Overview
The LMP7701MFX/NOPB is a precision, CMOS input, rail-to-rail input and output (RRIO) operational amplifier produced by Texas Instruments. It is part of the LMP™ precision amplifier family and is designed for applications requiring high precision and low noise. The LMP7701 features a CMOS input stage and a wide supply voltage range, making it ideal for sensor interface and other instrumentation applications. The device is built using VIP50 technology, which allows it to operate with a 12-V common-mode and supply voltage range, making it suitable for applications where conventional CMOS parts cannot operate under the desired voltage conditions.
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 |
| CMRR (Common-Mode Rejection Ratio) | 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 | 5-Pin SOT-23 (DBV) |
Key Features
- Low Offset Voltage: Less than ±200 µV, making it ideal for precision applications.
- Low Input Bias Current: Less than ±200 fA, which is beneficial for high impedance sensor interfaces.
- Wide Supply Voltage Range: Operates from 2.7 V to 12 V, allowing use in a variety of applications.
- Rail-to-Rail Input and Output: The output swings within 40 mV of either rail, maximizing signal dynamic range.
- High CMRR: 130 dB, reducing the CMRR glitch commonly associated with rail-to-rail input amplifiers.
- Space-Saving Packages: Available in 5-Pin SOT-23 and 8-Pin SOIC packages, ideal for area-constrained PC boards and portable electronics.
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 be used as a buffer for digital-to-analog converters.
- Instrumentation Amplifier: Suitable for use in instrumentation amplifier circuits.
- Active Filters: Can be used in active filter designs.
Q & A
- What is the input offset voltage of the LMP7701?
The input offset voltage of the LMP7701 is ±200 µV (Maximum).
- What is the input bias current of the LMP7701?
The input bias current of the LMP7701 is ±200 fA.
- What is the common-mode rejection ratio (CMRR) of the LMP7701?
The CMRR of the LMP7701 is 130 dB.
- What is the supply voltage range of the LMP7701?
The supply voltage range of the LMP7701 is from 2.7 V to 12 V.
- What are the available packages for the LMP7701?
The LMP7701 is available in 5-Pin SOT-23 and 8-Pin SOIC packages.
- What is the typical supply current of the LMP7701?
The typical supply current of the LMP7701 is 715 µA.
- What is the unity-gain bandwidth of the LMP7701?
The unity-gain bandwidth of the LMP7701 is 2.5 MHz.
- What is the temperature range of the LMP7701?
The temperature range of the LMP7701 is from –40°C to 125°C.
- What are some typical applications of the LMP7701?
The LMP7701 is typically used in high impedance sensor interfaces, battery-powered instrumentation, high gain amplifiers, DAC buffers, instrumentation amplifiers, and active filters.
- What technology is used in the LMP7701?
The LMP7701 is built using VIP50 technology, which allows the combination of a CMOS input stage and a 12-V common-mode and supply voltage range.
