GENERAL DESCRIPTION

The AD5301/AD5311/AD5321 are single 8-bit, 10-bit, and 12-bit buffered voltage-output DACs that operate from a single 2.5 V to 5.5 V supply, consuming 120 µA at 3 V. The on-chip output amplifier allows rail-to-rail output swing with a slew rate of 0.7 V/µs. It uses a 2-wire (I2C compatible) serial interface that operates at clock rates up to 400 kHz. Multiple devices can share the same bus.

FEATURES

AD5301: Buffered Voltage Output 8-Bit DAC

AD5311: Buffered Voltage Output 10-Bit DAC

AD5321: Buffered Voltage Output 12-Bit DAC

6-Lead SOT-23 and 8-Lead MSOP Packages

Micropower Operation: 120 μA @ 3 V

2-Wire (I2C® Compatible) Serial Interface

Data Readback Capability

2.5 V to 5.5 V Power Supply

Guaranteed Monotonic by Design over All Codes

Power-Down to 50 nA @ 3 V

Reference Derived from Power Supply

Power-On Reset to 0 V

On-Chip Rail-to-Rail Output Buffer Amplifier

3 Power-Down Functions

APPLICATIONS

Portable Battery-Powered Instruments

Digital Gain and Offset Adjustment

Programmable Voltage and Current Sources

Programmable Attenuators