HMC542BLP4E
v00.1212
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
SERIAL CONTROL ATTENUATOR, DC - 4 GHz
Pin Descriptions
Pin Number
Function
N/C
Description
Interface Schematic
These pins are not connected internally. However, all data
shown herein was measured with these pins connected
to RF/DC Ground.
1, 3, 5, 14,
16-18, 23
2
Vcc
Supply Voltage.
This pin is DC coupled and matched to 50 Ohms
Blocking capacitors are required. Select value based on
lowest frequency of operation.
4, 15
RF1, RF2
External capacitor to ground is required. Select value for
lowest frequency of operation. Place capacitor as close to
pins as possible.
6 - 11, 13
ACG1 - ACG7
N/C
This pin is not connected internally and any connection made
to it externally will have no effect on product performance.
12
Serial data output. Serial input data
delayed by 8 clock cycles
19
Serial Output
20
Reset
See truth table, control voltage table and timing diagram.
21
22
Shift Clock
Latch Enable
24
Serial Input
Package bottom has an exposed metal paddle
that must be connected to RF/DC Ground.
gnD
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
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resFpoonrsibpilirtyicisea,ssdumeeldivbey ArynalaognDdevticoespfolar itcseuseo, rndoreforrsa:nyHinifrtitnigteemeMntsicofrpoawtenatsvoer oCtheorrporation, 2 Elizabeth Drive, Chelmsford, MA 01824
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
rights of third parties that may result from its use. Specifications subject to change without notice. No
Phone: 978-250-3343
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6
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