OP2177ARZ - Dual Precision Low Noise Op Amp | Analog Devices
MPN: OP2177ARZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.42 | $3.42 |
| 10 | $3.08 | $30.80 |
| 100 | $2.47 | $247.00 |
| 500 | $2.1 | $1,050.00 |
| 1,000 | $1.78 | $1,780.00 |
Drop-in alternatives for OP2177ARZ — 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:
OP2177ARZ-REEL7
✅ Drop-In✓ In Stock
$2.25 / Unit
View Datasheet →OP2177ARS
✅ Drop-In📋 Reference alternative (not in catalog)
AD8629ARZ-REEL7
✅ Drop-In✓ In Stock
$1.45 / Unit
View Datasheet →ADA4610-2ARZ
✅ Drop-In✓ In Stock
$2.19 / Unit
View Datasheet →OP2134
✅ Drop-In📋 Reference alternative (not in catalog)
OP2177ARZ Maximum Ratings & Electrical Characteristics
| Number of Channels | 2 |
| Gain Bandwidth Product | 1.3 MHz |
| Slew Rate | 0.7 V/µs |
| Input Offset Voltage | 60 µV max |
| Input Offset Voltage Drift | 0.7 µV/°C max |
| Input Bias Current | 2 nA max |
| Input Offset Current | 0.2 nA |
| Voltage Noise Density | 8 nV/√Hz typical |
| CMRR | 120 dB min |
| PSRR | 120 dB min |
| Open Loop Gain (AVO) | 120 dB min |
| Supply Current per Amplifier | 400 µA |
| Supply Voltage Range | ±2.5 V to ±15 V |
| Operating Temperature Range | -40°C to +125°C |
| Package | 8-SOIC |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
OP2177ARZ 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 |
| 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
OP2177ARZ is suitable for 6 applications: Precision Instrumentation, Medical Instrumentation, Industrial Process Control, Audio Preamplifiers, Active Filters, Data Acquisition Systems.
Precision Instrumentation
The OP2177ARZ's low offset voltage (60 µV max) and low drift (0.7 µV/°C) make it ideal for precision instrumentation amplifiers. In a typical bridge sensor interface, the op amp amplifies small differential signals while rejecting common-mode noise. Its high CMRR of 120 dB ensures accurate measurement in industrial environments. The low input bias current of 2 nA minimizes errors when interfacing with high-impedance sensors. This results in high accuracy and stability over temperature, essential for data acquisition systems.
Recommended
Medical Instrumentation
In medical devices such as ECG and EEG monitors, the OP2177ARZ provides low-noise amplification of bio-potential signals. Its 8 nV/√Hz noise density ensures that small physiological signals are not buried in noise. The low supply current of 400 µA per amplifier extends battery life in portable monitors. The wide supply range allows operation from a single 5V rail or dual supplies. The device's precision and reliability meet the stringent requirements of medical electronics.
Recommended
Industrial Process Control
The OP2177ARZ is well-suited for industrial process control loops, where accuracy and stability are paramount. It can be used in PID controllers, signal conditioning for 4-20 mA loops, and motor control feedback. Its high open-loop gain (120 dB) ensures linearity, while the low offset voltage reduces control error. The extended temperature range of -40°C to +125°C allows operation in harsh factory environments. The device's robustness and precision make it a reliable choice for industrial automation.
Recommended
Audio Preamplifiers
The OP2177ARZ can be used in high-quality audio preamplifiers and active filters. Its low noise (8 nV/√Hz) and low distortion preserve audio fidelity. The dual-channel configuration is ideal for stereo applications. The device operates from ±15V supplies, providing ample headroom for audio signals. While its 1.3 MHz bandwidth is sufficient for audio frequencies, the low offset voltage ensures DC accuracy in servo circuits. This makes it a cost-effective solution for audiophile-grade equipment.
Recommended
Active Filters
The OP2177ARZ is suitable for active filter designs, such as low-pass, high-pass, and band-pass filters. Its gain bandwidth product of 1.3 MHz allows filter cutoff frequencies up to a few hundred kHz. The low offset voltage and drift ensure accurate DC performance in filters with high Q factors. The device's low noise contributes to a high signal-to-noise ratio in the passband. With its dual channels, it can implement second-order filters in a single package, saving board space.
Recommended
Data Acquisition Systems
In data acquisition systems, the OP2177ARZ serves as a buffer or driver for high-resolution ADCs. Its low noise and low offset voltage prevent errors in the conversion process. The low input bias current minimizes loading on the signal source. The device can drive the input of a SAR ADC directly, with proper RC filtering. Its wide supply range allows it to interface with various ADC reference voltages. This ensures accurate digitization of analog signals in industrial and scientific instruments.
Recommended
Recommended Products Summary
Engineering reference data for OP2177ARZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | OP2177ARZ-REEL7 | OP2177ARS | AD8629ARZ-REEL7 | ADA4610-2ARZ |
|---|---|---|---|---|---|
| Package | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Input Offset Voltage | 60 µV max | 60 µV max | 60 µV max | 1 µV max | 50 µV max |
| Voltage Noise Density | 8 nV/√Hz | 8 nV/√Hz | 8 nV/√Hz | 22 nV/√Hz | 7.3 nV/√Hz |
| Gain Bandwidth Product | 1.3 MHz | 1.3 MHz | 1.3 MHz | 2.5 MHz | 16.3 MHz |
| Supply Current per Amplifier | 400 µA | 400 µA | 400 µA | 1 mA | 1.7 mA |
| Input Bias Current | 2 nA max | 2 nA max | 2 nA max | 30 pA max | 2 pA max |
| Slew Rate | 0.7 V/µs | 0.7 V/µs | 0.7 V/µs | 1 V/µs | 61 V/µs |
Key Differentiators
- Low offset voltage and drift (vs AD8629ARZ-REEL7)
- Low supply current (vs ADA4610-2ARZ)
- Wide supply range (vs OP2134)
Design Notes
For optimal performance, use 0.1 µF ceramic capacitors close to the V+ and V- pins to decouple the power supply. Additionally, a 10 µF tantalum capacitor in parallel can help filter low-frequency noise. Ensure the supply voltage does not exceed the absolute maximum ratings of ±18 V to prevent damage.
Place the OP2177ARZ away from high-frequency digital circuits to minimize noise coupling. Use a ground plane to provide a low-impedance return path. Keep input traces short and shielded if necessary. For best performance, use surface-mount components and avoid long traces that can pick up interference.
Do not exceed the input common-mode voltage range, which extends from the negative rail to within 1.5 V of the positive rail. Exceeding this range can cause phase reversal and output saturation. Also, avoid driving capacitive loads greater than 100 pF without a series resistor, as this can cause oscillation.
Compliance Information
RoHS compliant per distributor data. No AEC-Q100 qualification indicated.
