PRELIMINARY TECHNICAL DATA
16-/32- Channel, Serially Controlled 4 Ω
1.8 V to 5.5 V, 2.5 V, Analog Multiplexers
a
ADG725/ADG731
Preliminary Technical Data
3-Wire SPI Serial Interface
1.8 V to 5.5 V Single Supply
2.5 V Dual Supply Operation
4 Ω On Resistance
FEATURES
FUNCTIONAL BLOCK DIAGRAMS
ADG731
ADG725
S1
S1A
0.5 Ω On Resistance Flatness
7mm x 7mm 48 lead Chip Scale Package (CSP)
or 48 lead TQFP package.
DA
S16A
Rail to Rail Operation
D
Power On Reset
Fast Switching Times
S1B
Single 32 to 1 Channel Multiplexer
Dual/Differential 16 to 1 Channel Multiplexer
TTL/CMOSCompatibleInputs
For Functionally Equivalent devices with Parallel Interface
See ADG726/ADG732
DB
S32
S16B
INPUT SHIFT
REGISTER
INPUT SHIFT
REGISTER
APPLICATIONS
SCLK
DIN
SCLK
DIN SYNC
SYNC
OpticalApplications
Data Acquisition Systems
CommunicationSystems
Relay replacement
Audio and Video Switching
Battery Powered Systems
MedicalInstrumentation
Automatic Test Equipment
GENERAL DESCRIPTION
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.
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.
They are available in either 48 lead CSP or TQFP
package.
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.
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 1ꢀ0, +3 V 1ꢀ0 single supply and
2.5 V 1ꢀ0 dual supply rails.
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
3. On Resistance of 4 Ω.
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