HMC276QS24 / 276QS24E
v06.0409
GaAs MMIC 4x2 SWITCH
MATRIX, 0.7 - 3.0 GHz
Typical Applications
Features
4x2 Switch Matrix for 0.7 - 3.0 GHz Applications:
Available as Lead Free
• Cable Modem
• CATV
4x2 Switch Matrix Using One IC
4x4 Switch Matrix Using Two ICs
Integrated 4 Bit Decoder
• Cellular Systems
• DBS
Single Positive Supply: Vdd = +5V
General Description
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.
12
Electrical Specifications, TA = +25° C, Vdd= +5V, 50 Ohm System
Parameter
Insertion Loss
Frequency
Min.
Typ.
6.0
40
Max.
7.0
Units
dB
700 - 3000 MHz
700 - 950 MHz
950 - 1450 MHz
1450 - 2150 MHz
2150 - 3000 MHz
36
dB
dB
dB
dB
See OP1/2 Isolation Tables
Isolation
32
26
36
31
Return Loss (Input; VL, HL, VH, HH)
Return Loss (Output; OP1, OP2)
Output IP3
700 - 3000 MHz
700 - 3000 MHz
700 - 3000 MHz
700 - 3000 MHz
12
11
31
22
16
15
37
26
dB
dB
dBm
dBm
Input Power for 1 dB Compression
Switching Speed
tRISE / tFALL (10/90% RF)
tON / tOFF (50% CTL to 10/90% RF)
700 - 3000 MHz
140
350
ns
ns
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
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