Wideband switch: Absorptive/reflective switches High isolation GHz) in

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Wideband GHz, Isolation GHz, CMOS 1.65 2.75 Mux/SPDT Switches ADG918/ADG919
Wideband switch: Absorptive/reflective switches High isolation GHz) insertion loss (0.8 GHz) Single 1.65 2.75 power supply CMOS/LVTTL control logic 8-lead MSOP tiny LFCSP packages power consumption
ADG918
CTRL
APPLICATIONS
Wireless communications General-purpose switching Dual-band applications High speed filter selection Digital transceiver front switch switching Tuner modules Antenna diversity switching
ADG919
03335-A-001
CTRL
Figure
GENERAL DESCRIPTION
ADG918/ADG919 wideband switches using CMOS process provide high isolation insertion loss GHz. ADG918 absorptive (matched) switch having terminated shunt legs, while ADG919 reflective switch. These devices designed such that isolation high over frequency range. They have on-board CMOS control logic, thus eliminating need external controlling circuitry. control inputs both CMOS
2.5V 25°C
LVTTL compatible. power consumption these CMOS devices makes them ideally suited wireless applications general-purpose high frequency switching.
PRODUCT HIGHLIGHTS
Isolation GHz. Insertion Loss GHz. Tiny 8-Lead MSOP/LFCSP Packages.
-0.4 -0.6
-0.8
-1.0
INSERTION LOSS (dB)
-1.2 -1.4 -1.6 -1.8 -2.0 -2.2 -2.4 -2.6
ISOLATION (dB)
03335-A-003
-2.8 -3.0
2.5V 25°C 100k 100M FREQUENCY (Hz)
03335-A-004
-100
100k
100M FREQUENCY (Hz)
-3.2
Figure Isolation Frequency Rev.
Information furnished Analog Devices believed accurate reliable. However, responsibility assumed Analog Devices use, infringements patents other rights third parties that result from use. Specifications subject change without notice. license granted implication otherwise under patent patent rights Analog Devices. Trademarks registered trademarks property their respective owners.
Figure Insertion Loss Frequency
Technology Way, P.O. 9106, Norwood, 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.326.8703 2004 Analog Devices, Inc. rights reserved.
ADG918/ADG919 TABLE CONTENTS
ADG918/ADG919-Specifications Absolute Maximum Ratings. Caution. Configuration Function Descriptions. Terminology Typical Performance Characteristics Test Circuits. Applications. Absorptive Reflective Wireless Metering. Tuner Modules. Filter Selection ADG9xx Evaluation Board Outline Dimensions Ordering Guide
REVISION HISTORY
9/04-Changed from Rev. Rev. Updated Format.Universal Change Data Sheet Title Change Features.1 Change Product Highlights.1 Changes Specifications.3 Change ADG9xx Evaluation Board section.13 Changes Ordering Guide.14 8/03 Revision Initial Version
Rev. Page
ADG918/ADG919 SPECIFICATIONS
Table 1.65 2.75 input power dBm, specifications TMIN TMAX, unless otherwise noted.1
Parameter ELECTRICAL CHARACTERISTICS Operating Frequency3 Frequency4 Input Power4 Insertion Loss Symbol Conditions Bias Bias MHz; MHz; 1000 MHz; 1000 1000 1000 1000 1000 1000 CTRL CTRL 1000 MHz/901 MHz, Version Typ2 1.25 Unit
S21,
Isolation-RFC RF1/RF2 Package) Isolation-RFC RF1/RF2 Package) Isolation-RF1 (Crosstalk) Package) Isolation-RF1 (Crosstalk) Package) Return Loss Channel)4
S21,
S21,
S21,
S21,
S11,
Return Loss (Off Channel)4 ADG918 Switching Time4 Switching Time4 Rise Time4 Fall Time4 Compression4 Third Order Intermodulation Intercept Video Feedthrough5 ELECTRICAL CHARACTERISTICS Input High Voltage Input Voltage Input Leakage Current CAPACITANCE4 RF1/RF2, Port Capacitance CTRL Input Capacitance POWER REQUIREMENTS Quiescent Power Supply Current
S11,
tOFF tRISE tFALL
VINH VINH VINL VINL CCTRL
2.25 2.75 1.65 1.95 2.25 2.75 1.65 1.95 2.75
0.65 0.35
1.65
Digital inputs
2.75
Temperature range Version: -40°C +85°C. Typical values 25°C, unless otherwise stated. Point which insertion loss degrades Guaranteed design, subject production test. transience output port switch when control voltage switched from high high test setup, measured with rise time pulses bandwidth.
