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INA310B-Q1

ACTIVE

AEC-Q100 -4-V to 110-V 1.3-MHz high precision current-sense amplifier with comparator and reference

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Data sheet

INA310B-Q1

ACTIVE
Data sheet Order now

Product details

Product type Analog output with integrated comparator 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) 0.1 Features Alert Function, High precision, Low-side Capable Rating Automotive 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 (#) 1 Slew rate (V/µs) 2.5 TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125
Product type Analog output with integrated comparator 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) 0.1 Features Alert Function, High precision, Low-side Capable Rating Automotive 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 (#) 1 Slew rate (V/µs) 2.5 TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125
VSSOP (DGK) 8 14.7 mm² 3 x 4.9
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: −40°C to +125°C, T A
  • Functional Safety-Capable
  • Wide common-mode voltage:
    • Operational voltage: −4 V to +110 V
    • Survival voltage: −20 V to +120 V
  • High signal bandwidth: 1.3 MHz
  • Slew rate: 2.5 V/µs
  • Excellent CMRR: 160 dB
  • Accuracy
    • Gain error (maximum)
      • Version A: 0.15%, 10 ppm/°C drift
      • Version B: 0.5%, 20 ppm/°C drift
    • Offset voltage (maximum)
      • Version A: ±20 µV, ±0.25 µV/°C drift
      • Version B: ±150 µV, ±1 µV/°C drift
  • Onboard open-drain comparator
  • Internal comparator voltage reference: 0.6 V
  • Propagation delay time: 1 µs
  • Latching capability on comparator
  • Available gains:
    • INA310A1 -Q1, INA310B1 -Q1 : 20 V/V
    • INA310A2 -Q1, INA310B2 -Q1 : 50 V/V
    • INA310A3 -Q1, INA310B3 -Q1 : 100 V/V
    • INA310A4 -Q1, INA310B4 -Q1 : 200 V/V
    • INA310A5 -Q1, INA310B5 -Q1 : 500 V/V
  • Package options: VSSOP-8
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: −40°C to +125°C, T A
  • Functional Safety-Capable
  • Wide common-mode voltage:
    • Operational voltage: −4 V to +110 V
    • Survival voltage: −20 V to +120 V
  • High signal bandwidth: 1.3 MHz
  • Slew rate: 2.5 V/µs
  • Excellent CMRR: 160 dB
  • Accuracy
    • Gain error (maximum)
      • Version A: 0.15%, 10 ppm/°C drift
      • Version B: 0.5%, 20 ppm/°C drift
    • Offset voltage (maximum)
      • Version A: ±20 µV, ±0.25 µV/°C drift
      • Version B: ±150 µV, ±1 µV/°C drift
  • Onboard open-drain comparator
  • Internal comparator voltage reference: 0.6 V
  • Propagation delay time: 1 µs
  • Latching capability on comparator
  • Available gains:
    • INA310A1 -Q1, INA310B1 -Q1 : 20 V/V
    • INA310A2 -Q1, INA310B2 -Q1 : 50 V/V
    • INA310A3 -Q1, INA310B3 -Q1 : 100 V/V
    • INA310A4 -Q1, INA310B4 -Q1 : 200 V/V
    • INA310A5 -Q1, INA310B5 -Q1 : 500 V/V
  • Package options: VSSOP-8

The INA310x-Q1 is an ultra-precise current sense amplifier that can measure voltage drops across shunt resistors over a wide common-mode range from –4 V to 110 V, independent of supply voltage with an integrated comparator. The high precision current measurement accuracy is achieved through a combination of low offset voltage (20 µV, maximum), small gain error (0.15%, maximum) and a high DC CMRR (160 dB, typical). The INA310x-Q1 has a high signal bandwidth of 1.3 MHz designed for high voltage DC current measurements and high-speed applications like fast overcurrent protection.

The INA310x-Q1 incorporates an open-drain comparator and internal reference that provides a 0.6 V threshold. An external resistive divider sets the current trip point. The comparator includes a latching capability that can be made transparent by grounding (or leaving open) the RESET pin.

The INA310x-Q1 operates from a single 2.7 V to 20 V supply and draws 1.6 mA of supply current. The INA310x-Q1 is available in five gain options: 20 V/V, 50 V/V, 100 V/V, 200 V/V, and 500 V/V. These gain options address a wide dynamic range of current-sensing applications.

The INA310x-Q1 is an ultra-precise current sense amplifier that can measure voltage drops across shunt resistors over a wide common-mode range from –4 V to 110 V, independent of supply voltage with an integrated comparator. The high precision current measurement accuracy is achieved through a combination of low offset voltage (20 µV, maximum), small gain error (0.15%, maximum) and a high DC CMRR (160 dB, typical). The INA310x-Q1 has a high signal bandwidth of 1.3 MHz designed for high voltage DC current measurements and high-speed applications like fast overcurrent protection.

The INA310x-Q1 incorporates an open-drain comparator and internal reference that provides a 0.6 V threshold. An external resistive divider sets the current trip point. The comparator includes a latching capability that can be made transparent by grounding (or leaving open) the RESET pin.

The INA310x-Q1 operates from a single 2.7 V to 20 V supply and draws 1.6 mA of supply current. The INA310x-Q1 is available in five gain options: 20 V/V, 50 V/V, 100 V/V, 200 V/V, and 500 V/V. These gain options address a wide dynamic range of current-sensing applications.
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Technical documentation

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* Data sheet INA310x-Q1 AEC-Q100, –4 V to 110 V, 1.3 MHz, Ultra-Precise Current Sense Amplifier With Open-Drain Comparator and Reference datasheet PDF | HTML 31 May 2023
Application note Risks and Prevention of ESD, EOS, and Latch Up Events for Current Sense Amplifiers PDF | HTML 18 Nov 2024
Functional safety information INA310-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA PDF | HTML 11 May 2023

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