AD5174
FEATURES
Single-channel, 1024-position resolution 10 kΩ nominal resistance 50-times programmable (50-TP) wiper memory Rheostat mode temperature coefficient: 35 ppm/°C 2.7 V to 5.5 V single-supply operation ±2.5 V to ±2.75 V dual-supply operation for ac or bipolar operations SPI-patible interface Wiper setting and memory readback Power on refreshed from memory Resistor tolerance stored in memory Thin LFCSP 10-lead, 3 mm × 3 mm× 0.8 mm package pact MSOP, 10-lead, 3 mm × 4.9 mm × 1.1 mm package
FUNCTIONAL BLOCK DIAGRAM
POWER-ON RESET
SCLK SYNC DIN SDO SPI SERIAL INTERFACE 10
RDAC REGISTER
50-TP MEMORY BLOCK
APPLICATIONS
Mechanical rheostat replacements Op-amp: variable gain control Instrumentation: gain, offset adjustment Programmable voltage-to-current conversions Programmable filters, delays, time constants Programmable power supply Sensor calibration
EXT_CAP
Figure 1.
GENERAL DESCRIPTION
The AD5174 is a single-channel, 1024-position digital rheostat...
