Overview
The OPA2277UAE4 is a high-precision operational amplifier produced by Texas Instruments. It is part of the OPAx277 series, which replaces the industry standard OP-177. These amplifiers are known for their ultra-low offset voltage, ultra-low drift, high open-loop gain, and high common-mode rejection. They offer improved noise performance, a wider output voltage swing, and are twice as fast with half the quiescent current compared to their predecessors. The OPA2277UAE4 is available in single, dual, and quad versions, providing maximum design flexibility.
Key Specifications
| Parameter | Unit | Min | Typ | Max |
|---|---|---|---|---|
| Input Offset Voltage | µV | ±10 | ±20 | ±20 |
| Input Offset Voltage Drift | µV/°C | ±0.1 | ±0.15 | ±0.25 |
| Open-Loop Gain | dB | 134 | ||
| Common-Mode Rejection Ratio | dB | 140 | ||
| Power Supply Rejection Ratio | dB | 130 | ||
| Input Bias Current | nA | ±1 | ±2.8 | |
| Supply Voltage Range | V | ±2 | ±18 | |
| Quiescent Current | µA/amplifier | 800 | ||
| Operating Temperature Range | °C | -40 | 85 | |
| Package Type | SOIC (8 pins) |
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
- Replaces OP-07, OP-77, and OP-177
- Completely independent circuitry in dual and quad versions for lowest crosstalk
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 OPA2277UAE4?
The input offset voltage is ±10 µV.
- What is the input offset voltage drift of the OPA2277UAE4?
The input offset voltage drift is ±0.1 µV/°C.
- What is the open-loop gain of the OPA2277UAE4?
The open-loop gain is 134 dB.
- What is the common-mode rejection ratio of the OPA2277UAE4?
The common-mode rejection ratio is 140 dB.
- What is the power supply rejection ratio of the OPA2277UAE4?
The power supply rejection ratio is 130 dB.
- What is the input bias current of the OPA2277UAE4?
The input bias current is ±1 nA maximum.
- What is the supply voltage range of the OPA2277UAE4?
The supply voltage range is ±2 V to ±18 V.
- What is the quiescent current of the OPA2277UAE4?
The quiescent current is 800 µA per amplifier.
- What are the available package types for the OPA2277UAE4?
The OPA2277UAE4 is available in SOIC (8 pins) package.
- What are some common applications of the OPA2277UAE4?
Common applications include analog input modules, weigh scales, temperature transmitters, pressure transmitters, data acquisition systems, lab and field instrumentation, and battery testing.
