Overview
The INA2290A4IDGKR is a dual-channel, ultra-precise current-sense amplifier produced by Texas Instruments. This device is part of the INAx290 family, which includes single-channel (INA290), dual-channel (INA2290), and quad-channel (INA4290) variants. The INA2290A4IDGKR is designed for high-side current sensing and features a wide common-mode voltage range from 2.7 V to 120 V, making it suitable for various high-voltage applications. It boasts excellent common-mode rejection ratio (CMRR) of 160 dB (typical) and high bandwidth of 1.1 MHz, enabling precise current measurements in both DC and high-speed applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage | 2.7 to 20 | V |
| Common-Mode Voltage Range | 2.7 to 120 | V |
| Common-Mode Rejection Ratio (DC) | 160 | dB |
| Common-Mode Rejection Ratio (AC at 50 kHz) | 85 | dB |
| Offset Voltage (Input Referred) | ±12 µV (A4 devices) | µV |
| Gain Error | ±0.1% | % |
| Bandwidth | 1.1 MHz (at gain of 20 V/V) | MHz |
| Slew Rate | 2 V/µs | V/µs |
| Quiescent Current per Channel | 370 to 500 | µA |
| Operating Temperature Range | –40°C to +125°C | °C |
| Package | MSOP-8 |
Key Features
- Wide Common-Mode Voltage Range: Operational from 2.7 V to 120 V, and survival up to ±122 V.
- High Precision: Ultra-low offset voltage of ±12 µV (maximum) and small gain error of ±0.1% (maximum).
- High Bandwidth and Slew Rate: 1.1 MHz bandwidth and 2 V/µs slew rate, suitable for high-speed applications.
- Multiple Gain Options: Available in five gain options: 20 V/V, 50 V/V, 100 V/V, 200 V/V, and 500 V/V.
- Low Power Consumption: Quiescent current per channel is typically 370 µA.
- Compact Packaging: Available in MSOP-8 package for the dual-channel variant.
Applications
- Server and Network Power Supplies: Suitable for monitoring current in high-voltage power supplies.
- Test and Measurement Equipment: Used in SAR ADCs and other precision measurement instruments.
- Fast Overcurrent Protection: Ideal for applications requiring rapid detection of overcurrent conditions.
- Automotive and Industrial Systems: Can be used in various high-voltage and high-current monitoring applications.
Q & A
- What is the common-mode voltage range of the INA2290A4IDGKR?
The common-mode voltage range is from 2.7 V to 120 V. - What are the available gain options for the INA2290A4IDGKR?
The device is available in five gain options: 20 V/V, 50 V/V, 100 V/V, 200 V/V, and 500 V/V. - What is the typical quiescent current per channel for the INA2290A4IDGKR?
The typical quiescent current per channel is 370 µA. - What is the maximum operating temperature for the INA2290A4IDGKR?
The maximum operating temperature is +125°C. - What is the package type for the INA2290A4IDGKR?
The package type is MSOP-8. - What is the slew rate of the INA2290A4IDGKR?
The slew rate is 2 V/µs. - What is the bandwidth of the INA2290A4IDGKR at a gain of 20 V/V?
The bandwidth is 1.1 MHz at a gain of 20 V/V. - What is the typical common-mode rejection ratio (CMRR) of the INA2290A4IDGKR?
The typical CMRR is 160 dB. - Is the INA2290A4IDGKR suitable for high-speed applications?
Yes, it is suitable for high-speed applications due to its high bandwidth and fast slew rate. - What are some typical applications of the INA2290A4IDGKR?
Typical applications include server and network power supplies, test and measurement equipment, fast overcurrent protection, and automotive and industrial systems.
