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Product Data Sheet
SP4T FET Switch
TGS8422-SCC
Key Features and Performance
* * * * * * DC to18 GHz Frequency Range 2.5 dB Insertion Loss at Midband 37 dB Isolation at Midband Typical Input Power of 19 dBm at 1 dB Gain Compression Typical SWR of 1.6:1 2.286 x 2.057 x 0.150 mm (0.090 x 0.081x 0.006 in.)
Description
The TriQuint TGS8422-SCC is a GaAs MMIC SP4T FET switch which operates from DC to 18 GHz. RF Output arm selection is made through 8 control lines. Control bias voltages are 0 V and -5 V. Typical insertion loss is 2.5 dB at 9 GHz. Isolation is typically 37 dB from RF Input to RF Outputs 0, 3 and 47 dB from RF Outputs 1 and 2. The input and output return loss is typically 13 dB. The reflective, single-pole, four-throw design utilizes one series and four shunt FETs in each RF Output arm to produce a broadband, low-loss, high-isolation switch. The monolithic construction simplifies the assembly process and makes this device useful for electronic warfare, radar and telecommunication applications. Bond pad and backside metallization is gold plated for compatibility with eutectic alloy attachment methods as well as thermocompression and thermosonic wire-bonding processes. Ground is provided to the circuitry through vias to the backside metallization.
TriQuint Semiconductor Texas : (972)994 8465
Fax: (972)994 8504 Web: www.triquint.com
1
Product Data Sheet TGS8422-SCC
TriQuint Semiconductor Texas : (972)994 8465
Fax: (972)994 8504 Web: www.triquint.com
2
Product Data Sheet TGS8422-SCC
TriQuint Semiconductor Texas : (972)994 8465
Fax: (972)994 8504 Web: www.triquint.com
3
Product Data Sheet TGS8422-SCC
TYPICAL S-PARAMETERS RF Input to RF Output 3
Frequency (GHz) MAG S 11 ANG() MAG S 21 ANG() MAG S 12 ANG() MAG S 22 ANG()
In s e rtio n Lo s s
(dB)
0 .5 1 .0 2 .0 3 .0 4 .0 5 .0 6 .0 7 .0 8 .0 9 .0 1 0 .0 1 1 .0 1 2 .0 1 3 .0 1 4 .0 1 5 .0 1 6 .0 1 7 .0 1 8 .0
0 .1 8 0 .1 8 0 .2 0 0 .2 1 0 .2 2 0 .2 2 0 .1 8 0 .2 1 0 .2 6 0 .2 5 0 .2 0 0 .2 2 0 .2 7 0 .2 5 0 .2 1 0 .2 6 0 .2 8 0 .1 9 0 .1 8
-3 - 13 - 30 - 44 - 51 - 56 - 78 - 124 - 139 - 132 - 131 - 167 161 151 162 170 159 137 115
0 .8 0 5 0 .8 0 1 0 .7 9 7 0 .7 9 0 0 .7 8 4 0 .7 8 4 0 .7 9 1 0 .7 7 6 0 .7 4 9 0 .7 4 2 0 .7 4 6 0 .7 4 7 0 .7 2 1 0 .7 0 6 0 .7 0 0 0 .6 9 7 0 .7 0 7 0 .7 0 9 0 .6 7 3
-9 - 16 - 30 - 45 - 59 - 74 - 89 - 106 - 121 - 135 - 150 - 166 178 163 148 134 118 101 83
0 .8 0 6 0 .8 0 2 0 .7 9 8 0 .7 9 1 0 .7 8 5 0 .7 8 6 0 .7 9 3 0 .7 7 8 0 .7 5 1 0 .7 4 3 0 .7 4 6 0 .7 4 8 0 .7 2 3 0 .7 0 7 0 .7 0 2 0 .6 9 8 0 .7 0 9 0 .7 0 8 0 .6 7 4
-8 - 15 - 30 - 45 - 59 - 74 - 89 - 106 - 121 - 135 - 150 - 166 178 163 148 134 119 101 83
0 .1 7 0 .1 7 0 .1 7 0 .1 7 0 .1 6 0 .1 5 0 .1 4 0 .1 4 0 .1 3 0 .1 2 0 .1 4 0 .1 0 0 .1 4 0 .1 8 0 .1 8 0 .1 7 0 .1 4 0 .1 7 0 .2 4
-1 -5 - 21 - 38 - 45 - 53 - 87 - 141 - 162 - 146 - 148 164 112 119 137 156 156 110 93
