Overview
The OPA2277AIDRMR is a high-precision operational amplifier from Texas Instruments, part of the OPAx277 series. These devices are designed to replace the industry standard OP-177, offering improved noise performance, a wider output voltage swing, and twice the speed with half the quiescent current. The OPA2277AIDRMR 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 | Typical Value | Minimum Value | Maximum Value | Unit |
|---|---|---|---|---|
| Input Offset Voltage (VOS) | 10 µV | ±10 µV | ±25 µV | µV |
| Input Offset Voltage Drift (dVOS/dT) | ±0.1 µV/°C | ±0.1 µV/°C | ±0.25 µV/°C | µV/°C |
| Open-Loop Gain (AOL) | 134 dB | - | - | dB |
| Common-Mode Rejection Ratio (CMRR) | 140 dB | 130 dB | 140 dB | dB |
| Power-Supply Rejection Ratio (PSRR) | 130 dB | 115 dB | 130 dB | dB |
| Input Bias Current (IB) | 1 nA | ±0.5 nA | ±2 nA | nA |
| Quiescent Current (IQ) | 800 µA/amplifier | 790 µA/amplifier | 900 µA/amplifier | µA/amplifier |
| Operating Temperature Range | -55°C to 125°C | -55°C | 125°C | °C |
| Supply Voltage Range | ±2 V to ±18 V | ±2 V | ±18 V | V |
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
- Unity-gain stable and free from phase inversion and overload problems
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 typical input offset voltage of the OPA2277AIDRMR?
The typical input offset voltage is 10 µV.
- What is the input offset voltage drift of the OPA2277AIDRMR?
The input offset voltage drift is ±0.1 µV/°C.
- What is the open-loop gain of the OPA2277AIDRMR?
The open-loop gain is 134 dB.
- What is the common-mode rejection ratio (CMRR) of the OPA2277AIDRMR?
The CMRR is 140 dB.
- What is the power-supply rejection ratio (PSRR) of the OPA2277AIDRMR?
The PSRR is 130 dB.
- What is the input bias current of the OPA2277AIDRMR?
The input bias current is 1 nA maximum.
- What is the quiescent current per amplifier of the OPA2277AIDRMR?
The quiescent current per amplifier is 800 µA.
- What is the operating temperature range of the OPA2277AIDRMR?
The operating temperature range is -55°C to 125°C.
- What is the supply voltage range of the OPA2277AIDRMR?
The supply voltage range is ±2 V to ±18 V.
- In what types of applications is the OPA2277AIDRMR commonly used?
The OPA2277AIDRMR is commonly used in analog input modules, weigh scales, temperature transmitters, pressure transmitters, data acquisition systems, lab and field instrumentation, and battery testing.
