Overview
The INA293A2IDBVR, produced by Texas Instruments, is a high-precision current sense amplifier designed for a wide range of applications requiring accurate current measurement. This device is part of the INA293 family, which offers a precision zero-drift topology, excellent common-mode rejection ratio (CMRR), and high bandwidth. The INA293A2IDBVR is specifically configured with a gain of 50 V/V, making it suitable for applications that require a balanced signal-to-noise ratio and high accuracy.
The device operates over a wide common-mode voltage range from -4 V to +110 V, and it is available in a compact 5-pin SOT-23 package. Its transconductance architecture with a current-feedback amplifier enables low bias currents and high performance across the entire valid VSENSE range.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Supply Voltage (Vs) | 2.7 | 20 | V | |
| Common-Mode Input Range | -4 | 110 | V | |
| Gain (INA293A2) | 50 | V/V | ||
| Gain Error | ±0.02% | ±0.15% | % | |
| Offset Voltage | ±15 | ±80 | µV | |
| Offset Drift | ±0.05 | ±0.5 | µV/°C | |
| Bandwidth (CLOAD = 5 pF) | 1300 | kHz | ||
| Slew Rate | 2.5 | V/µs | ||
| Quiescent Current | 1.5 | 2 | mA | |
| Operating Temperature | -55 | 150 | °C |
Key Features
- Wide Common-Mode Voltage Range: Operational from -4 V to +110 V, and survival up to -20 V to +120 V.
- Excellent CMRR: 160-dB DC-CMRR and 85-dB AC-CMRR at 50 kHz.
- Precision Gain Options: Available gains include 20 V/V, 50 V/V, 100 V/V, 200 V/V, and 500 V/V.
- High Bandwidth and Slew Rate: 1.3 MHz bandwidth and 2.5 V/µs slew rate.
- Low Input Bias Current: Typical input bias current of 20 µA at high common-mode voltages.
- Low Offset Voltage and Drift: Typical offset voltage of ±15 µV and offset drift of ±0.05 µV/°C.
- Wide Supply Range: Operates from 2.7 V to 20 V supply voltage.
- Compact Package: Available in a 5-pin SOT-23 package.
Applications
- Active Antenna Systems (AAS) and mMIMO (Massive MIMO): For precise current sensing in high-frequency communication systems.
- Industrial Automation and Control Systems: For monitoring and controlling current in motors, pumps, and other industrial equipment.
- Automotive Systems: For battery management, motor control, and other automotive applications requiring high accuracy current sensing.
- Power Supplies and DC-DC Converters: For monitoring output currents and protecting against overcurrent conditions.
- Medical Devices and Equipment: For precise current measurement in medical devices such as defibrillators and ventilators.
Q & A
- What is the operational common-mode voltage range of the INA293A2IDBVR?
The operational common-mode voltage range is from -4 V to +110 V.
- What is the gain of the INA293A2IDBVR?
The gain of the INA293A2IDBVR is 50 V/V.
- What is the typical offset voltage of the INA293A2IDBVR?
The typical offset voltage is ±15 µV.
- What is the bandwidth of the INA293A2IDBVR?
The bandwidth is 1.3 MHz with a 5 pF load capacitance.
- What is the slew rate of the INA293A2IDBVR?
The slew rate is 2.5 V/µs.
- What is the quiescent current of the INA293A2IDBVR?
The quiescent current is typically 1.5 mA.
- What is the operating temperature range of the INA293A2IDBVR?
The operating temperature range is from -55°C to 150°C.
- What package type is the INA293A2IDBVR available in?
The INA293A2IDBVR is available in a 5-pin SOT-23 package.
- What are some common applications of the INA293A2IDBVR?
Common applications include active antenna systems, industrial automation, automotive systems, power supplies, and medical devices.
- How does the INA293A2IDBVR handle low VSENSE levels?
The INA293A2IDBVR operates with high performance across the entire valid VSENSE range, providing low offset voltage and low offset drift, making it suitable for low VSENSE levels.
