ANALOG DEVICES Wideband 4 GHz 36 dB Isolation at 1 GHz CMOS 1.65 V to 2.75 V Dual SPDT ADG936/ADG936-R Manual
Contents
1. TEK RUN HH TRIG D A 2 20mV INx T 5 2 1 al m s zl Pal ie al 2 2 RFCx 1 8 100M 1 1 5 8 10k 100k 1M Mam 00 G 0G 3 CH1 1 00V0 200ns E 9181 00 5 Figure 13 Return Loss vs Frequency 11 Figure 16 Video Feedthrough 10 20 30 ao 40 5 50 5 9 d 60 70 80 Vpp 2 5V 25 C 10k 100k 1M 10M 100M 1G 10G 5 100 200 300 400 500 600 700 800 900 5 2 3 FREQUENCY MHz amp Figure 14 Crosstalk vs Frequency 512 and 521 Figure 17 IPs vs Frequency TEK RUN 5 00GS s ET ENVELOPE 5 4 dBm 2 0 250 500 750 1000 1250 1500 3 5 FREQUENCY MHz 3 CH1 1 00V CH2 100mV 5 00ns 3 100mV 5 Figure 15 Switch Timing Figure 18 P 1 vs Frequency Rev 0 Page 8 of 16 ADG936 ADG936 R TEST CIRCUITS Similar setup for the ADG936 Additional pins omitted for clarity Vop ADG936 R NETWORK ANALYZER 04503 0 004 ton torr 04503 0 007 INSERTION LOSS 20log Your Figure 19 Switch Timing ton torr Figure 22 Insertion Loss NETWORK ANALYZER 04503 0 005 04503 0 002. high over the dc to 1 GHz frequency range They have on board 2 0 9 dB insertion loss 1 GHz CMOS control logic eliminating the need for external controlling circuitry The control inputs are both CMOS and 3 20 lead TSSOP and 4 mm x 4 mm LFCSP package 10 0 3 Vpp 2 5V 0 5 25 C 20 33 018 3j 30 a 5 33 0 8 15 9 6 Vpp 2 5V 5 5 18 o 50 9 719 9 S21 ic 20 2 1 5 33 34 70 512 2 6 2 7 2 8 919 25 C 80 5 3 0 2 10k 100k 1M 10M 100M 1G 10G 10k 100k 1M 10M 100M 1G 106 FREQUENCY Hz 3 FREQUENCY Hz 3 Figure 3 Off Isolation vs Frequency Figure 4 Insertion Loss vs Frequency Rev 0 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 One Technology Way P O Box 9106 Norwood MA 02062 9106 U S A or otherwise under any patent or patent rights of Analog Devices Trademarks and Tel 781 329 4700 www analog com registered trademarks are the property of their respective owners Fax 781 326 8703 2004 Analog Devices Inc All rights reserved ADG936 ADG93
3. ADG936BCP 500RL 7 0 0 ANALOG _ Wideband 4 GHz 36 dB Isolation at 1 GHz DEVICES CMOS 1 65 V to 2 75 V Dual SPDT ADG936 ADG936 R FEATURES FUNCTIONAL BLOCK DIAGRAMS Wideband switch 3 dB 4 GHz ADG936 absorptive dual SPDT ADG936 R reflective dual SPDT High off isolation 36 dB 1 GHz Low insertion loss 0 9 dB dc to 1 GHz Single 1 65 to 2 75 V power supply CMOS LVTTL control logic 20 lead TSSOP and 4 mm x 4 mm LFCSP package Low power consumption 1 pA max APPLICATIONS Wireless communications General purpose RF switching Dual band applications High speed filter selection Digital transceiver front end switch 04503 0 001 04503 0 012 IF switching Figure 1 Figure 2 Tuner modules Antenna diversity switching GENERAL DESCRIPTION The ADG936 ADG936 R are wideband analog switches that LVTTL compatible The low power consumption of these CMOS devices makes them ideally suited for wireless comprise two independently selectable SPDT switches using a applications and general purpose high frequency switching CMOS process to provide high isolation and low insertion loss to 1 GHz The ADG936 is an absorptive matched dual SPDT PRODUCT HIGHLIGHTS with 50 Q terminated shunt legs the ADG936 R is a reflective dual SPDT These devices are designed such that the isolation is
