Overview
The OPA277UAE4, part of the OPAx277 series, is a high-precision operational amplifier produced by Texas Instruments. This series replaces the industry standard OP-177 and offers improved noise performance, wider output voltage swing, and twice the speed with half the quiescent current. The OPA277UAE4 is known for its ultra-low offset voltage and drift, low bias current, high common-mode rejection, and high power supply rejection. It operates from a wide supply range of ±2 V to ±18 V, making it versatile for various applications.
Key Specifications
| Parameter | Unit | Minimum | Typical | Maximum |
|---|---|---|---|---|
| Input Offset Voltage (VOS) | µV | ±10 | ±20 | ±20 |
| Input Offset Voltage Drift (dVOS/dT) | µV/°C | ±0.1 | ±0.15 | ±0.15 |
| Open-Loop Gain | dB | - | 134 | - |
| Common-Mode Rejection Ratio (CMRR) | dB | - | 140 | - |
| Power Supply Rejection Ratio (PSRR) | dB | - | 130 | - |
| Input Bias Current (IB) | nA | - | 1 | 1 |
| Quiescent Current per Amplifier | µA | - | 800 | - |
| Supply Voltage Range | V | ±2 | - | ±18 |
| Operating Temperature Range | °C | -40 | - | 85 |
| Package Type | - | - | SOIC (8) | - |
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
- External trim pins for special applications (single version)
- Unity-gain stable and excellent dynamic behavior over a wide range of load conditions
- Completely independent circuitry in dual and quad versions for lowest crosstalk and freedom from interaction
Applications
- Transducer amplifiers
- Bridge amplifiers
- Temperature measurements
- Strain gage amplifiers
- Precision integrators
- Battery-powered instruments
- Test equipment
- 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 OPA277UAE4?
The input offset voltage is ±10 µV (minimum), ±20 µV (typical), and ±20 µV (maximum).
- What is the input offset voltage drift of the OPA277UAE4?
The input offset voltage drift is ±0.1 µV/°C (minimum), ±0.15 µV/°C (typical), and ±0.15 µV/°C (maximum).
- What is the open-loop gain of the OPA277UAE4?
The open-loop gain is 134 dB.
- What is the common-mode rejection ratio (CMRR) of the OPA277UAE4?
The CMRR is 140 dB.
- What is the power supply rejection ratio (PSRR) of the OPA277UAE4?
The PSRR is 130 dB.
- What is the input bias current of the OPA277UAE4?
The input bias current is 1 nA (maximum).
- What is the quiescent current per amplifier of the OPA277UAE4?
The quiescent current per amplifier is 800 µA.
- What is the supply voltage range of the OPA277UAE4?
The supply voltage range is ±2 V to ±18 V.
- What are the operating temperature ranges for the OPA277UAE4?
The operating temperature range is -40°C to 85°C.
- What package types are available for the OPA277UAE4?
The OPA277UAE4 is available in an SOIC (8) package.
- What are some common applications of the OPA277UAE4?
Common applications include transducer amplifiers, bridge amplifiers, temperature measurements, strain gage amplifiers, precision integrators, battery-powered instruments, test equipment, and more).