Rev. Page
ADG918/ADG919 ABSOLUTE MAXIMUM RATINGS1
Table 25°C, unless otherwise noted.)
Parameter Inputs Continuous Current Input Power Operating Temperature Range Industrial Version) Storage Temperature Range Junction Temperature MSOP Package Thermal Impedance LFCSP Package Thermal Impedance (2-layer board) Thermal Impedance (4-layer board) Lead Temperature, Soldering sec) Reflow, Peak Temperature (<20 sec) Rating -0.5 -0.5 -40°C +85°C -65°C +150°C 150°C 206°C/W 84°C/W 48°C/W 300°C 235°C
NOTES Stresses above those listed under Absolute Maximum Ratings cause permanent damage device. This stress rating only; functional operation device these other conditions above those listed operational sections this specification implied. Exposure absolute maximum rating conditions extended periods affect device reliability. Only absolute maximum rating applied time. RF1/RF2 Port Inputs Ground -0.5
CAUTION
(electrostatic discharge) sensitive device. Electrostatic charges high 4000 readily accumulate human body test equipment discharge without detection. Although this product features proprietary protection circuitry, permanent damage occur devices subjected high energy electrostatic discharges. Therefore, proper precautions recommended avoid performance degradation loss functionality.
Rev. Page
ADG918/ADG919 CONFIGURATION FUNCTION DESCRIPTIONS
CTRL
ADG918/ ADG919
VIEW
03335-A-002
(Not Scale)
Figure 8-Lead MSOP (RM-8) 8-Lead LFCSP (CP-8)
Table Truth Table
CTRL Signal Path
Table Function Descriptions
Mnemonic CTRL Function Power Supply Input. These parts operated from 1.65 2.75 should decoupled GND. CMOS Logic Level; 0->RF2 1->RF1 Ground Reference Point Circuitry Part COMMON Port Switch Port Port
Rev. Page
ADG918/ADG919 TERMINOLOGY
Table Terminology
Parameter CTRL VINL VINH IINL (IINH) tOFF tRISE tFALL Isolation Insertion Loss Return Loss Description Most positive power supply potential Positive supply current Ground reference Logic control input Maximum input voltage Logic Minimum input voltage Logic Input current digital input Digital input capacitance Delay between applying digital control input output switching Delay between applying digital control input output switching off. Rise time. Time signal rise from level. Fall time. Time signal fall from level. attenuation between input output ports switch when switch control voltage condition. attenuation between input output ports switch when switch control voltage condition. compression point. input power level which switch insertion loss increases over level value. measure much power switch handle before insertion loss increases Third order intermodulation intercept. This measure power false tones that occur when closely spaced tones passed through switch, whereby nonlinearity switch causes these false tones generated. amount reflected power relative incident power port. Large return loss indicates good matching. measuring return loss VSWR calculated from conversion charts. VSWR (voltage standing wave ratio) indicates degree matching present switch port. Spurious signals present ports switch when control voltage switched from high high without signal present.
Video Feedthrough
Rev. Page
ADG918/ADG919 TYPICAL PERFORMANCE CHARACTERISTICS
-0.2 -0.4 -0.6
-0.2 -0.4 -0.6 -40°C +25°C +85°C
-0.8
-1.0 -1.2 -1.4 -1.6 -1.8 -2.0 -2.2 -2.4 -2.6 -2.8 -3.0
2.25V
2.5V
INSERTION LOSS (dB)
-0.8
-1.0 -1.2 -1.4 -1.6 -1.8 -2.0 -2.2 -2.4 -2.6 -2.8
03335-A-017
INSERTION LOSS (dB)
2.75V
-3.2
100k
FREQUENCY (Hz)
100M
-3.2
100k
100M FREQUENCY (Hz)
Figure Insertion Loss Frequency over Supplies (RF1/RF2, S12, S21)
-0.30 -0.35 2.5V 2.75V
Figure Insertion Loss Frequency over Temperature (RF1/RF2, S12, S21)
