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ADG407 Schematic ( PDF Datasheet ) - Analog Devices

Teilenummer ADG407
Beschreibung LC2MOS 8-/16-Channel High Performance Analog Multiplexers
Hersteller Analog Devices
Logo Analog Devices Logo 




Gesamt 12 Seiten
ADG407 Datasheet, Funktion
a
LC2MOS 8-/16-Channel
High Performance Analog Multiplexers
ADG406/ADG407/ADG426
FEATURES
44 V Supply Maximum Ratings
VSS to VDD Analog Signal Range
Low On Resistance (80 max)
Low Power
Fast Switching
tON < 160 ns
tOFF < 150 ns
Break Before Make Switching Action
Plug-In Upgrade for
DG506A/ADG506A, DG507A/ADG507A,
DG526/ADG526A
ADG406/ADG407 are Plug-In Replacements for
DG406/DG407
APPLICATIONS
Audio and Video Routing
Automatic Test Equipment
Data Acquisition Systems
Battery Powered Systems
Sample Hold Systems
Communication Systems
Avionics
FUNCTIONAL BLOCK DIAGRAMS
ADG406
ADG407
S1 S1A
DA
S8A
D
S1B
DB
S16 S8B
1 OF 16
DECODER
1 OF 8
DECODER
A0 A1 A2 A3 EN
S1
A0 A1 A2 EN
ADG426
D
S16
DECODER/
WR LATCHES
A0 A1 A2 A3 EN RS
GENERAL DESCRIPTION
The ADG406, ADG407 and ADG426 are monolithic CMOS
analog multiplexers. The ADG406 and ADG426 switch one of
sixteen inputs to a common output as determined by the 4-bit
binary address lines A0, A1, A2 and A3. The ADG426 has on-
chip address and control latches that facilitate microprocessor
interfacing. The ADG407 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 all
devices is used to enable or disable the device. When disabled,
all channels are switched OFF.
The ADG406/ADG407/ADG426 are designed on an enhanced
LC2MOS process that provides low power dissipation yet gives
high switching speed and low on resistance. These features
make the parts suitable for high speed data acquisition systems
and audio signal switching. Low power dissipation makes the
parts suitable for battery powered systems. Each channel
conducts equally well in both directions when ON and has an
input signal range which extends to the supplies. 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. Inherent in the
design is low charge injection for minimum transients when
switching the digital inputs.
PRODUCT HIGHLIGHTS
1. Extended Signal Range
The ADG406/ADG407/ADG426 are fabricated on an
enhanced LC2MOS process giving an increased signal range
which extends to the supply rails
2. Low Power Dissipation
3. Low R
ON
4. Single/Dual Supply Operation
5. Single Supply Operation
For applications where the analog signal is unipolar, the
ADG406/ADG407/ADG426 can be operated from a single
rail power supply. The parts are fully specified with a single
+12 V power supply and will remain functional with single
supplies as low as +5 V.
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: 617/329-4700
Fax: 617/326-8703






