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AN-952
APPLICATION NOTE
One Technology Way • P. O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Te l: 781.329.4700 • Fax: 781.461.3113 • www.analog.com
ADG9xx Wideband CMOS Switches: Frequently Asked Questions
by Theresa Corrigan
Rev. 0 | Page 1 of 4
INTRODUCTION
The ADG9xx CMOS wideband switches are designed primarily
to meet the requirements of devices transmitting at industrial,
scientific, and medical (ISM) band frequencies (≥900 MHz).
The low insertion loss, high isolation between ports, low
distortion, and low current consumption of these devices
make them an excellent solution for many high frequency
applications that require low power consumption and the
ability to handle transmitted power (up to 16 dBm). Typical
applications include high speed filtering and data routing.
Complete specifications for each part (ADG901, ADG902,
ADG904, ADG904R, ADG918, ADG919, ADG936, and
ADG936R) can be found in the data sheets available from
Analog Devices, Inc., and should be consulted in conjunction
with this application note. This application note addresses some of
the frequently asked questions about these parts. A full list of
ADG9xx parts is shown in Table 1.
Table 1. Key Specifications for the ADG9xx Series
Part No. Function
1
Power
Supply
Insertion Loss
@ 1 GHz (dB)
Isolation @
1 GHz (dB)
Maximum Input
Power, No DC
Bias (dBm)
Maximum Input
Power with 0.5 V
DC Bias (dBm)
Package
ADG901
1 × SPST;
Absorptive
1.65 V to
2.75 V
−0.8 −37 7 16
8-Lead MSOP and
8-Lead 3 mm ×
3 mm LFCSP
ADG902
1 × SPST;
Reflective
1.65 V to
2.75 V
−0.8 −37 7 16
8-Lead MSOP and
8-Lead 3 mm ×
3 mm LFCSP
ADG918
1 × SPDT;
Absorptive
1.65 V to
2.75 V
−0.8 −43 7 16
8-Lead MSOP and
8-Lead 3 mm ×
3 mm LFCSP
ADG919
1 x SPDT;
Reflective
1.65 V to
2.75 V
−0.8 −43 7 16
8-Lead MSOP and
8-Lead 3 mm ×
3 mm LFCSP
ADG936
2 × SPDT;
Absorptive
1.65 V to
2.75 V
−0.9 −36 7 16
20-Lead TSSOP;
20-Lead, 4 mm ×
4 mm LFCSP
ADG936R
2 × SPDT;
Reflective
1.65 V to
2.75 V
−0.9 −36 7 16
20-Lead TSSOP;
20-Lead, 4 mm ×
4 mm LFCSP
ADG904
4:1 Mux;
Absorptive
1.65 V to
2.75 V
−1.1 −37 7 16
20-Lead TSSOP;
20-Lead, 4 mm ×
4 mm LFCSP
ADG904R
4 × SPDT;
Reflective
1.65 V to
2.75 V
−1.1 −37 7 16
20-Lead TSSOP;
20-Lead, 4 mm ×
4 mm LFCSP
1
Absorptive (matched): switch with 50 Ω terminated shunts to ground. Reflective: switch with 0 Ω terminated shunts to ground.
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