1.65V 2.75V 25°C
-0.40
-0.45
ISOLATION (dB)
INSERTION (dB)
-0.50 -0.55 -0.60 -0.65 -0.70 -0.75 -0.80 25°C
03335-A-019
2.25V
100M FREQUENCY (Hz)
03335-A-020
03335-A-022
100k
100k
100M
FREQUENCY (Hz)
Figure Insertion Loss Frequency over Supplies (RF1/RF2, S12, S21) (Zoomed Figure Plot)
-0.2 -0.4 -0.6
Figure Isolation Frequency over Supplies (RF1/RF2, ADG918)
1.65V 2.75V 25°C
-0.8
-1.0
1.8V
1.65V
INSERTION LOSS (dB)
-1.2 -1.6 -1.8 -2.0 -2.2 -2.4 -2.6 -2.8 -3.0 -3.2 25°C
03335-A-021
ISOLATION (dB)
-1.4
-100
1.95V
100k
FREQUENCY (Hz)
100M
100k
100M
FREQUENCY (Hz)
Figure Insertion Loss Frequency over Supplies (RF1/RF2, S12, S21)
Figure Isolation Frequency over Supplies (RF1/RF2, ADG919)
Rev. Page
03335-A-018
25°C
-3.0
2.5V
ADG918/ADG919
2.5V
ISOLATION (dB)
(+85°C)
CH2/3
(+25°C) -100 100k 100M FREQUENCY (Hz) (-40°C)
CTRL 1V/DIV
03335-A-023
TRISE 6.1ns TFALL 6.1ns
100mV/DIV 100mV/DIV
Figure Isolation Frequency over Temperature (RF1/RF2, ADG919)
25°C 2.5V
Figure Switch Timing
RETURN LOSS (dB)
SWITCH (ADG918)
CTRL
SWITCH
03335-A-024
(-40°C, +25°C, +85°C)
100k
100M
03335-A-026
2.002mV 500mV 10.0ns
FREQUENCY (Hz)
Figure Return Loss Frequency (RF1/RF2, S11)
Figure Video Feedthrough
25°C 2.5V
X-TALK (dB)
03335-A-028
(dBm)
2.5V 25°C
100k
100M FREQUENCY (Hz)
FREQUENCY (MHz)
Figure Crosstalk Frequency (RF1/RF2, S12, S21)
Figure Frequency
Rev. Page
03335-A-029
03335-A-027
ADG918/ADG919
P-1dB (dBm)
2.5V 25°C 1000 1250 1500
03335-A-025
FREQUENCY (MHz)
Figure P-1dB Frequency
Rev. Page
ADG918/ADG919 TEST CIRCUITS*
0.1µF
0.1µF
ADG919
VOUT
VOUT VCTRL VOUT
NETWORK ANALYZER
CTRL
CTRL
03335-A-009
tOFF
INSERTION LOSS 20log
VOUT
Figure Switch Timing: tOFF
0.1µF
Figure Insertion Loss
0.1µF
ADG919
NETWORK ANALYZER
VOUT VCTRL CTRL VOUT
CTRL
VOUT
03335-A-010
VCTRL
VOUT
03335-A-013
tRISE
tFALL
CROSSTALK 20log
Figure Switch Timing: tRISE, tFALL
Figure Crosstalk
0.1µF
0.1µF
ADG919
VOUT
ADG919
OSCILLOSCOPE
CTRL
NETWORK ANALYZER
VCTRL
03335-A-011
CTRL
ISOLATION 20log
VOUT
Figure Isolation
Figure Video Feedthrough
Rev. Page
03335-A-014
VCTRL
03335-A-012
VCTRL
ADG918/ADG919
0.1µF
0.1µF
ADG919
SOURCE
ADG919
SPECTRUM ANALYZER
COMBINER
SPECTRUM ANALYZER
SOURCE
03335-A-016
CTRL
CTRL
SOURCE
03335-A-015
VCTRL
VCTRL
Figure
Figure P-1dB
Similar setups ADG918
Rev. Page
ADG918/ADG919 APPLICATIONS
ADG918/ADG919 ideal solutions power, high frequency applications. insertion loss, high isolation between ports, distortion, current consumption these parts make them excellent solutions many high frequency switching applications. most obvious application transmit/receive block, shown wireless metering block diagram Figure Other applications include switching between high frequency filters, generator, generator, antenna diversity switch many tuner modules. required isolation between transmit receive signals. SPDT configuration isolates high frequency receive signal from high frequency transmit.
ANTENNA
ADG918
TX/RX SWITCH
03335-A-005
03335-A-006
Figure Wireless Metering
ABSORPTIVE REFLECTIVE
ADG918 absorptive (matched) switch with terminated shunt legs, ADG919 reflective switch with terminated shunts ground. ADG918 absorptive switch good VSWR each port, regardless switch mode. absorptive switch should used when there need good VSWR that looking into port passing through signal common port. ADG918 therefore ideal applications that require minimum reflections back source. also ensures that maximum power transferred load. ADG919 reflective switch suitable applications where high port VSWR does matter switch some other desired performance feature. used many applications, including high speed filter selection. most cases, absorptive switch used instead reflective switch, vice versa.
