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MOS Quad SPST Switches
ADG441/ADG442/ADG444
FEATURES
44 V supply maximum ratings
V
SS
to V
DD
analog signal range
Low on resistance (<70 Ω)
Low ∆R
ON
(9 Ω max)
Low R
ON
match (3 Ω max)
Low power dissipation
Fast switching times
t
ON
< 110 ns
t
OFF
< 60 ns
Low leakage currents (3 nA max)
Low charge injection (6 pC max)
Break-before-make switching action
Latch-up proof A grade
Plug-in upgrade for DG201A/ADG201A, DG202A/ADG202A,
DG211/ADG211A
Plug-in replacement for DG441/DG442/DG444
IN1
D1
S2
IN2
IN2
FUNCTIONAL BLOCK DIAGRAM
S1
IN1
D1
S2
S1
ADG441
ADG444
IN3
D2
S3
IN3
D3
S4
ADG442
D2
S3
D3
S4
IN4
05233-001
IN4
D4
D4
SWITCHES SHOWN FOR A LOGIC 1 INPUT
Figure 1.
differ in that the ADG444 requires a 5 V logic power supply
that is applied to the V
L
pin. The ADG441 and ADG442 do not
have a V
L
pin, the logic power supply is generated internally by
an on-chip voltage generator.
Each switch conducts equally well in both directions when ON
and has an input signal range that extends to the power
supplies. In the OFF condition, signal levels up to the supplies
are blocked. All switches exhibit break-before-make switching
action for use in multiplexer applications. Inherent in the
design is the low charge injection for minimum transients when
switching the digital inputs.
APPLICATIONS
Audio and video switching
Automatic test equipment
Precision data acquisition
Battery-powered systems
Sample-and-hold systems
Communication systems
GENERAL DESCRIPTION
The ADG441, ADG442, and ADG444 are monolithic CMOS
devices that comprise of four independently selectable switches.
They are designed on an enhanced LC
2
MOS process that
provides low power dissipation yet gives high switching speed
and low on resistance.
The on resistance profile is very flat over the full analog input
range, which ensures good linearity and low distortion when
switching audio signals. High switching speed also makes the
parts suitable for video signal switching. CMOS construction
ensures ultralow power dissipation, making the parts ideally
suited for portable and battery-powered instruments. The
ADG441, ADG442, and ADG444 contain four independent
SPST switches. Each switch of the ADG441 and ADG444 turns
on when a logic low is applied to the appropriate control input.
The ADG442 switches are turned on with logic high on the
appropriate control input. The ADG441 and ADG444 switches
PRODUCT HIGHLIGHTS
1. Extended signal range. The ADG441A/ADG442A/
ADG444A are fabricated on an enhanced LC
2
MOS, trench-
isolated process, giving an increased signal range that
extends to the supply rails.
2. Low power dissipation.
3. Low R
ON
.
4. Trench isolation guards against latch-up for A grade parts. A
dielectric trench separates the P and N channel transistors
thereby preventing latch-up even under severe overvoltage
conditions.
5. Break-before-make switching. This prevents channel
shorting when the switches are configured as a multiplexer.
6. Single-supply operation. For applications where the analog
signal is unipolar, the ADG441/ADG442/ADG444 can be
operated from a single-rail power supply. The parts are fully
specified with a single 12 V power supply.
Rev. A
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. Trademarks and
registered trademarks are the property of their respective owners.
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
©2005 Analog Devices, Inc. All rights reserved.
ADG441/ADG442/ADG444
TABLE OF CONTENTS
Specifications..................................................................................... 3
Dual Supply ................................................................................... 3
Single Supply ................................................................................. 4
Absolute Maximum Ratings............................................................ 5
ESD Caution.................................................................................. 5
Pin Configurations and Function Descriptions ........................... 6
Typical Performance Characteristics ............................................. 7
Test Circuits........................................................................................9
Terminology .................................................................................... 11
Trench Isolation.............................................................................. 12
Outline Dimensions ....................................................................... 13
Ordering Guide .......................................................................... 14
REVISION HISTORY
5/05—Data Sheet Changed from Rev. 0 to Rev. A
Changes to Format .............................................................Universal
Deleted CERDIP Package and T Grade ..........................Universal
Changes to Features and Product Highlights ............................... 1
Changes to Test Conditions in Table 2 .......................................... 4
Changes to Figure 11........................................................................ 8
Changes to Trench Isolation Section ........................................... 12
Updated Outline Dimensions ....................................................... 13
Changes to Ordering Guide .......................................................... 14
4/94–Revision 0: Initial Version
Rev. A | Page 2 of 16
ADG441/ADG442/ADG444
SPECIFICATIONS
DUAL SUPPLY
1
V
DD
= +15 V ± 10%, V
SS
= −15 V ± 10%, V
L
= +5 V ± 10% (ADG444), GND = 0 V, unless otherwise noted.
Table 1.
