Overview
The INA141U/2K5G4 is a low-power, general-purpose instrumentation amplifier produced by Texas Instruments. This device is known for its excellent accuracy and versatility, making it an excellent choice for a wide range of applications. The INA141U features a three-op-amp design and is available in an 8-pin SOIC package. It operates over a temperature range of -40°C to +85°C and is laser trimmed for very low offset voltage, drift, and high common-mode rejection ratio (CMRR).
Key Specifications
| Parameter | Value |
|---|---|
| Package | 8-pin SOIC |
| Operating Temperature Range | -40°C to +85°C |
| Input Offset Voltage | 50 µV maximum at G = 100 V/V |
| Offset Voltage Drift | 0.5 µV/°C maximum at G = 100 V/V |
| Gain Accuracy | ±0.05% at G = 10 V/V |
| Input Bias Current | 5 nA, maximum |
| Common-Mode Rejection Ratio (CMRR) | 117 dB, minimum at G = 100 V/V |
| Input Protection | Up to ±40 V |
| Supply Voltage Range | ±2.25 V to ±18 V |
| Quiescent Current | 750 µA |
| Slew Rate | 4 V/µs |
| -3dB Bandwidth | 1 MHz |
| Output Current per Channel | 15 mA |
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 CMRR: 117 dB, minimum at G = 100 V/V
- Inputs protected to ±40 V
- Wide supply range: ±2.25 V to ±18 V
- Low quiescent current: 750 µA
- Current-feedback input circuitry providing wide bandwidth even at high gain (200 kHz at G = 100 V/V)
- Simple pin connections for setting accurate gain without external resistors
Applications
- Temperature transmitters
- Medical instrumentation
- Data acquisition (DAQ)
- Process analytics (pH, gas, concentration, force, and humidity)
Q & A
- What is the package type of the INA141U/2K5G4?
The INA141U/2K5G4 is available in an 8-pin SOIC package.
- What is the operating temperature range of the INA141U/2K5G4?
The operating temperature range is -40°C to +85°C.
- What is the input offset voltage of the INA141U/2K5G4?
The input offset voltage is 50 µV maximum at G = 100 V/V.
- What is the common-mode rejection ratio (CMRR) of the INA141U/2K5G4?
The CMRR is 117 dB, minimum at G = 100 V/V.
- What is the supply voltage range for the INA141U/2K5G4?
The supply voltage range is ±2.25 V to ±18 V.
- What is the quiescent current of the INA141U/2K5G4?
The quiescent current is 750 µA.
- What is the slew rate of the INA141U/2K5G4?
The slew rate is 4 V/µs.
- What is the -3dB bandwidth of the INA141U/2K5G4?
The -3dB bandwidth is 1 MHz.
- What are some common applications of the INA141U/2K5G4?
Common applications include temperature transmitters, medical instrumentation, data acquisition (DAQ), and process analytics.
- How is the gain set for the INA141U/2K5G4?
The gain can be set to 10 V/V or 100 V/V using simple pin connections without external resistors.
- What kind of input protection does the INA141U/2K5G4 have?
The inputs are protected to withstand up to ±40 V without damage).
