Overview
The Texas Instruments OPA37GU is an ultra-low noise, high-precision monolithic operational amplifier. It is designed to offer exceptional performance in various precision applications. The OPA37GU features laser-trimmed thin-film resistors, which provide excellent long-term voltage offset stability and superior voltage offset compared to common zener-zap techniques. This amplifier is a decompensated version, requiring a closed-loop gain of 5 for stability, and it serves as an improved replacement for industry-standard OP-27 and OP-37 amplifiers.
Key Specifications
| Specification | Value |
|---|---|
| Package | SOIC (D) with 8 pins |
| Operating Temperature Range (°C) | -40 to 85 |
| Noise (nV/√Hz at 1kHz) | 4.5 nV/√Hz max |
| Voltage Offset (µV) | 100 µV max |
| Drift (µV/°C) | 0.4 µV/°C |
| Open-Loop Gain (dB) | 117 dB min |
| Common-Mode Rejection (dB) | 100 dB min |
| Power-Supply Rejection (dB) | 94 dB min |
Key Features
- Ultra-low noise: 4.5 nV/√Hz max at 1 kHz
- Low offset: 100 µV max
- Low drift: 0.4 µV/°C
- High open-loop gain: 117 dB min
- High common-mode rejection: 100 dB min
- High power-supply rejection: 94 dB min
- Fits OP-07, OP-05, AD510, and AD517 sockets
Applications
- Precision instrumentation
- Data acquisition
- Test equipment
- Professional audio equipment
- Transducer amplifiers
- Radiation hard equipment
Q & A
- What is the noise level of the OPA37GU at 1 kHz? The noise level is 4.5 nV/√Hz max at 1 kHz.
- What is the maximum voltage offset of the OPA37GU? The maximum voltage offset is 100 µV.
- What is the drift specification of the OPA37GU? The drift is 0.4 µV/°C.
- What is the minimum open-loop gain of the OPA37GU? The minimum open-loop gain is 117 dB.
- What is the common-mode rejection ratio of the OPA37GU? The common-mode rejection ratio is 100 dB min.
- What is the power-supply rejection ratio of the OPA37GU? The power-supply rejection ratio is 94 dB min.
- Does the OPA37GU require external compensation? Yes, the OPA37GU is decompensated and requires a closed-loop gain of 5 for stability.
- What are the compatible sockets for the OPA37GU? The OPA37GU fits OP-07, OP-05, AD510, and AD517 sockets.
- What is the operating temperature range of the OPA37GU? The operating temperature range is -40°C to 85°C.
- What are some typical applications of the OPA37GU? Typical applications include precision instrumentation, data acquisition, test equipment, professional audio equipment, transducer amplifiers, and radiation hard equipment.
