Overview
The OPA2277UA is a high-precision, low-power operational amplifier produced by Texas Instruments. It is part of the OPAx277 series, which replaces industry-standard op-amps like the OP-177. These devices are known for their ultra-low offset voltage and drift, high open-loop gain, and excellent common-mode and power-supply rejection ratios. The OPA2277UA operates over a wide supply range from ±2 V to ±18 V, making it versatile for various applications. It is available in single, dual, and quad versions, each featuring independent circuitry to minimize crosstalk and interaction between channels.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOIC (D) | - |
| Pins | 8 | - |
| Operating Temperature Range | -40 to 85 | °C |
| Input Offset Voltage | ±10 to ±25 | µV |
| Input Offset Voltage Drift | ±0.1 to ±0.25 | µV/°C |
| Open-Loop Gain | 134 | dB |
| Common-Mode Rejection Ratio | 140 | dB |
| Power-Supply Rejection Ratio | 130 | dB |
| Input Bias Current | ±0.5 to ±1 | nA |
| Supply Voltage Range | ±2 V to ±18 V | - |
| Quiescent Current per Amplifier | 800 | µA |
| Bandwidth | 1 | MHz |
| Slew Rate | 0.8 | V/µs |
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 ratio: 140 dB
- High power-supply rejection ratio: 130 dB
- Low bias current: 1-nA maximum
- Wide supply range: ±2 V to ±18 V
- Low quiescent current: 800 µA per amplifier
- Single, dual, and quad versions available: Offering flexibility in design
- Replaces OP-07, OP-77, and OP-177: Compatible with existing designs
Applications
- Analog input modules: For precise signal conditioning
- Weigh scales: High accuracy required for weight measurements
- Temperature transmitters: For precise temperature monitoring
- Pressure transmitters: For accurate pressure measurements
- Data acquisition (DAQ): For high-precision data collection
- Lab and field instrumentation: Where high accuracy and stability are crucial
- Battery test equipment: For precise battery performance analysis
Q & A
- What is the input offset voltage of the OPA2277UA?
The input offset voltage of the OPA2277UA is ±10 to ±25 µV.
- What is the operating temperature range of the OPA2277UA?
The operating temperature range is -40°C to 85°C.
- What is the supply voltage range for the OPA2277UA?
The supply voltage range is ±2 V to ±18 V.
- What is the quiescent current per amplifier for the OPA2277UA?
The quiescent current per amplifier is 800 µA.
- Does the OPA2277UA have dual and quad versions?
- What are some common applications of the OPA2277UA?
- What is the bandwidth of the OPA2277UA?
- What is the slew rate of the OPA2277UA?
- Is the OPA2277UA RoHS compliant?
- Where can I find additional datasheets and technical specifications for the OPA2277UA?
