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.