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36V, bi-directional, 550kHz, 4V/µs, high-precision current sense amplifier w/ dual comparators

Availability: 4,743


Package | PIN: TSSOP (PW) | 14
Temp: Q (-40 to 125)
Package qty | Carrier: 90 | TUBE
Qty Price
1-99 $2.56
100-249 $2.24
250-999 $1.57
1,000+ $1.27


  • Wide common-mode input range: –0.1 V to +36 V
  • Dual comparator outputs:
    • INA302: Two independent overlimitalerts
    • INA303: Window comparator
    • Threshold levels set individually
    • Comparator 1 alert response: 1 µs
    • Comparator 2 adjustable delay: 2 µs to 10 s
    • Open-drain outputs with independent latch control modes
  • High accuracy amplifier:
    • Offset voltage: 30 µV (max, A3 version)
    • Offset voltage drift: 0.5 µV/°C (max)
    • Gain error: 0.15% (max, A3 version)
    • Gain error drift: 10 ppm/°C
  • Available amplifier gains:
    • INA302A1, INA303A1: 20 V/V
    • INA302A2, INA303A2: 50 V/V
    • INA302A3, INA303A3: 100 V/V

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Texas Instruments  INA302A1IPW

The INA302 and INA303(INA30x) devices feature a high common-mode, bidirectional,current-sensing amplifier and two high-speed comparators to detect out-of-range current conditions.The INA302 comparators are configured to detect and respond toovercurrent conditions. The INA303 comparators are configured torespond to both overcurrent and undercurrent conditions in a windowed configuration. These devicesfeature an adjustable limit threshold range for each comparator set using an external limit-settingresistor. These current-shunt monitors can measure differential voltage signals on common-modevoltages that can vary from –0.1 V up to +36 V, independent of the supply.

The open-drain alert outputs can be configured to operate in either a transparent mode(output status follows the input state), or in a latched mode (alert output is cleared when thelatch is reset). The alert response time for comparator 1 is under 1 µs, and the alert response forcomparator 2 is set through an external capacitor ranging from 2 µs to 10 s.

These devices operate from a single 2.7-V to 5.5-V supply, drawing a maximum supplycurrent of 950 µA. The devices are specified over the extended operating temperature range of –40°Cto +125°C, and are available in a 14-pin TSSOP package.