Overview
The INA141UA/2K5 from Texas Instruments is a precision, low-power instrumentation amplifier designed for a wide range of applications requiring high accuracy and low noise. This device features a versatile three-op-amp design and is known for its excellent performance in various environments. The INA141UA/2K5 operates with a wide supply range and offers high common-mode rejection, making it suitable for temperature transmitters, medical instrumentation, data acquisition, and process analytics.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Gain | 10 V/V or 100 V/V | - |
| Input Offset Voltage | ±50 µV (G = 10 V/V), ±20 µV (G = 100 V/V) | µV |
| Offset Voltage Drift | ±0.5 µV/°C (G = 10 V/V), ±0.2 µV/°C (G = 100 V/V) | µV/°C |
| Input Bias Current | 5 nA, maximum | nA |
| Common-Mode Rejection Ratio (CMRR) | 117 dB, minimum | dB |
| Input Protection | ±40 V | V |
| Supply Voltage Range | ±2.25 V to ±18 V | V |
| Quiescent Current | 750 µA | µA |
| Bandwidth | 1 MHz (-3 dB) | MHz |
| Slew Rate | 4 V/µs | V/µs |
| Operating Temperature Range | -40°C to +85°C | °C |
| Package | 8-SOIC (0.154", 3.90mm Width) | - |
Key Features
- Low offset voltage: 50 µV maximum at G = 100 V/V
- Low drift: 0.5 µV/°C maximum at G = 100 V/V
- Accurate gain: ±0.05% at G = 10 V/V
- Low input bias current: 5 nA, maximum
- High CMR: 117 dB, minimum
- Inputs protected to ±40 V
- Wide supply range: ±2.25 V to ±18 V
- Low quiescent current: 750 µA
- Current-feedback input circuitry for wide bandwidth even at high gain (200 kHz at G = 100 V/V)
Applications
- Temperature transmitters
- Medical instrumentation
- Data acquisition (DAQ)
- Process analytics (pH, gas, concentration, force, and humidity)
Q & A
- What is the gain range of the INA141UA/2K5? The INA141UA/2K5 has a gain range of 10 V/V or 100 V/V.
- What is the input offset voltage of the INA141UA/2K5? The input offset voltage is ±50 µV at G = 10 V/V and ±20 µV at G = 100 V/V.
- What is the offset voltage drift of the INA141UA/2K5? The offset voltage drift is ±0.5 µV/°C at G = 10 V/V and ±0.2 µV/°C at G = 100 V/V.
- What is the input bias current of the INA141UA/2K5? The input bias current is 5 nA, maximum.
- What is the common-mode rejection ratio (CMRR) of the INA141UA/2K5? The CMRR is 117 dB, minimum.
- What is the supply voltage range of the INA141UA/2K5? The supply voltage range is ±2.25 V to ±18 V.
- What is the quiescent current of the INA141UA/2K5? The quiescent current is 750 µA.
- What is the bandwidth of the INA141UA/2K5? The bandwidth is 1 MHz (-3 dB).
- What is the slew rate of the INA141UA/2K5? The slew rate is 4 V/µs.
- What is the operating temperature range of the INA141UA/2K5? The operating temperature range is -40°C to +85°C.
