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INA2181A2IDGSR

Current Sense Amplifier 2 Circuit Rail-to-Rail 10-VSSOP

Manufacturer:

Texas Instruments
Mfr.Part #:

INA2181A2IDGSR
Datasheet:

INA2181A2IDGSR Datasheet (PDF)
Series:

INA2181
Number of Channels:

2 Channel
GBP - Gain Bandwidth Product:

210 kHz
Vcm - Common Mode Voltage:

12 V
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INA2181A2IDGSR General Description

The INA181, INA2181, and INA4181 (INAx181) current sense amplifiers are designed for cost-optimized applications. These devices are part of a family of bidirectional, current-sense amplifiers (also called current-shunt monitors) that sense voltage drops across current-sense resistors at common-mode voltages from –0.2 V to +26 V, independent of the supply voltage. The INAx181 family integrates a matched resistor gain network in four, fixed-gain device options: 20 V/V, 50 V/V, 100 V/V, or 200 V/V. This matched gain resistor network minimizes gain error and reduces the temperature drift.

These devices operate from a single 2.7-V to 5.5-V power supply. The single-channel INA181 draws a maximum supply current of 260 µA; whereas, the dual-channel INA2181 draws a maximum supply current of 500 µA, and the quad-channel INA4181 draws a maximum supply current of 900 µA.

The INA181 is available in a 6-pin, SOT-23 package. The INA2181 is available in 10-pin, VSSOP and WSON packages. The INA4181 is available in a 20-pin, TSSOP package. All device options are specified over the extended operating temperature range of –40°C to +125°C.

Key Features

Common-mode range (V_CM): –0.2 V to +26 V
High bandwidth: 350 kHz (A1 devices)
Offset voltage:
- ±150 µV (maximum) at V_CM = 0 V
- ±500 µV (maximum) at V_CM = 12 V
Output slew rate: 2 V/µs
Bidirectional current-sensing capability
Accuracy:
- ±1% gain error (maximum)
- 1-µV/°C offset drift (maximum)
Gain options:
- 20 V/V (A1 devices)
- 50 V/V (A2 devices)
- 100 V/V (A3 devices)
- 200 V/V (A4 devices)
Quiescent current: 260 µA maximum (INA181)

Specifications

Product Category	Current Sense Amplifiers	Series	INA2181
Number of Channels	2 Channel	GBP - Gain Bandwidth Product	210 kHz
Vcm - Common Mode Voltage	12 V	CMRR - Common Mode Rejection Ratio	100 dB
Ib - Input Bias Current	75 uA	Vos - Input Offset Voltage	100 uV
Supply Voltage - Max	5.5 V	Supply Voltage - Min	2.7 V
Operating Supply Current	500 uA	Gain Error	0.1 %
Minimum Operating Temperature	- 40 C	Maximum Operating Temperature	+ 125 C
Mounting Style	SMD/SMT	Amplifier Type	Current Sense Amplifier
Development Kit	INA2180-2181EVM	en - Input Voltage Noise Density	40 nV/sqrt Hz
Features	Bi-directional, Dual channel, Low-side Capable	Gain V/V	50 V/V
Input Type	Common Mode	Ios - Input Offset Current	50 nA
Moisture Sensitive	Yes	Product	Current Sense Amplifiers
Product Type	Current Sense Amplifiers	PSRR - Power Supply Rejection Ratio	8 uV/V
Shutdown	No Shutdown	SR - Slew Rate	2 V/us
Factory Pack Quantity	2500	Subcategory	Amplifier ICs
Unit Weight	0.001161 oz