Overview
The OPA207IDR is a low-power, high-precision, low-noise, rail-to-rail output operational amplifier produced by Texas Instruments. It replaces industry standard operational amplifiers such as the OP-07, OP-77, and OP-177, offering improved performance in terms of noise, output voltage swing, and bandwidth while consuming half the quiescent current of its predecessors. The OPA207 is designed for a wide range of applications requiring high precision and low power consumption.
Key Specifications
| Parameter | Typical Value | Maximum Value |
|---|---|---|
| Input Offset Voltage | 150 μV | 225 μV (TA = –40°C to 125°C) |
| Input Offset Voltage Drift | ±1 μV/°C | ±1.1 μV/°C (TA = –40°C to 125°C) |
| Gain Bandwidth | 1 MHz | - |
| Slew Rate | 3.6 V/μs | - |
| Open-Loop Gain | 130 dB | 126 dB (RL = 2 kΩ, TA = –40°C to 125°C) |
| Common-Mode Rejection Ratio | 115 dB | - |
| Power-Supply Rejection Ratio | 5 μV/V | 5 μV/V (VS = ±2.25 V to ±18 V) |
| Input Bias Current | 2.8 nA | 7 nA |
| Supply Voltage Range | ±2.25 V to ±18 V | - |
| Quiescent Current | 375 μA | 450 μA (TA = –40°C to 125°C) |
Key Features
- Ultra-low offset voltage and drift: The OPA207 features an ultra-low input offset voltage of 150 μV and a drift of ±1 μV/°C, ensuring high precision in various applications.
- Low noise: The amplifier has low noise characteristics, making it suitable for applications requiring high signal integrity.
- High common-mode rejection and power-supply rejection ratios: With a common-mode rejection ratio of 115 dB and a power-supply rejection ratio of 5 μV/V, the OPA207 provides excellent immunity to common-mode and power-supply noise.
- Rail-to-rail output: The OPA207 can swing its output within a few millivolts from either power supply rail, maintaining high open-loop gain.
- Low input bias current: The use of super-beta bipolar transistors and input bias current cancellation techniques results in very low input bias currents.
- Wide supply range and low quiescent current: The amplifier operates from ±2.25 V to ±18 V supplies with a low quiescent current of 375 μA, making it energy-efficient.
Applications
- Analog input modules: The OPA207 is suitable for analog input modules due to its high precision and low noise characteristics.
- Battery test and data acquisition (DAQ): Its low power consumption and high accuracy make it ideal for battery testing and data acquisition systems.
- Pressure and temperature transmitters: The amplifier's high precision and stability over a wide temperature range make it suitable for use in pressure and temperature transmitters.
Q & A
- What is the typical input offset voltage of the OPA207?
The typical input offset voltage of the OPA207 is 150 μV.
- What is the gain bandwidth of the OPA207?
The gain bandwidth of the OPA207 is 1 MHz).
- What is the slew rate of the OPA207?
The slew rate of the OPA207 is 3.6 V/μs).
- What is the common-mode rejection ratio of the OPA207?
The common-mode rejection ratio of the OPA207 is 115 dB).
- What is the power-supply rejection ratio of the OPA207?
The power-supply rejection ratio of the OPA207 is 5 μV/V).
- What is the input bias current of the OPA207?
The input bias current of the OPA207 is typically 2.8 nA, with a maximum of 7 nA).
- What is the supply voltage range of the OPA207?
The OPA207 operates from ±2.25 V to ±18 V supplies).
- What is the quiescent current of the OPA207?
The quiescent current of the OPA207 is 375 μA, with a maximum of 450 μA over the full temperature range).
- Is the OPA207 stable in unity gain configurations?
Yes, the OPA207 is stable in unity gain configurations and is free from phase inversion and overload problems).
- What are some common applications of the OPA207?
The OPA207 is commonly used in analog input modules, battery testing, data acquisition systems, and pressure and temperature transmitters).