4. RU 20 ADG936BRU REEL7 40 to 85 C Thin Shrink Small Outline Package TSSOP RU 20 ADG936BCP 40 to 85 C Lead Frame Chip Scale Package LFCSP CP 20 1 ADG936BCP 500RL7 40 to 85 C Lead Frame Chip Scale Package LFCSP CP 20 1 ADG936BCP REEL 40 to 85 C Lead Frame Chip Scale Package LFCSP CP 20 1 ADG936BCP REEL7 40 to 85 C Lead Frame Chip Scale Package LFCSP CP 20 1 ADG936BRU R 40 to 85 C Thin Shrink Small Outline Package TSSOP RU 20 ADG936BRU R 500RL7 40 to 85 C Thin Shrink Small Outline Package TSSOP RU 20 ADG936BRU R REEL 40 to 85 C Thin Shrink Small Outline Package TSSOP RU 20 ADG936BRU R REEL7 40 to 85 C Thin Shrink Small Outline Package TSSOP RU 20 ADG936BCP R 40 to 85 C Lead Frame Chip Scale Package LFCSP CP 20 1 ADG936BCP R 500RL7 40 to 85 C Lead Frame Chip Scale Package LFCSP CP 20 1 ADG936BCP R REEL 40 to 85 C Lead Frame Chip Scale Package LFCSP CP 20 1 ADG936BCP R REEL7 40 to 85 C Lead Frame Chip Scale Package LFCSP CP 20 1 EVAL ADG936EB Evaluation Board RU 20 EVAL ADG936 REB Evaluation Board RU 20 Rev 0 Page 14 of 16 ADG936 ADG936 R NOTES Rev 0 15 of 16 ADG936 ADG936 R NOTES 2004 Analog Devices Inc All rights reserved Trademarks and ANALOG registered trademarks are the property of their respective owners www analo g com Lal DEVICES Rev 0 Page 16
5. 19 23 dB 1000 MHz 16 24 dB Return Loss Off Channel 511 522 DC to 100 MHz 18 24 dB 500 MHz 17 23 dB 1000 MHz 16 21 dB On Switching ton 50 CTRL to 90 RF 11 14 ns Off Switching Time torr 50 CTRL to 10 RF 10 13 ns Rise 10 to 90 RF 6 1 8 ns Fall Time trALL 9096 to 1096 RF 6 8 ns 1 dB Compression 1000 MHz 16 dBm Third Order Intermodulation Intercept IP3 900 MHz 901 MHz 4 dBm 29 32 dBm Video Feedthrough 3 mV p p DC ELECTRICAL CHARACTERISTICS Input High Voltage 2 25 V to 2 75 V 1 7 V 1 65 V to 1 95 V 0 65 Vcc V Input Low Voltage Vint 2 25 V to 2 75 V 0 7 V 1 65 V to 1 95 0 35 V Input Leakage Current 0 lt lt 2 75 0 1 1 CAPACITANCE RF Port On Capacitance f 1 MHz 2 5 pF Digital Input Capacitance 1 MHz 2 pF POWER REQUIREMENTS 1 65 2 75 V Quiescent Power Supply Current Digital inputs 0 V or 0 1 1 Temperature range B Version 40 to 85 2 Typical values are at Voo 2 5 V 25 C unless otherwise noted 3 Operating frequency is the point at which insertion loss degrades by 1 dB Guaranteed by design not subject to production test 5 Video feedthrough is the dc transience at the output of any port of the switch when the control voltage is switched from high to low or low to high in a 50 test setup measured with 1 ns rise time pulses and 500
6. Tx Rx Switching ANTENNA DIVERSITY SWITCH The ADG936 ADG936 R are ideal for use as antenna diversity switches switching in different antennas to the tuner The low insertion loss which ensures minimum signal loss and high isolation between channels makes these dual SPDT switches suitable for switching applications in tuner modules and set top boxes Rev 0 Page 11 of 16 ADG936 ADG936 R EVALUATION BOARD The ADG936 and ADG936 R evaluation board allows designers to evaluate these high performance wideband switches with minimal effort To prove that these devices meet the user s requirements only power supply and a network analyzer along with the evaluation board are required An application note available with the evaluation board gives complete information on operating the evaluation board The port is connected through 50 transmission line to SMA connector J3 The RFCB port is connected through a 50 transmission line to SMA connector J4 RF1A RF2A RF1B and RF2B are connected through 50 transmission lines to SMA connectors J5 J6 J7 and J8 respectively A through transmission line connects J9 and J10 this transmission line is used to estimate the loss of the PCB over the environmental conditions being evaluated The board is constructed of a four layer FR4 material with a dielectric constant of 4 3 and an overall thickness of 0 062 in Two ground layers with grounded planes provide ground
