Overview
The LMP7709MT/NOPB is a precision, CMOS input, rail-to-rail input and output (RRIO) decompensated amplifier produced by Texas Instruments. It is part of the LMP™ precision amplifier family and is designed for high accuracy and stability in various applications. This quad amplifier is ideal for sensor interface and other instrumentation applications due to its low offset voltage, low input bias current, and wide supply voltage range.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Input Offset Voltage | - | ±37 | ±220 | ±520 | μV |
| Input Bias Current | -40°C ≤ TA ≤ 125°C | ±0.2 | ±1 | ±400 | pA |
| Input Voltage Noise | f = 1 kHz | - | 9 | - | nV/√Hz |
| Common Mode Rejection Ratio (CMRR) | 0V ≤ VCM ≤ 3V | 86 | 130 | - | dB |
| Open Loop Gain | RL = 2 kΩ | 100 | 114 | - | dB |
| Gain Bandwidth Product (GBWP) | AV = 10 | - | 14 | - | MHz |
| Supply Current | - | 2.1 | 2.9 | 3.5 | mA |
| Supply Voltage Range | - | 2.7 | - | 12 | V |
| Temperature Range | - | -40 | - | 125 | °C |
Key Features
- Low Offset Voltage: Ensured low offset voltage of less than ±220 µV, making it ideal for precision applications.
- Low Input Bias Current: Low input bias current of less than ±1 pA.
- Rail-to-Rail Input and Output: The amplifier has rail-to-rail input and output capability, maximizing signal dynamic range.
- Wide Supply Voltage Range: Operates over a supply voltage range of 2.7V to 12V.
- High CMRR and PSRR: High common mode rejection ratio (CMRR) and power supply rejection ratio (PSRR) ensure stability against common-mode and power supply noise.
- Stable at High Gains: Stable at a gain of 10 or higher.
- Small Package Options: Available in 14-pin TSSOP and 14-pin SOIC packages, ideal for space-saving designs.
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: Used in applications requiring high gain amplification.
- DAC Buffer: Can be used as a buffer for digital-to-analog converters (DACs).
- Instrumentation Amplifier: Suitable for use in instrumentation amplifiers where precision and stability are critical.
- Active Filters: Can be used in active filter circuits due to its stability and low noise characteristics.
Q & A
- What is the input offset voltage of the LMP7709MT/NOPB?
The input offset voltage is typically ±220 µV, with a maximum of ±520 µV.
- What is the input bias current of the LMP7709MT/NOPB?
The input bias current is typically ±1 pA, with a maximum of ±400 pA over the operating temperature range.
- What is the common mode rejection ratio (CMRR) of the LMP7709MT/NOPB?
The CMRR is typically 130 dB.
- What is the gain bandwidth product (GBWP) of the LMP7709MT/NOPB?
The GBWP is typically 14 MHz at a gain of 10.
- What is the supply voltage range of the LMP7709MT/NOPB?
The supply voltage range is from 2.7V to 12V.
- What are the package options for the LMP7709MT/NOPB?
It is available in 14-pin TSSOP and 14-pin SOIC packages.
- What are some typical applications of the LMP7709MT/NOPB?
It is used in high impedance sensor interfaces, battery-powered instrumentation, high gain amplifiers, DAC buffers, instrumentation amplifiers, and active filters.
- What is the temperature range of the LMP7709MT/NOPB?
The operating temperature range is from -40°C to 125°C.
- Is the LMP7709MT/NOPB stable at high gains?
Yes, it is stable at a gain of 10 or higher.
- What is the slew rate of the LMP7709MT/NOPB?
The slew rate is typically 5.1 V/μs.
