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INA186A5IDCKT

40-V, bidirectional, high-precision current sense amplifier with picoamp input bias & ENABLE

Manufacturer:

Texas Instruments
Mfr.Part #:

INA186A5IDCKT
Datasheet:

INA186A5IDCKT Datasheet (PDF)
Series:

INA186
Number of Channels:

1 Channel
GBP - Gain Bandwidth Product:

27 kHz
Vcm - Common Mode Voltage:

- 200 mV to 40 V
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INA186A5IDCKT General Description

The INA186 is a low-power, voltage-output, current-sense amplifier (also called a current-shunt monitor). This device is commonly used for overcurrent protection, precision current measurement for system optimization, or in closed-loop feedback circuits. The INA186 can sense drops across shunts at common-mode voltages from –0.2 V to +40 V, independent of the supply voltage.

The low input bias current of the INA186 permits the use of larger current-sense resistors, thus providing accurate current measurements in the microamp range. The low offset voltage of the zero-drift architecture extends the dynamic range of the current measurement. This feature allows for smaller sense resistors with lower power loss, while still providing accurate current measurements.

The INA186 operates from a single 1.7-V to 5.5-V power supply, and draws a maximum of 90 µA of supply current . Five fixed gain options are available: 25 V/V, 50 V/V, 100 V/V, 200 V/V, or 500 V/V. The device is specified over the operating temperature range of –40°C to +125°C, and offered in SC70, SOT-23-THIN, and DSBGA packages. The SC70 and SOT-23 (DDF) packages support bidirectional current measurement, whereas the DSBGA package only supports current measurement in one direction.

Key Features

Wide common-mode voltage range, V_CM: –0.2 V to +40 V
Low input bias currents, I_IB: 500 pA (typical) (enables microamp current measurement)
Low power:
- Low supply voltage, V_S: 1.7 V to 5.5 V
- Low quiescent current, I_Q: 48 µA (typical)
Accuracy:
- Common-mode rejection ratio: 120 dB (minimum)
- Gain error, E_G: ±1% (maximum)
- Gain drift: 10 ppm/°C (maximum)
- Offset voltage, V_OS: ±50 µV (maximum)
- Offset drift: 0.5 µV/°C (maximum)
Bidirectional current sensing capability
Gain options:
- INA186A1: 25 V/V
- INA186A2: 50 V/V
- INA186A3: 100 V/V
- INA186A4: 200 V/V
- INA186A5: 500 V/V

Specifications

Product Category	Current Sense Amplifiers	Series	INA186
Number of Channels	1 Channel	GBP - Gain Bandwidth Product	27 kHz
Vcm - Common Mode Voltage	- 200 mV to 40 V	CMRR - Common Mode Rejection Ratio	150 dB
Ib - Input Bias Current	500 pA	Vos - Input Offset Voltage	- 3 uV
Supply Voltage - Max	5.5 V	Supply Voltage - Min	1.7 V
Operating Supply Current	90 uA	Gain Error	- 0.04 %
Minimum Operating Temperature	- 40 C	Maximum Operating Temperature	+ 125 C
Mounting Style	SMD/SMT	Gain V/V	500 V/V
Ios - Input Offset Current	70 pA	Moisture Sensitive	Yes
Output Type	Analog	Product	Current Sense Amplifiers
Product Type	Current Sense Amplifiers	Settling Time	30 us
Shutdown	No Shutdown	SR - Slew Rate	0.3 V/us
Factory Pack Quantity	250	Subcategory	Amplifier ICs
Unit Weight	0.000240 oz