DC2261A-A Analog Devices

DEMO MANUAL DC2261A High Side Current Sense with Comparators and a 400mV Reference Description Demonstration circuit 2193A features the LT 6119, a available. The demonstration board includes circuitry to high side current sense amplifier with comparators and guarantee that the comparator resets on power up. The a 400mV reference. current sense gain and current fault limits are set by on board resistors. The default gain is set at 10V/A and the The demo board circuit amplifies the voltage across an comparators are set to trip at current thresholds of 50mA onboard current sense resistor, to provide a precision and 300mA. unipolar voltage output that is proportional to the sensed current. The board has two onboard comparators with latch- The key performance specifications are listed in the table ing outputs and an integrated 400mV reference that sets below. the threshold for the comparators. There are two versions Design files for this circuit board are available at of the board, A and B. The version determines the available DEMO MANUAL DC2261A Block Diagram LT6119-1 9 + V 100 3k 34V 6V SENSEHI 10 SENSELO 3k OUTA 1 + 8 V V + V V 100nA LE 2 + V INC2 7 UNDERCURRENT FLAG OUTC2 3 V 400mV + REFERENCE V OVERCURRENT FLAG OUTC1 4 INC1 6 V 5 LT6119-2 9 + V 100 3k 34V 6V SENSEHI 10 SENSELO 3k OUTA 1 + 8 V + V V V 100nA LE 2 + V INC2 7 OVERCURRENT FLAG OUTC2 3 V 400mV + REFERENCE V OVERCURRENT FLAG OUTC1 4 INC1 6 V 5 dc2261af 2 + + + +