SWITCHES - SMT
10
10 - 158
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
General Description
Features
Functional Diagram
The HMC276QS24 & HMC276QS24E are low-cost
4x2 switch matrix in a 24-lead QSOP package for use
in RF multiplexing applications from 700 to 3000 MHz.
A positive voltage controlled 4 bit decoder is inte-
grated 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 simul-
taneously select the same inputs. Note that the switch
is bi-directional and input/output functionality may be
interchanged. The recommended loading impedance
is 62.5 ohms on each input (HH, HL, VH, VL) and
75 ohms on each output (OP1 & OP2). All data pre-
sented was measured in a 50 ohm (input/output)
system.
Available as Lead Free
4x2 Switch Matrix Using One IC
4x4 Switch Matrix Using Two ICs
Integrated 4 Bit Decoder
Single Positive Supply: Vdd = +5V
Electrical Speci cations, TA = +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
36
32
26
40
36
31
dB
dB
dB
dB
Return Loss (Input; VL, HL, VH, HH) 700 - 3000 MHz 12 16 dB
Return Loss (Output; OP1, OP2) 700 - 3000 MHz 11 15 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
GaAs MMIC 4x2 SWITCH
MATRIX, 0.7 - 3.0 GHz
v05.1105
HMC276QS24 / 276QS24E
SWITCHES - SMT
10
10 - 159
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
Return Loss Typical Insertion Loss vs. Temperature
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)
Ty p.
(dB)
HL to OP1 VL to OP1
All Other States
9
All Other States
36
40
38
>43
VL to OP1 All Other States All States 40 >43
VH to OP1 All Other States All States 40 >43
HH to OP1
VL to OP1
VL to OP1
HL to OP1
All Other States
13
16
15
All Other States
39
40
39
40
41
42
41
>43
Input to
Output State
Interfering
Signal State Min.
(dB)
Ty p.
(dB)
HL to OP2 All States All States 40 >43
VH to OP2
HL to OP2
HL to OP2
VL to OP2
All Other States
10
6
2
All Other States
38
39
39
40
40
41
41
>43
VL to OP2 HL to OP2
All Other States
9
All Other States
36
40
38
>43
HH to OP2 All States All States 40 >43
GaAs MMIC 4x2 SWITCH
MATRIX, 0.7 - 3.0 GHz
HMC276QS24 / 276QS24E
-10
-8
-6
-4
-2
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
-8
-6
-4
-2
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
-8
-6
-4
-2
0
0.5 1 1.5 2 2.5 3 3.5 4
+25 C
+85 C
-40 C
INSERTION LOSS (dB)
FREQUENCY (GHz)
v05.1105
SWITCHES - SMT
10
10 - 160
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
* 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*
-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
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
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)
-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 (state 7)
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
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
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)
GaAs MMIC 4x2 SWITCH
MATRIX, 0.7 - 3.0 GHz
HMC276QS24 / 276QS24E
v05.1105
SWITCHES - SMT
10
10 - 161
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
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
-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)
-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)
GaAs MMIC 4x2 SWITCH
MATRIX, 0.7 - 3.0 GHz
HMC276QS24 / 276QS24E
v05.1105
SWITCHES - SMT
10
10 - 162
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
DC Blocking And Decoupling Capacitors
The HMC276QS24(E) requires DC blocks on all 6 RF ports (OP1, OP2, VL, HL, VH, HH). Characterization on the
HMC276QS24(E) was done using 0603 size 330pF capacitors on all RF ports. A 0.01μF DC decoupling capacitor
(0603 size) is recommended for the Vdd pin.
