INA293-Q1 Automotive, 110 V high-voltage, high-bandwidth, unidirectional current sense amplifier | TI.com

INA293-Q1 (PREVIEW) Automotive, 110 V high-voltage, high-bandwidth, unidirectional current sense amplifier

 

Sample availability

Preproduction samples are available (PINA293AxQDBVRQ1). Request now

Description

The INA293-Q1 is a versatile, automotive, high-voltage, unidirectional, voltage-output, current-sense amplifier that senses voltage drops across external sense (shunt) resistors over a wide common-mode voltage range from –4 V to 110 V. The negative common-mode voltage allows the device to operate below ground, thus accommodating the precise measurement of a recirculating current in typical
h-bridge applications. The INA293-Q1 amplifier has a bandwidth of 1 MHz at gain of 20 V/V. The 1-MHz bandwidth in combination with a low offset of < 200 uV (max) provides fast settling response with accurate measurements in a large common-mode switching transients.

The INA293-Q1 operates from a single 2.7-V to 20-V supply, drawing 1.5 mA of supply current. The INA293-Q1 is available with five gain options: 20 V/V, 50 V/V, 100 V/V, 200 V/V, and 500 V/V. These gain options address wide dynamic current-sensing applications.

The INA293-Q1 is specified over the operating temperature range of −40°C to +125°C, and is offered in a space-saving SOT-23 package.

Features

  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Wide common-mode voltage:
    • Operational voltage: −4 V to +110 V
    • Survival voltage: −20 V to +116 V
  • Excellent CMRR
    • 160-dB dc CMRR
    • 85-dB ac CMRR at 50 kHz
  • Accuracy
    • Gain
      • Gain error: 0.2% (maximum)
      • Gain drift: 10 ppm/°C (maximum)
    • Offset
      • Offset voltage: ±200 µV (maximum)
      • Offset drift: ±1 µV/°C (maximum)
  • Available gains:
    • INA293A1-Q1, INA293B1-Q1: 20 V/V
    • INA293A2-Q1, INA293B2-Q1: 50 V/V
    • INA293A3-Q1, INA293B3-Q1: 100 V/V
    • INA293A4-Q1, INA293B4-Q1: 200 V/V
    • INA293A5-Q1, INA293B5-Q1: 500 V/V
  • Bandwidth: 1 MHz
  • Slew rate: 3 V/µs
  • Quiescent current: 1.5 mA

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INA293-Q1 Error Analysis guide
0.001m ≤ 
 mOhm ≤ 100m
0.0001 ≤ 
A
A ≤ 100 
2.7 ≤ 
V ≤ 20
-4 ≤ 
V ≤ 110
-40 ≤ 
C ≤ 125
X Scale:

Parametrics

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Part number Order Common mode voltage (Max) (V) Common mode voltage (Min) (V) Input offset (+/-) (Max) (uV) Input offset drift (+/-) (Typ) (uV/C) Gain (V/V) Gain error (%) Gain error drift (+/-) (Max) (ppm/°C) CMRR (Min) (dB) Bandwidth (kHz) Supply voltage (Max) (V) Supply voltage (Min) (V) Iq (Max) (mA) Number of channels (#) Features Rating Operating temperature range (C) Package Group Package size: mm2:W x L (PKG)
INA293-Q1 Order now 110     -4     150     0.05     100
20
200
50
500    
0.25     10     132     1000     20     2.7     2.5     1     Low-side Capable     Automotive     -40 to 125     SOT-23 | 5     5SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 5)