GENERAL DESCRIPTION

The AD5320 1 is a single, 12-bit buffered voltage out digital-to-analog converter (DAC) that operates from a single 2.7 V to 5.5 V supply consuming 115 μA at 3 V. Its on-chip precision output amplifier allows rail-to-rail output swing to be achieved. The AD5320 utilizes a versatile 3-wire serial interface that operates at clock rates up to 30 MHz and is compatible with standard SPI®, QSPI™, MICROWIRE™ and digital signal processing (DSP) interface standards.

FEATURES

Single 12-bit DAC

6-lead SOT-23 and 8-lead MSOP packages

Micropower operation: 140 μA @ 5 V

Power-down to 200 nA @ 5 V, 50 nA @ 3 V

2.7 V to 5.5 V power supply

Guaranteed monotonic by design

Reference derived from power supply

Power-on reset to zero volts

Three power-down functions

Low power serial interface with Schmitt-triggered inputs

On-chip output buffer amplifier, rail-to-rail operation

SYNC interrupt facility

APPLICATIONS

Portable battery-powered instruments

Digital gain and offset adjustment

Programmable voltage and current sources

Programmable attenuators