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參數資料
| 型號： | DAC10NBC |
| 英文描述： | 10-Bit Digital-to-Analog Converter |
| 中文描述： | 10位數字到模擬轉換器 |
| 文件頁數： | 1/14頁 |
| 文件大小： | 262K |
| 代理商： | DAC10NBC |
TLH11437
DAC1054
Quad
10-Bit
Voltage-Output
Serial
DA
Converter
with
Readback
January 1995
DAC1054 Quad 10-Bit Voltage-Output
Serial DA Converter with Readback
General Description
The DAC1054 is a complete quad 10-bit voltage-output digi-
tal-to-analog converter that can operate on a single 5V sup-
ply It includes on-chip output amplifiers internal voltage ref-
erence and serial microprocessor interface By combining
in one package the reference amplifiers and conversion
circuitry for four DA converters the DAC1054 minimizes
wiring and parts count and is hence ideally suited for appli-
cations where cost and board space are of prime concern
The DAC1054 also has a data readback function which can
be used by the microprocessor to verify that the desired
input word has been properly latched into the DAC1054’s
data registers The data readback function simplifies the de-
sign and reduces the cost of systems which need to verify
data integrity
The logic comprises a MICROWIRETM-compatible serial in-
terface and control circuitry The interface allows the user to
write to any one of the input registers or to all four at once
The latching registers are double-buffered consisting of 4
separate input registers and 4 DAC registers Each DAC
register may be written to individually Double buffering al-
lows all 4 DAC outputs to be updated simultaneously or
individually
The four reference inputs allow the user to configure the
system to have a separate output voltage range for each
DAC The output voltage of each DAC can range between
03V and 28V and is a function of VBIAS VREF and the
input word
Features
Y
Single a5V supply operation
Y
MICROWIRE serial interface allows easy interface to
many popular microcontrollers including the COPSTM
and HPCTM families of microcontrollers
Y
Data readback capability
Y
Output data can be formatted to read back MSB or
LSB first
Y
Versatile logic allows selective or global update of the
DACs
Y
Power fail flag
Y
Output amplifiers can drive 2 kX load
Y
Synchronousasynchronous update of the DAC outputs
Key Specifications
Y
Guaranteed monotonic over temperature
Y
Integral linearity error
g
LSB max
Y
Output settling time
37 ms max
Y
Analog output voltage range
03V to 28V
Y
Supply voltage range
45V to 55V
Y
Clock frequency for write
10 MHz max
Y
Clock frequency for read back
5 MHz max
Y
Power dissipation (fCLK e 10 MHz)
100 mW max
Y
On-board reference
265V g2% max
Applications
Y
Automatic test equipment
Y
Industrial process controls
Y
Automotive controls and diagnostics
Y
Instrumentation
Connection Diagram
TLH11437 – 1
Top View
Ordering Information
Industrial (b40 C k TA k a85 C)
Package
DAC1054CIN
N24A Molded DIP
DAC1054CIWM
M24B Small Outline
Military (b55 C k TA k a125 C)
DAC1054CMJ883 or
J24A Ceramic DIP
5962-9466201MJA
COPSTM HPCTM and MICROWIRETM are trademarks of National Semiconductor Corporation
C1995 National Semiconductor Corporation
RRD-B30M75Printed in U S A
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