Overview
The OPA27GUE4 is an ultra-low noise, precision operational amplifier produced by Texas Instruments. It is part of the OPA27 series, known for its high accuracy and low parametric drift over time and temperature. This amplifier is internally compensated for unity-gain stability, making it suitable for a wide range of applications requiring high precision and low noise.
The OPA27GUE4 features laser-trimmed thin-film resistors, which provide excellent long-term voltage offset stability and superior voltage offset compared to common zener-zap techniques. It also includes a unique bias current cancellation circuit to ensure that bias and offset current specifications are met over the full operating temperature range of -40°C to +85°C.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Manufacturer | Texas Instruments | |
| Package Type | SOIC-8 | |
| Mounting Type | Surface Mount | |
| Power Supply Type | Dual | |
| Number of Channels per Chip | 1 | |
| Pin Count | 8 | |
| Typical Gain Bandwidth Product | 8 MHz | |
| Typical Dual Supply Voltage | ±15 V | |
| Typical Slew Rate | 1.9 V/µs | |
| Maximum Operating Temperature | +85 °C | |
| Minimum Operating Temperature | -40 °C | |
| Typical Voltage Gain | 124 dB | |
| Typical Input Voltage Noise Density | 4.5 nV/√Hz (max at 1 kHz) | |
| Input Offset Voltage | 100 µV (max) | |
| Input Offset Voltage Drift | 0.4 µV/°C | |
| Dimensions | 4.9 x 3.91 x 1.58 mm |
Key Features
- Ultra-Low Noise: The OPA27GUE4 has a typical input voltage noise density of 4.5 nV/√Hz at 1 kHz, making it ideal for applications requiring low noise levels.
- High Precision: It features laser-trimmed thin-film resistors for excellent long-term voltage offset stability and low drift over temperature.
- High Open-Loop Gain: With a minimum open-loop voltage gain of 117 dB, this amplifier ensures high accuracy in signal amplification.
- High Common-Mode Rejection and Power-Supply Rejection: It offers high common-mode rejection (100 dB min) and power-supply rejection (94 dB min) to minimize external noise and voltage variations.
- Wide Operating Temperature Range: The amplifier operates over a temperature range of -40°C to +85°C, making it suitable for various environmental conditions.
Applications
- Precision Instrumentation: Ideal for high-accuracy instrumentation due to its low noise and high precision characteristics.
- Data Acquisition: Suitable for data acquisition systems where low noise and high accuracy are critical.
- Test Equipment: Used in test equipment for its high precision and low noise performance.
- Professional Audio Equipment: Applicable in professional audio equipment where low noise is essential.
- Transducer Amplifiers: Often used in transducer and strain gauge amplifiers due to its high accuracy and low drift.
- Radiation Hard Equipment: Suitable for radiation-hard applications due to its robust design and performance.
Q & A
- What is the typical input voltage noise density of the OPA27GUE4?
The typical input voltage noise density of the OPA27GUE4 is 4.5 nV/√Hz at 1 kHz.
- What is the operating temperature range of the OPA27GUE4?
The OPA27GUE4 operates over a temperature range of -40°C to +85°C.
- What is the typical gain bandwidth product of the OPA27GUE4?
The typical gain bandwidth product of the OPA27GUE4 is 8 MHz.
- What is the maximum input offset voltage of the OPA27GUE4?
The maximum input offset voltage of the OPA27GUE4 is 100 µV.
- What is the typical slew rate of the OPA27GUE4?
The typical slew rate of the OPA27GUE4 is 1.9 V/µs.
- Is the OPA27GUE4 internally compensated for unity-gain stability?
Yes, the OPA27GUE4 is internally compensated for unity-gain stability.
- What are some common applications of the OPA27GUE4?
The OPA27GUE4 is commonly used in precision instrumentation, data acquisition, test equipment, professional audio equipment, transducer amplifiers, and radiation-hard equipment.
- What is the package type of the OPA27GUE4?
The package type of the OPA27GUE4 is SOIC-8.
- What is the typical dual supply voltage for the OPA27GUE4?
The typical dual supply voltage for the OPA27GUE4 is ±15 V.
- Does the OPA27GUE4 have high common-mode rejection and power-supply rejection?
Yes, the OPA27GUE4 has high common-mode rejection (100 dB min) and power-supply rejection (94 dB min).
