|
|
PDF AD7511 Data sheet ( Hoja de datos )
| Número de pieza | AD7511 | |
| Descripción | Dl CMOS Protected Analog Switches | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de AD7511 (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
|
No Preview Available !
•
ANALOG
DEVICES
Dl CMOS
Protected Analog Switches
AD7511
FEATURES
Latch-Proof
Overvoitage-Proof: ±25V
Low Ron: 7511
Low Dissipation: 3mW
TTL/CMOS Direct Interface
Siiicon-Nitride Passivated
Monolithic Dielectrically-lsolated CMOS
Standard 14-/16-Pin DIPs and
20-Terminal Surface Mount Packages
AD7510 and AD7512 are obsolete
DIP FUNCTIONAL DIAGRAMS
VssE
GNpfT
SI Vss n"
Dl GND^
13 OUT 1
A1 [T
A2 ^
A3|T
3 32
D2
AD7510DI
AD7511DI ^ 12| S3
A1 ^
A2 |T
NcQj
AD75120I
OUT 2
A4^
TOP VIEW
NcjT I (Not to Scale)
D3
3 S4
NC |T
Vdd[i
TOP VIEW
(Not to Scale)
Vdd[1
3 04
NO = NO CONNECT
NC = NO CONNECT
GENERAL DESCRIPTION
The AD7510DI, AD7511DI and AD7512DI are a family of
latch proof dielectrically isolated CMOS switches featuring over-
voltage protection up to ± 25V above the power supplies. These
benefits are obtained without sacrificihg the low "ON" resistance
(75n) or low leakage current (500pA), the main features of an
analog switch.
The AD7510DI and AD7511DI consist of four independent
SPST analog switches packaged in either a 16-pin DIP or a 20-
terminal surface mount package. They differ only in that the
digital control logic is inverted. The AD7512DI has two inde
pendent SPDT switches packaged either in a 14-pin DIP or a
20-terminal surface mount package.
Very low power dissipation, overvoltage protection and TTL/
CMOS direct interfacing are achieved by combining a unique
circuit design and a dielectrically isolated CMOS process. Silicon
nitride passivation ensures long term stability while monolithic
construction provides reliability.
The AD7510 and AD7512 are no longer available.
CONTROL LOGIC
AD7510DI Switch "ON" for Address "HIGH"
AD7511DI Switch "ON" for Address "LOW"
AD7512DI Address "HIGH" makes SI to Out 1 and S3 to
Out 2
REV. B
Document Feedback
information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devicesfor 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. Box9106, Norwood, MA02062-9108, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703
Twx: 710/394-6577
Telex: 924491
Cable: ANALOG NORWOODMASS
1 page  
AD7511
I—Circuit Description
TTL
CONTROL I
INPUT
LEVEL
SHIFTER/
DRIVER
OVoo +15V
O Vss-ISV
NOTE: CIRCLED DEVICES IN SEPARATE ISOLATED POCKETS.
Figure 1. Typical Output Switch Circuitry ofAD7510DI Series
CIRCUIT DESCRIPTION
CMOS devices make excellent analog switches; however, problems
with overvoltage andlatch-up phenomenon necessitated protection
circtiitry. These protection circuits, however, eithercaused
degradation of important switch parameters suchas Ron
or leakage, or provided only limited protection in the event of
overvoltage.
The AD7510DI series switches utilize a dielectrically isolated
CMOS fabrication process to eliminate the four-layer substrate
found in jimction-isolated CMOS, thus providing latch-free
operation.
A typical switch channel is shown in Figure 2. The output
switching element is comprised of device numbers 4 and 5.
Operation is asfollows: for an"ON"switch, (in+) is Vddand
(in-) is Vss from the driver circuits. Device numbers 1 and 2
are "OFF" and number 3 in "ON". Hence, the backgates of the
P- and N-channel output devices (numbers 4 and 5) are tied
together and floating. The circled devices are located in separate
dielectrically isolated pockets. Floating theoutputswitch backgates
with the signal inputincreases the effective threshold voltage for
an applied analog signal, thus providing a flatter Ron versus Vs
response.
For an "OFF" switch, device number 3 is "OFF," and the
backgates of devices 4 and 5 are tied through IkO resistors (R1
and to the respective supply voltages through the "ON"
devices 1 and 2.
If a voltage is applied to the S or D (OUT) terminal which
exceeds Vdd or Vss, the S- or D-to-backgate diode is forward
biased; however, R1 and R2 provide currentlimiting action to
the supplies.
Anequivalent circuit of the output switch element in Figure 3
shows that, indeed, the Ikfl limiting resistors are in series with
the backgates of the P- and N-channel output devices —not in
series with the signal path between the S and D terminals.
It is possible to turn on an "OFF' switch by applying a voltage
in excess of Vdd or Vss to the S or D terminal. If a positive
stress voltage is applied to the S or D terminal which exceeds
Vdd by a threshold, then the P-channel (device 5) will turn on
creating a low impedance path between the S and D terminals.
A similar situation exists for negative stress voltages which
exceed Vss. In this case the N-channel provides the low impedance
path between the S and D terminals. The limiting factor on the
overvoltage protection is the power dissipation of the package
and is ±20V continuous (or 20mA whichever occurs first) above
the supply voltages.
Vdd
+15V
:ik
so
P CHANNEL
N- CHANNEL
-OD
Figure 2. AD7510DI SeriesOu^ut Switch
Diode Equivalent Circuit
-4- REV. B
5 Page 
AD7511
REVISION HISTORY
12/2016—Rev. A to Rev. B
Added AD7510 and AD7512 Obsolete Note ................................ 1
Updated Outline Dimensions .................................................................9
Changes to Ordering Guide.....................................................................9
©2016 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D01131-0-12/16(B)
Rev. B | Page 10 of 10
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet AD7511.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| AD7510DI | Protected Analog Switches | Analog Devices |
| AD7511 | Dl CMOS Protected Analog Switches | Analog Devices |
| AD7511DI | Protected Analog Switches | Analog Devices |
| AD7512DI | Protected Analog Switches | Analog Devices |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |