ADG726 Analog Devices, ADG726 Datasheet

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ADG726

Manufacturer Part Number
ADG726
Description
Manufacturer
Analog Devices
Datasheet

Specifications of ADG726

Case
QFP

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a
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 that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
REV. 0
GENERAL DESCRIPTION
The ADG726/ADG732 are monolithic CMOS 32-channel/dual
16-channel analog multiplexers. The ADG732 switches one of
32 inputs (S1-S32) to a common output, D, as determined by
the 5-bit binary address lines A0, A1, A2, A3, and A4. The
ADG726 switches one of 16 inputs as determined by the 4-bit
binary address lines A0, A1, A2, and A3.
On-chip latches facilitate microprocessor interfacing. The
ADG726 device may also be configured for differential opera-
tion by tying CSA and CSB together. An EN input is used to
enable or disable the devices. When disabled, all channels are
switched OFF.
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.
They operate from a single supply of +1.8 V to +5.5 V and a ±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 demultiplexers and have an input signal range that 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.
They are available in either 48-lead CSP or TQFP packages.
FEATURES
1.8 V to 5.5 V Single Supply
4
0.5
48-Lead TQFP or 48-Lead 7 mm
Rail-to-Rail Operation
30 ns Switching Times
Single 32-to-1 Channel Multiplexer
Dual/Differential 16-to-1 Channel Multiplexer
TTL/CMOS Compatible Inputs
For Functionally Equivalent Devices with Serial Interface
APPLICATIONS
Optical Applications
Data Acquisition Systems
Communication Systems
Relay Replacement
Audio and Video Switching
Battery-Powered Systems
Medical Instrumentation
Automatic Test Equipment
2.5 V Dual-Supply Operation
See ADG725/ADG731
On Resistance
On Resistance Flatness
7 mm CSP Packages
+1.8 V to +5.5 V, 2.5 V Analog Multiplexers
PRODUCT HIGHLIGHTS
1. +1.8 V to +5.5 V single- or ± 2.5 V dual-supply operation.
2. On resistance of 4 Ω
3. Guaranteed break-before-make switching action
4. 7 mm × 7 mm 48-lead chip scale package (CSP)
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
S16A
S16B
These parts are specified and guaranteed with +5 V ± 10%,
+3 V ± 10% single-supply, and ± 2.5 V ± 10% dual-
supply rails.
or 48-lead TQFP package
CSA
CSB
S1A
S1B
WR
A0
FUNCTIONAL BLOCK DIAGRAMS
ADG726
DECODER
A1
1-OF-16
A2
16-/32-Channel, 4
A3
EN
ADG726/ADG732
DA
DB
S32
WR
CS
S1
© Analog Devices, Inc., 2002
A0
A1
ADG732
DECODER
1-OF-32
A2
www.analog.com
A3
A4
EN
D

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ADG726 Summary of contents

Page 1

... The ADG732 switches one of 32 inputs (S1-S32 common output determined by the 5-bit binary address lines A0, A1, A2, A3, and A4. The ADG726 switches one of 16 inputs as determined by the 4-bit binary address lines A0, A1, A2, and A3. On-chip latches facilitate microprocessor interfacing. The ADG726 device may also be configured for differential opera- tion by tying CSA and CSB together ...

Page 2

... ON t (EN) OFF Charge Injection OFF Isolation Channel-to-Channel Crosstalk –3 dB Bandwidth ADG726 ADG732 C (OFF (OFF) D ADG726 ADG732 (ON ADG726 ADG732 POWER REQUIREMENTS I DD NOTES 1 Temperature range is as follows: B Version: –40°C to +85°C. 2 Guaranteed by design; not subject to production test. Specifications subject to change without notice. ...

Page 3

... Bandwidth ADG726 ADG732 C (OFF (OFF) D ADG726 ADG732 (ON ADG726 ADG732 POWER REQUIREMENTS I DD NOTES 1 Temperature ranges are as follows: B Version: –40°C to +85°C. 2 Guaranteed by design; not subject to production test. Specifications subject to change without notice. REV GND = 0 V, unless otherwise noted Version – ...

Page 4

... ADG726/ADG732 SPECIFICATIONS DUAL SUPPLY (V = +2 Parameter ANALOG SWITCH Analog Signal Range On Resistance ( Resistance Match Between Channels (∆ Resistance Flatness (R ) FLAT(ON) LEAKAGE CURRENTS Source OFF Leakage I (OFF) S Drain OFF Leakage I (OFF) D ADG726 ADG732 Channel ON Leakage (ON ADG726 ADG732 DIGITAL INPUTS Input High Voltage, V ...

Page 5

... EN Figure 1. Timing Diagram Input data is latched on the rising edge of WR. The ADG726 has two CS inputs. This enables the part to be used either as a dual 16-1 channel multiplexer or a differential 16-channel multiplexer differential output is required, tie CSA and CSB together. –5– ...

Page 6

... ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the ADG726/ADG732 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality ...

Page 7

... Don’t Care Don’t Care REV. 0 Table I. ADG726 Truth Table EN CSA CSB L-> Table II. ADG732 Truth Table L-> –7– ADG726/ADG732 ON Switch Retains Previous Switch Condition No Change in Switch Condition NONE S1A–DA, S1B–DB S2A–DA, S2B–DB S3A–DA, S3B–DB S4A– ...

Page 8

... ADG726/ADG732 V Most Positive Power Supply Potential DD V Most Negative Power Supply in a Dual-Supply Application. In single-supply applications, connect to GND Positive Supply Current DD I Negative Supply Current SS GND Ground (0 V) Reference S Source Terminal. May be an input or output. D Drain Terminal. May be an input or output. ...

Page 9

... – TPC 4. On Resistance vs Single Supply –5 – + –15 –3 –2 – – TPC 7. ADG732 Charge Injection vs. Source Voltage REV. 0 Typical Performance Characteristics—ADG726/ADG732 + +2.25V +2. –2.25V –2. +2.75V –2.75V –2.75 –1.75 –0.75 0.25 1. – TPC 2 ...

Page 10

... Test Circuit 2. I (OFF THRU S31 A0 ADG732 GND WR *SIMILAR CONNECTION FOR ADG726 Test Circuit 5. Switching Time of Multiplexer THRU S31 A0 ADG732 GND WR *SIMILAR CONNECTION FOR ADG726 3V – –20 –30 –40 –50 –60 –70 –80 –90 –100 0.03 0 FREQUENCY – MHz TPC 11. Crosstalk vs. Frequency ...

Page 11

... OUT C L 1nF V OUT GND WR Test Circuit 9. Charge Injection 0 LOGIC “ 1” ADG732* GND OFF ISOLATION = 20 LOG * SIMILAR CONNECTION FOR ADG726 Test Circuit 10. OFF Isolation –11– ADG726/ADG732 50% t (WR) ON 20% t (WR) OFF 20 OFF 50% 50 (EN) (EN) ON OFF 10% 90 OFF V OUT ...

Page 12

... V NETWORK DD SS ANALYZER OUT R L ADG732* 50 GND V WITH SWITCH OUT INSERTION LOSS = 20 LOG V WITHOUT SWITCH OUT * SIMILAR CONNECTION FOR ADG726 Test Circuit 12. Bandwidth 0.30 0.23 PIN 1 0.18 INDICATOR 48 1 5.25 BOTTOM 4.70 VIEW 2. 5.50 REF 37 36 7.00 BSC 0.27 0.22 1.05 ...

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