Overview
The INA186A1IDCKR is a high-performance, bidirectional, low-power, zero-drift current-sense amplifier produced by Texas Instruments. This device is designed for precision current measurement and is particularly useful in applications requiring high accuracy and low power consumption. The INA186A1IDCKR can sense currents across a wide dynamic range and operates with common-mode voltages from –0.2 V to +40 V, independent of the supply voltage. It is suitable for both high-side and low-side current-sensing configurations and features an enable pin for power management.
Key Specifications
| Parameter | Min | Typical | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VS) | 1.7 V | 5.5 V | V | |
| Common-Mode Voltage Range (VCM) | –0.2 V | +40 V | V | |
| Input Bias Current (IIB) | 500 pA | pA | ||
| Quiescent Current (IQ) | 48 µA | 90 µA | µA | |
| Offset Voltage (VOS) | –50 µV | +50 µV | µV | |
| Offset Drift (dVOS/dT) | 0.05 µV/°C | 0.5 µV/°C | µV/°C | |
| Common-Mode Rejection Ratio (CMRR) | 120 dB | 150 dB | dB | |
| Gain Error (EG) | ±1% | % | ||
| Gain Drift | 10 ppm/°C | ppm/°C | ||
| Output Swing | GND + 1 mV | VS – 40 mV | V | |
| Operating Temperature Range | –40°C | +125°C | °C | |
| Package Options | SC70, SOT-23-THIN, DSBGA |
Key Features
- Wide Common-Mode Voltage Range: Operates with common-mode voltages from –0.2 V to +40 V, independent of the supply voltage.
- Low Input Bias Current: Typical input bias current of 500 pA, enabling accurate microamp current measurements.
- Low Power Consumption: Low supply voltage (1.7 V to 5.5 V) and low quiescent current (48 µA typical).
- High Accuracy: Low offset voltage (±50 µV maximum) and low gain error (±1% maximum).
- Bidirectional Current Sensing: Supports both high-side and low-side current-sensing configurations.
- Gain Options: Available in five fixed gain options: 25 V/V, 50 V/V, 100 V/V, 200 V/V, and 500 V/V.
- High Common-Mode Rejection Ratio: Typically 150 dB, ensuring accurate measurements across a wide range of voltage rails.
- Rail-to-Rail Output Swing: Output voltage can swing close to the supply rail and ground, maximizing the usable output range.
- Enable Pin: Available in some packages, allowing for power management by putting the output in a high-impedance state when disabled.
Applications
- Standard Notebook PC: For precise current monitoring and management.
- Smartphone: To optimize battery life and performance.
- Consumer Battery Charger: For accurate current sensing and overcurrent protection.
- Baseband Unit (BBU): In telecommunications equipment for power management.
- Merchant Network and Server PSU: For high-accuracy current monitoring in power supplies.
- Battery Test Equipment: To measure and analyze battery performance accurately.
Q & A
- What is the common-mode voltage range of the INA186A1IDCKR?
The INA186A1IDCKR operates with common-mode voltages from –0.2 V to +40 V. - What are the typical input bias currents of the INA186A1IDCKR?
The typical input bias current is 500 pA. - What is the supply voltage range for the INA186A1IDCKR?
The supply voltage range is from 1.7 V to 5.5 V. - What are the available gain options for the INA186A1IDCKR?
The device is available in five fixed gain options: 25 V/V, 50 V/V, 100 V/V, 200 V/V, and 500 V/V. - What is the typical quiescent current of the INA186A1IDCKR?
The typical quiescent current is 48 µA. - Does the INA186A1IDCKR support bidirectional current sensing?
Yes, it supports both high-side and low-side bidirectional current sensing. - What is the common-mode rejection ratio (CMRR) of the INA186A1IDCKR?
The CMRR is typically 150 dB. - What are the package options available for the INA186A1IDCKR?
The device is available in SC70, SOT-23-THIN, and DSBGA packages. - How does the enable pin function in the INA186A1IDCKR?
The enable pin allows the output to go into a high-impedance state when disabled, reducing supply current draw to less than 0.1 µA. - What is the operating temperature range of the INA186A1IDCKR?
The operating temperature range is from –40°C to +125°C.
