mx884 Clare, Inc., mx884 Datasheet - Page 3

• Manufacturer Part Number: mx884
• Description: High-side Current Monitor With 10-bit Serial Digital Output
• Manufacturer: Clare, Inc.

IXYS
MX884
Functional Description
The MX884 converts a small voltage developed across an external sense resistor (Rs) to a 10-bit digital
output. Pin IN connects to the 3V to 60V power input. The external current sense resistor connects
between pins IN and LOAD. The nominal A/D range is 100 mV V(IN)-V(LOAD) across Rs. The A/D least
significant bit typically equals 0.1 mV across Rs. Inputs CS and SCK are TTL-level compatible, 5.5V
maximum input voltage. Inputs can be driven from CMOS microcontrollers operating at supply voltages of
2.4 to 5.5V. Serial data output pin SDO is configured as open drain, maximum 5.5V external pull-up.
SCK is used internally to clock the successive approximation register of the A/D.
Serial Timing Diagram
MX884
3
12/20/06
Drawing No. 088423
www.claremicronix.com
Preliminary