7. 2 5 13 8 14 B 15 1 5 Vpp 2 50V 9 15 17 17 5 18 18 E 120 220 23 23 24 2 257 2 4 2 5 2 5 2 6 2 6 2 7 2 7 2 8 2 8 23 25 C o 124 10k 100k 1M 10M 100M 1G 106 4 10M 100M 5 FREQUENCY Hz 3 FREQUENCY Hz 3 Figure 7 Insertion Loss vs Frequency over Supplies Figure 10 Insertion Loss vs Frequency over Temperature 512 S21 512 521 0 3 10 Vpp 1 65V TO 2 75V 25 C 0 4 20 _ 0 5 30 Vpp 2 75V a 2 Vpp 2 50V 5 A 5 o 50 2 25V 521 a 0 8 60 0 9 70 S12 25 5 10k 100k 1M 10M 100M 1G 106 10k 100k 1M 10M 100M 1G 10G FREQUENCY Hz 3 FREQUENCY Hz 3 Figure 8 Insertion Loss vs Frequency over Supplies Figure 11 Isolation vs Frequency over Supplies S12 and S21 Zoomed Figure 7 0 3 10 0 4 93 20 3i 1019 790 1 0 1 95V 2 1 1 _ 40 57515 Vpp 1 807 a 14 LII gt 50 1 5 1 65 16 60 17 48 Q 20 97 9 53 _g9 23 2 5 90 2 6 38 23 25 C 440 10k 100k 1M 10M 100M 1G 106 10k 100k 1M 10M 100M 1G 10G FREQUENCY Hz E FREQUENCY Hz Figure 9 Insertion Loss vs Frequency over Supplies Figure 12 Isolation vs Frequency over Temperature 512 and 521 Rev 0 Page 7 of 16 ADG936 ADG936 R
8. 6 R TABLE OF CONTENTS SPECI CAL ONS 3 Absorptive vs Reflective 11 Absolute Maximum 4 toe E 11 Pin Configurations and Function Descriptions 5 TX RX Swithin g ettet ettet eee 11 Terminology 6 Antenna Diversity Switch sse 11 Typical Performance Characteristics 7 Evaluation Board sees 12 tp ien itat tee eos 9 Outline Dimensions 13 Applications cito b RR e tetas 11 Ordering Guide 14 REVISION HISTORY 7 04 Revision 0 Initial Version Rev 0 Page 2 of 16 ADG936 ADG936 R SPECIFICATIONS 1 65 V to 2 75 GND 0 V Input Power 0 dBm all specifications Tmn to Tmax unless otherwise noted Table 1 B Version Parameter Symbol Conditions Min Typ Max Unit AC ELECTRICAL CHARACTERISTICS Operating Frequency DC 2 GHz dB Frequency 4 GHz Input Power 0 V dc bias 7 dBm 0 5 V dc bias 16 dBm Insertion Loss S21 S12 DC 100 MHz 2 5 V 10 0 4 0 5 dB 500 MHZ 2 5 V 10 0 6 0 8 dB 1000 MHz 2 5 V 10 0 9 1 25 dB Isolation RFCx to RF1x RF2x S21 S12 100 MHz 52 60 dB 500 MHz 40 47 dB 1000 MHz 31 36 dB Crosstalk RF1x to RF2x S21 S12 100 MHz 53 69 dB 500 MHz 42 45 dB 1000 MHz 34 37 dB Return Loss On Channel 511 522 DC to 100 MHz 20 25 dB 500 MHz
9. 8 V CROSSTALK 20log Ve Figure 23 Crosstalk OSCILLOSCOPE NETWORK ANALYZER 04503 0 006 V OFF ISOLATION 20log y 04503 0 009 Figure 21 Off Isolation Figure 24 Video Feedthrough Rev 0 Page 9 of 16 ADG936 ADG936 R gt ADG936 R SPECTRUM du ANALYZER 04503 0 010 04503 0 011 Figure 25 IP3 Figure 26 1 Rev 0 Page 10 16 APPLICATIONS The ADG936 ADG936 R are ideal solutions for low power high frequency applications The low insertion loss high isolation between ports low distortion and low current consumption of these parts make them excellent solutions for many high frequency switching applications They can be used in applications such as switchable filters transmitters and receivers for radar systems and communication systems from base stations to cell phones The ADG9xx family of wideband switches is designed to meet the demands of devices transmitting at ISM band frequencies to 1 GHz and higher The low insertion loss high isolation between ports single pin control interface no requirement for dc blocking capacitors and TTL interface compatibility make them cost effective and easy to integrate switching solutions for many high frequency switching and low power applications because the parts can handle up to 16 dBm of power ABSORPTIVE VS REFLECTIVE The ADG936 is an absorptive matched switch with 50 terminated shunt legs the ADG936 R is a reflec
