HMC641A
v02.0316
GaAs MMIC SP4T NON-REFLECTIVE
SWITCH, DC - 18 GHz
Features
The HMC641A is ideal for:
SWITCHES - CHIP
Typical Applications
Broadband Performance: DC - 18 GHz
• Telecom Infrastructure
High Isolation: 42 dB @ 12 GHz
• Microwave Radio & VSAT
Low Insertion Loss: 2.1 dB @ 12 GHz
• Military & Space Hybrids
Integrated 2:4 TTL Decoder
• Test Instrumentation
Small Size: 1.92 x 1.60 x 0.10 mm
Functional Diagram
General Description
The HMC641A is a broadband non-reflective GaAs
PHEMT SP4T switch chip. Covering DC to 18 GHz,
this switch offers high isolation and low insertion
loss and extends the frequency coverage of ADI’s
SP4T switch product line. This switch also includes
an on board binary decoder circuit which reduces
the number of required logic control lines to two. The
switch operates using a negative control voltage of
0/-5V, and requires a fixed Vss bias of -5V. All data
is tested with the chip in a 50 Ohm test fixture connected via one 3.0 x 0.5 mil gold ribbon of minimal
length on each RF port.
Electrical Specifications, TA = +25° C, With 0/-5V Control, Vss= -5V, 50 Ohm System
Parameter
Frequency
Min.
Typ.
Max.
Units
2.1
2.3
2.4
3.0
dB
dB
Insertion Loss
DC - 12 GHz
DC - 18 GHz
Isolation (RFC to RF1 - RF4)
DC - 12 GHz
DC - 18 GHz
39
36
42
38
dB
dB
DC - 12 GHz
DC - 18 GHz
14
12
17
15
dB
dB
Return Loss
On State
Return Loss
Off State
DC - 18 GHz
12
15
dB
Input Power for 1 dB Compression
2.05- 18 GHz
22
25
dBm
Input Third Order Intercept
(Two-Tone Input Power= +14 dBm Each Tone)
0.05 - 18 GHz
38
41
dBm
14
95
ns
ns
Switching Characteristics
tRISE, tFALL (10/90% RF)
tON, tOFF (50% CTL to 10/90% RF)
1
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
DC - 18GHz
For price, delivery, and to place orders: Analog Devices, Inc.,
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D