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INA310B

ACTIVE

-4-V to 110-V 1.3-MHz high-precision current-sense amplifier with comparator

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Data sheet

INA310B

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 Catalog 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 Gain error (%) 0.5 Gain error drift (±) (max) (ppm/°C) 20 Slew rate (V/µs) 2.5 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 Catalog 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 Gain error (%) 0.5 Gain error drift (±) (max) (ppm/°C) 20 Slew rate (V/µs) 2.5 Operating temperature range (°C) -40 to 125
VSSOP (DGK) 8 14.7 mm² 3 x 4.9
  • 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
  • On-board open-drain comparator
  • Internal comparator voltage reference: 0.6 V
  • Propagation delay time: 1 µs
  • Latching capability on comparator
  • Available gains:
    • INA310A1, INA310B1 : 20 V/V
    • INA310A2, INA310B2 : 50 V/V
    • INA310A3, INA310B3 : 100 V/V
    • INA310A4, INA310B4 : 200 V/V
    • INA310A5, INA310B5 : 500 V/V
  • Package options: VSSOP-8
  • 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
  • On-board open-drain comparator
  • Internal comparator voltage reference: 0.6 V
  • Propagation delay time: 1 µs
  • Latching capability on comparator
  • Available gains:
    • INA310A1, INA310B1 : 20 V/V
    • INA310A2, INA310B2 : 50 V/V
    • INA310A3, INA310B3 : 100 V/V
    • INA310A4, INA310B4 : 200 V/V
    • INA310A5, INA310B5 : 500 V/V
  • Package options: VSSOP-8

The INA310x 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 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 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 operates from a single 2.7 V to 20 V supply and draws 1.6 mA of supply current. The INA310x 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 is specified over an operating temperature range of −40°C to +125°C and is offered in a space-saving 8-pin VSSOP package.

The INA310x 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 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 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 operates from a single 2.7 V to 20 V supply and draws 1.6 mA of supply current. The INA310x 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 is specified over an operating temperature range of −40°C to +125°C and is offered in a space-saving 8-pin VSSOP package.
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* Data sheet INA310x –4 V to 110 V, 1.3 MHz, Ultra-Precise Current Sense Amplifier With Open-Drain Comparator and Reference datasheet PDF | HTML 21 Mar 2023
Application note Risks and Prevention of ESD, EOS, and Latch Up Events for Current Sense Amplifiers PDF | HTML 18 Nov 2024
Certificate INA310BEVM EU Declaration of Conformity (DoC) 03 May 2023

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