Overview
The INA199C2QDCKRQ1 is a voltage-output, current-sense amplifier produced by Texas Instruments. This device is part of the INA199-Q1 family, which is AEC-Q100 qualified for automotive applications. It features a zero-drift topology, enabling high-precision measurements across a wide range of common-mode voltages. The INA199C2QDCKRQ1 can sense drops across shunts at common-mode voltages from –0.1 V to 26 V, independent of the supply voltage, making it versatile for various current-sensing applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Voltage Range | 2.7 to 26 | V |
| Common-Mode Voltage Range | –0.1 to 26 | V |
| Gain Options | 50 V/V, 100 V/V, 200 V/V | |
| Offset Voltage (Maximum) | ±150 µV | |
| Gain Error (Maximum over Temperature) | ±1% (C version), ±1.5% (B version) | |
| Offset Drift | 0.5 µV/°C | |
| Gain Drift | 10 ppm/°C | |
| Quiescent Current (Maximum) | 100 µA | |
| Bandwidth (CLOAD = 10 pF) | 30 kHz (INA199x2-Q1) | |
| Slew Rate | 0.4 V/µs | |
| Voltage Noise Density | 25 nV/√Hz | |
| Operating Temperature Range | –40°C to 125°C | |
| Package | 6-pin SC70 (SOT-SC70) |
Key Features
- AEC-Q100 qualified for automotive applications with a temperature grade 1: –40°C to 125°C.
- Functional Safety-Capable.
- Wide common-mode range: –0.1 V to 26 V.
- Zero-drift topology with an offset voltage of ±150 µV (maximum), enabling shunt drops as low as 10-mV full-scale.
- Choice of fixed gains: 50 V/V, 100 V/V, and 200 V/V.
- Low quiescent current: 100 µA (maximum).
- High accuracy with gain error of ±1% (C version) and ±1.5% (B version) over the full temperature range.
- Low offset drift and gain drift: 0.5 µV/°C and 10 ppm/°C, respectively.
Applications
The INA199C2QDCKRQ1 is designed for various automotive and industrial current-sensing applications, including:
- Automotive systems: battery management, motor control, and power distribution.
- Industrial automation: motor control, power supplies, and current monitoring.
- High-side and low-side current sensing in power management systems.
- Precision current measurement in high-reliability environments.
Q & A
- What is the operating voltage range of the INA199C2QDCKRQ1?
The operating voltage range is from 2.7 V to 26 V.
- What are the available gain options for the INA199C2QDCKRQ1?
The available gain options are 50 V/V, 100 V/V, and 200 V/V.
- What is the maximum offset voltage of the INA199C2QDCKRQ1?
The maximum offset voltage is ±150 µV.
- What is the quiescent current of the INA199C2QDCKRQ1?
The maximum quiescent current is 100 µA.
- What is the bandwidth of the INA199x2-Q1 at CLOAD = 10 pF?
The bandwidth is 30 kHz.
- What is the slew rate of the INA199C2QDCKRQ1?
The slew rate is 0.4 V/µs.
- What is the voltage noise density of the INA199C2QDCKRQ1?
The voltage noise density is 25 nV/√Hz.
- What is the operating temperature range of the INA199C2QDCKRQ1?
The operating temperature range is –40°C to 125°C.
- What package type is the INA199C2QDCKRQ1 available in?
The device is available in a 6-pin SC70 (SOT-SC70) package.
- Is the INA199C2QDCKRQ1 AEC-Q100 qualified?
Yes, the INA199C2QDCKRQ1 is AEC-Q100 qualified for automotive applications.
- What are some typical applications of the INA199C2QDCKRQ1?
Typical applications include automotive systems, industrial automation, high-side and low-side current sensing, and precision current measurement in high-reliability environments.
