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14 - 150
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12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
SWITCHES - SMT
14
HMC276QS24
GaAs MMIC 4x2 SWITCH
MATRIX, 0.7 - 3.0 GHz
v04.0701
General Description
Features
Functional Diagram
The HMC276QS24 is a low-cost 4x2 switch matrix
in a 24-lead QSOP package for use in RF multiplex-
ing applications from 700 to 3000 MHz. A positive
voltage controlled 4 bit decoder is integrated on the
switch. The switch may be used in either 75 ohm or
50 ohm systems.
Both switch outputs (OP1 & OP2) can independently
select any of the four inputs (HH, HL, VH, VL) or
simultaneously select the same inputs. Note that
the switch is bi-directional and input/output function-
ality may be interchanged. The recommended load-
ing impedance is 62.5 ohms on each input (HH,
HL, VH, VL) and 75 ohms on each output (OP1
& OP2). All data presented was measured in a 50
ohm (input/output) system.
4x2 Switch Matrix Using One IC
4x4 Switch Matrix Using Two ICs
Integrated 4 Bit Decoder
Single Positive Supply: Vdd = +5V
Electrical Specifi cations,
T
A
= +25 C, Vdd= +5V, 50 Ohm System
Typical Applications
4x2 Switch Matrix for 0.7 - 3.0 GHz Applications:
Cable Modem
CATV
Cellular Systems
DBS
Parameter
Frequency
Min.
Typ.
Max.
Units
Insertion Loss
700 - 3000 MHz
6.0
7.0
dB
Isolation
700 - 950 MHz
950 - 1450 MHz
1450 - 2150 MHz
2150 - 3000 MHz
34
29
25
38
33
30
dB
dB
dB
dB
Return Loss (Input; VL, HL, VH, HH)
700 - 3000 MHz
10
15
dB
Return Loss (Output; OP1, OP2)
700 - 3000 MHz
9
14
dB
Output IP3
700 - 3000 MHz
31
37
dBm
Input Power for 1 dB Compression
700 - 3000 MHz
22
26
dBm
Switching Speed
tRISE / tFALL (10/90% RF)
tON / tOFF (50% CTL to 10/90% RF)
700 - 3000 MHz
140
350
ns
ns
See OP1/2 Isolation Tables
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12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
14
SWITCHES - SMT
-10
-9
-8
-7
-6
-5
-4
-3
-2
-1
0
0.5
1
1.5
2
2.5
3
3.5
4
VL to OP1 (state 1)
VL to OP1 (state 2)
VH to OP1 (state 5)
VH to OP1 (state 6)
HL to OP1 (state 11)
HL to OP1 (state 12)
HH to OP1 (state 15)
HH to OP1 (state 16)
INSERTION LOSS (dB)
FREQUENCY (GHz)
-10
-9
-8
-7
-6
-5
-4
-3
-2
-1
0
0.5
1
1.5
2
2.5
3
3.5
4
VL to OP2 (state 1)
VL to OP2 (state 5)
VH to OP2 (state 2)
VH to OP2 (state 6)
HL to OP2 (state 11)
HL to OP2 (state 15)
HH to OP2 (state 12)
HH to OP2 (state 16)
INSERTION LOSS (dB)
FREQUENCY (GHz)
-25
-20
-15
-10
-5
0
0.5
1
1.5
2
2.5
3
3.5
4
Input RL, Input Selected
Input RL, Input Deselected
Output RL
RETURN LOSS (dB)
FREQUENCY (GHz)
-10
-9
-8
-7
-6
-5
-4
-3
-2
-1
0
0.5
1
1.5
2
2.5
3
3.5
4
+25C
+85C
-40C
INSERTION LOSS (dB)
FREQUENCY (GHz)
GaAs MMIC SUB-HARMONICALLY PUMPED MIXER 17 - 25 GHz
HMC276QS24
Return Loss
Typical Insertion Loss vs. Temperature
GaAs MMIC 4x2 SWITCH
MATRIX, 0.7 - 3.0 GHz
v04.0701
Insertion Loss on OP1
Insertion Loss on OP2
OP1 Isolation 950 - 1450 MHz
OP2 Isolation 950 - 1450 MHz
Input to
Output State
Interfering
Signal
State
Min.
(dB)
Typ.