1 .9 1 .9 2 .0 2 .0 2 .1 2 .1 2 .0 2 .2 2 .5 2 .6 2 .5 2 .5 2 .8 3 .0 3 .1 3 .1 3 .0 3 .0 3 .4
TA = 25oC
TYPICAL S-PARAMETERS RF Input to RF Output 2
Frequency (GHz) MAG
S 11 ANG() MAG
S 21 ANG() MAG
S 12 ANG() MAG
S 22 ANG()
Ins e rtion Los s
(dB)
0 .5 1 .0 2 .0 3 .0 4 .0 5 .0 6 .0 7 .0 8 .0 9 .0 1 0 .0 1 1 .0 1 2 .0 1 3 .0 1 4 .0 1 5 .0 1 6 .0 1 7 .0 1 8 .0
0 .1 8 0 .1 8 0 .1 9 0 .2 1 0 .2 3 0 .2 1 0 .1 4 0 .1 6 0 .2 5 0 .2 5 0 .1 9 0 .1 9 0 .2 5 0 .2 3 0 .2 5 0 .3 0 0 .3 1 0 .2 5 0 .2 8
-3 - 12 - 27 - 40 - 49 - 56 - 71 - 110 - 128 - 125 - 118 - 146 177 169 - 179 179 170 160 133
0 .8 0 3 0 .7 9 8 0 .7 9 4 0 .7 8 8 0 .7 8 4 0 .7 8 3 0 .7 8 3 0 .7 7 4 0 .7 5 3 0 .7 3 8 0 .7 3 9 0 .7 3 5 0 .7 2 5 0 .7 1 2 0 .7 0 4 0 .6 9 5 0 .6 9 7 0 .6 9 8 0 .6 6 4
-9 - 16 - 32 - 47 - 62 - 78 - 93 - 110 - 125 - 140 - 155 - 171 173 157 142 127 111 93 75
0 .8 0 4 0 .8 0 0 0 .7 9 6 0 .7 8 9 0 .7 8 5 0 .7 8 5 0 .7 8 5 0 .7 7 6 0 .7 5 5 0 .7 3 9 0 .7 3 8 0 .7 3 8 0 .7 2 7 0 .7 1 3 0 .7 0 6 0 .6 9 5 0 .7 0 1 0 .6 9 4 0 .6 6 5
-9 - 16 - 31 - 47 - 62 - 77 - 93 - 109 - 125 - 140 - 155 - 171 173 158 142 127 111 94 76
0 .1 7 0 .1 8 0 .1 8 0 .1 7 0 .1 5 0 .1 5 0 .1 9 0 .1 5 0 .0 7 0 .0 9 0 .1 8 0 .1 3 0 .0 7 0 .1 0 0 .1 6 0 .1 9 0 .1 8 0 .2 5 0 .2 7
1 5 18 31 40 60 90 110 126 140 146 164 145 148 169 174 158 129 125
1 .9 2 .0 2 .0 2 .1 2 .1 2 .1 2 .1 2 .2 2 .5 2 .6 2 .6 2 .7 2 .8 3 .0 3 .0 3 .2 3 .1 3 .1 3 .6
TA = 25oC Reference planes for S-parameter data include bond wires as specified in "Recommended Bias Network".
TriQuint Semiconductor Texas : (972)994 8465
Fax: (972)994 8504 Web: www.triquint.com
4
Product Data Sheet TGS8422-SCC
RF CHARACTERISTICS
IL ISO SWR(in ) SWR(o u t ) P1 d B(in )
P ARAMETER TES T CONDITIONS TYP UNIT
In s ert io n lo s s Is o lat io n In p u t s t an d in g wave rat io Ou t p u t s t an d in g wave rat io In p u t p o wer at 1 d B g ain co m p res s io n
m id b an d m id b an d t h ro u g h s elect ed o u t p u t arm
2 .5 37 1 .6 :1 1 .3 :1 19
dB dB d Bm
TRUTH TABLE
S elected RF Output
CONTROL VOLTAGES (VOLTS )
V1 0 -5 -5 -5
V2 -5 0 0 0
V3 -5 -5 0 -5
V4 0 0 -5 0
V5 -5 0 -5 -5
V6 0 -5 0 0
V7 -5 -5 -5 0
V8 0 0 0 -5
RF Ou t p u t 0 RF Ou t p u t 1 RF Ou t p u t 2 RF Ou t p u t 3
EQUIVALENT SCHEMATIC
TriQuint Semiconductor Texas : (972)994 8465
Fax: (972)994 8504 Web: www.triquint.com
5
Product Data Sheet TGS8422-SCC
RECOMMENDED BIAS NETWORK
________________________________________________________________________________________
V1 V2 V3 V4 V5 V6 V7 V8 4 RF Output 2 3 56 7 8 9 10 11 12 RF Output 1
RF Output 0
2
TGS8422
13
RF Output 3
1 RF Input
Refer to TriQuint Gallium Arsenide Products Designers' Information on TriQuint's web site.
GaAs MMIC devices are susceptible to damage from Electrostatic Discharge. Proper precautions should be observed during handling, assembly and test.
TriQuint Semiconductor Texas : (972)994 8465
Fax: (972)994 8504 Web: www.triquint.com
6

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