Overview
The INA293B1IDBVR, produced by Texas Instruments, is a high-precision current sense amplifier designed for a wide range of current sensing applications. This device features a precision zero-drift topology, offering excellent common-mode rejection ratio (CMRR) and high bandwidth. It is available in multiple gain options to optimize the output dynamic range based on the application requirements.
The INA293B1IDBVR operates with a wide common-mode voltage range from -4 V to +110 V, making it suitable for both low and high side current-sensing applications. Its high bandwidth of 1.3 MHz and fast slew rate of 2.5 V/µs enable it to detect and protect against fast inrush currents effectively.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Supply Voltage (Vs) | 2.7 | - | 20 | V |
| Common-Mode Input Range (VCM) | -4 | - | 110 | V |
| Common-Mode Rejection Ratio (CMRR) | 140 | 160 | - | dB |
| Gain Error | ±0.02% | - | ±0.15% | % |
| Offset Voltage (Vos) | ±30 µV | ±15 µV | ±150 µV | µV |
| Bandwidth (BW) | 1.3 MHz | - | - | kHz |
| Slew Rate (SR) | 2.5 V/µs | - | - | V/µs |
| Quiescent Current (IQ) | 1.5 mA | - | 2 mA | mA |
| Gain (G) | 20 V/V | - | - | V/V |
Key Features
- Wide Common-Mode Voltage Range: Operational voltage from -4 V to +110 V and survival voltage from -20 V to +120 V.
- Excellent CMRR: 160-dB DC-CMRR and 85-dB AC-CMRR at 50 kHz.
- Precision Gain Options: Available gains of 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 Offset Voltage and Drift: Typical offset voltage of ±15 µV and offset drift of ±0.05 µV/°C.
- Wide Supply Range: Operates with supply voltages from 2.7 V to 20 V.
- Low Quiescent Current: 1.5 mA typical quiescent current.
Applications
- Active Antenna Systems (AAS) and mMIMO: Suitable for high-frequency and high-power applications in wireless communication systems.
- Industrial Automation: Used in motor control, power supplies, and other industrial automation applications requiring precise current sensing.
- Automotive Systems: Applicable in automotive systems for battery management, motor control, and other high-current sensing needs.
- Power Supplies and DC-DC Converters: Ideal for monitoring and controlling current in power supply units and DC-DC converters.
- Medical Devices: Used in medical equipment requiring precise current measurement and monitoring.
Q & A
- What is the operational common-mode voltage range of the INA293B1IDBVR?
The operational common-mode voltage range is from -4 V to +110 V.
- What are the available gain options for the INA293 series?
The available gains are 20 V/V, 50 V/V, 100 V/V, 200 V/V, and 500 V/V.
- What is the typical offset voltage of the INA293B1IDBVR?
The typical offset voltage is ±15 µV.
- What is the bandwidth of the INA293B1IDBVR?
The bandwidth is 1.3 MHz.
- What is the slew rate of the INA293B1IDBVR?
The slew rate is 2.5 V/µs.
- What is the quiescent current of the INA293B1IDBVR?
The typical quiescent current is 1.5 mA.
- What is the common-mode rejection ratio (CMRR) of the INA293B1IDBVR?
The CMRR is 160 dB DC and 85 dB at 50 kHz.
- Can the INA293B1IDBVR be used for both low and high side current sensing?
- What are some typical applications of the INA293B1IDBVR?
Typical applications include active antenna systems, industrial automation, automotive systems, power supplies, and medical devices.
- What is the operating temperature range of the INA293B1IDBVR?
The operating temperature range is from -40°C to +125°C.
