Overview
The INA293A1IDBVR, produced by Texas Instruments, is a high-precision current sense amplifier designed for a wide range of applications requiring accurate current measurement. This device operates with a wide common-mode voltage range from -4 V to +110 V, making it suitable for both high-side and low-side current sensing. The INA293A1IDBVR features a precision zero-drift topology, excellent common-mode rejection ratio (CMRR), and high bandwidth, ensuring high accuracy and reliability in current measurement.
The device is part of the INA293 family, which offers multiple gain options to optimize the output dynamic range based on the application requirements. The INA293A1IDBVR specifically has a gain of 20 V/V, making it versatile for various current sensing needs.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Operational Voltage Range | -4 | 110 | V | |
| Survival Voltage Range | -20 | 120 | V | |
| Common-Mode Rejection Ratio (CMRR) | 140 | 160 | dB | |
| Gain Error | ±0.15% | |||
| Offset Voltage | ±30 | ±150 | µV | |
| Bandwidth | 1300 | kHz | ||
| Slew Rate | 2.5 | V/µs | ||
| Quiescent Current | 1.5 | 2 | mA | |
| Supply Voltage Range | 2.7 | 20 | V | |
| Operating Temperature Range | -55 | 150 | °C |
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 Zero-Drift Topology: Ensures high accuracy with low offset voltage and drift.
- High Bandwidth and Slew Rate: 1.3 MHz bandwidth and 2.5 V/µs slew rate for fast signal throughput.
- Multiple Gain Options: Available gains include 20 V/V, 50 V/V, 100 V/V, 200 V/V, and 500 V/V.
- 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: For precise current sensing in advanced antenna systems.
- Industrial Automation: For monitoring and controlling current in industrial automation systems.
- Automotive Systems: For current sensing in high-voltage automotive applications.
- Power Supplies and DC-DC Converters: For accurate current measurement and protection.
- Renewable Energy Systems: For monitoring current in solar and wind power systems.
Q & A
- What is the operational voltage range of the INA293A1IDBVR?
The operational voltage range is from -4 V to +110 V.
- What is the common-mode rejection ratio (CMRR) of the INA293A1IDBVR?
The CMRR is 160 dB DC and 85 dB AC at 50 kHz.
- What are the available gain options for the INA293 family?
The available gains are 20 V/V, 50 V/V, 100 V/V, 200 V/V, and 500 V/V.
- What is the bandwidth of the INA293A1IDBVR?
The bandwidth is 1.3 MHz.
- What is the slew rate of the INA293A1IDBVR?
The slew rate is 2.5 V/µs.
- What is the quiescent current of the INA293A1IDBVR?
The quiescent current is 1.5 mA typical.
- What is the supply voltage range for the INA293A1IDBVR?
The supply voltage range is from 2.7 V to 20 V.
- What are some common applications of the INA293A1IDBVR?
Common applications include active antenna systems, industrial automation, automotive systems, power supplies, and renewable energy systems.
- Can the INA293A1IDBVR be used for both high-side and low-side current sensing?
- How does the INA293A1IDBVR ensure high accuracy in current measurement?
