OP177GPZ - Ultraprecision Op Amp, 8-PDIP | Analog Devices
MPN: OP177GPZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.85 | $4.85 |
| 10 | $4.36 | $43.60 |
| 100 | $3.88 | $388.00 |
| 500 | $3.49 | $1,745.00 |
| 1,000 | $3.1 | $3,100.00 |
Drop-in alternatives for OP177GPZ — 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:
OP177FPZ
✅ Drop-In📋 Reference alternative (not in catalog)
OP07DPZ
✅ Drop-In📋 Reference alternative (not in catalog)
OP27GPZ
✅ Drop-In📋 Reference alternative (not in catalog)
OP177GPZ Maximum Ratings & Electrical Characteristics
| Amplifier Type | Standard (General Purpose) |
| Number of Circuits | 1 |
| Output Type | Single-ended |
| Slew Rate | 0.3 V/µs |
| Gain Bandwidth Product | 600 kHz |
| Input Offset Voltage | 25 µV max at 25°C |
| Input Offset Voltage Drift | 0.3 µV/°C max |
| Input Bias Current | 2.8 nA max |
| Supply Voltage Range | ±3 V to ±18 V |
| Supply Current | 1.6 mA typical |
| Common Mode Rejection Ratio | 130 dB typical |
| Power Supply Rejection Ratio | 120 dB typical |
| Operating Temperature Range | -40°C to +85°C |
| Package | 8-PDIP |
| Mounting Type | Through Hole |
| RoHS Status | Compliant |
OP177GPZ Pin Configuration
| Pin 1 | OFFSET NULL — Offset null adjustment |
| Pin 2 | IN- — Inverting input |
| Pin 3 | IN+ — Non-inverting input |
| Pin 4 | V- — Negative supply |
| Pin 5 | OFFSET NULL — Offset null adjustment |
| Pin 6 | OUT — Output |
| Pin 7 | V+ — Positive supply |
| Pin 8 | NC — No connection |
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
OP177GPZ is suitable for 6 applications: Precision Instrumentation, Thermocouple Signal Conditioning, Medical Instrumentation, Data Acquisition Systems, Industrial Process Control, Precision Voltage References.
Precision Instrumentation
The OP177GPZ's ultralow offset voltage (25 µV) and drift (0.3 µV/°C) make it ideal for precision instrumentation amplifiers, ensuring accurate measurement of small signals in test equipment and data acquisition systems. Its low noise and high CMRR (130 dB) reject common-mode interference, maintaining signal integrity in noisy industrial environments. The device operates from ±3 V to ±18 V, allowing use in both battery-powered and line-powered instruments. With a gain bandwidth of 600 kHz, it is suitable for DC and low-frequency AC measurements. The 8-PDIP package simplifies prototyping and through-hole assembly, making it a reliable choice for laboratory and field instruments.
Recommended
Thermocouple Signal Conditioning
The OP177GPZ is well-suited for thermocouple signal conditioning due to its low offset voltage and drift, which minimize measurement errors over temperature. Its low input bias current (2.8 nA) reduces errors caused by source impedance. The device's high CMRR rejects ground noise in industrial settings. Operating from ±3 V to ±18 V, it can interface with various ADC reference voltages. The 600 kHz bandwidth is adequate for thermocouple signals, which are slowly varying. The 8-PDIP package is easy to integrate into existing through-hole designs. For cold-junction compensation, an external temperature sensor can be used with the op amp to achieve high accuracy.
Recommended
Medical Instrumentation
In medical instrumentation, the OP177GPZ provides the precision required for ECG, EEG, and blood pressure monitoring. Its low offset voltage and drift ensure accurate biopotential amplification, while low noise (8 nV/√Hz) preserves small signal details. The device operates from low supply voltages (±3 V), making it suitable for battery-powered portable monitors. Its high CMRR (130 dB) rejects 50/60 Hz interference from mains. The 8-PDIP package is compatible with through-hole PCB assembly, which is still used in some medical devices. The OP177's reliability and long-term stability are critical for patient safety and consistent readings.
