3 V/5 V, 4/8 Channel High
a
Performance Analog Multiplexers
ADG608/ADG609
FUNCTIONAL BLOCK DIAGRAMS
FEATURES
+3 V, +5 V, 65 V Power Supplies
ADG608 ADG609
V to V Analog Signal Range
SS DD
Low On Resistance (30 V max)
S1
S1A
Fast Switching Times
DA
S4A
t 75 ns max
ON
t 45 ns max
OFF
D
Low Power Dissipation (1.5 mW max)
Break-Before-Make Construction
S1B
ESD > 5000 V as per Military Standard 3015.7 DB
S8 S4B
TTL and CMOS Compatible Inputs
1 OF 4
1 OF 8
APPLICATIONS
DECODER DECODER
Automatic Test Equipment
Data Acquisition Systems
A0 A1 A2 EN A0 A1 EN
Communication Systems
Avionics and Military Systems
Microprocessor Controlled Analog Systems
The ability to operate from single +3 V, +5 V or 5 V bipolar
Medical Instrumentation
supplies makes the ADG608 and ADG609 perfect for use in
Battery Powered Instruments
battery operated instruments and with the new generation of
Remote Powered Equipment
DACs and ADCs from Analog Devices. The use of 5 V sup-
Compatible with 65 V DACs and ADCs such as
plies and reduced operating currents gives much lower power
AD7840/8, AD7870/1/2/4/5/6/8
dissipation than devices operating from 15 V supplies.
GENERAL DESCRIPTION
The ADG608 and ADG609 are monolithic CMOS analog mul-
PRODUCT HIGHLIGHTS
tiplexers comprising eight single channels and four differential
1. Extended Signal Range
channels respectively, fully specified for 5 V, +5 V and +3 V
The ADG608/ADG609 are fabricated on an enhanced
2
power supplies. The ADG608 switches one of eight inputs to a
LC MOS process giving an increased signal range which
common output as determined by the 3-bit binary address lines
extends to the supplies.
A0, A1 and A2. The ADG609 switches one of four differential
2. Low Power Dissipation
inputs to a common differential output as determined by the
2-bit binary address lines A0 and A1. An EN input on both de- 3. Low R
ON
vices is used to enable or disable the device. When disabled, all
4. Fast Switching Times
channels are switched OFF. All the address and enable inputs
5. Break-Before-Make Switching
are TTL compatible over the full specified operating tempera-
Switches are guaranteed break-before-make so that input
ture range, making the parts suitable for bus-controlled systems
signals are protected against momentary shorting.
such as data acquisition systems, process controls, avionics and
ATEs since the TTL compatible address inputs simplify the digital
6. Single/Dual Supply Operation
interface design and reduce the board space requirements.
2 ORDERING GUIDE
The ADG608/ADG609 are designed on an enhanced LC MOS
process that provides low power dissipation yet gives high
Model Temperature Range Package Option*
switching speed and low on resistance. Each channel conducts
ADG608BN 40C to +85C N-16
equally well in both directions when ON and has an input signal
ADG608BR 40C to +85C R-16A
range which extends to the supplies. In the OFF condition, sig-
ADG608BRU 40C to +85C RU-16
nal levels up to the supplies are blocked. All channels exhibit
ADG608TRU 55C to +125C RU-16
break-before-make switching action preventing momentary
shorting when switching channels. Inherent in the design is low
ADG609BN 40C to +85C N-16
charge injection for minimum transients when switching the
ADG609BR 40C to +85C R-16A
digital inputs.
ADG609BRU 40C to +85C RU-16
*N = Plastic DIP; RU = Thin Shrink Small Outline Package (TSSOP);
R = 0.15" Small Outline IC (SOIC).
REV. A
Information furnished by Analog Devices is believed to be accurate and Analog Devices, Inc., 1995
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices. Tel: 617/329-4700 Fax: 617/326-8703ADG608/ADG609SPECIFICATIONS
1
(V = +5 V 6 10%, V = 5 V 6 10%, GND = 0 V, unless otherwise noted)
DUAL SUPPLY DD SS
Parameter B Version T Version
+258C 40C to +258C 558C to Test Conditions/
+858C +1258C Units Comments
ANALOG SWITCH
Analog Signal Range V to V V to V V
SS DD SS DD
R 22 22 typ 3.5 V < V < +3.5 V, I = 1 mA;
ON S S
30 35 30 40 max V = +4.5 V, V = 4.5 V;
DD SS
Test Circuit 1
R 56 5 6 max 3 V < V < +3 V, I = 1 mA;
ON S DS
V = +5 V, V = 5 V
DD SS
R Match 2 3 2 3 max V = 0 V, I = 1 mA;
ON S DS
V = +5 V, V = 5 V
DD SS
LEAKAGE CURRENTS V = +5.5 V, V = 5.5 V
DD SS
Source OFF Leakage I (OFF) 0.05 0.05 nA typ V = 4.5 V, V = 74.5 V;
S D S
0.5 2 0.5 10 nA max Test Circuit 2
Drain OFF Leakage I (OFF) 0.05 0.05 nA typ V = 4.5 V, V = 74.5 V;
D D S
ADG608 0.5 2 0.5 10 nA max Test Circuit 3
ADG609 0.5 1 0.5 5 nA max
Channel ON Leakage I , I (ON) 0.05 0.05 nA typ V = V = 4.5 V;
D S S D
ADG608 0.5 3 0.5 20 nA max Test Circuit 4
ADG609 0.5 1.5 0.5 10 nA max
DIGITAL INPUTS
Input High Voltage, V 2.4 2.4 V min
INH
Input Low Voltage, V 0.8 0.8 V max
INL
Input Current
I or I 1 1 A max V = 0 or V
INL INH IN DD
C , Digital Input Capacitance 5 5 pF typ
IN
2
DYNAMIC CHARACTERISTICS
t 50 50 ns typ R = 300 , C = 35 pF;
TRANSITION L L
75 90 75 100 ns max V = 3.5 V, V = 73.5 V;
S1 S8
Test Circuit 5
t 10 10 ns min R = 300 , C = 35 pF;
OPEN L L
V = +3.5 V; Test Circuit 6
S
t (EN) 50 50 ns typ R = 300 , C = 35 pF;
ON L L
75 90 75 100 ns max V = +3.5 V; Test Circuit 7
S
t (EN) 30 30 ns typ R = 300 , C = 35 pF;
OFF L L
45 60 45 75 ns max V = +3.5 V; Test Circuit 7
S
Charge Injection 6 6 pC typ V = 0 V, R = 0 , C = 1 nF;
S S L
Test Circuit 8
OFF Isolation 85 85 dB typ R = 1 k, C = 15 pF, f = 100 kHz;
L L
V = 3 V rms; Test Circuit 9
S
Channel-to-Channel Crosstalk 85 85 dB typ R = 1 k, C = 15 pF, f = 100 kHz;
L L
Test Circuit 10
C (OFF) 9 9 pF typ
S
C (OFF)
D
ADG608 40 40 pF typ
ADG609 20 20 pF typ
C (ON)
D
ADG608 54 54 pF typ
ADG609 34 34 pF typ
POWER REQUIREMENTS
I 0.05 0.2 0.05 0.2 A typ V = 0 V or V
DD IN DD
0.2 2 0.2 2 A max
I 0.01 0.1 0.01 0.1 A typ
SS
0.1 1 0.1 1 A max
NOTES
1
Temperature ranges are as follows: B Version: 40C to +85C; T Version: 55C to +125C.
2
Guaranteed by design, not subject to production test.
Specifications subject to change without notice.
2 REV. A