(dB)
HL to OP1
VL to OP1
VL to OP1
All Other States
9
11
All Other States
34
36
40
36
38
>43
VL to OP1
VH to OP1
All Other States
2
All Other States
37
40
40
>43
VH to OP1
VL to OP1
VL to OP1
All Other States
5
6
All Other States
35
37
40
37
40
>42
HH to OP1
VL to OP1
VL to OP1
HL to OP1
13
16
15
35
36
39
37
38
41
Input to
Output State
Interfering
Signal
State
Min.
(dB)
Typ.
(dB)
HL to OP2
HH to OP1
All Other States
15
All Other States
38
40
40
>43
VH to OP2
HL to OP2
HL to OP2
All Other States
10
6
All Other States
34
36
37
37
38
>40
VL to OP2
HL to OP2
HL to OP2
All Other States
9
1
All Other States
34
36
40
36
38
>42
HH to OP2
All Other States
12
16
All Other States
35
38
40
37
40
>42
MICROWAVE CORPORATION
14 - 152
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
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Order Online at www.hittite.com
SWITCHES - SMT
14
HMC276QS24
GaAs MMIC 4x2 SWITCH
MATRIX, 0.7 - 3.0 GHz
v04.0701
-60
-50
-40
-30
-20
-10
0
0.5
1
1.5
2
2.5
3
3.5
4
HH to OP1 (state 11)
HH to OP1 (state 12)
VH to OP1 (state 10)
VL to OP1 (state 11)
VL to OP1 (state 9)
VH to OP1 (state 11)
ISOLATION (dB)
FREQUENCY (GHz)
-60
-50
-40
-30
-20
-10
0
0.5
1
1.5
2
2.5
3
3.5
4
HH to OP1 (state 8)
HL to OP1 (state 6)
HL to OP1 (state 7)
VL to OP1 (state 6)
VL to OP1 (state 5)
HH to OP1 (state 6)
ISOLATION (dB)
FREQUENCY (GHz)
-60
-50
-40
-30
-20
-10
0
0.5
1
1.5
2
2.5
3
3.5
4
HL to OP1 (state 3)
VH to OP1 (state 2)
HH to OP1 (state 1)
HH to OP1 (state 4)
VH to OP1 (state 1)
HL to OP1 (state 1)
ISOLATION (dB)
FREQUENCY (GHz)
-60
-50
-40
-30
-20
-10
0
0.5
1
1.5
2
2.5
3
3.5
4
VL to OP1 (state 16)
VH to OP1 (state 16)
VL to OP1 (state 13)
VH to OP1 (state 14)
HL to OP1 (state 16)
HL to OP1 (state 15)
ISOLATION (dB)
FREQUENCY (GHz)
-60
-50
-40
-30
-20
-10
0
0.5
1
1.5
2
2.5
3
3.5
4
HH to OP2 (state 11)
HH to OP2 (state 15)
VH to OP2 (state7)
VH to OP2 (state 11)
VL to OP2 (state 11)
VL to OP2 (state 3)
ISOLATION (dB)
FREQUENCY (GHz)
-60
-50
-40
-30
-20
-10
0
0.5
1
1.5
2
2.5
3
3.5
4
VH to OP2 (state 1)
VH to OP2 (state 5)
HH to OP2 (state 1)
HH to OP2 (state 13)
HL to OP2 (state 1)
HL to OP2 (state 9)
ISOLATION (dB)
FREQUENCY (GHz)
* Isolation is recorded above insertion loss & measured at output of switch.
Isolation When VL is Connected to OP1*
Isolation When HH is Connected to OP1*
Isolation When HL is Connected to OP1*
Isolation When VH is Connected to OP1*
Isolation When HL is Connected to OP2*
Isolation When VL is Connected to OP2*
MICROWAVE CORPORATION
14 - 153
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
14
SWITCHES - SMT
HMC276QS24
GaAs MMIC 4x2 SWITCH
MATRIX, 0.7 - 3.0 GHz
v04.0701
-60
-50
-40
-30
-20
-10
0
0.5
1
1.5
2
2.5
3
3.5
4
HH to OP2 (state 14)
HL to OP2 (state 6)
VL to OP2 (state 2)
VL to OP2 (state 6)
HH to OP2 (state 6)
HL to OP2 (state 10)
ISOLATION (dB)
FREQUENCY (GHz)
-60
-50
-40
-30
-20
-10
0
0.5
1
1.5
2
2.5
3
3.5
4
HL to OP2 (state 12)
HL to OP2 (state 16)
VH to OP2 (state 8)
VH to OP2 (state 16)
VL to OP2 (state 16)
VL to OP2 (state 4)
ISOLATION (dB)
FREQUENCY (GHz)
Isolation When VH is Connected to OP2*
Isolation When HH is Connected to OP2*
Output Third Order Intercept Point
* Isolation is recorded above insertion loss & measured at output of switch.