TUNER MODULES
ADG918 used tuner module switch between cable input off-air antenna. This part also ideal antenna diversity switch, switching different antenna tuner.
ANTENNA CABLE
ADG918/ ADG919
Figure Tuner Modules
TUNER
FILTER SELECTION
ADG919 used demultiplex switch high frequency signals between different filters also multiplex signal output.
ADG919
WIRELESS METERING
ADG918 used wireless metering applications. used conjunction with ADF7020 transceiver utility metering transceiver application, providing
ADG919
Figure Filter Selection
Rev. Page
03335-A-007
RFIN
RFOUT
ADG918/ADG919 ADG9XX EVALUATION BOARD
ADG9xx evaluation board allows designers evaluate high performance wideband switches with minimum effort. prove that these devices meet user's requirements, user only requires power supply network analyzer along with evaluation board. application note available with evaluation board gives complete information operating evaluation board. port (see Figure connected through transmission line left connector connected through transmission lines connectors respectively. through transmission line connects this transmission line used estimate loss over environmental conditions being evaluated. board constructed 4-layer, material with dielectric constant overall thickness 0.062 inches. ground layers with grounded planes provide ground transmission lines. transmission lines were designed using coplanar waveguide with ground plane model using trace width 0.052 inches, clearance ground plane 0.030 inches, dielectric thickness 0.029 inches, metal thickness 0.014 inches.
03335-A-008
Figure ADG9xx Evaluation Board View
Rev. Page
ADG918/ADG919 OUTLINE DIMENSIONS
3.00
0.50 0.40 0.30
3.00
4.90
INDICATOR
3.00 0.45
0.60
INDICATOR
VIEW
2.75
0.65 1.10 0.80 0.60 0.40
0.90 0.85 0.80 0.80 0.65 0.05 0.02 0.30 0.23 0.18 0.20
0.50 0.25
TTOM VIEW
1.50
1.90 1.75 1.60
0.15 0.00 0.38 0.22 COPLANARITY 0.10
1.60 1.45 1.30
0.23 0.08 SEATING PLANE
SEATING PLANE
COMPLIANT JEDEC STANDARDS MO-187AA
Figure 8-Lead Mini Small Outline Package [MSOP] (RM-8) Dimensions shown millimeters
Figure 8-Lead Lead Frame Chip Scale Package [LFCSP] Body (CP-8) Dimensions shown millimeters
ORDERING GUIDE
Model ADG918BRM ADG918BRM-500RL7 ADG918BRM-REEL ADG918BRM-REEL7 ADG918BRMZ1 ADG918BRMZ-REEL1 ADG918BRMZ-REEL71 ADG918BCP-500RL7 ADG918BCP-REEL7 ADG919BRM ADG919BRM-500RL7 ADG919BRM-REEL ADG919BRM-REEL7 ADG919BCP-500RL7 ADG919BCP-REEL7 EVAL-ADG918EB EVAL-ADG919EB
Temperature Range -40°C +85°C -40°C +85°C -40°C +85°C -40°C +85°C -40°C +85°C -40°C +85°C -40°C +85°C -40°C +85°C -40°C +85°C -40°C +85°C -40°C +85°C -40°C +85°C -40°C +85°C -40°C +85°C -40°C +85°C
Package Description Mini Small Outline Package (MSOP) Mini Small Outline Package (MSOP) Mini Small Outline Package (MSOP) Mini Small Outline Package (MSOP) Mini Small Outline Package (MSOP) Mini Small Outline Package (MSOP) Mini Small Outline Package (MSOP) Lead Frame Chip Scale Package (LFCSP) Lead Frame Chip Scale Package (LFCSP) Mini Small Outline Package (MSOP) Mini Small Outline Package (MSOP) Mini Small Outline Package (MSOP) Mini Small Outline Package (MSOP) Lead Frame Chip Scale Package (LFCSP) Lead Frame Chip Scale Package (LFCSP) Evaluation Board Evaluation Board
Package Option RM-8 RM-8 RM-8 RM-8 RM-8 RM-8 RM-8 CP-8 CP-8 RM-8 RM-8 RM-8 RM-8 CP-8 CP-8
Branding
Pb-free part.
Rev. Page
ADG918/ADG919 NOTES
Rev. Page
ADG918/ADG919 NOTES
2004 Analog Devices, Inc. rights reserved. Trademarks registered trademarks property their respective owners. C03335-0-9/04(A)
Rev. Page

Wideband switch: Absorptive/reflective switches High isolation GHz) in

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