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WM5628L

更新时间： 2024-11-17 22:13:51
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欧胜 - WOLFSON /
页数 文件大小 规格书
15页 372K
描述
3 & 5V Octal 8-Bit Voltage Output DAC with Serial Interface

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WM5628L, WM5628  
Production Data  
Sept. 1996 Rev 2  
3 & 5V Octal 8-Bit Voltage Output DAC  
with Serial Interface  
Description  
Features  
•
•
•
•
•
•
Eight 8-bit voltage output DAC's  
Three wire serial interface  
WM5628L and WM5628 are Octal 8-bit digital to analogue  
converters (DAC) controlled via a serial interface. Each  
DAC's output voltage range is programmable for either x1  
or x 2 its reference input voltage, allowing near rail to rail  
operation for the x 2 output range. High impedance  
buffered voltage reference inputs are provided for each  
group of four DACs. WM5628L operates on a single  
supply voltage of 3 V while WM5628 operates on 5 V.  
WM5628/L interfaces to all popular microcontrollers and  
microprocessors via a three wire serial interface with CMOS  
compatible, schmitt trigger, digital inputs. An 12 bit  
command word comprises 3 DAC select bits, an output  
range selection bit and 8-bits of data.  
Individual or all DAC outputs are changed using  
WM5628/L's double buffered DAC registers and the  
separate LOAD and LDAC inputs. DAC outputs are  
updated simultaneously by writing a complete set of new  
values and then pulsing the LDAC input.  
The DAC outputs are optimised for single supply  
operation and driving ground referenced loads.  
An internal power-on-reset function sets the DAC's input  
codes to zero at power up.  
Programmable x1 or x 2 output range.  
Power-on-reset sets outputs to zero  
Buffered voltage reference inputs  
Simultaneous DAC output update  
Key Specifications  
•
Single supply operation:  
WM5628L : 3 V  
WM5628  
: 5 V  
•
•
•
0 to 4 V output (x 2 output range) at 5 V VDD  
0 to 2.5 V output (x 2 output range) at 3 V VDD  
Guaranteed monotonic output  
Applications  
•
•
•
•
•
•
Programmable d.c. voltage sources  
Digitally controlled attenuator/amplifier  
Signal synthesis  
Mobile communications  
Automatic test equipment  
Process control  
Ideal in space critical applications WM5628/L is available  
in wide-bodied and DIP packages for commercial (0oC to  
70oC) and industrial (-40oC to 85oC) temperature ranges.  
Pin Configuration  
Ordering Information  
Top View  
DEVICE  
TEMP. RANGE  
PACKAGE  
16 pin N and DW packages  
WM5628CN  
WM5628CDW  
WM5628IN  
0oC to 70oC  
0oC to 70oC  
-40oC to 85oC 16 pin plastic DIP  
-40oC to 85oC 16 pin wide-bodied plastic SO  
0oC to 70oC  
0oC to 70oC  
16 pin plastic DIP  
16 pin wide-bodied plastic SO  
DACB  
DACA  
GND  
Da ta  
1
2
3
4
5
6
7
8
16 DACC  
15 DACD  
14 Re f1  
WM5628IDW  
WM5628LCN  
WM5628LCDW  
WM5628LIN  
WM5628LIDW  
13 LDAC  
12 Lo a d  
11 Re f2  
16 pin plastic DIP  
CLK  
16 pin wide-bodied plastic SO  
VDD  
-40oC to 85oC 16 pin plastic DIP  
-40oC to 85oC 16 pin wide-bodied plastic SO  
DACE  
DACF  
10 DACH  
9
DAC G  
Production Data data sheets contain  
final specifications current on publication  
date. Supply of products conforms to  
Wolfson Microelectronics standard terms  
and conditions  
© 1996 Wolfson Microelectronics  
Wolfson Microelectronics  
Lutton Court, Bernard Terrace, Edinburgh EH8 9NX, UK  
Tel: +44 (0) 131 667 9386  
email: admin@wolfson.co.uk  
www: http://www.wolfson.co.uk  
Fax: +44 (0) 131 667 5176  
1234567...15

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