10. MHz bandwidth Rev 0 Page of 16 ADG936 ADG936 R ABSOLUTE MAXIMUM RATINGS Ta 25 C unless otherwise noted Table 2 Parameter Rating to GND 0 5Vto 44V Inputs to GND 0 5 V to 0 3 V Continuous Current 30mA Input Power 18 dBm Operating Temperature Range Industrial B Version 40 to 85 C Storage Temperature Range 65 C to 150 C Junction Temperature 150 C TSSOP Package Thermal Impedance 143 C W LFCSP Package Os Thermal Impedance 4 layer board 30 4 C W Lead Temperature Soldering 10 s 300 C IR Reflow Peak Temperature lt 20 s 235 C ESD 1kV Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device This is a stress rating only and functional operation of the device at these or any other conditions above those listed in the operational sections of this specification is not implied Exposure to absolute maximum rating conditions for extended periods may affect device reliability Only one absolute maximum rating may be applied at any one time Table 3 Truth Table INx RF1x RF2x 0 Off On 1 On Off ESD CAUTION 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 this product features proprietary ESD protection circuitry permanent damage may occur on devices subjecte
11. d to high energy electrostatic discharges Therefore proper ESD precautions are recommended to avoid performance degradation or loss of functionality 1 RF1x RF2x Off Port Inputs to Ground 0 5 V to Voo 0 5 V Ewa ESD SENSITIVE DEVICE Rev 0 Page 4 of 16 PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS Figure 5 20 Lead TSSOP RU 20 Table 4 Pin Function Descriptions 04503 0 002 18 RFCA 17 GND 16 INA a za gt oo ADG936 ADG936 R TOP VIEW Not to Scale INB 10 o a z RFCB 8 on ADG936 ADG936 R 04503 0 003 Figure 6 20 Lead 4 mm x 4 mm LFCSP CP 20 Pin No 20 Lead 20 Lead TSSOP LFCSP Mnemonic Function 1 18 RFCA Common RF Port for Switch A 2 19 Power Supply Input These parts can be operated from 1 65 V to 2 75 V should be decoupled to GND 3 5 6 8 9 1 3 4 6 7 GND Ground Reference Point for All Circuitry on the Part 11 13 15 9 12 13 15 16 18 20 17 20 4 2 Port 7 5 RF1B RF1B Port 10 8 RFCB Common PF Port for Switch B 12 10 INB Logic Control Input 14 11 RF2B RF2B Port 17 14 RF2A RF2A Port 19 16 INA Logic Control Input Rev 0 5 of 16 ADG936 ADG936 R TERMINOLOGY Table 5 Parameter Description Most Positive Power Supply Potential Positive Supply Current GND Ground 0 V Reference INx Logic Control Inp
12. for the RF transmission lines The transmission lines were designed using a coplanar waveguide with ground plane model using a trace width of 0 024 in clearance to ground plane of 0 008 in dielectric thickness of 0 02 in and a metal thickness of 0 0021 in 20 VOD us ANALOG DEVICES Eval ADG936R 936EB Rev J d K1 Eval ADG936R 936EB Component Side View Figure 29 ADG936 and ADG936 R Evaluation Board Top View Rev 0 Page 12 of 16 ADG936 ADG936 R OUTLINE DIMENSIONS 0 15 20 MAX 0 20 0 05 y 009 0 7 T vie 0 60 COPLANARITY 0 19 SEATING 945 0 10 PLANE COMPLIANT TO JEDEC STANDARDS MO 153AC Figure 30 20 Lead Thin Shrink Small Outline Package TSSOP RU 20 Dimensions shown in millimeters PIN 1 INDICATOR 0 80 MAX 1 00 0 65 TYP 0 85 0 05 MAX 0 85 0 05 Ie pte x SEATING X 0201 COPLANARITY BSC nr 0 08 12 MAX PLANE COMPLIANT TO JEDEC STANDARDS MO 220 VGGD 1 Figure 31 20 Lead Lead Frame Chip Scale Package LFCSP 4 mm x 4 mm Body CP 20 1 Dimensions shown in millimeters Rev 0 Page 13 of 16 ADG936 AD6936 R ORDERING GUIDE Model Temperature Range Package Description Package Option ADG936BRU 40 to 85 C Thin Shrink Small Outline Package TSSOP RU 20 ADG936BRU 500RL7 40 to 85 C Thin Shrink Small Outline Package TSSOP RU 20 ADG936BRU REEL 40 to 85 C Thin Shrink Small Outline Package TSSOP
