FEATURES

· ±1LSB INL

· 2.5V to 5.5V Supply Operation

· Fast Parallel Interface:

17ns Write Cycle

· Update Rate of 20.4MSPS

· 10MHz Multiplying Bandwidth

· ±15V Reference Input

· Extended Temperature Range:

–40°C to +125°C

· 40-Lead QFN

· 12-Bit Monotonic

· 4-Quadrant Multiplication

· Power-On Reset with Brownout Detection

· Readback Function

· Industry-Standard Pin Configuration

· Pin-Compatible with the AD5405

APPLICATIONS

· Portable Battery-Powered Instruments

· Waveform Generators

· Analog Processing

· Programmable Amplifiers and Attenuators

· Digitally-Controlled Calibration

· Programmable Filters and Oscillators

· Ultrasound

DESCRIPTION

The DAC7822 is a dual, CMOS, 12-bit, current

output digital-to-analog converter (DAC). This device

operates from a 2.5V to 5.5V power supply, making it

suitable for battery-powered and many other applications.

The DAC7822 operates with a fast parallel interface.

Data readback allows the user to read the contents

of the DAC register via the DB pins. On power-up,

the internal register and latches are filled with zeroes

and the DAC outputs are at zero scale.

The DAC7822 offers excellent 4-quadrant

multiplication characteristics, with large signal

multiplying bandwidth of 10MHz. The applied

external reference input voltage (VREF) determines

the full-scale output current. An integrated feedback

resistor (RFB) provides temperature tracking and

full-scale voltage output when combined with an

external current-to-voltage precision amplifier. The

DAC7822 also includes the resistors necessary for

4-quadrant multiplication and other configuration

modes.

The DAC7822 is available in a 40-lead QFN

package.