Overview
The INA199C2DCKR from Texas Instruments is a part of the INA199 series, which are voltage-output, current-shunt monitors, also known as current-sense amplifiers. These devices are designed for high-precision current measurement and are suitable for both low-side and high-side configurations. The INA199 series features a zero-drift topology, enabling accurate measurements with minimal offset voltage and drift over a wide temperature range. This makes them ideal for applications requiring precise current sensing, such as overcurrent protection, system optimization, and closed-loop feedback circuits.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage | 2.7 to 26 | V |
| Common-Mode Range | –0.3 to 26 | V |
| Offset Voltage (Maximum) | ±150 μV | μV |
| Gain Error (Maximum Over Temperature) | ±1% (C Version), ±1.5% (A and B Versions) | % |
| Gain Options | 50 V/V, 100 V/V, 200 V/V | V/V |
| Quiescent Current (Maximum) | 100 μA | μA |
| Operating Temperature Range | –40 to 125 | °C |
| Bandwidth (CLOAD = 10 pF) | 80 kHz (INA199x1), 30 kHz (INA199x2), 14 kHz (INA199x3) | kHz |
| Slew Rate | 0.4 V/μs | V/μs |
| Voltage Noise Density | 25 nV/√Hz | nV/√Hz |
| Package | 6-Pin SC70, 10-Pin UQFN |
Key Features
- Wide common-mode range: –0.3 V to 26 V
- Low offset voltage: ±150 μV (Maximum)
- High accuracy with low gain error and drift: ±1% (C Version), ±1.5% (A and B Versions), 0.5 μV/°C offset drift, and 10 ppm/°C gain drift
- Choice of gains: 50 V/V, 100 V/V, and 200 V/V
- Low quiescent current: 100 μA (Maximum)
- High bandwidth: Up to 80 kHz depending on the gain version
- Small package options: 6-Pin SC70 and 10-Pin UQFN
Applications
- Notebook Computers
- Cell Phones
- Qi-Compliant Wireless Charging Transmitters
- Telecom Equipment
- Power Management
- Battery Chargers
Q & A
- What is the INA199C2DCKR used for? The INA199C2DCKR is used for high-precision current measurement in applications such as overcurrent protection, system optimization, and closed-loop feedback circuits.
- What are the key features of the INA199 series? Key features include a wide common-mode range, low offset voltage, high accuracy, choice of gains, low quiescent current, and high bandwidth.
- What are the available gain options for the INA199 series? The gain options are 50 V/V, 100 V/V, and 200 V/V.
- What is the operating temperature range of the INA199C2DCKR? The operating temperature range is –40°C to 125°C.
- What packages are available for the INA199 series? The devices are available in 6-Pin SC70 and 10-Pin UQFN packages.
- How does the zero-drift topology benefit the INA199 series? The zero-drift topology enables high-precision measurements with minimal offset voltage and drift over a wide temperature range.
- What are some common applications of the INA199 series? Common applications include notebook computers, cell phones, Qi-compliant wireless charging transmitters, telecom equipment, power management, and battery chargers.
- What is the maximum quiescent current of the INA199C2DCKR? The maximum quiescent current is 100 μA.
- How does the INA199 series handle common-mode transients above 26 V? The INA199 series can handle common-mode transients above 26 V with additional circuitry using Zener diodes or Zener-type transient absorbers.
- What is the bandwidth of the INA199C2DCKR? The bandwidth depends on the gain version, with up to 80 kHz for the INA199x1, 30 kHz for the INA199x2, and 14 kHz for the INA199x3.