13. lative to the Incident Power at a Port Large return loss indicates good matching By measuring return loss the VSWR can be calculated from conversion charts VSWR voltage standing wave ratio indicates the degree of matching present at a switch RF port Spurious Signals Present at the RF Ports of the Switch when the Control Voltage Is Switched from High to Low or Low to High without an RF Signal Present Rev 0 Page 6 of 16 ADG936 ADG936 R TYPICAL PERFORMANCE CHARACTERISTICS 0 3 0 3 0 4 0 4 0 5 0 5 0 6 0 6 0 7 0 7 0 8 0 8 43 Vpp 2 75V 210 id an g 3 5 13
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15. tive switch with 0 terminated shunts to ground The ADG936 absorptive switch has a good VSWR on each port regardless of the switch mode An absorptive switch should be used when there is a need for a good VSWR that is looking into the port but not passing the through signal to the common port The ADG936 is therefore ideal for applications that require minimum reflections back to the RF source It also ensures that the maximum power is transferred to the load The ADG936 R reflective switch is suitable for applications in which high off port VSWR does not matter and the switch has some other desired performance features It can be used in many applications including high speed filter selection In most cases an absorptive switch can be used instead of a reflective switch but not vice versa ADG936 ADG936 R FILTER SELECTION The ADG936 and ADG936 R can be used to switch high frequency signals between different filters and to multiplex the signal to the output These dual SPDT switches are also ideal for high speed signal routing and for switching high speed differential signals 04504 0 013 Figure 27 Filter Selection Tx Rx SWITCHING The low insertion loss and high isolation between ports ensure that the ADG936 ADG936 R are suitable transmit receive switches for all ISM band and Wireless LAN applications providing the required isolation between the transmit and receive signals ANTENNA 04504 0 014 Figure 28
16. ut Vint Maximum Input Voltage for Logic 0 Minimum Input Voltage for Logic 1 line lina Input Current of the Digital Input Digital Input Capacitance ton Delay between Applying the Digital Control Input and the Output Switching On torr Delay between Applying the Digital Control Input and the Output Switching Off tnis Rise Time Time for the RF signal to rise from 1096 of the On level to 9096 of the On level trALL Fall Time Time for the RF signal to fall from 9096 of the On level to 1096 of the On level Off Isolation The Attenuation between Input and Output Ports of the Switch when the Switch Control Voltage Is in the Off Condition Insertion Loss The Attenuation between Input and Output Ports of the Switch when the Switch Control Voltage Is in the On Condition Crosstalk Measure of Unwanted Signal Coupled through from One Channel to Another as a Result of Parasitic Capacitance 1 dB Compression Point The input power level at which the switch insertion loss increases by 1 dB over its low level value P ae is a measure of how much power the On switch can handle before the insertion loss increases by 1 dB IPs Third Order Intermodulation Intercept This is a measure of the power in false tones that occurs when closely spaced Return Loss Video Feedthrough tones are passed through a switch whereby the nonlinearity of the switch causes these false tones to be generated The Amount of Reflected Power Re
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ANALOG DEVICES Wideband 4 GHz 36 dB Isolation at 1 GHz CMOS 1.65 V to 2.75 V Dual SPDT ADG936/ADG936