The INA302-Q1 and INA303-Q1 (INA30x-Q1) devices feature a high common-mode, bidirectional, current-sensing
amplifier and two high-speed comparators to detect out-of-range current conditions.
The INA302-Q1 comparators are configured to
detect and respond to overcurrent conditions. The INA303-Q1 comparators are configured to respond to
both overcurrent and undercurrent conditions in a windowed configuration. These
devices feature 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. In addition,
these devices will survive with common-mode voltages as high as 40 V.
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.
These devices operate from a single
2.7-V to 5.5-V supply, drawing a maximum supply current of 950 µA. The devices are
specified over the extended operating temperature range of –40°C to +125°C, and are
available in a 14-pin TSSOP package.
The INA302-Q1 and INA303-Q1 (INA30x-Q1) devices feature a high common-mode, bidirectional, current-sensing
amplifier and two high-speed comparators to detect out-of-range current conditions.
The INA302-Q1 comparators are configured to
detect and respond to overcurrent conditions. The INA303-Q1 comparators are configured to respond to
both overcurrent and undercurrent conditions in a windowed configuration. These
devices feature 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. In addition,
these devices will survive with common-mode voltages as high as 40 V.
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.
These devices operate from a single
2.7-V to 5.5-V supply, drawing a maximum supply current of 950 µA. The devices are
specified over the extended operating temperature range of –40°C to +125°C, and are
available in a 14-pin TSSOP package.