Overview
The INA293B2QDBVRQ1 is a high-performance, ultra-precise current sense amplifier produced by Texas Instruments. This device is part of the INA293-Q1 family, which is AEC-Q100 qualified for automotive applications, ensuring reliability and durability in harsh environments. The INA293B2QDBVRQ1 operates over a wide common-mode range from –4 V to 110 V, making it suitable for various high-side and low-side current sensing applications. It features a precision zero-drift topology, high bandwidth of 1.3 MHz, and a fast slew rate of 2.5 V/µs, enabling accurate and high-speed current measurements.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (Vs) | 2.7 to 20 | V |
| Common-Mode Input Range | –4 to 110 | V |
| Differential Sense Input Range | 0 to Vs | V |
| Gain | 50 V/V | V/V |
| Bandwidth | 1.3 MHz | Hz |
| Slew Rate | 2.5 V/µs | V/µs |
| Quiescent Current | 1.5 mA | mA |
| Operating Temperature Range | –40 to +125 | °C |
| Package | SOT-23 (5 pins) | |
| Body Size | 2.90 mm × 1.60 mm | mm |
Key Features
- AEC-Q100 qualified for automotive applications with a temperature grade of –40 °C to +125 °C.
- Functional Safety-Capable.
- High bandwidth of 1.3 MHz and fast slew rate of 2.5 V/µs for high-speed applications.
- Precision zero-drift topology with low offset voltage and small gain error.
- High DC common-mode rejection ratio (CMRR) and AC CMRR of 85 dB at 50 kHz.
- Single supply operation from 2.7 V to 20 V.
- Low quiescent current of 1.5 mA.
- Available in five gain options: 20 V/V, 50 V/V, 100 V/V, 200 V/V, and 500 V/V.
- Space-saving SOT-23 package with two pin-out variants.
Applications
- 48-V automotive systems.
- Solenoid control.
- 48-V DC/DC converters.
- Valve control.
- High-speed current measurement and fast over-current protection.
Q & A
- What is the common-mode input range of the INA293B2QDBVRQ1?
The common-mode input range is from –4 V to 110 V.
- What are the gain options available for the INA293-Q1 family?
The gain options are 20 V/V, 50 V/V, 100 V/V, 200 V/V, and 500 V/V.
- What is the bandwidth of the INA293B2QDBVRQ1?
The bandwidth is 1.3 MHz.
- What is the slew rate of the INA293B2QDBVRQ1?
The slew rate is 2.5 V/µs.
- What is the operating temperature range of the INA293B2QDBVRQ1?
The operating temperature range is from –40 °C to +125 °C.
- What package type is the INA293B2QDBVRQ1 available in?
The device is available in a SOT-23 (5 pins) package.
- Is the INA293B2QDBVRQ1 AEC-Q100 qualified?
Yes, it is AEC-Q100 qualified for automotive applications.
- What is the quiescent current of the INA293B2QDBVRQ1?
The quiescent current is 1.5 mA.
- What are some typical applications of the INA293B2QDBVRQ1?
Typical applications include 48-V automotive systems, solenoid control, 48-V DC/DC converters, and valve control.
- Does the INA293B2QDBVRQ1 support high-speed current measurement?
Yes, it supports high-speed current measurement and fast over-current protection due to its high bandwidth and fast slew rate.
