DC1659A-B

DC1659A-B demonstration circuit features the LT®6109, a high-side current sense amplifier with two comparators and a 400mV reference. The demo board circuit amplifies the voltage across an on-board current sense resistor, to provide a precision unipolar voltage output that is proportional to the sensed current. The board has two on-board comparators with latching outputs and an integrated 400mV reference that sets the threshold for the comparators. The DC1659A-B (LT6109-2) has two inverting inputs available. The current sense gain and current fault limits are set by on-board resistors. The gain is set at 100V/V and the comparators are set to trip at current thresholds of 50mA and 300mA.

• Input voltage range from 2.7V to 60V
• 1V measured output signal (ILOAD = 100mA), 100μA measured output current (VIOUT = 1V)
• 800μA quiescent current (VIN = 12V)