Overview
The OPA177GS/2K5E4 from Texas Instruments is a precision bipolar operational amplifier known for its high performance and low cost. This device features very low offset voltage and drift, making it an excellent choice for a wide range of precision instrumentation. The laser-trimmed offset, drift, and input bias current of the OPA177 virtually eliminate the need for costly external trimming. Its low quiescent current reduces warm-up drift and errors due to thermoelectric effects in input interconnections, providing an effective alternative to chopper-stabilized amplifiers. The OPA177 is available in 8-pin plastic DIP and SO-8 surface-mount packages.
Key Specifications
| Parameter | Value |
|---|---|
| Offset Voltage | 25 µV (max) |
| Offset Voltage Drift | 0.3 µV/°C (max) |
| Open-Loop Gain | 134 dB (min) |
| Quiescent Current | 1.3 mA (typ) |
| Input Bias Current | ±2 nA (max) |
| Supply Voltage Range | 6 V to 36 V |
| Package Type | 8-pin SOIC (D), 8-pin plastic DIP |
| Operating Temperature Range | Varies by package (check datasheet for specifics) |
Key Features
- Low offset voltage: 25 µV (max)
- Low offset voltage drift: 0.3 µV/°C (max)
- High open-loop gain: 134 dB (min)
- Low quiescent current: 1.3 mA (typ)
- Low input bias current: ±2 nA (max)
- Wide supply voltage range: 6 V to 36 V
- Replaces industry-standard op amps: OP-07, OP-77, OP-177, AD707, and more
- Laser-trimmed offset, drift, and input bias current
- Low noise to maintain maximum signal integrity
Applications
The OPA177GS/2K5E4 is suitable for a wide range of precision instrumentation applications, including but not limited to:
- Precision amplifiers and buffers
- High-accuracy measurement systems
- Medical devices requiring low noise and high precision
- Aerospace and defense applications where high reliability is crucial
- Industrial control systems requiring precise signal processing
Q & A
- What is the maximum offset voltage of the OPA177GS/2K5E4?
The maximum offset voltage is 25 µV.
- What is the typical quiescent current of the OPA177GS/2K5E4?
The typical quiescent current is 1.3 mA.
- What is the supply voltage range for the OPA177GS/2K5E4?
The supply voltage range is from 6 V to 36 V.
- What types of packages are available for the OPA177GS/2K5E4?
The device is available in 8-pin plastic DIP and SO-8 surface-mount packages.
- Does the OPA177GS/2K5E4 replace any industry-standard op amps?
Yes, it replaces industry-standard op amps such as OP-07, OP-77, OP-177, AD707, and more.
- What is the significance of the laser-trimmed offset, drift, and input bias current in the OPA177GS/2K5E4?
The laser-trimmed offset, drift, and input bias current virtually eliminate the need for costly external trimming.
- How does the OPA177GS/2K5E4 compare to chopper-stabilized amplifiers?
The OPA177GS/2K5E4 provides an effective alternative to chopper-stabilized amplifiers due to its low quiescent current and low noise.
- What are some common applications for the OPA177GS/2K5E4?
Common applications include precision amplifiers, high-accuracy measurement systems, medical devices, aerospace and defense, and industrial control systems.
- What is the minimum open-loop gain of the OPA177GS/2K5E4?
The minimum open-loop gain is 134 dB.
- What is the maximum input bias current of the OPA177GS/2K5E4?
The maximum input bias current is ±2 nA.