Parameter
ANALOG SWITCH
Analog Signal Range
R
ON
∆R
ON
R
ON
Match
LEAKAGE CURRENTS
Source OFF Leakage I
S
(OFF)
Drain OFF Leakage I
D
(OFF)
Channel ON Leakage I
D
, I
S
(ON)
DIGITAL INPUTS
Input High Voltage, V
INH
Input Low Voltage, V
INL
Input Current
I
INL
or I
INH
DYNAMIC CHARACTERISTICS
2
t
ON
t
OFF
t
OPEN
Charge Injection
OFF Isolation
Channel-to-Channel Crosstalk
C
S
(OFF)
C
D
(OFF)
C
D
, C
S
(ON)
POWER REQUIREMENTS
I
DD
ADG441/ADG442
ADG444
I
SS
I
L
(ADG444 Only)
+25°C
B Version
−40°C to +85°C
V
SS
to V
DD
40
70
85
4
9
1
3
Unit
V
Ω typ
Ω max
Ω typ
Ω max
Ω typ
Ω max
nA typ
±3
±3
±3
2.4
0.8
±0.00001
±0.5
85
110
45
60
30
1
6
60
100
4
4
16
nA max
nA typ
nA max
nA typ
nA max
V min
V max
µA typ
µA max
ns typ
ns max
ns typ
ns max
ns typ
pC typ
pC max
dB typ
dB typ
pF typ
pF typ
pF typ
V
IN
= V
INL
or V
INH
Test Conditions/Comments
V
D
= ±8.5 V, I
S
= −10 mA
V
DD
= +13.5 V, V
SS
= −13.5 V
−8.5 V ≤ V
D
≤ +8.5 V
V
D
= 0 V, I
S
= −10 mA
V
DD
= +16.5 V, V
SS
= −16.5 V
±0.01
±0.5
±0.01
±0.5
±0.08
±0.5
V
D
= ±15.5 V, V
S
=
∓15.5
V
See Figure 15
V
D
= ±15.5 V, V
S
=
∓15.5
V
See Figure 15
V
S
= V
D
= ±15.5 V
See Figure 16
170
80
R
L
= 1 kΩ, C
L
= 35 pF;
V
S
= ±10 V; see Figure 17
R
L
= 1 kΩ, C
L
= 35 pF;
V
S
= ±10 V; see Figure 17
R
L
= 1 kΩ, C
L
= 35 pF;
V
S
= 0 V, R
S
= 0 Ω, C
L
= 1 nF;
V
DD
= +15 V, V
SS
= –15 V; see Figure 18
R
L
= 50 Ω, C
L
= 5 pF; f = 1 MHz; see Figure 19
R
L
= 50 Ω, C
L
= 5 pF; f= 1 MHz; see Figure 20
f = 1 MHz
f = 1 MHz
f = 1 MHz
V
DD
= +16.5 V, V
SS
= −16.5 V
Digital Inputs = 0 V or 5 V
80
0.001
1
0.0001
1
0.001
1
2.5
2.5
2.5
µA max
µA typ
µA max
µA typ
µA max
µA typ
µA max
V
L
= 5.5 V
1
2
Temperature range is: B Version: −40°C to +85°C.
Guaranteed by design, not subject to production test.
Rev. A | Page 3 of 16
ADG441/ADG442/ADG444
SINGLE SUPPLY
1
V
DD
= +12 V ± 10%, V
SS
= 0 V, V
L
= +5 V ± 10% (ADG444), GND = 0 V, unless otherwise noted.
Table 2.
Parameter
ANALOG SWITCH
Analog Signal Range
R
ON
∆R
ON
R
ON
Match
LEAKAGE CURRENT
Source OFF Leakage I
S
(OFF)
Drain OFF Leakage I
D
(OFF)
Channel ON Leakage I
D
, I
S
(ON)
DIGITAL INPUTS
Input High Voltage, V
INH
Input Low Voltage, V
INL
Input Current
I
INL
or I
INH
DYNAMIC CHARACTERISTICS
2
t
ON
t
OFF
t
OPEN
Charge Injection
OFF Isolation
Channel-to-Channel Crosstalk
C
S
(OFF)
C
D
(OFF)
C
D
, C
S
(ON)
POWER REQUIREMENTS
I
DD
ADG441/ADG442
ADG444
I
L
(ADG444 Only)
+25°C
B Version
−40°C to +85°C
0 to V
DD
70
110
130
4
9
1
3
Unit
V
Ω typ
Ω max
Ω typ
Ω max
Ω typ
Ω max
nA typ
nA max
nA typ
nA max
nA typ
nA max
V min
V max
µA typ
µA max
ns typ
ns max
ns typ
ns max
ns typ
pC typ
pC max
dB typ
dB typ
pF typ
pF typ
pF typ
V
IN
= V
INL
or V
INH
Test Conditions/Comments
V
D
= +3 V, +8 V, I
S
= −5 mA
V
DD
= 10.8 V
3 V ≤ V
D
≤ 8 V
V
D
= +6 V, I
S
= −5 mA
V
DD
= 13.2 V
V
D
= 12.2 V/1 V, V
S
= 1 V/12.2 V
See Figure 15
V
D
= 12.2 V/1 V, V
S
= 1 V/12.2 V
See Figure 15
V
S
= V
D
= 12.2 V/1 V
Figure 16
±0.01
±0.5
±0.01
±0.5
±0.08
±0.5
±3
±3
±3
2.4
0.8
±0.00001
±0.5
105
150
40
60
50
2
6
60
100
7
10
16
220
100
R
L
= 1 kΩ, C
L
= 35 pF
V
S
= 8 V; Figure 17
R
L
= 1 kΩ, C
L
= 35 pF
V
S
= 8 V; Figure 17
R
L
= 1 kΩ, C
L
= 35 pF
V
S
= 6 V, R
S
= 0 Ω, C
L
= 1 nF
V
DD
= 12 V, V
SS
= 0 V; see Figure 18
R
L
= 50 Ω, C
L
= 5 pF, f = 1 MHz; see Figure 19
R
L
= 50 Ω, C
L
= 5 pF, f = 1 MHz; see Figure 20
f = 1 MHz
f = 1 MHz
f = 1 MHz
V
DD
= 13.2 V
Digital Inputs = 0 V or 5 V
80
0.001
1
0.001
1
2.5
2.5
µA max
µA typ
µA max
µA typ
µA max
V
L
= 5.5 V
1
2
Temperature range is: B Version: −40°C to +85°C.
Guaranteed by design, not subject to production test.
Rev. A | Page 4 of 16
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