ADG508A データシートの表示（PDF） - Analog Devices
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ADG508A Datasheet PDF : 16 Pages
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ADG508A/ADG509A
SINGLE-SUPPLY OCTAL DAC APPLICATION
The following circuit shows the ADG508A connected as a demulti-
plexer to provide eight separate, digitally programmable voltages
(0 V to 10 V) from the AD7245A. The AD7245A is a complete
12-bit, voltage output DAC with output amplifier and Zener
voltage reference on a monolithic CMOS chip.
15V
The entire system operates from a single 15 V power supply.
The ADG508A is ideally suited for the application because it
has both low charge injection and IS (OFF) leakage current.
15V
10Ω
0.1µF
VDD
DB11
RFB
DB0
VOUT
AD7245A
CS
WR
LDAC
ROFS
VSS
DGND
CLR
AGND
REF OUT
EN VDD
S1
D
ADG508A
0.01µF
GND
VSS
S8
A0 A1 A2
0.01µF
15V
VOUT1
1/4 TLC274
15V
VOUT8
1/4 TLC274
+ 10µF
Figure 23. ADG508A in a Single-Supply Octal DAC Circuit
Rev. D | Page 13 of 16
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