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DAC8805Q

Description
14-Bit, Dual, Parallel Input, Multiplying Digital-to-Analog Converter
File Size480KB,25 Pages
ManufacturerBurr-Brown
Websitehttp://www.burr-brown.com/
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DAC8805Q Overview

14-Bit, Dual, Parallel Input, Multiplying Digital-to-Analog Converter

Burr Brown Products
from Texas Instruments
DA
C8
805
DAC8805
SBAS391A – DECEMBER 2006 – REVISED MAY 2007
14-Bit, Dual, Parallel Input, Multiplying
Digital-to-Analog Converter
FEATURES
±0.5LSB
DNL
±0.5LSB
INL
Low Noise: 12nV/√Hz
Low Power: I
DD
= 1µA per channel at 2.7V
2mA Full-Scale Current, with V
REF
= 10V
Settling Time: 0.5µs
14-Bit Monotonic
4-Quadrant Multiplying Reference Inputs
Reference Bandwidth: 10MHz
Reference Input:
±18V
Reference Dynamics: –105 THD
Midscale or Zero Scale Reset
Analog Power Supply: +2.7V to +5.5V
TSSOP-38 Package
Industry-Standard Pin Configuration
Pin Compatible with the 16-Bit
DAC8822
Temperature Range: –40°C to +125°C
DESCRIPTION
The DAC8805 dual, multiplying digital-to-analog
converter (DAC) is designed to operate from a single
2.7V to 5.5V supply.
The applied external reference input voltage V
REF
determines the full-scale output current. An internal
feedback resistor (R
FB
) provides temperature
tracking for the full-scale output when combined with
an external, current-to-voltage (I/V) precision
amplifier.
A RSTSEL pin allows system reset assertion (RS) to
force all registers to zero code when RSTSEL = '0',
or to mid-scale code when RSTSEL = '1'.
Additionally, an internal power-on reset forces all
registers to zero or mid-scale code at power-up,
depending on the state of the RSTSEL pin.
A
parallel
interface
offers
high-speed
communications. The DAC8805 is packaged in a
space-saving TSSOP-38 package and has an
industry-standard pinout. The device is specified
from –40°C to +125°C.
For a 16-bit, pin-compatible version, see the
DAC8822.
APPLICATIONS
Automatic Test Equipment
Instrumentation
Digitally Controlled Calibration
Industrial Control PLCs
DGND
D0
D13
WR
A0
A1
Input B
Register
Control
Logic
Parallel
Bus
Interface
Input A
Register
V
DD
R
1
A
R
COM
A
R
1
A
V
REF
A R
OFS
A
R
OFS
A
R
FB
A
R
FB
A
R
2
A
DAC A
Register
DAC A
I
OUT
A
AGNDA
DAC B
Register
DAC B
I
OUT
B
AGNDB
RS
LDAC
RSTSEL
Power-On
Reset
R
1
B
R
1
B
R
2
B
R
OFS
B
R
FB
B
R
COM
B
V
REF
B R
OFS
B
R
FB
B
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 © 2006–2007, Texas Instruments Incorporated

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