DAC7811_14 Datasheet, PDF (1/24 Pages) Texas Instruments – 12-Bit, Serial Input, Multiplying Digital-to-Analog Converter

BurrĆBrown Products
from Texas Instruments
DAC7811
DAC7811
SBAS337C – APRIL 2005 – REVISED JULY 2007
12-Bit, Serial Input, Multiplying
Digital-to-Analog Converter
FEATURES
• 2.7V to 5.5V Supply Operation
• 50MHz Serial Interface
• 10MHz Multiplying Bandwidth
• ±15V Reference Input
• Low Glitch Energy: 5nV-s
• Extended Temperature Range:
–40°C to +125°C
• 10-Lead MSOP Package
• 12-Bit Monotonic
• 4-Quadrant Multiplication
• Power-On Reset with Brownout Detection
• Daisy-Chain Mode
• 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 DAC7811 is a CMOS, 12-bit, current output
digital-to-analog converter (DAC). This device
operates from a 2.7V to 5.5V power supply, making it
suitable for battery-powered and many other
applications.
This DAC uses a double-buffered 3-wire serial
interface that is compatible with SPI™, QSPI™,
MICROWIRE™, and most DSP interface standards.
In addition, a serial data out pin (SDO) allows for
daisy-chaining when multiple devices are used. Data
readback allows the user to read the contents of the
DAC register via the SDO pin. On power-up, the
internal shift register and latches are filled with
zeroes and the DAC outputs are at zero scale.
The DAC7811 offers excellent 4-quadrant
multiplication characteristics, with large signal
multiplying bandwidth of 10MHz. The applied
external reference input voltage (V_REF) determines
the full-scale output current. An integrated feedback
resistor (R_FB) provides temperature tracking and
full-scale voltage output when combined with an
external current-to-voltage precision amplifier.
The DAC7811 is available in a 10-lead MSOP
package.
V_DD
V_REF
DAC7811
12-Bit
R-2R DAC
R
R_FB
I_OUT1
I_OUT2
Power-On
Reset
DAC Register
Input Latch
SYNC
SCLK
SDIN
Control Logic and
Input Shift Register
GND
SDO
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.
SPI, QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor.
All other 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