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ADG739BRU-REEL

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
CMOS, Low Voltage, 3-Wire
Serially-Controlled, Matrix Switches
Data Sheet
ADG738/ADG739
Rev. A Document Feedback
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 ©2000–2012 Analog Devices, Inc. All rights reserved.
Technical Support www.analog.com
FEATURES
3-wire serial interface
2.7 V to 5.5 V single supply
2.5 Ω on resistance
0.75 Ω on-resistance flatness
100 pA leakage currents
Single 8-to-1 multiplexer ADG738
Dual 4-to-1 multiplexer ADG739
Power-on reset
TTL/CMOS-compatible
Qualified for automotive applications
APPLICATIONS
Data acquisition systems
Communication systems
Relay replacement
Audio and video switching
GENERAL DESCRIPTION
The ADG738 and ADG739 are CMOS analog matrix switches
with a serially-controlled 3-wire interface. The ADG738 is an
8-channel matrix switch, while the ADG739 is a dual 4-channel
matrix switch. On resistance is closely matched between switches
and very flat over the full signal range.
FUNCTIONAL BLOCK DIAGRAMS
Figure 1.
Figure 2.
The ADG738 and ADG739 utilize a 3-wire serial interface
that is compatible with SPI™, QSPI™, MICROWIRE®, and some
DSP interface standards. The output of the input shift register,
DOUT, enables a number of these parts to be daisy-chained.
On power-up, the internal input shift register contains all zeros
and all switches are in the off state.
Each switch conducts equally well in both directions when on,
making these parts suitable for both multiplexing and demulti-
plexing applications. As each switch is turned on or off by a
separate bit, these parts can also be configured as a type of
switch array, where any, all, or none of the eight switches may
be closed at any time. The input signal range extends to the
supply rails.
All channels exhibit break-before-make switching action,
preventing momentary shorting when switching channels.
The ADG738 and ADG739 are available in 16-lead TSSOP
packages.
PRODUCT HIGHLIGHTS
1. 3-Wire Serial Interface.
2. Single Supply Operation. The ADG738/ADG739 are fully
specified and guaranteed with 3 V and 5 V supply rails.
3. Low On Resistance, 2.5 Ω typical.
4. Any configuration of switches may be on or off at any
one time.
5. Guaranteed Break-Before-Make Switching Action.
6. Small 16-lead TSSOP Package.
S1
S8
SCLK
D
DIN
SYNC
ADG738
RESET
DOUT
INPUT SHIFT
REGISTER
10758-001
S1A
SCLK
DA
DIN
S4A
S1B
S4B
DB
ADG739
DOUT
SYNC
INPUT SHIFT
REGISTER
10758-002
ADG738/ADG739 Data Sheet
Rev. A | Page 2 of 20
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagrams ............................................................. 1
Product Highlights ........................................................................... 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Timing Characteristics ................................................................ 5
Absolute Maximum Ratings ............................................................ 6
ESD Caution .................................................................................. 6
Pin Configurations and Function Descriptions ........................... 7
Typical Performance Characteristics ............................................. 9
Test Circuits ..................................................................................... 12
Terminology .................................................................................... 14
Theory of Operation ...................................................................... 15
Power-On Reset .......................................................................... 15
Serial Interface ............................................................................ 15
Microprocessor Interfacing ....................................................... 15
ADSP-21xx to ADG738/ADG739 ........................................... 15
8051 Interface to ADG738/ADG739 ....................................... 16