Path
State
F1
Pout (dBm)
Pout
Intermod (dBm)
IMR
(dBc)
Output
IP3 (dBm)
VL to OP1
1
-12
-106
94
35
VL to OP2
1
-12
-114
102
39
HL to OP1
11
-12
-108
96
36
HL to OP2
11
-12
-110
98
37
VH to OP1
6
-12
-115
103
39.5
VH to OP2
6
-12
-115
103
39.5
HH to OP1
16
-12
-116
104
40
HH to OP2
16
-12
-114
102
39
Test Conditions
Temperature = +25 C
F1 = 2150 (MHz): -12 dBm at the Output
F2 = 2151 (MHz): -12 dBm at the Output
Vdd = +5V
VCTL Low = 0V, High = +5V
MICROWAVE CORPORATION
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For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order Online at www.hittite.com
SWITCHES - SMT
14
DC Blocking And Decoupling Capacitors
The HMC276QS24 requires DC blocks on all 6 RF ports (OP1, OP2, VL, HL, VH, HH). Characterization on the
HMC276QS24 was done using 0603 size 330pF capacitors on all RF ports. A 0.01
F DC decoupling capacitor (0603
size) is recommended for the Vdd pin.
HMC276QS24
GaAs MMIC 4x2 SWITCH
MATRIX, 0.7 - 3.0 GHz
v04.0701
Truth Table
Control Input
Output
to Input State
RF Path State
State
HV 1
Tone 1
HV 2
Tone 2
OP1
OP2
VL to
OP1
HL to
OP1
VH to
OP1
HH to
OP1
VL to
OP2
HL to
OP2
VH to
OP2
HH to
OP2
1
0
0
0
0
VL
VL
LOSS
ISOL
ISOL
ISOL
LOSS
ISOL
ISOL
ISOL
2
0
0
0
1
VL
VH
LOSS
ISOL
ISOL
ISOL
ISOL
ISOL
LOSS
ISOL
3
0
0
1
0
VL
HL
LOSS
ISOL
ISOL
ISOL
ISOL
LOSS
ISOL
ISOL
4
0
0
1
1
VL
HH
LOSS
ISOL
ISOL
ISOL
ISOL
ISOL
ISOL
LOSS
5
0
1
0
0
VH
VL
ISOL
ISOL
LOSS
ISOL
LOSS
ISOL
ISOL
ISOL
6
0
1
0
1
VH
VH
ISOL
ISOL
LOSS
ISOL
ISOL
ISOL
LOSS
ISOL
7
0
1
1
0
VH
HL
ISOL
ISOL
LOSS
ISOL
ISOL
LOSS
ISOL
ISOL
8
0
1
1
1
VH
HH
ISOL
ISOL
LOSS
ISOL
ISOL
ISOL
ISOL
LOSS
9
1
0
0
0
HL
VL
ISOL
LOSS
ISOL
ISOL
LOSS
ISOL
ISOL
ISOL
10
1
0
0
1
HL
VH
ISOL
LOSS
ISOL
ISOL
ISOL
ISOL
LOSS
ISOL
11
1
0
1
0
HL
HL
ISOL
LOSS
ISOL
ISOL
ISOL
LOSS
ISOL
ISOL
12
1
0
1
1
HL
HH
ISOL
LOSS
ISOL
ISOL
ISOL
ISOL
ISOL
LOSS
13
1
1
0
0
HH
VL
ISOL
ISOL
ISOL
LOSS
LOSS
ISOL
ISOL
ISOL
14
1
1
0
1
HH
VH
ISOL
ISOL
ISOL
LOSS
ISOL
ISOL
LOSS
ISOL
15
1
1
1
0
HH
HL
ISOL
ISOL
ISOL
LOSS
ISOL
LOSS
ISOL
ISOL
16
1
1
1
1
HH
HH
ISOL
ISOL
ISOL
LOSS
ISOL
ISOL
ISOL
LOSS
Control Voltages
HV1, Tone1, HV2, Tone2
Bias Voltage
Vdd Range = +5.0 Vdc 10 %
Vdd
(Vdc)
Idd (Typ.)
(mA)
Idd (Max.)
(mA)
+5.0
1
2
State
Bias Condition
Low (0)
0 to 0.8 Vdc @ 5 A Typical
High (1)
+2.0 to +5.0 Vdc @ 25 A Typical
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