adg781 Analog Devices, Inc., adg781 Datasheet

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adg781

Manufacturer Part Number
adg781
Description
2.5  Quad Spst Switches In Chip Scale Package
Manufacturer
Analog Devices, Inc.
Datasheet

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a
GENERAL DESCRIPTION
The ADG781, ADG782, and ADG783 are monolithic CMOS
devices containing four independently selectable switches. These
switches are designed on an advanced submicron process that
provides low power dissipation and high switching speed, low on
resistance, low leakage currents and high bandwidth.
They are designed to operate from a single 1.8 V to 5.5 V sup-
ply, making them ideal for use in battery powered instruments
and with the new generation of DACs and ADCs from Analog
Devices. Fast switching times and high bandwidth make the
part suitable for video signal switching.
The ADG781, ADG782, and ADG783 contain four independent
single-pole/single throw (SPST) switches. The ADG781 and
ADG782 differ only in that the digital control logic is inverted.
The ADG781 switches are turned on with a logic low on the
appropriate control input, while a logic high is required to turn
on the switches of the ADG782. The ADG783 contains two
switches whose digital control logic is similar to the ADG781,
while the logic is inverted on the other two switches.
Each switch conducts equally well in both directions when ON.
The ADG783 exhibits break-before-make switching action.
The ADG781/ADG782/ADG783 are available in 20-lead chip
scale packages.
PRODUCT HIGHLIGHTS
1. 20-Lead 4 mm
2. 1.8 V to 5.5 V Single Supply Operation. The ADG781,
3. Very Low R
4. Low On-Resistance Flatness.
5. –3 dB Bandwidth >200 MHz.
6. Low Power Dissipation. CMOS construction ensures low
7. Fast t
8. Break-Before-Make Switching. This prevents channel shorting
IN4
IN2
IN3
IN1
ADG782, and ADG783 offer high performance and are
fully specified and guaranteed with 3 V and 5 V supply
rails.
voltage of 1.8 V, R
range.
power dissipation.
when the switches are configured as a multiplexer (ADG783
only).
ADG781
2.5
ON
ADG781/ADG782/ADG783
/t
FUNCTIONAL BLOCK DIAGRAMS
OFF.
ON
SWITCHES SHOWN FOR A LOGIC “1” INPUT
D3
D4
S1
D1
S2
D2
S3
S4
(4.5 Ω max at 5 V, 8 Ω max at 3 V). At supply
in Chip Scale Package
4 mm Chip Scale Package (CSP).
ON
Quad SPST Switches
IN2
IN3
IN4
IN1
is typically 35 Ω over the temperature
ADG782
S1
D1
S2
D2
S3
D3
S4
D4
IN4
IN2
IN3
IN1
ADG783
D1
S2
D3
S4
D4
S1
D2
S3

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adg781 Summary of contents

Page 1

... The ADG781 and ADG782 differ only in that the digital control logic is inverted. The ADG781 switches are turned on with a logic low on the appropriate control input, while a logic high is required to turn on the switches of the ADG782. The ADG783 contains two switches whose digital control logic is similar to the ADG781, while the logic is inverted on the other two switches ...

Page 2

... ADG781/ADG782/ADG783–SPECIFICATIONS Parameter ANALOG SWITCH Analog Signal Range On Resistance ( On-Resistance Match Between Channels (∆ On-Resistance Flatness (R ) FLAT(ON) LEAKAGE CURRENTS Source OFF Leakage I (OFF) S Drain OFF Leakage I (OFF) D Channel ON Leakage (ON DIGITAL INPUTS Input High Voltage, V INH Input Low Voltage, V ...

Page 3

... MHz typ 10 pF typ 10 pF typ 22 pF typ µA typ 0.001 µA max 1.0 ADG781/ADG782/ADG783 Test Conditions/Comments –10 mA Test Circuit – – ...

Page 4

... 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 ADG781/ADG782/ADG783 feature 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. Lead Temperature, Soldering (10 sec 300° ...

Page 5

... ADG781/ADG782/ADG783 “ON” switch capacitance. Delay between applying the digital control input and the output switching on. Delay between applying the digital control input and the output switching off. “OFF” time or “ON” time measured between the 90% points of both switches, when switching from one address state to another (ADG783 only) ...

Page 6

... ADG781/ADG782/ADG783 –30 – 5V –50 –60 –70 –80 –90 –100 –110 –120 –130 10k 100k 1M FREQUENCY – Hz –30 – 5V –50 –60 –70 –80 –90 –100 –110 –120 –130 10k 100k 1M FREQUENCY – Hz APPLICATIONS Figure 1 illustrates a photodetector circuit with programmable gain ...

Page 7

... L2 L2 300 35pF OUT C L 1nF V OUT NETWORK NETWORK ANALYZER ANALYZER V OUT OUT OUT V S ADG781/ADG782/ADG783 I (ON CONNECT 50% 50% 50% 50 90% 90 OFF V 50% 50 90% 90% V OUT1 0V 90% ...

Page 8

... ADG781/ADG782/ADG783 PIN 1 INDICATOR 0.035 (0.90) MAX 0.033 (0.85) NOM SEATING PLANE Revision History Location Data Sheet changed from REV REV. A. Edits to Typical Performance Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–6 Changes to OUTLINE DIMENSIONS drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.1 F NETWORK V ANALYZER GND V WITH SWITCH OUT ...

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