MC68HC11 Interface to ADG738/ADG739 .......................... 16
Applications Information .............................................................. 17
Expand the Number of Selectable Serial Devices Using an
ADG739 ....................................................................................... 17
Daisy-Chaining Multiple ADG738s ........................................ 17
Outline Dimensions ....................................................................... 18
Ordering Guide .......................................................................... 18
Automotive Products ................................................................. 18
REVISION HISTORY
11/12—Rev. 0 to Rev. A
Updated Format .................................................................. Universal
Changes to Features Section............................................................ 1
Added W Version Specifications to Table 1 .................................. 3
Added W Version Specifications to Table 2 .................................. 4
Changes to Table 4 ............................................................................ 6
Changes to Figure 7, Figure 8, and Figure 11 ............................... 9
Changes to Figure 12 ...................................................................... 10
Deleted Figure 22 ............................................................................ 12
Updated Outline Dimensions ....................................................... 19
Changes to Ordering Guide .......................................................... 19
4/00—Revision 0: Initial Version
Data Sheet ADG738/ADG739
Rev. A | Page 3 of 20
SPECIFICATIONS
V
DD
= 5 V ± 10%, GND = 0 V, unless otherwise noted.
Table 1.
B Version W Version
Parameter 25°C −40°C to +85°C −40°C to +105°C Unit Test Conditions/Comments
ANALOG SWITCH
Analog Signal Range
0 V to V
DD
V
On Resistance (R
ON
) 2.5 Ω typ V
S
= 0 V to V
DD
, I
S
= 10 mA; see Figure 19
4.5 5 6 Ω max
On-Resistance Match Between
Channels (∆R
ON
)
0.4 Ω typ V
S
= 0 V to V
DD
, I
S
= 10 mA
0.8 1 Ω max
On-Resistance Flatness (R
FLAT(ON)
) 0.75 Ω typ V
S
= 0 V to V
DD
, I
S
= 10 mA
1.2 1.5 Ω max
LEAKAGE CURRENTS V
DD
= 5.5 V
Source Off Leakage I
S
(Off)
nA typ
V
D
= 4.5 V/1 V, V
S
= 1 V/4.5 V; see Figure 20
±0.3
±0.6
nA max
Drain Off Leakage I
D
(Off)
nA typ
V
D
= 4.5 V/1 V, V
S
= 1 V/4.5 V
±0.1 ±1 ±1.3 nA max
Channel On Leakage I
D
, I
S
(On) ±0.01 nA typ V
D
= V
S
= 1 V/4.5 V, see Figure 21
±0.1 ±1 ±1.3 nA max
DIGITAL INPUTS
Input High Voltage, V
INH
2.4 V min
Input Low Voltage, V
INL
0.8 V max
Input Current, I
INL
or I
INH
0.005 µA typ V
IN
= V
INL
or V
INH
±0.1
±0.1
µA max
C
IN
, Digital Input Capacitance 3 pF typ
DIGITAL OUTPUT
Output Low Voltage 0.4 max I
SINK
= 6 mA
C
OUT
, Digital Output Capacitance 4 pF typ
DYNAMIC CHARACTERISTICS
1
t
ON
20 ns typ R
L
= 300 Ω, C
L
= 35 pF, see Figure 22; V
S1
= 3 V
32 35 ns max
t
OFF
10 ns typ R
L
= 300 Ω, C
L
= 35 pF, see Figure 22; V
S1
= 3 V
17 20 ns max
Break-Before-Make Time Delay, t
D
9 ns typ R
L
= 300 Ω, C
L
= 35 pF;
1 1 ns min V
S1
= V
S8
= 3 V, see Figure 22
Charge Injection ±3 pC typ V
S
= 2.5 V, R
S
= 0 Ω, C
L
= 1 nF; see Figure 23
Off Isolation −55 dB typ R
L
= 50 Ω, C
L
= 5 pF, f = 10 MHz
−75 dB typ R
L
= 50 Ω, C
L
= 5 pF, f = 1 MHz; see Figure 25
Channel-to-Channel Crosstalk −55 dB typ R
L
= 50 Ω, C
L
= 5 pF, f = 10 MHz
−75 dB typ R
L
= 50 Ω, C
L
= 5 pF, f = 1 MHz; see Figure 24
−3 dB Bandwidth
ADG738 65 MHz typ R
L
= 50 Ω, C
L
= 5 pF, see Figure 25
ADG739 100 MHz typ
C
S
(Off) 13 pF typ
C
D
(Off)
ADG738
pF typ
ADG739 42 pF typ
C
D
, C
S
(On)
ADG738 96 pF typ
ADG739 48 pF typ
POWER REQUIREMENTS V
DD
= 5.5 V
I
DD
10 µA typ Digital Inputs = 0 V or 5.5 V
20 20 µA max
1
Guaranteed by design, not subject to production test.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

ADG739BRU-REEL

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Manufacturer:
Analog Devices Inc.
Description:
IC MUX/DEMUX DUAL 4X1 16TSSOP
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