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DAC8805
SBAS391A–DECEMBER 2006–REVISED MAY 2007
14-Bit, Dual, Parallel Input, Multiplying
Digital-to-Analog Converter
FEATURES
DESCRIPTION
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±0.5LSB DNL
The DAC8805 dual, multiplying digital-to-analog
converter (DAC) is designed to operate from a single
2.7V to 5.5V supply.
±0.5LSB INL
Low Noise: 12nV/√Hz
The applied external reference input voltage VREF
determines the full-scale output current. An internal
Low Power: IDD = 1µA per channel at 2.7V
2mA Full-Scale Current, with VREF = 10V
Settling Time: 0.5µs
feedback resistor (RFB
)
provides temperature
tracking for the full-scale output when combined with
an external, current-to-voltage (I/V) precision
amplifier.
14-Bit Monotonic
4-Quadrant Multiplying Reference Inputs
Reference Bandwidth: 10MHz
Reference Input: ±18V
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'.
Reference Dynamics: –105 THD
Midscale or Zero Scale Reset
Analog Power Supply: +2.7V to +5.5V
TSSOP-38 Package
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.
Industry-Standard Pin Configuration
Pin Compatible with the 16-Bit DAC8822
Temperature Range: –40°C to +125°C
For
DAC8822.
a 16-bit, pin-compatible version, see the
APPLICATIONS
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Automatic Test Equipment
Instrumentation
Digitally Controlled Calibration
Industrial Control PLCs
DGND
VDD
R1A RCOM
A
VREFA ROFS
A
RFBA
R1A
R2A
ROFSA
RFBA
D0
Input A
DAC A
Parallel
Bus
D13
DAC A
DAC B
IOUT
A
Register
Register
WR
A0
Interface
AGNDA
A1
Input B
DAC B
Register
Register
IOUTB
RS
LDAC
Control
Logic
AGNDB
R1B
R2B
ROFSB
RFBB
Power-On
Reset
RSTSEL
R1B
RCOMB
VREFB ROFS
B
RFBB
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