Overview
The OPA2277AIDRMT is a high-precision, low-noise operational amplifier produced by Texas Instruments. It is part of the OPAx277 series, which replaces industry standards such as the OP-177. This operational amplifier is known for its excellent performance across a wide range of supply voltages and its stability in unity gain configurations. It offers improved noise characteristics, a wider output voltage swing, and is twice as fast as its predecessors with half the quiescent current.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Output Voltage Range | (V–) + 0.5 | (V+) – 1.2 | (V–) + 1.5 / (V+) – 1.5 | V |
| Short-circuit Current | - | - | ±35 | mA |
| Supply Voltage Range | ±2 | - | ±18 | V |
| Quiescent Current per Amplifier | - | 790 | 900 | µA |
| Operating Temperature Range | -55 | - | 125 | °C |
| Offset Voltage | - | 10 | 20 | µV |
| Offset Drift | - | 0.1 | - | µV/°C |
| Bias Current | - | - | 1 | nA |
| Common-Mode Rejection Ratio | - | - | 140 | dB |
| Power Supply Rejection Ratio | - | - | 130 | dB |
Key Features
- Ultra-low offset voltage: 10 µV and ultra-low drift: ±0.1 µV/°C.
- High open-loop gain: 134 dB, high common-mode rejection: 140 dB, and 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.
- Unity-gain stable and provides excellent dynamic behavior over a wide range of load conditions.
- Completely independent circuitry for lowest crosstalk and freedom from interaction, even when overdriven or overloaded.
- Available in single, dual, and quad versions.
- Replaces OP-07, OP-77, and OP-177.
Applications
The OPA2277AIDRMT is suitable for a variety of high-precision applications, including:
- Defense and aerospace systems due to its controlled baseline, single assembly and test site, and single fabrication site.
- Medical applications requiring high precision and low noise.
- High-precision measurement and instrumentation.
- Audio and video equipment where low noise and high fidelity are critical.
Q & A
- What is the operating temperature range of the OPA2277AIDRMT?
The operating temperature range is from -55°C to 125°C.
- What is the typical quiescent current per amplifier for the OPA2277AIDRMT?
The typical quiescent current per amplifier is 790 µA.
- What is the maximum bias current of the OPA2277AIDRMT?
The maximum bias current is 1 nA.
- What is the common-mode rejection ratio (CMRR) of the OPA2277AIDRMT?
The CMRR is 140 dB.
- Is the OPA2277AIDRMT unity-gain stable?
Yes, the OPA2277AIDRMT is unity-gain stable.
- What are the typical offset voltage and drift for the OPA2277AIDRMT?
The typical offset voltage is 10 µV, and the typical offset drift is ±0.1 µV/°C.
- What is the power supply rejection ratio (PSRR) of the OPA2277AIDRMT?
The PSRR is 130 dB.
- What are the available package types for the OPA2277AIDRMT?
The OPA2277AIDRMT is available in various packages, including SOIC, DIP, and SON.
- Does the OPA2277AIDRMT replace any industry-standard operational amplifiers?
Yes, it replaces the OP-07, OP-77, and OP-177.
- What are some common applications for the OPA2277AIDRMT?
Common applications include defense, aerospace, medical, high-precision measurement, and audio/video equipment.
