Overview
The INA2128U/1K, produced by Texas Instruments, is a dual, low-power, general-purpose instrumentation amplifier (IA) known for its excellent accuracy and versatility. This device features a three-op-amp design and is packaged in a compact 16-pin SOIC, making it suitable for a wide range of applications. The INA2128U/1K is particularly beneficial in systems requiring high precision, low power consumption, and robust input protection.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 16-pin SOIC (DW) |
| Operating Temperature Range | –40°C to +85°C |
| Supply Voltage Range | ±2.25 V to ±18 V |
| Offset Voltage | 50 µV max |
| Drift | 0.5 µV/°C max |
| Input Bias Current | 5 nA max |
| Input Voltage Noise | 8 nV/√Hz at 1 kHz |
| Bandwidth | 1.3 MHz at G=1 V/V |
| Common-Mode Rejection Ratio (CMRR) | 120 dB min |
| Input Protection | ±40 V |
| Quiescent Current per Channel | 700 µA |
Key Features
- Low offset voltage: 50 µV max
- Low drift: 0.5 µV/°C max
- Low input bias current: 5 nA max
- Input voltage noise: 8 nV/√Hz at 1 kHz
- High bandwidth: 1.3 MHz at G=1 V/V
- High CMRR: 120 dB min
- Inputs protected to ±40 V
- Wide supply range: ±2.25 V to ±18 V
- Low quiescent current: 700 µA per channel
- Temperature range: –40°C to +85°C
- Compact 16-pin SOIC package
Applications
The INA2128U/1K is suitable for a variety of applications, including but not limited to:
- Battery-operated systems due to its low power consumption.
- Multiple-channel systems where precision and low noise are critical.
- Medical devices requiring high accuracy and robust input protection.
- Industrial automation and control systems.
- Aerospace and defense applications where reliability and precision are paramount.
Q & A
- What is the package type of the INA2128U/1K? The INA2128U/1K is packaged in a 16-pin SOIC (DW).
- What is the operating temperature range of the INA2128U/1K? The operating temperature range is –40°C to +85°C.
- What is the maximum offset voltage of the INA2128U/1K? The maximum offset voltage is 50 µV.
- How much input bias current does the INA2128U/1K have? The input bias current is 5 nA max.
- What is the bandwidth of the INA2128U/1K at a gain of 1? The bandwidth is 1.3 MHz at G=1 V/V.
- What is the common-mode rejection ratio (CMRR) of the INA2128U/1K? The CMRR is 120 dB min.
- How much quiescent current does each channel of the INA2128U/1K consume? Each channel consumes 700 µA.
- Can the INA2128U/1K operate with low supply voltages? Yes, it can operate with supply voltages as low as ±2.25 V.
- Is the INA2128U/1K protected against high input voltages? Yes, the inputs are protected up to ±40 V.
- How is the gain of the INA2128U/1K set? The gain can be set using a single external resistor and can range from 1 to 10,000.
