Overview
The INA332AIDGKRG4, produced by Texas Instruments, is a low-power, single-supply, CMOS instrumentation amplifier. It is part of the INA332 family, which is designed for low-cost, high-precision applications. This amplifier offers rail-to-rail output, wide range single-supply and bipolar-supply operation, and low quiescent current, making it suitable for battery-powered and multichannel applications. The INA332AIDGKRG4 is optimized for low noise amplification of differential signals and features a shutdown mode that reduces the quiescent current to 0.01µA.
Key Specifications
| Parameter | Condition | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Input Offset Voltage, RTI | VS = +5V | ±2 | ±8 | ±9 | mV |
| Temperature Coefficient | dVOS/dT | ±5 | µV/°C | ||
| Power Supply Rejection Ratio (PSRR) | VS = +2.7V to +5.5V | ±50 | ±250 | ±260 | µV/V |
| Input Impedance | 1013 || 3 | Ω || pF | |||
| Bandwidth | 2.0MHz | ||||
| Slew Rate | 5V/µs | ||||
| Quiescent Current | 490µA max/chan | ||||
| Shutdown Current | 0.01µA | ||||
| Temperature Range | –55°C | +125°C | °C |
Key Features
- Low-power, single-supply operation with a quiescent current of 490µA max per channel and shutdown current of 0.01µA.
- Rail-to-rail output swing, allowing for maximum output voltage close to the supply rails.
- High gain accuracy with a gain of 5V/V and the ability to set higher gains using external resistors.
- High common-mode rejection ratio (CMRR) of 73dB DC and 50dB at 45kHz.
- Low bias current of 0.5pA.
- Wide temperature range of –55°C to +125°C.
- Available in MSOP-8 single and TSSOP-14 dual packages.
- High bandwidth and slew rate, making it ideal for driving sampling Analog-to-Digital (A/D) converters.
Applications
- Industrial sensor amplifiers: Bridge, RTD, Thermocouple, Position sensors.
- Physiological amplifiers: ECG, EEG, EMG.
- A/D converter signal conditioning.
- Differential line receivers with gain.
- Field utility meters.
- PCMCIA cards.
- Audio amplifiers.
- Communication systems.
- Test equipment.
- Automotive instrumentation.
Q & A
- What is the typical quiescent current of the INA332AIDGKRG4?
The typical quiescent current is 490µA max per channel.
- How does the INA332AIDGKRG4 achieve low power consumption?
The INA332AIDGKRG4 achieves low power consumption through its low quiescent current and a shutdown mode that reduces the current to 0.01µA.
- What is the common-mode rejection ratio (CMRR) of the INA332AIDGKRG4?
The CMRR is 73dB DC and 50dB at 45kHz.
- How can the gain of the INA332AIDGKRG4 be adjusted?
The gain can be adjusted using external resistors according to the equation: G = 5 + 5(R2/R1).
- What is the bandwidth of the INA332AIDGKRG4?
The bandwidth is 2.0MHz.
- What is the slew rate of the INA332AIDGKRG4?
The slew rate is 5V/µs.
- In what temperature range can the INA332AIDGKRG4 operate?
The INA332AIDGKRG4 can operate in a temperature range of –55°C to +125°C.
- What are some common applications of the INA332AIDGKRG4?
Common applications include industrial sensor amplifiers, physiological amplifiers, A/D converter signal conditioning, and more.
- How is the output voltage swing of the INA332AIDGKRG4 characterized?
The output voltage swing is rail-to-rail, allowing for maximum output voltage close to the supply rails.
- What packages are available for the INA332AIDGKRG4?
The INA332AIDGKRG4 is available in MSOP-8 single and TSSOP-14 dual packages.
