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FEATURES

· 2.5V to 5.5V Supply Operation

· Fast Parallel Interface:

17ns Write Cycle

· Update Rate of 20.4MSPS

· 10MHz Multiplying Bandwidth

· ±10V Reference Input

· Low Glitch Energy: 5nV-s

· Extended Temperature Range:

–40°C to +125°C

· 20-Lead TSSOP Packages

· 12-Bit Monotonic

· ±1LSB INL

· 4-Quadrant Multiplication

· Power-On Reset with Brownout Detection

· Readback Function

· Industry-Standard Pin Configuration

APPLICATIONS

· Portable Battery-Powered Instruments

· Waveform Generators

· Analog Processing

· Programmable Amplifiers and Attenuators

· Digitally-Controlled Calibration

· Programmable Filters and Oscillators

· Composite Video

· Ultrasound

DESCRIPTION

The DAC7821 is a CMOS 12-bit current output

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

operates from a single 2.5V to 5.5V power supply,

making it suitable for battery-powered and many other applications.

This DAC 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 DAC7821 offers excellent 4-quadrant

multiplication characteristics, with a 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 DAC7821 is available in a 20-lead TSSOP

package.