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參數資料
| 型號： | DAC1232LCJ |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | DAC |
| 英文描述： | 12-Bit, uP Compatible, Double-Buffered D to A Converters |
| 中文描述： | PARALLEL, 8 BITS INPUT LOADING, 1 us SETTLING TIME, 12-BIT DAC, CDIP20 |
| 封裝： | CERDIP-20 |
| 文件頁數： | 1/18頁 |
| 文件大?。?/td> | 361K |
| 代理商： | DAC1232LCJ |
TL/H/5690
M
1
P
February 1995
MICRO-DAC
TM
DAC1208/DAC1209/DAC1210/DAC1230/
DAC1231/DAC1232 12-Bit,
m
P 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 I/O 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 I
OUT1
and I
OUT2
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-DACs
TM
). 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 (1.4V
logic threshold)
Y
Works with
g
10V referenceDfull 4-quadrant
multiplication
Y
Operates stand-alone (without
m
P) 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
m
s
12 Bits
Y
Resolution
Y
Linearity (Guaranteed
over temperature)
10, 11, or 12 Bits of FS
Y
Gain Tempco
1.3 ppm/
§
C
20 mW
5 V
DC
to 15 V
DC
Y
Low Power Dissipation
Y
Single Power Supply
Typical Application
TL/H/5690–1
TRI-STATE
é
is a registered trademark of National Semiconductor Corp.
MICRO-DAC
TM
is a trademark of National Semiconductor Corp.
C
1995 National Semiconductor Corporation
RRD-B30M115/Printed in U. S. A.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| DAC1232LCJ/A+ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:12-Bit Digital-to-Analog Converter |
| DAC1232LCJ-1 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:12-Bit, uP Compatible, Double-Buffered D to A Converters |
| DAC1232LCN | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:DAC1231/DAC1232 12-Bit, mP Compatible,Double-Buffered D to A Converters |
| DAC1232LCWM | 制造商:Texas Instruments 功能描述: |
| DAC1232LIN | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:12-Bit, uP Compatible, Double-Buffered D to A Converters |
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