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INA299-Q1

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AEC-Q100 qualified, -2V to 80V, bidirectional 650kHz precise current-sense amplifier

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Data sheet

INA299-Q1

ACTIVE
Data sheet Order now

Product details

Product type Analog output Common-mode voltage (max) (V) 80 Common-mode voltage (min) (V) -2 Input offset (±) (max) (µV) 150 Features Bidirectional, High precision, Low-side Capable Rating Automotive Voltage gain (V/V) 20, 50, 100 CMRR (min) (dB) 110 Bandwidth (kHz) 230, 450, 650 Supply voltage (max) (V) 12 Supply voltage (min) (V) 2.7 Iq (max) (mA) 0.6 Number of channels 1 Comparators (#) 0 Gain error (%) 0.15 Gain error drift (±) (max) (ppm/°C) 10 Slew rate (V/µs) 2.5 Operating temperature range (°C) -40 to 125
Product type Analog output Common-mode voltage (max) (V) 80 Common-mode voltage (min) (V) -2 Input offset (±) (max) (µV) 150 Features Bidirectional, High precision, Low-side Capable Rating Automotive Voltage gain (V/V) 20, 50, 100 CMRR (min) (dB) 110 Bandwidth (kHz) 230, 450, 650 Supply voltage (max) (V) 12 Supply voltage (min) (V) 2.7 Iq (max) (mA) 0.6 Number of channels 1 Comparators (#) 0 Gain error (%) 0.15 Gain error drift (±) (max) (ppm/°C) 10 Slew rate (V/µs) 2.5 Operating temperature range (°C) -40 to 125
SOT-23 (DBV) 6 8.12 mm² 2.9 x 2.8
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: −40°C to +125°C, TA
  • Functional Safety-Capable
  • Wide common-mode voltage:
    • Operational voltage: −2V to +80V
    • Survival voltage: −12V to +85V
  • Bidirectional operation
  • High small signal bandwidth: 650kHz (20V/V Gain)
  • Slew rate: 2.5V/µs
  • Step response settling time to 1%: 6.5µs
  • High CMRR: 120dB
  • Gain error (maximum) : ±0.25%, ±10ppm/°C drift
  • Offset voltage (maximum): ±150µV, ±0.5µV/°C drift
  • Operates from 2.7V to 12V supply
  • Operational current: 650µA
  • Available gains:
    • INA299A1-Q1: 20V/V
    • INA299A2-Q1: 50V/V
    • INA299A3-Q1: 100V/V
  • Package options: SOT23-6 (DBV)
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: −40°C to +125°C, TA
  • Functional Safety-Capable
  • Wide common-mode voltage:
    • Operational voltage: −2V to +80V
    • Survival voltage: −12V to +85V
  • Bidirectional operation
  • High small signal bandwidth: 650kHz (20V/V Gain)
  • Slew rate: 2.5V/µs
  • Step response settling time to 1%: 6.5µs
  • High CMRR: 120dB
  • Gain error (maximum) : ±0.25%, ±10ppm/°C drift
  • Offset voltage (maximum): ±150µV, ±0.5µV/°C drift
  • Operates from 2.7V to 12V supply
  • Operational current: 650µA
  • Available gains:
    • INA299A1-Q1: 20V/V
    • INA299A2-Q1: 50V/V
    • INA299A3-Q1: 100V/V
  • Package options: SOT23-6 (DBV)

The INA299-Q1 is a precise, bidirectional current sense amplifier that can measure voltage drops across shunt resistors over a wide common-mode range from –2V to 80V, independent of the supply voltage. The high-precision current measurement is achieved through a combination of low offset voltage (±150µV, maximum), small gain error (±0.25%, maximum) and a high DC CMRR (typical 120dB). The INA299-Q1 is not only designed for high voltage, bidirectional DC current measurements, but also for high-speed applications (such as transient detection and fast overcurrent protection) with a high signal bandwidth of 650kHz and fast settling time.

The INA299-Q1 operates from a single 2.7V to 12V supply, drawing 650µA of supply current. The INA299-Q1 is available in three gain options: 20V/V, 50V/V, 100V/V. Multiple gain options allow for optimization between available shunt resistor values and wide output dynamic range requirements.

The INA299-Q1 is specified over operating temperature range of −40°C to +125°C and is offered in a 6-pin SOT-23 package.

The INA299-Q1 is a precise, bidirectional current sense amplifier that can measure voltage drops across shunt resistors over a wide common-mode range from –2V to 80V, independent of the supply voltage. The high-precision current measurement is achieved through a combination of low offset voltage (±150µV, maximum), small gain error (±0.25%, maximum) and a high DC CMRR (typical 120dB). The INA299-Q1 is not only designed for high voltage, bidirectional DC current measurements, but also for high-speed applications (such as transient detection and fast overcurrent protection) with a high signal bandwidth of 650kHz and fast settling time.

The INA299-Q1 operates from a single 2.7V to 12V supply, drawing 650µA of supply current. The INA299-Q1 is available in three gain options: 20V/V, 50V/V, 100V/V. Multiple gain options allow for optimization between available shunt resistor values and wide output dynamic range requirements.

The INA299-Q1 is specified over operating temperature range of −40°C to +125°C and is offered in a 6-pin SOT-23 package.
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* Data sheet INA299-Q1 AEC-Q100, -2V to 80V , Bi-directional, 650kHz, High-Precision Current Sense Amplifier datasheet PDF | HTML 29 Jul 2025
Functional safety information INA187-Q1 and INA299-Q1 Functional Safety FIT Rate, FMD and Pin FMA PDF | HTML 03 Jun 2025

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