz | 10 MHz |
Key Differentiators
- Ultra-low offset drift of 0.002 µV/°C (vs OPA2188)
- Wide supply voltage range up to 55V (vs OPA2188)
- EMI enhanced with on-chip filtering (vs OPA2192)
Design Notes
The ADA4522-2ARZ 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 rating of 60V. Use 0.1µF ceramic capacitors close to the V+ and V- pins for decoupling, and a 10µF capacitor for bulk decoupling if the supply is noisy.
For optimal performance, place the ADA4522-2ARZ away from high-frequency digital circuits. Use a solid ground plane and keep the input traces short and shielded if necessary. The SOIC-8 package has a thermal pad on the bottom; connect it to the ground plane for better heat dissipation.
Avoid exceeding the input common-mode range, which includes ground but not the positive rail. The device is not rail-to-rail input, so ensure the input voltage stays within the specified range. Also, do not leave unused inputs floating; tie them to a suitable voltage to prevent oscillation.
Compliance Information
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified; for automotive, consider ADA4522-2ARZ-R7 which may have automotive qualification.