Overview
The OPA277PG4 is a high-precision operational amplifier produced by Texas Instruments, originally developed by Burr-Brown. This device is part of the OPAx277 series, which replaces industry-standard op-amps like the OP-177. The OPA277PG4 offers improved noise performance, a wider output voltage swing, and is twice as fast as its predecessors while consuming half the quiescent current. It is known for its ultra-low offset voltage and drift, making it suitable for high-precision applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Offset Voltage (VOS) | ±10 | µV |
| Input Offset Voltage Drift (dVOS/dT) | ±0.1 | µV/°C |
| Open-Loop Gain | 134 | dB |
| Common-Mode Rejection Ratio (CMRR) | 140 | dB |
| Power Supply Rejection Ratio (PSRR) | 130 | dB |
| Input Bias Current | 500 | pA |
| Supply Voltage Range | ±2 V to ±18 V | V |
| Quiescent Current | 790 | µA |
| Slew Rate | 0.8 | V/µs |
| Gain Bandwidth Product | 1 | MHz |
| Operating Temperature Range | -40°C to 85°C | °C |
| Package Type | 8-DIP (0.300", 7.62mm) |
Key Features
- Ultra-low offset voltage: 10 µV
- Ultra-low drift: ±0.1 µV/°C
- High open-loop gain: 134 dB
- High common-mode rejection: 140 dB
- High power-supply rejection: 130 dB
- Low bias current: 1 nA maximum
- Wide supply range: ±2 V to ±18 V
- Low quiescent current: 800 µA/amplifier
- Single, dual, and quad versions available
- Unity-gain stable and free from phase inversion and overload problems
- External trim pins available for special applications (OPA277 only)
Applications
- Analog input modules
- Weigh scales
- Temperature transmitters
- Pressure transmitters
- Data acquisition (DAQ) systems
- Lab and field instrumentation
- Battery testing
Q & A
- What is the input offset voltage of the OPA277PG4?
The input offset voltage of the OPA277PG4 is ±10 µV.
- What is the input offset voltage drift of the OPA277PG4?
The input offset voltage drift is ±0.1 µV/°C.
- What is the open-loop gain of the OPA277PG4?
The open-loop gain is 134 dB.
- What is the common-mode rejection ratio (CMRR) of the OPA277PG4?
The CMRR is 140 dB.
- What is the power supply rejection ratio (PSRR) of the OPA277PG4?
The PSRR is 130 dB.
- What is the input bias current of the OPA277PG4?
The input bias current is 500 pA.
- What is the supply voltage range of the OPA277PG4?
The supply voltage range is ±2 V to ±18 V.
- What is the quiescent current of the OPA277PG4?
The quiescent current is 790 µA.
- What is the slew rate of the OPA277PG4?
The slew rate is 0.8 V/µs.
- What are some common applications of the OPA277PG4?
Common applications include analog input modules, weigh scales, temperature transmitters, pressure transmitters, data acquisition systems, lab and field instrumentation, and battery testing.
