User manual

page 78
Analog System Lab Kit PRO
appendix A
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 read back allows the user
to read the contents of the DAC register via the DB
pins. On power-up, the internal register and latches
are lled with zeroes and the DAC outputs are at
zeroscale.TheDAC7821oersexcellent4-quadrant
multiplication characteristics, with a large signal
multiplying and width 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amplier.The
DAC7821 is available in a 20-lead TSSOP package.
•2.5Vto5.5Vsupplyoperation
•FastParallelInterface:17nsWriteCycle
•UpdateRateof20.4MSPS
•10MHzMultiplyingBandwidth
•10Vinput
•LowGlitchEnergy:5nV-s
•ExtendedTemperatureRange:-40˚Cto+125˚C
•20-LeadTSSOPPackages
•12-BitMonotonic
•1LSBINL
•ReadbackFunction
•Power-OnResetwithBrownoutDetection
•PortableBattery-PoweredInstruments
•AnalogProcessing
•WaveformGenerators
•ProgrammableAmpliersandAttenuators
•DigitallyControlledCalibration
•ProgrammableFiltersandOscillators
•CompositeVideo
•Ultrasound
http://www.ti.com/lit/gpn/dac7821
12 Bit, Parallel, Multiplying DAC
A.3.1 Features
A.3.3 Description
A.3.4 Download Datasheet
A.3.2 Applications
DAC 7821
•Industry-StandardPinConguration
•4-QuadrantMultiplication
Figure A.3: DAC 7821 - Digital to Analog Converter