adg751 Analog Devices, Inc., adg751 Datasheet

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adg751

Manufacturer Part Number
adg751
Description
Cmos, Low Voltage Rf/video, Spst Switch
Manufacturer
Analog Devices, Inc.
Datasheet

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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.
GENERAL DESCRIPTION
The ADG751 is a low voltage SPST (single pole, single throw)
switch. It is constructed in a T-switch configuration, which
results in excellent Off Isolation while maintaining good fre-
quency response in the ON condition.
High off isolation and wide signal bandwidth make this part
suitable for switching RF and video signals. Low power con-
sumption and operating supply range of +1.8 V to +5.5 V make
it ideal for battery powered, portable instruments.
The ADG751 is designed on a submicron process that provides
low power dissipation yet gives high switching speed and low on
resistance. This part is a fully bidirectional switch and can handle
signals up to and including the supply rails.
The ADG751 is available in 6-lead SOT-23 and 8-lead SOIC
packages.
FEATURES
High Off Isolation –75 dB at 100 MHz
–3 dB Signal Bandwidth 300 MHz
+1.8 V to +5.5 V Single Supply
Low On-Resistance (15
Fast Switching Times
Typical Power Consumption <0.01 W
TTL/CMOS Compatible
APPLICATIONS
Audio and Video Switching
RF Switching
Networking Applications
Battery Powered Systems
Communication Systems
Relay Replacement
Sample-and-Hold Systems
t
t
ON
OFF
Typically 9 ns
Typically 3 ns
)
PRODUCT HIGHLIGHTS
1. High Off Isolation –75 dB at 100 MHz.
2. –3 dB Signal Bandwidth 300 MHz.
3. Low On-Resistance (15 ).
4. Low Power Consumption, typically <0.01 W.
5. Tiny 6-lead SOT-23 and 8-lead SOIC packages.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
FUNCTIONAL BLOCK DIAGRAM
SWITCH SHOWN FOR A LOGIC "1" INPUT
S
RF/Video, SPST Switch
World Wide Web Site: http://www.analog.com
CMOS, Low Voltage
ADG751
© Analog Devices, Inc., 1999
ADG751
D
IN

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adg751 Summary of contents

Page 1

... Communication Systems Relay Replacement Sample-and-Hold Systems GENERAL DESCRIPTION The ADG751 is a low voltage SPST (single pole, single throw) switch constructed in a T-switch configuration, which results in excellent Off Isolation while maintaining good fre- quency response in the ON condition. High off isolation and wide signal bandwidth make this part suitable for switching RF and video signals ...

Page 2

... ADG751–SPECIFICATIONS Parameter ANALOG SWITCH Analog Signal Range On-Resistance ( 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 INL Input Current INL ...

Page 3

... ADG751 Units Test Conditions/Comments V DD typ –10 mA max Test Circuit +3 typ V V max Test Circuit 2 nA typ ...

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 ADG751 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 5

... The frequency response of the “ON” switch. Loss due to the ON resistance of the switch. Maximum input voltage for Logic “0.” Minimum input voltage for Logic “1.” Input current of the digital input. Positive supply current. Table I. Truth Table ADG751 IN Switch Condition OFF ...

Page 6

... Performance Characteristics ADG751 +2. +3. +5. DRAIN SOURCE VOLTAGE – Volts D S Figure 1. On Resistance as a Function of V Supplies (A Grade +125 C + +25 C – 0.5 1.0 1 DRAIN SOURCE VOLTAGE – Volts ...

Page 7

... Figure 10. Supply Current vs. Input Switching Frequency –2 –4 –6 –8 –10 0 100 300 Figure 11. Charge Injection vs. Source/Drain Voltage A GRADE B GRADE 100 300 –7– ADG751 GRADE A GRADE 1k 10k 100k 100M FREQUENCY – + +3V ...

Page 8

... ADG751 GENERAL DESCRIPTION The ADG751 is an SPST switch constructed using switches configuration to obtain high “OFF” isolation while maintain- ing good frequency response in the “ON” condition. Figure 12 shows the T-switch configuration. While the switch is in the OFF state, the shunt switch is closed and the two series switches are open ...

Page 9

... D V OUT C L 1.0nF V OUT Test Circuit 5. Charge Injection NETWORK NETWORK ANALYZER ANALYZER 50 V OUT OUT V S –9– ADG751 CONNECT Test Circuit 3. On Leakage 50% 50% 90% 90 OFF ON OFF ON V OUT INJ L OUT ...

Page 10

... ADG751 0.071 (1.80) 0.059 (1.50) 0.051 (1.30) 0.035 (0.90) OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 8-Lead SOIC (RM-8) 0.122 (3.10) 0.114 (2.90 0.122 (3.10) 0.199 (5.05) 0.114 (2.90) 0.187 (4.75 PIN 1 0.0256 (0.65) BSC 0.120 (3.05) 0.120 (3.05) 0.112 (2.84) 0.112 (2.84) 0.043 (1.09) 0.006 (0.15) 0.037 (0.94) 0.002 (0.05) 33 0.018 (0.46) 27 0.011 (0.28) SEATING 0.008 (0.20) PLANE 0.003 (0.08) 6-Lead SOT-23 (RT-6) 0.122 (3.10) ...

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