ADG441 Analog Devices, ADG441 Datasheet

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ADG441

Manufacturer Part Number
ADG441
Description
LC2MOS Quad SPST Switches
Manufacturer
Analog Devices
Datasheet

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a
GENERAL DESCRIPTION
The ADG441, ADG442 and ADG444 are monolithic CMOS
devices comprising four independently selectable switches. They
are designed on an enhanced LC
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 ensuring good linearity and low distortion when switching
audio signals. High switching speed also makes the parts suit-
able 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 indepen-
dent 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 a logic high on
the appropriate control input. The ADG441 and ADG444
switches differ in that the ADG444 requires a 5 V logic power
supply which is applied to the V
ADG442 do not have a V
generated internally by an on-chip voltage generator.
REV. 0
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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
FEATURES
44 V Supply Maximum Ratings
V
Low On Resistance (< 70
Low R
Low R
Low Power Dissipation
Fast Switching Times
Low Leakage Currents ( 3 nA max)
Low Charge Injection (6 pC max)
Break-Before-Make Switching Action
Latch-Up Proof
Plug-In Upgrade for
Plug in Replacement for DG441/DG442/DG444
APPLICATIONS
Audio and Video Switching
Automatic Test Equipment
Precision Data Acquisition
Battery Powered Systems
Sample Hold Systems
Communication Systems
SS
t
t
DG201A/ADG201A, DG202A/ADG202A,
DG211/ADG211A
ON
OFF
to V
< 110 ns
< 60 ns
ON
ON
DD
Match (3
(9
Analog Signal Range
max)
max)
L
pin, the logic power supply being
L
)
2
pin. The ADG441 and
MOS process that provides
Each switch conducts equally well in both directions when ON
and has an input signal range that extends to the power sup-
plies. 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 low
charge injection for minimum transients when switching the
digital inputs.
PRODUCT HIGHLIGHTS
1. Extended Signal Range
2. Low Power Dissipation
3. Low R
4. Trench Isolation Guards Against Latch Up
5. Break-Before-Make Switching
6. Single Supply Operation
One Technology Way, P.O. Box 9106, Norwood. MA 02062-9106, U.S.A.
Tel: 617/329-4700
IN2
IN1
IN3
IN4
The ADG441/ADG442/ADG444 are fabricated on an en-
hanced LC
creased signal range that extends to the supply rails.
A dielectric trench separates the P and N channel transistors
thereby preventing latch up even under severe overvoltage
conditions.
This prevents channel shorting when the switches are config-
ured as a multiplexer.
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.
LC
ADG441/ADG442/ADG444
ON
ADG441
ADG444
2
FUNCTIONAL BLOCK DIAGRAMS
MOS Quad SPST Switches
2
MOS, trench-isolated process, giving an in-
SWITCHES SHOWN FOR A LOGIC "1" INPUT
S1
D1
S2
D2
S3
D3
S4
D4
IN2
IN1
IN3
IN4
ADG442
Fax: 617/326-8703
S1
D1
S2
D2
S3
D3
S4
D4

Related parts for ADG441

ADG441 Summary of contents

Page 1

... The ADG441, ADG442 and ADG444 contain four indepen- dent 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 a logic high on the appropriate control input ...

Page 2

... C (OFF (OFF (ON POWER REQUIREMENTS I DD ADG441/ADG442 ADG444 0.001 1 I 0.0001 (ADG444 Only) 0.001 L 1 NOTES 1 Temperature ranges are as follows: B Versions: – + Versions: – +125 C. 2 Guaranteed by design, not subject to production test. ...

Page 3

... Model ADG441BN Switch ADG441BR Condition ADG441TQ ON ADG442BN OFF ADG442BR ADG444BN ADG444BR N OTES 1 To order MIL-STD-883, Class B processed parts, add /883B to T grade part numbers Plastic DIP 0.15" Small Outline IC (SOIC Cerdip. –3– ADG441/ADG442/ADG444 Units Test Conditions/Comments ...

Page 4

... Although these devices feature proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality. ADG441/ADG442 PIN CONFIGURATION (DIP/SOIC) IN1 1 D1 ...

Page 5

... TRENCH ISOLATION In the ADG441, ADG442 and ADG444, an insulating oxide layer (trench) is placed between the NMOS and the PMOS transistors of each CMOS switch. Parasitic junctions, which oc- cur between the transistors in junction isolated switches, are eliminated, the result being a completely latch-up proof switch. ...

Page 6

... ADG441/ADG442/ADG444 100 –15 –10 – – Volts D S Figure Function Temperatures 0. +15V –15V + 0.01 I (ON) 0.00 D –0.01 –0.02 –15 –10 – – Volts S D Figure 5. Leakage Currents as a Function of V ...

Page 7

... V S Test Circuit 2. Off Leakage 3V 0 ADG441/ADG444 V OUT 35pF ADG442 V OUT Test Circuit 4. Switching Times –7– ADG441/ADG442/ADG444 OFF SUPPLY VOLTAGE – Volts I (ON Test Circuit 3. On Leakage ...

Page 8

... ADG441/ADG442/ADG444 +15V + GND SS –15V OUT INJ L OUT Test Circuit 5. Charge Injection +15V +5V 0 GND 0.1 F –15V Test Circuit 6. Off Isolation +15V +5V 0 IN1 ...

Page 9

... C to +85 C NOTES 1 To order MIL-STD-883, Class B processed parts, add /883B to T grade part numbers Plastic DIP 0.15" Small Outline IC (SOIC Cerdip. For outline information see Package Information section. REV Package Option N-16 R-16A Q-16 N-16 R-16A N-16 R-16A –9– ADG441/ADG442/ADG444 ...

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