Overview
The INA199B2DCKR is a 26-V, bidirectional, zero-drift, low- or high-side, voltage-output current shunt monitor produced by Texas Instruments. This component is designed for precision current sensing applications, offering a wide common-mode voltage range and programmable gain. It is particularly useful for overcurrent protection, accurate current measurement, and efficient closed-loop feedback control in various electronic systems.
The device features a small form factor, packaged in a SOT-SC70 (DCK)-6 package, making it suitable for space-constrained designs. It operates with a supply voltage from 2.7V to 26V and has a temperature range of -40°C to 125°C, ensuring reliability across a broad range of operating conditions.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package Type | SOT-SC70 (DCK)-6 |
| Common-mode voltage (max) (V) | 26 |
| Common-mode voltage (min) (V) | -0.3 |
| Input offset (±) (max) (µV) | 150 |
| Input offset drift (±) (typ) (µV/°C) | 0.1 |
| Voltage gain (V/V) | 50, 100, 200 |
| CMRR (min) (dB) | 100 |
| Bandwidth (kHz) | 14, 30, 80 |
| Supply voltage (max) (V) | 26 |
| Supply voltage (min) (V) | 2.7 |
| Iq (max) (mA) | 0.115 |
| Number of channels | 1 |
| Comparators (#) | 0 |
| Gain error (%) | 0.9, 1.4 |
| Gain error drift (±) (max) (ppm/°C) | 10 |
| Slew rate (V/µs) | 0.4 |
| Operating temperature range (°C) | -40 to 125 |
Key Features
- Bidirectional Current Sensing: The INA199B2DCKR can measure current in both directions, making it versatile for various applications.
- Zero-Drift Technology: Ensures consistent and reliable signal amplification with minimal drift over temperature.
- Low Offset Voltage: Maximum offset voltage of ±150 µV, enabling accurate measurements even with small shunt drops.
- Wide Common-Mode Range: Operates from -0.3 V to 26 V, suitable for a wide range of applications.
- Programmable Gain: Available in gains of 50, 100, and 200 V/V, allowing for flexibility in system design.
- Low Quiescent Current: Maximum quiescent current of 115 µA, contributing to power efficiency.
- Fast Response Time: Response time of 25 µs, ensuring quick and accurate current measurements.
- Low Distortion: Offers low distortion of 0.3%, ensuring high signal integrity.
Applications
- Power Management: Used in power supplies, battery chargers, and other power management systems for accurate current measurement and overcurrent protection.
- Motor Control: Suitable for motor control systems where precise current measurement is crucial.
- Portable Devices: Ideal for power management in portable devices such as notebook computers and cell phones.
- Telecom Equipment: Used in telecom equipment for current monitoring and control.
- Qi-Compliant Wireless Charging Transmitters: Applicable in wireless charging systems for precise current measurement.
Q & A
- What is the maximum common-mode voltage range of the INA199B2DCKR?
The maximum common-mode voltage range is 26 V, and the minimum is -0.3 V.
- What are the available gain options for the INA199B2DCKR?
The device is available with gains of 50, 100, and 200 V/V.
- What is the operating temperature range of the INA199B2DCKR?
The operating temperature range is -40°C to 125°C.
- What is the maximum quiescent current of the INA199B2DCKR?
The maximum quiescent current is 115 µA.
- What is the slew rate of the INA199B2DCKR?
The slew rate is 0.4 V/µs.
- What package type is the INA199B2DCKR available in?
The device is packaged in a SOT-SC70 (DCK)-6 package.
- What are some typical applications of the INA199B2DCKR?
Typical applications include power management in portable devices, battery chargers, motor control systems, and telecom equipment.
- Does the INA199B2DCKR support bidirectional current sensing?
Yes, the INA199B2DCKR supports bidirectional current sensing.
- What is the bandwidth of the INA199B2DCKR?
The bandwidth varies depending on the gain setting: 14 kHz, 30 kHz, and 80 kHz for gains of 200, 100, and 50 V/V respectively.
- Is the INA199B2DCKR suitable for high-side current sensing?
Yes, the INA199B2DCKR is capable of both low-side and high-side current sensing.
