INA303A3IPWR

具有窗口比较器的 36V、双向、550kHz、4V/µs 高精度电流感应放大器 14-TSSOP -40 to 125

The INA302 and INA303 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 to overcurrent conditions. The INA303 comparators are configured to respond to both over- and undercurrent conditions in a windowed configuration. The device features an adjustable limit threshold range for each comparator set using an external limit-setting resistor. These current-shunt monitors can measure differential voltage signals on common-mode voltages 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 the latch is reset. The alert response time for comparator 1 is under 1 µs and the alert response for comparator 2 is set through an external capacitor ranging from 2 µs to 10 s.

This device operates from a single 2.7-V to 5.5-V supply, drawing a maximum supply current of 950 µA. The device is specified over the extended operating temperature range –40°C to +125°C, and is available in a 14-pin TSSOP package.