DAC8822_07 Datasheet, PDF (1/24 Pages) Burr-Brown (TI) – 16-Bit, Dual, Parallel Input, Multiplying Digital-to-Analog Converter

BurrĆBrown Products
from Texas Instruments
DAC8822
DAC8822
SBAS390A – DECEMBER 2006 – REVISED MARCH 2007
16-Bit, Dual, Parallel Input, Multiplying
Digital-to-Analog Converter
FEATURES
• ±0.5LSB DNL
• ±1LSB INL
• Low Noise: 12nV/√Hz
• Low Power Operation:
I_DD = 1µA per Channel at 2.7V
• 2mA Full-Scale Current, with V_REF = 10V
• Settling Time: 0.5µs
• 16-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 14-Bit DAC8805
• Temperature Range: –40°C to +125°C
APPLICATIONS
• Automatic Test Equipment
• Instrumentation
• Digitally Controlled Calibration
• Industrial Control PLCs
DGND V_DD
D0
DESCRIPTION
The DAC8822 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 midscale code when RSTSEL = '1'. Additionally,
an internal power-on reset forces all registers to zero
or midscale code at power-up, depending on the
state of the RSTSEL pin.
A parallel interface offers high-speed
communications. The DAC8822 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 14-bit, pin-compatible version, see the
DAC8805.
R₁A R_COMA V_REFA R_OFSA
R₁A
R₂A
R_OFSA
R_FBA
R_FBA
D15
WR
A0
A1
RS
LDAC
RSTSEL
Parallel
Bus
Interface
Input A
Register
Input B
Register
Control
Logic
Power-On
Reset
DAC A
Register
DAC B
Register
R₁B
R₂B
DAC A
DAC B
R_OFSB R_FBB
I_OUTA
AGNDA
I_OUTB
AGNDB
R₁B R_COMB V_REFB R_OFSB
R_FBB
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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