DESCRIPTION
The LTC®1594/LTC1598 are micropower, 12-bit sampling A/D converters that feature 4- and 8-channel multiplexers, respectively. They typically draw only 320μA of supply current when converting and automatically power down to a typical supply current of 1nA between conversions. The LTC1594 is available in a 16-pin SO package and the LTC1598 is packaged in a 24-pin SSOP. Both operate on a 5V supply. The 12-bit, switched-capacitor, successive approximation ADCs include a sample-and-hold.

FEATURES
■ 12-Bit Resolution
■ Auto Shutdown to 1nA
■ Low Supply Current: 320μA Typ
■ Guaranteed ±3/4LSB Max DNL
■ Single Supply 5V Operation (3V Versions Available: LTC1594L/LTC1598L)
■ Multiplexer: 4-Channel MUX (LTC1594) 8-Channel MUX (LTC1598)
■ Separate MUX Output and ADC Input Pins
■ MUX and ADC May Be Controlled Separately
■ Sampling Rate: 16.8ksps
■ I/O Compatible with QSPI, SPI and MICROWIRETM, etc.
■ Small Package: 16-Pin Narrow SO (LTC1594) 24-Pin SSOP (LTC1598)

APPLICATIONS
■ Pen Screen Digitizing
■ Battery-Operated Systems
■ Remote Data Acquisition
■ Isolated Data Acquisition
■ Battery Monitoring
■ Temperature Measurement