adg779 Analog Devices, Inc., adg779 Datasheet

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adg779

Manufacturer Part Number
adg779
Description
Cmos 1.8 V To 5.5 V, 2.5 ? Spdt Switch/2 1 Mux In Tiny Sc70 Package
Manufacturer
Analog Devices, Inc.
Datasheet

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FEATURES
1.8 V to 5.5 V single supply
2.5 Ω on resistance
0.75 Ω on-resistance flatness
−3 dB bandwidth >200 MHz
Rail-to-rail operation
6-lead SC70 package
Fast switching times
Typical power consumption (<0.01 μW)
TTL/CMOS compatible
APPLICATIONS
Battery-powered systems
Communication systems
Sample hold systems
Audio signal routing
Video switching
Mechanical reed relay replacements
GENERAL DESCRIPTION
The ADG779 is a monolithic CMOS SPDT (single-pole,
double-throw) switch. This switch is designed on a submicron
process that provides low power dissipation yet gives high
switching speed, low on resistance, and low leakage currents.
The ADG779 operates from a single supply range of 1.8 V to
5.5 V, making it ideal for use in battery-powered instruments
and with the new generation of DACs and ADCs from Analog
Devices, Inc.
Each switch of the ADG779 conducts equally well in both
directions when on. The ADG779 exhibits break-before-make
switching action.
Because of the advanced submicron process, −3 dB bandwidth
of greater than 200 MHz can be achieved.
The ADG779 is available in a 6-lead SC70 package.
Rev. 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. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
t
t
ON
OFF
20 ns
6 ns
SPDT Switch/2:1 Mux in Tiny SC70 Package
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
PRODUCT HIGHLIGHTS
1.
2.
3.
4.
5.
6.
7.
Tiny 6-Lead SC70 Package.
1.8 V to 5.5 V Single-Supply Operation. The ADG779
offers high performance, including low on resistance and
fast switching times, and is fully specified and guaranteed
with 3 V and 5 V supply rails.
Very Low R
operation, R
On-Resistance Flatness (R
−3 dB Bandwidth > 200 MHz.
Low Power Dissipation. CMOS construction ensures low
power dissipation.
14 ns Switching Times.
CMOS 1.8 V to 5.5 V, 2.5 Ω
FUNCTIONAL BLOCK DIAGRAM
ON
ON
(5 Ω max at 5 V, 10 Ω max at 3 V). At 1.8 V
is typically 40 Ω over the temperature range.
S2
S1
IN
SWITCHES SHOWN FOR
© 2005 Analog Devices, Inc. All rights reserved.
A LOGIC 1 INPUT
ADG779
Figure 1.
FLAT (ON)
) (0.75 Ω typ).
D
ADG779
www.analog.com

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adg779 Summary of contents

Page 1

... The ADG779 operates from a single supply range of 1 5.5 V, making it ideal for use in battery-powered instruments and with the new generation of DACs and ADCs from Analog Devices, Inc ...

Page 2

... ADG779 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Product Highlights ........................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 5 ESD Caution.................................................................................. 5 REVISION HISTORY 10/05—Rev Rev. A Updated Format..................................................................Universal Changes to Table 1............................................................................ 3 Changes to Table 2............................................................................ 4 Changes to Table 3............................................................................ 5 Changes to Terminology Section.................................................... 7 Changes to Ordering Guide .......................................................... 12 7/01— ...

Page 3

... MHz typ 7 pF typ 27 pF typ 0.001 μA typ 1.0 μA max Rev Page ADG779 Test Conditions/Comments −10 mA, see Figure − − ...

Page 4

... ADG779 ± 10%, GND = Table 2. Parameter ANALOG SWITCH Analog Signal Range On Resistance ( On-Resistance Match Between Channels (ΔR On-Resistance Flatness (R ) FLAT (ON) 2 LEAKAGE CURRENTS Source Off Leakage I (Off ) S Channel On Leakage (On DIGITAL INPUTS Input High Voltage, V INH Input Low Voltage, V ...

Page 5

... DD other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Table 4. Truth Table ADG779 Rev Page ADG779 Switch S1 Switch S2 ...

Page 6

... S1 Source Terminal. Can be an input or an output Drain Terminal. Can be an input or an output Source Terminal. Can be an input or an output ADG779 TOP VIEW 5 DD (Not to Scale) GND Figure 2. Pin Configuration Rev Page ...

Page 7

... Bandwidth The frequency at which the output is attenuated by 3 dB. On Response The frequency response of the on switch. Insertion Loss The loss due to the on resistance of the switch. THD + N The ratio of harmonic amplitudes plus noise of a signal to the fundamental. Rev Page ADG779 ...

Page 8

... ADG779 TYPICAL PERFORMANCE CHARACTERISTICS 6.0 5 2.7V DD 5.0 4.5 4 3.5 DD 3.0 2 2.0 1.5 1.0 0 0.5 1.0 1.5 2.0 2.5 3 – DRAIN OR SOURCE VOLTAGE ( Figure 3. On Resistance as a Function of V 6.0 5.5 5.0 +85°C 4.5 +25°C 4.0 –40°C 3.5 3.0 2.5 2.0 1.5 1.0 0 0.5 1.0 1 – DRAIN OR SOURCE VOLTAGE ( Figure 4. On Resistance as a Function of V Different Temperatures V 6 ...

Page 9

... –40 –50 –60 –70 –80 –90 –100 –110 –120 –130 10k 100k 1M 10M FREQUENCY (Hz) Figure 10. Crosstalk vs. Frequency –2 –4 –6 100M 10k Figure 11. On Response vs. Frequency 100M Rev Page ADG779 100k 1M 10M 100M FREQUENCY (Hz) ...

Page 10

... ADG779 TEST CIRCUITS V1 Figure 12. On Resistance 0.1µ 0.1µ (OFF Figure 13. Off Leakage OUT OUT 300Ω 35pF GND Figure 15. Switching Times ...

Page 11

... ANALYZER 50Ω OUT R L 50Ω 50Ω GND V OUT V S Rev Page 0.1µ GND V WITH SWITCH OUT INSERTION LOSS = 20 log V WITHOUT SWITCH OUT Figure 19. Bandwidth ADG779 NETWORK ANALYZER 50Ω OUT R L 50Ω ...

Page 12

... ADG779BKS-REEL –40°C to +85°C ADG779BKS-REEL7 –40°C to +85°C 2 ADG779BKSZ-R2 –40°C to +85°C 2 ADG779BKSZ-REEL –40°C to +85°C 2 ADG779BKSZ-REEL7 –40°C to +85°C 1 Brand on these packages is limited to three characters due to space constraints Pb-free part. ...

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