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INA281B5QDBVRQ1 +BOM

INA281B5QDBVRQ1: Single 20V Automotive Current Sense Amp

Manufacturer:

Texas Instruments
Mfr.Part #:

INA281B5QDBVRQ1
Datasheet:

INA281B5QDBVRQ1 Datasheet (PDF)
Common-mode Voltage (max) (V):

110
Common-mode Voltage (min) (V):

-4
Input Offset (±) (max) (µV):

150, 200, 250, 300, 500
Input Offset Drift (±) (typ) (µV/°C):

0.07
EDA/CAD Models:

Request Free CAD Models for INA281B5QDBVRQ1

INA281B5QDBVRQ1 Information

General Description

The INA281-Q1 sets a new standard in current sense amplifiers, offering unparalleled precision and versatility. With its ability to measure voltage drops across shunt resistors over a wide common-mode range from –4 V to 110 V, this high-precision device can accurately capture recirculating currents in half-bridge applications, even with negative common-mode voltage. Its low offset voltage, minimal gain error and high DC CMRR ensure highly accurate current measurement, while its 1.3 MHz bandwidth and 65-dB AC CMRR at 50 kHz make it suitable for high-speed applications such as fast overcurrent protection. Operating from a single 2.7-V to 20-V supply and drawing just 1.5 mA of supply current, the INA281-Q1 offers flexibility with five gain options ranging from 20 V/V to 500 V/V, addressing a wide dynamic range for current-sensing applications. With a temperature range of −40 °C to +125 °C and a compact SOT-23 package, the INA281-Q1 is a reliable choice for demanding industrial and automotive applications

Key Features

Precision and accuracy ensured
Suitable for demanding applications
Wide operating temperature range

Specifications

Product type	Analog output	Common-mode voltage (max) (V)	110
Common-mode voltage (min) (V)	-4	Input offset (±) (max) (µV)	150, 200, 250, 300, 500
Input offset drift (±) (typ) (µV/°C)	0.07	Voltage gain (V/V)	20, 50, 100, 200, 500
CMRR (min) (dB)	120	Bandwidth (kHz)	900, 1000, 1300
Supply voltage (max) (V)	20	Supply voltage (min) (V)	2.7
Iq (max) (mA)	2.25	Number of channels	1
Comparators (#)	0	Gain error (%)	0.5
Gain error drift (±) (max) (ppm/°C)	20	Slew rate (V/µs)	2.5
Features	High precision, Low-side Capable	Rating	Automotive
TI functional safety category	Functional Safety-Capable	Operating temperature range (°C)	-40 to 125
Package/Case	SOT-23-5