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ADG707 Schematic ( PDF Datasheet ) - Analog Devices

Teilenummer ADG707
Beschreibung CMOS/ 2.5ohm Low-Voltage/ 8-/16-Channel Multiplexers
Hersteller Analog Devices
Logo Analog Devices Logo 




Gesamt 11 Seiten
ADG707 Datasheet, Funktion
a
CMOS, 2.5 Low-Voltage,
8-/16-Channel Multiplexers
ADG706/ADG707
FEATURES
1.8 V to 5.5 V Single Supply
؎3 V Dual Supply
2.5 On Resistance
0.5 On-Resistance Flatness
100 pA Leakage Currents
40 ns Switching Times
Single 16-to-1 Multiplexer ADG706
Differential 8-to-1 Multiplexer ADG707
28-Lead TSSOP Package
Low-Power Consumption
TTL/CMOS-Compatible Inputs
APPLICATIONS
Data Acquisition Systems
Communication Systems
Relay Replacement
Audio and Video Switching
Battery-Powered Systems
FUNCTIONAL BLOCK DIAGRAMS
ADG706
S1
ADG707
S1A
S8A
DA
D
S1B
DB
S16 S8B
1-OF-16
DECODER
1-OF-8
DECODER
A0 A1 A2 A3 EN
A0 A1 A2 EN
GENERAL DESCRIPTION
The ADG706 and ADG707 are low-voltage, CMOS analog
multiplexers comprising 16 single channels and eight differential
channels respectively. The ADG706 switches one of 16 inputs
(S1–S16) to a common output, D, as determined by the 4-bit
binary address lines A0, A1, A2, and A3. The ADG707 switches
one of eight differential inputs to a common differential output as
determined by the 3-bit binary address lines A0, A1, and A2.
An EN input on both devices is used to enable or disable the
device. When disabled, all channels are switched OFF.
Low-power consumption and operating supply range of 1.8 V to
5.5 V make the ADG706 and ADG707 ideal for battery-powered,
portable instruments. All channels exhibit break-before-make
switching action preventing momentary shorting when switch-
ing channels. These devices are also designed to operate from a
dual supply of ± 3 V.
These multiplexers are designed on an enhanced submicron
process that provides low-power dissipation yet gives high-
switching speed, very low on resistance and leakage currents.
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 demultiplexers and have an input signal range which extends
to the supplies.
The ADG706 and ADG707 are available in small 28-lead TSSOP
packages.
PRODUCT HIGHLIGHTS
1. Single/Dual Supply Operation. The ADG706 and ADG707
are fully specified and guaranteed with 3 V and 5 V single
supply and ± 3 V dual supply rails.
2. Low On Resistance (2.5 typical).
3. Low-Power Consumption (<0.01 µW).
4. Guaranteed Break-Before-Make Switching Action.
5. Small 28-Lead TSSOP Package.
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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700 World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 2000






ADG707 Datasheet, Funktion
ADG706/ADG707
Table I. ADG706 Truth Table
A3 A2 A1 A0 EN ON Switch
X X X X 0 NONE
0 0 0 0 11
0 0 0 1 12
0 0 1 0 13
0 0 1 1 14
0 1 0 0 15
0 1 0 1 16
0 1 1 0 17
0 1 1 1 18
1 0 0 0 19
1 0 0 1 1 10
1 0 1 0 1 11
1 0 1 1 1 12
1 1 0 0 1 13
1 1 0 1 1 14
1 1 1 0 1 15
1 1 1 1 1 16
X = Don’t Care.
Table II. ADG707 Truth Table
A2 A1 A0 EN ON Switch Pair
XXX0
0001
0011
0101
0111
1001
1011
1101
1111
NONE
1
2
3
4
5
6
7
8
X = Don’t Care.
VDD
VSS
IDD
ISS
GND
S
D
IN
VD (VS)
RON
RON
RFLAT(ON)
IS (OFF)
ID (OFF)
ID, IS (ON)
VINL
VINH
IINL(IINH)
CS (OFF)
TERMINOLOGY
Most Positive Power Supply Potential.
Most Negative Power Supply in a Dual Sup-
ply Application. In single supply applications,
this should be tied to ground at the device.
CD (OFF)
CD, CS (ON)
Positive Supply Current.
Negative Supply Current.
Ground (0 V) Reference.
Source Terminal. May be an input or output.
CIN
tTRANSITION
Drain Terminal. May be an input or output.
Logic Control Input.
tON (EN)
Analog Voltage on Terminals D, S.
Ohmic Resistance Between D and S.
tOFF (EN)
On Resistance Match Between any Two Chan-
nels, i.e., RONmax – RONmin.
Flatness is defined as the difference between
the maximum and minimum value of on
resistance as measured over the specified analog
signal range.
Source Leakage Current with the Switch
“OFF.”
Drain Leakage Current with the Switch “OFF.”
tOPEN
Charge
Injection
Off Isolation
Channel Leakage Current with the Switch
“ON.”
Maximum Input Voltage for Logic “0.”
Crosstalk
Minimum Input Voltage for Logic “1.”
Bandwidth
Input Current of the Digital Input.
“OFF” Switch Source Capacitance. Measured
with reference to ground.
On Response
Insertion
Loss
“OFF” Switch Drain Capacitance. Measured
with reference to ground.
“ON” Switch Capacitance. Measured with
reference to ground.
Digital Input Capacitance.
Delay Time Measured Between the 50% and
90% Points of the Digital Inputs and the Switch
“ON” Condition when Switching from One
Address State to Another.
Delay Time Between the 50% and 90% Points
of the EN Digital Input and the Switch “ON”
Condition.
Delay Time Between the 50% and 90% Points
of the EN Digital Input and the Switch “OFF”
Condition.
“OFF” Time Measured Between the 80%
Points of Both Switches when Switching from
One Address State to Another.
A Measure of the Glitch Impulse Transferred
from the Digital Input to the Analog Output
During Switching.
A Measure of Unwanted Signal Coupling
through an “OFF” Switch.
A Measure of Unwanted Signal which is
Coupled through from One Channel to
Another as a Result of Parasitic Capacitance.
The Frequency at which the Output Is
Attenuated by 3 dBs.
The Frequency Response of the “ON” Switch.
The Loss Due to the ON Resistance of the
Switch.
–6– REV. 0

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