Overview
The OPA627AU/2K5 is a precision, high-speed operational amplifier produced by Texas Instruments. It is part of the OPA6x7 series, which includes the OPA627 and OPA637 models. These operational amplifiers are designed to provide high performance in precision analog circuitry, offering low noise, fast settling times, and low offset voltage. The OPA627AU/2K5 is particularly suited for applications requiring high accuracy and speed, such as precision instrumentation, fast data acquisition, and high-performance audio circuitry.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Input Offset Voltage (VOS) | ±25 | ±100 | ±500 | µV | |
| Input Offset Voltage Drift (dVOS/dT) | TA = –25°C to +85°C | ±0.3 | ±0.8 | ±2.5 | µV/°C |
| Power Supply Rejection Ratio (PSRR) | VS = ±4.5V to ±18V | 100 | 116 | 120 | dB |
| Input Bias Current (IB) | VCM = 0V | ±1 | ±5 | ±10 | pA |
| Slew Rate | 10V step, gain = –1V/V | 40 | 55 | V/µs | |
| Settling Time | 10V step, gain = –1V/V, CL = 30pF to 0.01% | 550 | ns | ||
| Gain-Bandwidth Product | Gain = 1V/V, CL = 30pF | 45 | MHz | ||
| Operating Supply Voltage | ±4.5V | ±18V | V | ||
| Output Current per Channel | ±30 | mA | |||
| Package | 8-SOIC (0.154, 3.90mm Width) | ||||
| Operating Temperature Range | –25°C | +85°C | °C |
Key Features
- Very Low Noise: 4.5nV/√Hz at 10kHz, making it suitable for high-precision applications.
- Fast Settling Time: 550ns to 0.01% for the OPA627, ensuring rapid response times in dynamic environments.
- Low Offset Voltage: Maximum of 100µV, contributing to high accuracy in output signals.
- Low Drift: Maximum of 0.8µV/°C, ensuring stable performance over a wide temperature range.
- Low Input Bias Current: Maximum of 5pA, which is crucial for maintaining high input impedance and minimizing input current errors.
- Gain Options: The OPA627 is unity-gain stable, while the OPA637 is stable in gains equal to or greater than five.
- Wide Power Supply Range: Operates over a range of ±4.5V to ±18V, providing flexibility in power supply configurations.
- High Frequency Performance: Utilizes high-frequency complementary transistors to achieve increased circuit bandwidth.
Applications
- Precision Instrumentation: Ideal for applications requiring high accuracy and low noise, such as precision measurement instruments and test equipment.
- Fast Data Acquisition: Suitable for high-speed data acquisition systems due to its fast settling time and high bandwidth.
- DAC Output Amplifier: Used in digital-to-analog converter output stages to enhance signal quality and accuracy.
- Optoelectronics: Applicable in optoelectronic circuits where high precision and low noise are critical.
- Sonar and Ultrasound: Employed in sonar and ultrasound systems that require high-speed and high-precision signal processing.
- High-Impedance Sensor Amplifiers: Suitable for amplifying signals from high-impedance sensors due to its low input bias current.
- High-Performance Audio Circuitry: Used in high-end audio equipment to ensure high fidelity and low noise.
- Active Filters: Utilized in active filter circuits where precision and high bandwidth are essential.
Q & A
- What is the input offset voltage of the OPA627AU/2K5?
The input offset voltage of the OPA627AU/2K5 is typically ±100µV, with a maximum of ±500µV.
- What is the settling time of the OPA627AU/2K5?
The settling time of the OPA627AU/2K5 is 550ns to 0.01% for a 10V step input.
- What is the power supply rejection ratio (PSRR) of the OPA627AU/2K5?
The PSRR of the OPA627AU/2K5 is typically 116dB over a supply voltage range of ±4.5V to ±18V.
- What is the input bias current of the OPA627AU/2K5?
The input bias current of the OPA627AU/2K5 is typically ±5pA.
- What are the gain options for the OPA627 and OPA637?
The OPA627 is unity-gain stable, while the OPA637 is stable in gains equal to or greater than five.
- What is the operating temperature range of the OPA627AU/2K5?
The operating temperature range of the OPA627AU/2K5 is –25°C to +85°C.
- What is the package type of the OPA627AU/2K5?
The OPA627AU/2K5 is available in an 8-SOIC (0.154, 3.90mm Width) package.
- What are some typical applications of the OPA627AU/2K5?
Typical applications include precision instrumentation, fast data acquisition, DAC output amplifiers, optoelectronics, sonar and ultrasound, high-impedance sensor amplifiers, high-performance audio circuitry, and active filters.
- What is the slew rate of the OPA627AU/2K5?
The slew rate of the OPA627AU/2K5 is typically 55V/µs for a 10V step input.
- What is the gain-bandwidth product of the OPA627AU/2K5?
The gain-bandwidth product of the OPA627AU/2K5 is typically 45MHz for a gain of 1V/V.
