ADA4522-4ARUZ-RL7 - Quad 55V Zero-Drift Op Amp | Analog Devices
MPN: ADA4522-4ARUZ-RL7 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.5 | $4.50 |
| 10 | $4.05 | $40.50 |
| 100 | $3.6 | $360.00 |
| 500 | $3.24 | $1,620.00 |
| 1,000 | $2.88 | $2,880.00 |
Drop-in alternatives for ADA4522-4ARUZ-RL7 — 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:
ADA4522-4ARUZ-R7
✅ Drop-In📋 Reference alternative (not in catalog)
ADA4522-4ARUZ
✅ Drop-In📋 Reference alternative (not in catalog)
ADA4522-4ARUZ-RL
✅ Drop-In📋 Reference alternative (not in catalog)
ADA4522-4ARUZ-RL7 Maximum Ratings & Electrical Characteristics
| Number of Channels | 4 |
| Supply Voltage Range | 4.5 V to 55 V |
| Dual Supply Voltage Range | ±2.25 V to ±27.5 V |
| Input Offset Voltage | 5 µV (typical) |
| Offset Voltage Drift | 0.002 µV/°C (typical) |
| Gain Bandwidth Product | 2.5 MHz |
| Quiescent Current per Amplifier | 1.5 mA |
| Common-Mode Rejection Ratio (CMRR) | 140 dB (typical) |
| Power Supply Rejection Ratio (PSRR) | 150 dB (typical) |
| Input Voltage Noise Density | 5.8 nV/√Hz at 1 kHz |
| Output Type | Rail-to-Rail |
| Input Type | Ground-Sensing |
| Operating Temperature Range | -40°C to +125°C |
| Package | 14-Lead TSSOP |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
ADA4522-4ARUZ-RL7 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+ — Positive power 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 | OUT C — Output of amplifier C |
| Pin 9 | -IN C — Inverting input of amplifier C |
| Pin 10 | +IN C — Non-inverting input of amplifier C |
| Pin 11 | V- — Negative power supply (or ground in single-supply) |
| Pin 12 | +IN D — Non-inverting input of amplifier D |
| Pin 13 | -IN D — Inverting input of amplifier D |
| Pin 14 | OUT D — Output of amplifier D |
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
ADA4522-4ARUZ-RL7 is suitable for 6 applications: Precision Weigh Scales, Thermocouple Signal Conditioning, Industrial Process Control, Medical Instrumentation, Battery-Powered Systems, Data Acquisition Systems.
Precision Weigh Scales
The ADA4522-4ARUZ-RL7's ultra-low offset voltage of 5 µV and drift of 0.002 µV/°C ensure accurate weight measurements over time and temperature. Its high CMRR of 140 dB rejects common-mode noise from the bridge excitation, while the rail-to-rail output maximizes dynamic range. The quad configuration allows amplification of multiple load cells in a single package, reducing board space and cost. The wide supply range of 4.5V to 55V accommodates both battery-powered and industrial scales.
Recommended
Thermocouple Signal Conditioning
The ADA4522-4ARUZ-RL7 is ideal for thermocouple signal conditioning due to its low offset and drift, which are critical for accurate temperature measurement. The ground-sensing input allows direct connection to the thermocouple's cold junction, simplifying the circuit. The low noise of 5.8 nV/√Hz ensures minimal signal degradation, and the wide supply range supports both 5V and 24V systems. The quad channel configuration can handle multiple thermocouple inputs, making it suitable for multi-channel data loggers.
Recommended
Industrial Process Control
In industrial process control, the ADA4522-4ARUZ-RL7 provides precise signal conditioning for sensors such as pressure transmitters and flow meters. Its high PSRR of 150 dB ensures stable operation in noisy industrial environments with fluctuating power supplies. The extended temperature range of -40°C to +125°C allows deployment in harsh conditions. The quad configuration enables compact multi-channel control loops, reducing component count and improving reliability.
Recommended
Medical Instrumentation
The ADA4522-4ARUZ-RL7 is well-suited for medical instrumentation such as patient monitors and diagnostic equipment, where precision and low noise are paramount. Its ultra-low offset and drift ensure accurate biopotential measurements, while the rail-to-rail output allows direct interface to ADCs. The low quiescent current of 1.5 mA per channel is beneficial for battery-powered portable devices. The device's EMI-enhanced inputs reduce interference from nearby electronics, improving signal integrity.
Recommended
Battery-Powered Systems
For battery-powered systems, the ADA4522-4ARUZ-RL7 offers a balance of low power consumption and high precision. The 1.5 mA quiescent current per amplifier extends battery life, while the 4.5V minimum supply voltage is compatible with single-cell lithium-ion batteries. The ground-sensing input allows direct measurement of battery voltage without level shifting. The quad configuration reduces the number of components, saving board space and power.
Recommended
Data Acquisition Systems
The ADA4522-4ARUZ-RL7 is a key component in data acquisition systems, providing precision signal conditioning for a variety of sensors. Its high CMRR and PSRR ensure accurate measurements in electrically noisy environments. The wide supply range allows operation from common industrial rails, and the rail-to-rail output maximizes ADC input range. The quad channel configuration enables simultaneous sampling of multiple signals, improving system throughput.
Recommended
Recommended Products Summary
Engineering reference data for ADA4522-4ARUZ-RL7 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADA4522-4ARUZ-R7 | ADA4522-4ARUZ | ADA4522-4ARUZ-RL |
|---|---|---|---|---|
| Package | 14-Lead TSSOP | 14-Lead TSSOP | 14-Lead TSSOP | 14-Lead TSSOP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Number of Channels | 4 | 4 | 4 | 4 |
| Supply Voltage Range | 4.5V to 55V | 4.5V to 55V | 4.5V to 55V | 4.5V to 55V |
| Input Offset Voltage | 5 µV | 5 µV | 5 µV | 5 µV |
| Gain Bandwidth Product | 2.5 MHz | 2.5 MHz | 2.5 MHz | 2.5 MHz |
| Quiescent Current per Amplifier | 1.5 mA | 1.5 mA | 1.5 mA | 1.5 mA |
| Operating Temperature Range | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C |
Key Differentiators
- Ultra-low offset voltage of 5 µV (vs ADA4522-2ARZ-RL7)
- Wide supply range up to 55V (vs ADA4522-1ARZ-RL7)
- Ground-sensing inputs (vs ADA4522-2ARZ-RL7)
Design Notes
For optimal performance, bypass the V+ and V- pins with 0.1 µF ceramic capacitors placed as close to the pins as possible. Additionally, a 10 µF tantalum capacitor on each supply rail can help filter low-frequency noise. The ADA4522-4 has a PSRR of 150 dB, but external filtering ensures the power supply does not introduce noise into the signal path.
To minimize parasitic capacitance and noise pickup, keep the input traces short and shielded if necessary. The ground-sensing input allows direct connection to ground, but ensure the ground plane is continuous under the device. Use a solid ground plane to reduce EMI and improve thermal performance.
Do not exceed the absolute maximum supply voltage of 60V. Also, ensure the input common-mode voltage stays within the specified range (0V to V+ - 1.5V for single-supply). Exceeding these limits can damage the device or cause incorrect operation. Unused channels should be configured as buffers with inputs tied to mid-supply to avoid oscillation.
Compliance Information
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified; for automotive, consider ADA4522-4ARUZ-R7 (same part, no automotive grade).