ADG407 Datasheet, Funktion
ADG406/ADG407/ADG426
TIMING DIAGRAMS (ADG426)
3V
WR
0V
3V
A0, A1, A2, (A3)
EN
0V
50%
50%
tW
2V
tS
tH
0.8V
Figure 1.
Figure 1 shows the timing sequence for latching the switch
address and enable inputs. The latches are level sensitive;
therefore, while WR is held low, the latches are transparent and
the switches respond to the address and enable inputs. This
input data is latched on the rising edge of WR.
3V
RS
0V
V0
SWITCH
OUTPUT
0V
50%
50%
tRS
tOFF (RS)
0.8V0
Figure 2.
Figure 2 shows the Reset Pulse Width, tRS, and the Reset Turn
Off Time, tOFF (RS).
Note: All digital input signals rise and fall times are measured
from 10% to 90% of 3 V. t = t = 20 ns.
RF
TERMINOLOGY
VDD
VSS
GND
RON
RON Match
IS (OFF)
ID (OFF)
ID, IS (ON)
VD (VS)
CS (OFF)
CD (OFF)
CD, CS (ON)
CIN
tON (EN)
tOFF (EN)
tTRANSITION
tOPEN
VINL
VINH
IINL (IINH)
Crosstalk
Off Isolation
Charge
Injection
IDD
ISS
Most positive power supply potential.
Most negative power supply potential in dual
supplies. In single supply applications, it may
be connected to ground.
Ground (0 V) reference.
Ohmic resistance between D and S.
Difference between the RON of any two
channels.
Source leakage current when the switch is off.
Drain leakage current when the switch is off.
Channel leakage current when the switch
is on.
Analog voltage on terminals D, S.
Channel input capacitance for “OFF”
condition.
Channel output capacitance for “OFF”
condition.
“ON” switch capacitance.
Digital input capacitance.
Delay time between the 50% and 90%
points of the digital input and switch “ON”
condition.
Delay time between the 50% and 90%
points of the digital input and switch “OFF”
condition.
Delay time between the 50% and 90%
points of the digital inputs and the switch
“ON” condition when switching from one
address state to another.
“OFF” time measured between 80% points of
both switches when switching from one
address state to another.
Maximum input voltage for logic “0.”
Minimum input voltage for logic “1.”
Input current of the digital input.
A measure of unwanted signal which is
coupled through from one channel to another
as a result of parasitic capacitance.
A measure of unwanted signal coupling
through an “OFF” channel.
A measure of the glitch impulse
transferred from the digital input to the analog
output during switching.
Positive supply current.
Negative supply current.
–6– REV. 0

6 Page









ADG407 pdf, datenblatt
ADG406/ADG407/ADG426
VDD
2.4V
VDD
A3 S1
A2
S16
A1
ADG426*
A0
RS
EN
GND WR
D
VSS
VIN
VOUT
RL
1k
VSS
*SIMILAR CONNECTION FOR ADG406/407
Test Circuit 11. OFF Isolation
VDD
S16 VDD
S2 D
VIN S1
1kADG426*
A0
A1
A2
A3
2.4V
EN
RS GND WR VSS
VOUT
1k
VSS
*SIMILAR CONNECTION FOR ADG406/407
Test Circuit 12. Crosstalk
28
PIN 1
1
0.250
(6.35)
MAX
0.200 (5.05)
0.125 (3.18)
0.022 (0.558)
0.014 (0.356)
28-Pin Plastic (N-28)
OUTLINE DIMENSIONS
Dimensions shown in inches an (mm).
28-Pin PLCC (P-28A)
1.565 (39.70)
1.380 (35.10)
0.100
(2.54)
BSC
15
0.580 (14.73)
0.485 (12.32)
14
0.060 (1.52)
0.015 (0.38)
0.150
(3.81)
MIN
0.070 (1.77) SEATING
MAX
PLANE
0.625 (15.87)
0.600 (15.24)
0.195 (4.95)
0.125 (3.18)
0.015 (0.381)
0.008 (0.204)
0.048 (1.21)
0.042 (1.07)
0.050
(1.27)
BSC
0.048 (1.21)
0.042 (1.07)
0.056 (1.42)
0.042 (1.07)
4
5
PIN 1
IDENTIFIER
26
25
TOP VIEW
0.020
(0.50)
R
11
12
19
18
0.456 (11.58)
0.450 (11.43) SQ
0.495 (12.57)
0.485 (12.32) SQ
0.180 (4.57)
0.165 (4.19)
0.025 (0.63)
0.015 (0.38)
0.021 (0.53)
0.013 (0.33)
0.430 (10.92)
0.390 (9.91)
0.032 (0.81)
0.026 (0.66)
0.040 (1.01)
0.025 (0.64)
0.110 (2.79)
0.085 (2.16)
28-Pin SSOP (RS-28)
28
PIN 1
1
15
0.212 (5.38)
0.205 (5.207)
0.311 (7.9)
0.301 (7.64)
14
0.407 (10.34)
0.397 (10.08)
0.07 (1.78)
0.066 (1.67)
0.008 (0.203)
0.002 (0.050)
0.0256 (0.65)
BSC
0.009 (0.229)
0.005 (0.127)
8°
0°
1. LEAD NO. 1 IDENTIFIED BY A DOT.
2. LEADS WILL BE EITHER TIN PLATED OR SOLDER DIPPED
IN ACCORDANCE WITH MIL-M-38510 REQUIREMENTS
0.03 (0.762)
0.022 (0.558)
–12–
REV. 0

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