Overview
The INA122UA/2K5 is a precision instrumentation amplifier produced by Texas Instruments. It is designed for accurate, low-noise differential signal acquisition and is particularly suited for portable instrumentation and data acquisition systems. The amplifier features a two-op-amp design, which provides excellent performance with very low quiescent current of 60μA. It can operate with single or dual power supplies ranging from 2.2V to 36V, making it versatile for various applications. The gain of the amplifier can be set using an external resistor, allowing gains from 5V/V to 10000V/V.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Quiescent Current | 60 | μA |
| Power Supply Range | 2.2 to 36 | V |
| Output Swing | Rail-to-rail | |
| Input Offset Voltage | 250 | μV (maximum) |
| Input Offset Drift | 3 | μV/°C (maximum) |
| Voltage Noise | 60 | nV/√Hz at 1 kHz |
| Input Bias Current | 25 | nA (maximum) |
| Bandwidth | Up to 120 kHz | |
| Slew Rate | 0.08 V/μs (rising), 0.12 V/μs (falling) | |
| Package | 8-SOIC |
Key Features
- Low quiescent current: 60μA
- Wide power supply range: 2.2V to 36V
- Rail-to-rail output swing
- Low offset voltage: 250μV maximum
- Low offset drift: 3μV/°C maximum
- Low noise: 60nV/√Hz at 1 kHz
- Low input bias current: 25nA maximum
- External gain-setting resistor for gains from 5V/V to 10000V/V
Applications
- Portable electronics
- Field transmitters and sensors
- Pressure transmitters
- Infusion pumps
- Electrocardiograms (ECGs)
Q & A
- What is the quiescent current of the INA122UA/2K5?
The quiescent current is 60μA.
- What is the power supply range for the INA122UA/2K5?
The power supply range is from 2.2V to 36V.
- What is the output swing of the INA122UA/2K5?
The output swing is rail-to-rail.
- What is the maximum input offset voltage of the INA122UA/2K5?
The maximum input offset voltage is 250μV.
- How is the gain of the INA122UA/2K5 set?
The gain is set using an external resistor, allowing gains from 5V/V to 10000V/V.
- What is the bandwidth of the INA122UA/2K5?
The bandwidth is up to 120 kHz.
- What is the slew rate of the INA122UA/2K5?
The slew rate is 0.08 V/μs (rising) and 0.12 V/μs (falling).
- In what package is the INA122UA/2K5 available?
The INA122UA/2K5 is available in an 8-SOIC package.
- What are some common applications of the INA122UA/2K5?
Common applications include portable electronics, field transmitters and sensors, pressure transmitters, infusion pumps, and electrocardiograms (ECGs).
- Is the INA122UA/2K5 RoHS compliant?