Recommended
Data Acquisition Systems
The OP177GPZ is an excellent choice for data acquisition systems requiring high DC accuracy. Its low offset voltage and drift ensure that amplified sensor signals are not corrupted by amplifier errors. The device's low noise improves the effective resolution of the ADC. With a supply range of ±3 V to ±18 V, it can be used in both single-supply and dual-supply systems. The 600 kHz bandwidth is sufficient for most sensor signals, which are typically below 100 kHz. The 8-PDIP package is easy to handle in prototyping and low-volume production. For multi-channel systems, multiple OP177s can be used without significant power consumption (1.6 mA each).
Recommended
Industrial Process Control
In industrial process control, the OP177GPZ provides the precision needed for accurate sensor signal conditioning in temperature, pressure, and flow measurement. Its low offset voltage and drift ensure long-term stability, reducing calibration frequency. The device's wide supply range (±3 V to ±18 V) accommodates various industrial power rails. Its high CMRR and PSRR reject noise from motors and power lines. The 8-PDIP package is robust and easy to replace in field maintenance. The OP177's low power consumption (1.6 mA) is beneficial in loop-powered transmitters. Its 600 kHz bandwidth is adequate for process control signals, which are typically slow.
Recommended
Precision Voltage References
The OP177GPZ can be used in precision voltage reference circuits to buffer and amplify reference voltages. Its low offset voltage and drift ensure that the output voltage remains accurate over temperature. The device's low noise reduces reference noise, which is critical in high-resolution ADC systems. With a supply range of ±3 V to ±18 V, it can be used with various reference ICs. The 8-PDIP package is convenient for breadboarding and prototyping. The OP177's high open-loop gain ensures excellent load regulation. For example, it can buffer a 2.5 V reference to drive multiple ADC inputs without significant loading errors.
Recommended
Recommended Products Summary
Engineering reference data for OP177GPZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | OP177FPZ | OP07DPZ | OP27GPZ |
|---|---|---|---|---|
| Package | 8-PDIP | 8-PDIP | 8-PDIP | 8-PDIP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Input Offset Voltage (max) | 25 µV | 25 µV | 75 µV | 25 µV |
| Offset Voltage Drift (max) | 0.3 µV/°C | 0.3 µV/°C | 0.5 µV/°C | 0.6 µV/°C |
| Input Bias Current (max) | 2.8 nA | 2.8 nA | 4 nA | 40 nA |
| Gain Bandwidth Product | 600 kHz | 600 kHz | 600 kHz | 8 MHz |
| Supply Voltage Range | ±3 V to ±18 V | ±3 V to ±18 V | ±3 V to ±18 V | ±4 V to ±18 V |
| Supply Current (typical) | 1.6 mA | 1.6 mA | 1.6 mA | 3.2 mA |
Key Differentiators
- Ultralow offset voltage drift of 0.3 µV/°C (vs OP07DPZ)
- Lower input bias current of 2.8 nA (vs OP27GPZ)
- Same precision as OP177FPZ but in PDIP package (vs OP177FPZ)
Design Notes
For optimal DC performance, use a guard ring around the input pins to minimize leakage currents. Keep the feedback network close to the op amp and use low-value resistors to reduce noise and offset errors. A 0.1 µF ceramic capacitor should be placed close to each supply pin to decouple high-frequency noise.
The OP177GPZ in 8-PDIP has a thermal resistance of approximately 100°C/W. At maximum supply voltage (±18 V) and output current, power dissipation can be significant. Ensure adequate airflow or heatsinking if operating at high ambient temperatures. The device is specified for -40°C to +85°C, so keep junction temperature within limits.
Do not exceed the absolute maximum supply voltage of ±22 V. The offset null pins (1 and 5) should be left unconnected if not used, or connected to a potentiometer for offset adjustment. Avoid capacitive loads greater than 100 pF directly on the output, as this may cause instability. Use a series resistor if driving long cables.
Compliance Information
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified.
