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DBS
Functional Diagram
General Description
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.
14
SWITCHES - SMT
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.
Electrical Speci鏗乧ations,
T
A
= +25擄 C, Vdd= +5V, 50 Ohm System
Parameter
Insertion Loss
Frequency
700 - 3000 MHz
700 - 950 MHz
950 - 1450 MHz
1450 - 2150 MHz
2150 - 3000 MHz
700 - 3000 MHz
700 - 3000 MHz
700 - 3000 MHz
700 - 3000 MHz
Min.
Typ.
6.0
Max.
7.0
Units
dB
dB
dB
dB
dB
dB
dB
dBm
dBm
Isolation
34
38
See OP1/2 Isolation Tables
29
33
25
30
10
9
31
22
15
14
37
26
Return Loss (Input; VL, HL, VH, HH)
Return Loss (Output; OP1, OP2)
Output IP3
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
14 - 150
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