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DAC1210LCJ Scheda tecnica(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Il numero della parte DAC1210LCJ
Spiegazioni elettronici  12-Bit, uP Compatible, Double-Buffered D to A Converters
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Produttore elettronici  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
Logo NSC - National Semiconductor (TI)

DAC1210LCJ Scheda tecnica(HTML) 1 Page - National Semiconductor (TI)

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TLH5690
February 1995
MICRO-DAC
TM DAC1208DAC1209DAC1210DAC1230
DAC1231DAC1232 12-Bit mP Compatible
Double-Buffered D to A Converters
General Description
The DAC1208 and the DAC1230 series are 12-bit multiply-
ing D to A converters designed to interface directly with a
wide variety of microprocessors (8080 8048 8085 Z-80
etc) Double buffering input registers and associated con-
trol lines allow these DACs to appear as a two-byte ‘‘stack’’
in the system’s memory or IO space with no additional in-
terfacing logic required
The DAC1208 series provides all 12 input lines to allow sin-
gle buffering for maximum throughput when used with 16-bit
processors These input lines can also be externally config-
ured to permit an 8-bit data interface The DAC1230 series
can be used with an 8-bit data bus directly as it internally
formulates the 12-bit DAC data from its 8 input lines All of
these DACs accept left-justified data from the processor
The analog section is a precision silicon-chromium (Si-Cr)
R-2R ladder network and twelve CMOS current switches
An inverted R-2R ladder structure is used with the binary
weighted currents switched between the IOUT1 and IOUT2
maintaining a constant current in each ladder leg indepen-
dent of the switch state Special circuitry provides TTL logic
input voltage level compatibility
The DAC1208 series and DAC1230 series are the 12-bit
members of a family of microprocessor compatible DACs
(MICRO-DACsTM) For applications requiring other resolu-
tions the DAC1000 series for 10-bit and DAC0830 series
for 8-bit are available alternatives
Features
Y
Linearity specified with zero and full-scale adjust only
Y
Direct interface to all popular microprocessors
Y
Double-buffered single-buffered or flow through digital
data inputs
Y
Logic inputs which meet TTL voltage level specs (14V
logic threshold)
Y
Works with g10V referencefull 4-quadrant
multiplication
Y
Operates stand-alone (without mP) if desired
Y
All parts guaranteed 12-bit monotonic
Y
DAC1230 series is pin compatible with the DAC0830
series 8-bit MICRO-DACs
Key Specifications
Y
Current Settling Time
1 ms
Y
Resolution
12 Bits
Y
Linearity (Guaranteed
over temperature)
10 11 or 12 Bits of FS
Y
Gain Tempco
13 ppm C
Y
Low Power Dissipation
20 mW
Y
Single Power Supply
5 VDC to 15 VDC
Typical Application
TLH5690 – 1
TRI-STATE
is a registered trademark of National Semiconductor Corp
MICRO-DACTM is a trademark of National Semiconductor Corp
C1995 National Semiconductor Corporation
RRD-B30M115Printed in U S A


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