Overview
The LMP7701MF/NOPB, produced by Texas Instruments, is a precision, CMOS input, rail-to-rail input and output (RRIO) operational amplifier. It is part of the LMP™ precision amplifier family and is designed for high-precision applications such as sensor interfaces and instrumentation. The LMP7701 features a low input bias current of ±200 fA and low input referred voltage noise of 9 nV/√Hz, making it ideal for applications requiring high accuracy and low noise.
Key Specifications
| Parameter | Typical Value | Minimum Value | Maximum Value | Unit |
|---|---|---|---|---|
| Input Offset Voltage | ±200 µV | ±37 µV | ±500 µV | µV |
| Input Bias Current | ±200 fA | ±0.2 pA | ±1 pA | pA |
| Input Referred Voltage Noise | 9 nV/√Hz | - | - | nV/√Hz |
| Common-Mode Rejection Ratio (CMRR) | 130 dB | 90 dB | 138 dB | dB |
| Open-Loop Gain | 130 dB | - | - | dB |
| Unity-Gain Bandwidth | 2.5 MHz | - | - | MHz |
| Supply Voltage Range | 2.7 V to 12 V | 2.7 V | 12 V | V |
| Supply Current | 715 µA | - | - | µA |
| Temperature Range | -40°C to 125°C | -40°C | 125°C | °C |
| Output Voltage Swing Low | 40 mV from V- | 20 mV | 50 mV | mV |
| Output Voltage Swing High | 40 mV from V+ | 20 mV | 50 mV | mV |
Key Features
- Low Input Bias Current: ±200 fA, ideal for high-impedance sensor interfaces.
- Low Input Referred Voltage Noise: 9 nV/√Hz, suitable for low-noise applications.
- Rail-to-Rail Input and Output: Allows the 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 power supply conditions.
- High CMRR: 130 dB, ensuring good common-mode rejection.
- Low Temperature Drift: Input offset voltage temperature drift of ±1 µV/°C.
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 power consumption.
- High Gain Amplifiers: Can be used in high-gain amplifier configurations.
- DAC Buffer: Can serve as a buffer for digital-to-analog converters.
- Instrumentation Amplifier: Can be used in instrumentation amplifier circuits.
- Active Filters: Suitable for active filter designs.
Q & A
- What is the input bias current of the LMP7701? The input bias current is ±200 fA.
- What is the input referred voltage noise of the LMP7701? The input referred voltage noise is 9 nV/√Hz.
- What is the common-mode rejection ratio (CMRR) of the LMP7701? The CMRR is 130 dB.
- What is the supply voltage range of the LMP7701? The supply voltage range is from 2.7 V to 12 V.
- What is the temperature range of the LMP7701? The temperature range is from -40°C to 125°C.
- What are the typical applications of the LMP7701? Typical applications include high impedance sensor interfaces, battery-powered instrumentation, high gain amplifiers, DAC buffers, instrumentation amplifiers, and active filters.
- What is the unity-gain bandwidth of the LMP7701? The unity-gain bandwidth is 2.5 MHz.
- How does the LMP7701 handle rail-to-rail input and output? The LMP7701 features rail-to-rail input and output, allowing the output to swing within 40 mV of either rail.
- What is the typical supply current of the LMP7701? The typical supply current is 715 µA.
- What are the package options for the LMP7701? The LMP7701 is available in 5-Pin SOT-23 and 8-Pin SOIC packages.