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 1.5
State Bias Condition
Low (0) 0 to 0.8 Vdc @ 5 μA Typical
High (1) +2.0 to +5.0 Vdc @ 25 μA Typical
GaAs MMIC 4x2 SWITCH
MATRIX, 0.7 - 3.0 GHz
HMC276QS24 / 276QS24E
v05.1105
SWITCHES - SMT
10
10 - 163
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
Absolute Maximum Ratings
Bias Voltage Range (Vdd) +8.0 Vdc
Control Voltage Range
(All Logic Lines) Vdd +0.5 to -0.2V Vdc
Channel Temperature 150 °C
Thermal Resistance 325 °C/W
Storage Temperature -65 to +150 °C
Operating Temperature -40 to +85 °C
Maximum Input Power +23 dBm (700 - 2150 MHz)
Outline Drawing
NOTES:
1. LEADFRAME MATERIAL: COPPER ALLOY
2. DIMENSIONS ARE IN INCHES [MILLIMETERS].
3. DIMENSION DOES NOT INCLUDE MOLDFLASH OF 0.15mm PER SIDE.
4. DIMENSION DOES NOT INCLUDE MOLDFLASH OF 0.25mm PER SIDE.
5. ALL GROUND LEADS MUST BE SOLDERED TO PCB RF GROUND.
Part Number Package Body Material Leadframe Plating MSL Rating Package Marking [3]
HMC276QS24 Low Stress Injection Molded Plastic Silica
and Silicon Impregnated Sn/Pb Solder MSL1 [1] HMC276
XXXX
HMC276QS24E RoHS-compliant Low Stress Injection Molded
Plastic Silica and Silicon Impregnated 100% Matte Tin MSL1 [2] HMC276
XXXX
[1] Max peak re ow temperature of 235 °C
[2] Max peak re ow temperature of 260 °C
[3] 4-Digit lot number XXXX
Package Information
GaAs MMIC 4x2 SWITCH
MATRIX, 0.7 - 3.0 GHz
HMC276QS24 / 276QS24E
v05.1105
SWITCHES - SMT
10
10 - 164
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
The HMC276QS24E switch can operate as a 4x4 switch by
connecting the 4 inputs of two switches directly together.
The VL, VH, HL, and HH inputs of the rst switch should be
connected to the second switch, as illustrated.
Mirror image switch performance can be realized by
inverting the HV1 & HV2 logic control signals of one of the
HMC276QS24E switches.
The input loading impedance of two switches in parallel should
be 31.25 ohms. The output loading impedance on each output
should be 75 ohms. The interconnect RF line between the
switch’s inputs should be an RF trace with a characteristic
impedance of 62.5 ohms. This will allow the switch to remain
matched in all possible switch states.
The HMC276QS24E does not provide output to output
(OP1 to OP2) isolation. For this reason, It is recommended
that external ampli ers should be used at each output. The ampli er’s reverse isolation will provide output to output
isolation, if this is necessary.
Each HMC276QS24E requires DC blocking capacitors on ALL RF input and output ports.
Switch Application Circuit for 4x4 Switch Matrix
GaAs MMIC 4x2 SWITCH
MATRIX, 0.7 - 3.0 GHz
HMC276QS24 / 276QS24E
v05.1105
SWITCHES - SMT
10
10 - 165
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
Evaluation PCB
The circuit board used in the nal application should be generated with proper RF circuit design techniques.
Signal lines at the RF port should have 50 ohm impedance and the package ground leads should be connected
directly to the ground plane similar to that shown above. A generous number of ground vias should be used
to interconnect top/bottom ground planes. The evaluation circuit board shown above is available from Hittite
Microwave Corporation upon request.
Multi Pin DC Interface (J1)
Item Description
J2 - J7 PC Mount SMA RF Connector
J1 DC Pin
C1 - C6 100 pF Capacitor, 0402 Pkg.
U1 HMC276QS24 / HMC276QS24E
4x2 Switch Matrix
PCB [2] 102945 Eval Board
[1] Reference this number when ordering complete evaluation PCB
[2] Circuit Board Material: Rogers 4350
Pin Line
1Vdd
2HV1
3GND
4HV2
5GND
6Tone1
7N/C
8N/C
9Tone2
GaAs MMIC 4x2 SWITCH
MATRIX, 0.7 - 3.0 GHz
HMC276QS24 / 276QS24E
List of Materials for Evaluation PCB 102924 [1]
v05.1105
