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9 - 364

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 HMC596LP4(E) 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 first switch should be

connected to the second switch, as illustrated.

Mirror image switch performance can be realized by invert-

ing the HV1 & HV2 logic control signals of one of the

HMC596LP4(E) 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 HMC596LP4(E) does not provide output to output (OP1

to OP2) isolation. For this reason, it is recommended that

external amplifiers should be used at each output. The

amplifier’s reverse isolation will provide output to output isolation, if this is necessary.

Each HMC596LP4(E) requires DC blocking capacitors on ALL RF input and output ports.

Switch Application Circuit for 4x4 Switch Matrix

SMT CMOS 4x2 SWITCH

MATRIX, 0.2 - 3.0 GHz

v00.0107

Pin Descriptions

Pin Number

Function

Description

Interface Schematic

1, 2, 4 - 6, 13 - 15,

17, 18

GND

Package bottom has exposed metal paddle

that must be connected to PCB RF ground.

3, 16, 19, 24

HL, VL, VH, HH

Switch RF Input. This pin is DC coupled and should be DC

blocked externally using a series capacitor. Select value

based on lowest frequency of operation.

7, 12

OP1, OP2

Switch RF Input. This pin is DC coupled and should be DC

blocked externally using a series capacitor. Select value

based on lowest frequency of operation.

8HV2

Control Inputs. See truth and control voltage table.

9TONE2

10

TONE1

11

HV1

20, 22, 23

N/C

Not connected.

21

Vdd

Supply Voltage