Overview
The LMP2022MAX/NOPB is a dual precision operational amplifier produced by Texas Instruments. It is part of the LMP™ precision family, known for its ultra-low input offset voltage, near-zero input offset voltage drift, and very low input voltage noise. These attributes make it ideal for high-accuracy applications such as instrumentation and sensor interfaces. The amplifier features proprietary continuous auto-zero correction circuitry, which enhances common-mode rejection ratio (CMRR) and power supply rejection ratio (PSRR), and eliminates the need for calibration in many circuits.
Key Specifications
| Parameter | Typical Value | Maximum Value | Unit |
|---|---|---|---|
| Input Offset Voltage | −0.4 µV | ±5 µV | µV |
| Input Offset Voltage Drift | −0.004 µV/°C | ±0.02 µV/°C | µV/°C |
| Input Voltage Noise (AV = 1000) | 11 nV/√Hz | nV/√Hz | |
| Open Loop Gain | 160 dB | dB | |
| CMRR | 139 dB | dB | |
| PSRR | 130 dB | dB | |
| Supply Voltage Range | 2.2 V to 5.5 V | V | |
| Supply Current (per Amplifier) | 1.1 mA | mA | |
| Input Bias Current | ±25 pA | pA | |
| Gain Bandwidth Product (GBW) | 5 MHz | MHz | |
| Slew Rate | 2.6 V/µs | V/µs | |
| Operating Temperature Range | −40°C to 125°C | °C | |
| Package Options | 8-Pin VSSOP, 8-Pin SOIC |
Key Features
- Ultra-low input offset voltage and near-zero input offset voltage drift.
- Very low input voltage noise with no 1/f noise component.
- High open loop gain of 160 dB.
- High CMRR and PSRR due to proprietary continuous auto-zero correction circuitry.
- Low supply current of 1.1 mA per amplifier.
- Wide supply voltage range from 2.2 V to 5.5 V.
- Operating temperature range from −40°C to 125°C.
- Available in 8-Pin VSSOP and 8-Pin SOIC packages.
Applications
- Precision instrumentation amplifiers.
- Battery-powered instrumentation.
- Thermocouple amplifiers.
- Bridge amplifiers.
- Position sensors, bridge sensors, and pressure sensors.
- Medical equipment and other high-accuracy applications.
Q & A
- What is the typical input offset voltage of the LMP2022?
The typical input offset voltage is −0.4 µV.
- What is the maximum input offset voltage drift for the LMP2022?
The maximum input offset voltage drift is ±0.02 µV/°C.
- What is the input voltage noise for the LMP2022 at a gain of 1000?
The input voltage noise is 11 nV/√Hz.
- What is the open loop gain of the LMP2022?
The open loop gain is 160 dB.
- What are the package options for the LMP2022?
The LMP2022 is available in 8-Pin VSSOP and 8-Pin SOIC packages.
- What is the supply voltage range for the LMP2022?
The supply voltage range is from 2.2 V to 5.5 V.
- What is the typical supply current per amplifier for the LMP2022?
The typical supply current per amplifier is 1.1 mA.
- What are some common applications for the LMP2022?
Common applications include precision instrumentation amplifiers, battery-powered instrumentation, thermocouple amplifiers, and medical equipment.
- What is the operating temperature range for the LMP2022?
The operating temperature range is from −40°C to 125°C.
- Does the LMP2022 have any special noise characteristics?
Yes, it has very low input voltage noise with no 1/f noise component.
