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Analog Devices Semiconductor Electronic Components Datasheet

ADG725 Datasheet

16-/32- Channel/ Serially Controlled 4 1.8 V to 5.5 V/ 2.5 V/ Analog Multiplexers

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PRELIMINARY TECHNICAL DATA
= 16-/32- Channel, Serially Controlled 4
1.8 V to 5.5 V, ±2.5 V, Analog Multiplexers
Preliminary Technical Data
ADG725/ADG731
FEATURES
3-Wire SPI Serial Interface
1.8 V to 5.5 V Single Supply
±2.5 V Dual Supply Operation
4 On Resistance
0.5 On Resistance Flatness
7mm x 7mm 48 lead Chip Scale Package (CSP)
or 48 lead TQFP package.
Rail to Rail Operation
Power On Reset
Fast Switching Times
Single 32 to 1 Channel Multiplexer
Dual/Differential 16 to 1 Channel Multiplexer
TTL/CMOS Compatible Inputs
For Functionally Equivalent devices with Parallel Interface
See ADG726/ADG732
S1
S32
FUNCTIONAL BLOCK DIAGRAMS
ADG731
INPUT SHIFT
REGISTER
S1A
S16A
D
S1B
S16B
ADG725
INPUT SHIFT
REGISTER
DA
DB
APPLICATIONS
Optical Applications
Data Acquisition Systems
Communication Systems
Relay replacement
Audio and Video Switching
Battery Powered Systems
Medical Instrumentation
Automatic Test Equipment
GENERAL DESCRIPTION
The ADG725/ADG731 are monolithic CMOS 32
channel/dual 16 channel analog multiplexers with a
serially controlled 3-wire interface. The ADG732 switches
one of thirty-two inputs (S1-S32) to a common output, D.
The ADG725 can be configured as a dual mux switching
one of sixteen inputs to one output or a differential mux
switching one of sixteen inputs to a differential output.
These mulitplexers utilize a 3-wire serial interface that is
compatible with SPITM, QSPITM, MICROWIRETM and
some DSP interface standards. On power-up, the internal
shift register contains all zeros and all switch are in the
OFF state.
These multiplexers are designed on an enhanced submi-
cron process that provides low power dissipation yet gives
high switching speed, very low on resistance and leakage
currents. They operate from single supply of 1.8V to 5.5V
and ±2.5 V dual supply, making them ideally suited to a
variety of applications. On resistance is in the region of a
few Ohms and is closely matched between switches and
very flat over the full signal range. These parts can operate
equally well as either Multiplexers or De-Multiplexers
SCLK DIN SYNC
SCLK DIN SYNC
and have an input signal range which extends to the sup-
plies. In the OFF condition, signal levels up to the
supplies are blocked. All channels exhibit break before
make switching action preventing momentary shorting
when switching channels.
They are available in either 48 lead CSP or TQFP
package.
PRODUCT HIGHLIGHTS
1. 3-Wire Serial Interface.
2. +1.8 V to +5.5 V Single or ±2.5 V Dual Supply
operation. These parts are specified and guaranteed
with +5 V ±10%, +3 V ±10% single supply and
±2.5 V ±10% dual supply rails.
3. On Resistance of 4 .
4. Guaranteed Break-Before-Make Switching Action.
5. 7mm x 7mm 48 lead Chip Scale Package (CSP)
or 48 lead TQFP package.
REV. PrD May 2002
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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
www.analog.com
Fax: 781/326-8703
Analog Devices, Inc., 2002


Analog Devices Semiconductor Electronic Components Datasheet

ADG725 Datasheet

16-/32- Channel/ Serially Controlled 4 1.8 V to 5.5 V/ 2.5 V/ Analog Multiplexers

No Preview Available !

PRELIMINARY TECHNICAL DATA
ADG725/ADG731–SPECIFICATIONS1
(VDD = 5V ± 10%, VSS = 0V, GND = 0 V, unless otherwise noted)
Parameter
ANALOG SWITCH
Analog Signal Range
On-Resistance (RON)
On-Resistance Match Between
Channels (RON)
On-Resistance Flatness (RFLAT(ON))
LEAKAGE CURRENTS
Source OFF Leakage IS (OFF)
Drain OFF Leakage ID (OFF)
ADG725
ADG731
Channel ON Leakage ID, IS (ON)
ADG725
ADG726
DIGITAL INPUTS
Input High Voltage, VINH
Input Low Voltage, VINL
Input Current
IINL or IINH
CIN, Digital Input Capacitance
DYNAMIC CHARACTERISTICS2
tTRANSITION
Break-Before-Make Time Delay, tD
Charge Injection
B Version
–40°C
+25oC
to +85°C
0 V to VDD
4
5.5 6
0.3
0.8
0.5
1
±0.01
±0.25
±0.05
±0.5
±1
±0.05
±0.5
±1
±0.5
±2.5
±5
±2.5
±5
0.005
5
2.4
0.8
±0.1
40
60
30
1
±5
Off Isolation
-60
Channel to Channel Crosstalk
-60
-3 dB Bandwidth
ADG725
ADG731
CS (OFF)
CD (OFF)
ADG725
ADG731
CD, CS (ON)
ADG725
ADG731
POWER REQUIREMENTS
IDD
34
18
13
180
360
200
400
10
NOTES
1Temperature range is as follows: B Version: –40°C to +85°C.
2Guaranteed by design, not subject to production test.
Specifications subject to change without notice.
20
Units
Test Conditions/Comments
V
typ
max
typ
max
typ
max
nA typ
nA max
nA typ
nA max
nA max
nA typ
nA max
nA max
VS = 0 V to VDD, IDS = 10 mA;
Test Circuit 1
VS = 0 V to VDD , IDS = 10 mA
VS = 0 V to VDD, IDS = 10 mA
VDD = 5.5 V
VD = 4.5 V/1 V, VS = 1 V/4.5 V;
Test Circuit 2
VD = 4.5 V/1 V, VS = 1 V/4.5 V;
Test Circuit 3
VD = VS = 1 V, or 4.5V;
Test Circuit 4
V min
V max
µA typ
µA max
pF typ
VIN = VINL or VINH
ns typ
ns max
ns typ
ns min
pC typ
dB typ
dB typ
RL = 300 , CL = 35 pF,Test Circuit 5;
VS1 = 3 V/0 V, VS32 = 0 V/3V
RL = 300 , CL = 35 pF;
VS = 3 V, Test Circuit 6
VS = 0 V, RS = 0 , CL = 1 nF;
Test Circuit 7
RL = 50 , CL = 5 pF, f = 100 kHz;
Test Circuit 8
RL = 50 , CL = 5 pF, f = 100 kHz;
Test Circuit 9
MHz typ RL = 50 , CL = 5 pF, Test Circuit 10
MHz typ
pF typ f = 1 MHz
pF typ
pF typ
f = 1 MHz
f = 1 MHz
pF typ
pF typ
µA typ
µA max
f = 1 MHz
f = 1 MHz
VDD = +5.5 V
Digital Inputs = 0 V or +5.5 V
–2– REV. PrD


Part Number ADG725
Description 16-/32- Channel/ Serially Controlled 4 1.8 V to 5.5 V/ 2.5 V/ Analog Multiplexers
Maker Analog Devices
Total Page 15 Pages
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