INA290-Q1 AEC-Q100, 2.7 to 110V, 800kHz, ultra-precise current sense amplifier in small (sc-70) package | TI.com

INA290-Q1
This product is prototype/experimental and has not been released to the market. Testing and final processes may not be complete. This product may be subject to further changes or possible discontinuation.
AEC-Q100, 2.7 to 110V, 800kHz, ultra-precise current sense amplifier in small (sc-70) package

 

Sample availability

Preproduction samples are available. Order now

Description

The INA290-Q1 is an ultra-precise current sense amplifier than can measure voltage drops across shunt resistors over a wide common-mode range from 2.7 V to 110 V. It is in a highly space-efficient SC-70 package with a PCB footprint of only 2.00 mm × 1.25 mm. The ultra-precise current measurement accuracy is achieved thanks to the combination of an ultra-low offset voltage of 25 µV (maximum), a small gain error of 0.25% (maximum), and a high DC CMRR of 160 dB (typical). The INA290-Q1 is not only designed for DC current measurement, but also for high-speed applications (like fast overcurrent protection, for example) with a high bandwidth of 800 kHz (at gain of 20 V/V) and an 85-dB AC CMRR (at 50 kHz).

The INA290-Q1 operates from a single 2.7-V to 20-V supply and draws a 350-µA supply current (typical). The INA290-Q1 is available with five gain options: 20 V/V, 50 V/V, 100 V/V, 200 V/V, and 500 V/V. The low offset of the zero-drift architecture enables current sensing with low ohmic shunts as specified over the extended operating temperature range (−40°C to +125°C).

Features

  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Wide common-mode voltage:
    • Operational voltage: 2.7 V to 110 V
    • Survival voltage: −20 V to +120 V
  • Excellent CMRR:
    • 160-dB DC
    • 85-dB AC at 50 kHz
  • Accuracy
    • Gain:
      • Gain error: 0.25% (maximum)
      • Gain drift: 10 ppm/°C (maximum)
    • Offset:
      • Offset voltage: ± 25 µV (maximum)
      • Offset drift: ±0.25 µV/°C (maximum)
  • Available gains:
    • INA290A1Q: 20 V/V
    • INA290A2Q: 50 V/V
    • INA290A3Q: 100 V/V
    • INA290A4Q: 200 V/V
    • INA290A5Q: 500 V/V
  • Bandwidth: 800 kHz
  • Slew rate: 2 V/µs
  • Quiescent current: 350 µA

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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 (#) Comparators (#) Rating Operating temperature range (C) Package Group Package size: mm2:W x L (PKG)
INA290-Q1 Order now 110     2.7     25     0.5     100
20
200
50
500    
0.25     10     140     800     20     2.7     0.6     1     0     Automotive     -40 to 125     SC70 | 5     5SC70: 4 mm2: 2.1 x 2 (SC70 | 5)