Overview
The LMP7701MF from Texas Instruments is a precision, single-channel operational amplifier (op-amp) that features a CMOS input stage and a wide supply voltage range. It is part of the LMP™ precision amplifier family and is ideal for sensor interface and other instrumentation applications. The LMP7701 is known for its low offset voltage, low input bias current, and rail-to-rail input and output capabilities, making it suitable for precision applications where high accuracy and low noise are critical.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Offset Voltage | ±200 µV (Maximum) | µV |
| Input Bias Current | ±200 fA | fA |
| Input Voltage Noise | 9 nV/√Hz | nV/√Hz |
| Common-Mode Rejection Ratio (CMRR) | 130 dB | dB |
| Open-Loop Gain | 130 dB | dB |
| Temperature Range | –40°C to 125°C | °C |
| Unity-Gain Bandwidth | 2.5 MHz | MHz |
| Supply Current | 715 µA | µA |
| Supply Voltage Range | 2.7 V to 12 V | V |
| Package Type | SOT-23 (5 pins) | |
| Dimensions | 1.60 mm × 2.90 mm × 1.02 mm | mm |
Key Features
- Low Offset Voltage: ±200 µV maximum, making it ideal for precision applications.
- Low Input Bias Current: ±200 fA, which is beneficial for high impedance sensor interfaces.
- Low Input Voltage Noise: 9 nV/√Hz, contributing to its high signal-to-noise ratio.
- Rail-to-Rail Input and Output: Allows the input and output to swing within 40 mV of either rail, maximizing signal dynamic range.
- Wide Supply Voltage Range: Operates from 2.7 V to 12 V, making it versatile for various applications.
- High CMRR: 130 dB, ensuring good common-mode rejection.
- Compact Packaging: Available in a space-saving 5-pin SOT-23 package.
Applications
- High Impedance Sensor Interface: Ideal for interfacing with high impedance sensors due to its low input bias current.
- Battery-Powered Instrumentation: Suitable for battery-powered devices due to its low supply current.
- High Gain Amplifiers: Can be used in high gain amplifier configurations.
- DAC Buffer: Can serve as a buffer for digital-to-analog converters (DACs).
- Instrumentation Amplifier: Used in instrumentation amplifier circuits for precise signal amplification.
- Active Filters: Can be used in active filter designs to filter signals accurately.
Q & A
- What is the input offset voltage of the LMP7701MF?
The input offset voltage of the LMP7701MF is ±200 µV (maximum).
- What is the input bias current of the LMP7701MF?
The input bias current is ±200 fA.
- What is the typical input voltage noise density of the LMP7701MF?
The typical input voltage noise density is 9 nV/√Hz.
- What is the common-mode rejection ratio (CMRR) of the LMP7701MF?
The CMRR is 130 dB.
- What is the operating temperature range of the LMP7701MF?
The operating temperature range is –40°C to 125°C.
- What is the unity-gain bandwidth of the LMP7701MF?
The unity-gain bandwidth is 2.5 MHz.
- What is the supply current of the LMP7701MF?
The supply current is 715 µA.
- What is the supply voltage range of the LMP7701MF?
The supply voltage range is 2.7 V to 12 V.
- In what package is the LMP7701MF available?
The LMP7701MF is available in a 5-pin SOT-23 package.
- What are some common applications of the LMP7701MF?
Common applications include high impedance sensor interfaces, battery-powered instrumentation, high gain amplifiers, DAC buffers, instrumentation amplifiers, and active filters.
