2.5V to 5.5V, 230A Dual Rail-to-Rail Voltage Output 10-Bit DAC with Parallel Interface in 24-lead TSSOP

The AD5332 / AD5333 / AD5342 / AD5343 are dual 8-,10-,and 12-bit DACs. They operate from a 2.5 V to 5.5 V supply consuming just 230 µA at 3 V, and feature a power-down pin, PD that further reduces the current to 80 nA. These devices incorporate an on-chip output buffer that can drive the output to both supply rails, while the AD5333 and AD5342 allow a choice of buffered or unbuffered reference input.

The AD5332 / AD5333 / AD5342 / AD5343 have a parallel interface. CS selects the device and data is loaded into the input registers on the rising edge of WR.

The GAIN pin on the AD5333 and AD5342 allows the output range to be set at 0 V to VREF or 0 V to 2 × VREF.

Input data to the DACs is double-buffered, allowing simultaneous update of multiple DACs in a system using the LDAC pin.

An asynchronous CLR input is also provided, which resets the contents of the Input Register and the DAC Register to all zeros. These devices also incorporate a power-on reset circuit that ensures that the DAC output powers on to 0 V and remains there until valid data is written to the device.

The AD5332 / AD5333 / AD5342 / AD5343 are available in Thin Shrink Small Outline Packages (TSSOP).

PRODUCT HIGHLIGHTS

* Available in a 24-lead TSSOP package

* Low power, single supply operation from 2.5 V to 5.5 V supply

* Consumes 0.69 mW at 3 V and 1.5 mW at 5 V

* On-chip ouput buffer can drive output to both supply rails

* Allows a choice of buffered/unbuffered reference input

* Programmable output range 0-VREF or 0-2VREF (via GAIN pin)

APPLICATIONS

* Portable Battery-Powered Instruments

* Digital Gain and Offset Adjustment

* Programmable Voltage and Current Sources

* Programmable Attenuators

* Industrial Process Control

* Dual 10-Bit DAC in 24-Lead TSSOP

* Low Power Operation: 230 μA @ 3 V, 300 μA @

5 V via PD Pin

* Power-Down to 80 nA @ 3 V, 200 nA @ 5 V

* 2.5 V to 5.5 V Power Supply

* Double-Buffered Input Logic

* Guaranteed Monotonic by Design Over All Codes

* Low Power Parallel Data Interface