DIGITAL-TO-ANALOG CONVERTER. DAC7821 Datasheet

DAC7821 CONVERTER. Datasheet pdf. Equivalent

Part DAC7821
Description DIGITAL-TO-ANALOG CONVERTER
Feature BurrĆBrown Products from Texas Instruments DAC7821 DAC7821 SBAS365B – OCTOBER 2005 – REVISED JULY.
Manufacture Burr-Brown
Datasheet
Download DAC7821 Datasheet




DAC7821
BurrĆBrown Products
from Texas Instruments
DAC7821
DAC7821
SBAS365B – OCTOBER 2005 – REVISED JULY 2007
12-Bit, Parallel Input, Multiplying
Digital-to-Analog Converter
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.
VDD
VREF
DAC7821
Power-On
Reset
12-Bit
R-2R DAC
R
RFB
IOUT1
IOUT2
DAC Register
Input Latch
CS
Control
R/W
Logic
GND
Parallel Bus
DB0
DB11
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2005–2007, Texas Instruments Incorporated



DAC7821
DAC7821
SBAS365B – OCTOBER 2005 – REVISED JULY 2007
www.ti.com
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be
more susceptible to damage because very small parametric changes could cause the device not to meet its published
specifications.
PACKAGE/ORDERING INFORMATION
For the most current package and ordering information, see the Package Option Addendum at the end of this
document, or see the TI website at www.ti.com.
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range (unless otherwise noted)(1)
VDD to GND
Digital input voltage to GND
V(IOUT) to GND
Operating temperature range
Storage temperature range
Junction temperature (TJ max)
ESD Rating, HBM
ESD Rating, CDM
DAC7821
–0.3 to +7
–0.3 to VDD + 0.3
–0.3 to VDD + 0.3
–40 to +125
–65 to +150
+150
3000
1000
UNIT
V
V
V
°C
°C
°C
V
V
(1) Stresses above those listed under absolute maximum ratings may cause permanent damage to the device. Exposure to absolute
maximum conditions for extended periods may affect device reliability.
2
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