adg509a Analog Devices, Inc., adg509a Datasheet - Page 12

• Manufacturer Part Number: adg509a
• Description: Cmos 4-channel Analog Multiplexer
• Manufacturer: Analog Devices, Inc.

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.
0.1µF
10Ω
DB11
DB0
CS
WR
LDAC
CLR
REF OUT
+
10µF
AD7245A
V
15V
DD
Figure 23. ADG508A in a Single-Supply Octal DAC Circuit
DGND
AGND
V
R
R
V
OUT
OFS
FB
SS
Rev. C | Page 12 of 16
D
GND
V
SS
A0
ADG508A
EN
A1
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 I
V
15V
DD
A2
S1
S8
0.01µF
0.01µF
15V
15V
1/4 TLC274
1/4 TLC274
V
V
S
OUT1
OUT8
(OFF) leakage current.