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ADG508A Schematic ( PDF Datasheet ) - Analog Devices

Teilenummer ADG508A
Beschreibung CMOS 4/8 CHAANNEL ANALOG MULTIPLEXERS
Hersteller Analog Devices
Logo Analog Devices Logo 




Gesamt 16 Seiten
ADG508A Datasheet, Funktion
FEATURES
44 V supply maximum rating
VSS to VDD analog signal range
Single-/dual-supply specifications
Wide supply range: 10.8 V to 16.5 V
Extended plastic temperature range: −40°C to +85°C
Low power dissipation: 28 mW maximum
Low leakage: 20 pA typical
Available in 16-lead DIP/SOIC and 20-lead PLCC/LCC
packages
Superior alternative to
DG508A, HI-508
DG509A, HI-509
GENERAL DESCRIPTION
The ADG508A and ADG509A are CMOS monolithic analog
multiplexers with eight channels and dual four channels, respec-
tively. The ADG508A switches one of eight inputs to a common
output, depending on the state of three binary addresses and an
enable input. The ADG509A switches one of four differential
inputs to a common differential output, depending on the state
of two binary addresses and an enable input. Both devices have
TTL and 5 V CMOS logic-compatible digital inputs.
The ADG508A and ADG509A are designed on an enhanced
LC2MOS process that gives an increased signal capability of VSS
to VDD and enables operation over a wide range of supply voltages.
The devices can comfortably operate anywhere in the 10.8 V to
16.5 V single- or dual-supply range. These multiplexers also
feature high switching speeds and low RON.
CMOS 4-/8-Channel
Analog Multiplexers
ADG508A/ADG509A
FUNCTIONAL BLOCK DIAGRAMS
ADG508A
S1 D
S8
DECODER
A0 A1 A2 EN
Figure 1. ADG508A
ADG509A
S1A
S4A
S1B
S4B
DECODER
DA
DB
A0 A1 EN
Figure 2. ADG509A
PRODUCT HIGHLIGHTS
1. Single-/Dual-Supply Specifications with a Wide Tolerance.
The devices are specified in the 10.8 V to 16.5 V range for
both single and dual supplies.
2. Extended Signal Range. The enhanced LC2MOS processing
results in a high breakdown and an increased analog signal
range of VSS to VDD.
3. Break-Before-Make Switching. Switches are guaranteed
break-before-make so that input signals are protected
against momentary shorting.
4. Low Leakage. Leakage currents in the range of 20 pA make
these multiplexers suitable for high precision circuits.
Rev. D
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2009 Analog Devices, Inc. All rights reserved.






ADG508A Datasheet, Funktion
ADG508A/ADG509A
Parameter
POWER SUPPLY
IDD
Power Dissipation
ADG508A/
ADG509A
K Version
−40°C to
+25°C +85°C
ADG508A/
ADG509A
B Version
−40°C to
+25°C +85°C
ADG508A/
ADG509A
T Version
−55°C to
+25°C +125°C
Unit
Comments
0.6
1.5
10
25
0.6
1.5
10
25
0.6
1.5
10
25
mA typ
mA max
mW typ
mW max
VIN = VINL or VINH
1 Sample tested at 25°C to ensure compliance.
Rev. D | Page 6 of 16

6 Page









ADG508A pdf, datenblatt
ADG508A/ADG509A
3V ADDRESS
DRIVE (VIN)
0V VIN
50%
OUTPUT
tOPEN
50
2.4V
VDD
VSS
VDD
A2
A1
A0
VSS
S1
S2–S7
S8
ADG508A1 OUTPUT
EN D
GND
1k
5V
35pF
3V
0V 50%
90%
tON
(EN)
1SIMILAR CONNECTION FOR ADG509A.
Figure 20. Break-Before-Make Delay, tOPEN
VDD
VSS
ENABLE
DRIVE (VIN)
OUTPUT
10%
tOFF
(EN)
VIN
VDD
A2
A1
A0
VSS
S1
S2–S8
5V
ADG508A1
OUTPUT
EN D
50GND
1k
35pF
3V
VIN
0V
VO
QINJ = CL × ΔVO
ΔVO
1SIMILAR CONNECTION FOR ADG509A.
Figure 21. Enable Delay, tON (EN), tOFF (EN)
VDD
VSS
RS
VS
VIN
VDD
A0
VSS
A1
A2
ADG508A1
S1
EN
GND
50
D
CL
1nF
1SIMILAR CONNECTION FOR ADG509A.
Figure 22. Charge Injection
VO
Rev. D | Page 12 of 16

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