HMC542LP4 Datasheet, PDF (5/8 Pages) Hittite Microwave Corporation – 0.5 dB LSB GaAs MMIC 6-BIT DIGITAL SERIAL CONTROL ATTENUATOR, DC - 3.0 GHz

HMC542LP4 / 542LP4E
v00.0306
0.5 dB LSB GaAs MMIC 6-BIT DIGITAL
SERIAL CONTROL ATTENUATOR, DC - 3.0 GHz
6
Pin Descriptions
Pin Number
Function
1, 3, 5, 12, 14,
16-18, 23
N/C
2
Vcc
Description
These pins should be connected to PCB RF ground to
maximize performance.
Supply Voltage.
4, 15
6 - 11, 13
RF1, RF2
ACG1 - ACG7
This pin is DC coupled and matched to 50 Ohms
Blocking capacitors are required. Select value based on
lowest frequency of operation.
External capacitor to ground is required. Select value for
lowest frequency of operation. Place capacitor as close to
pins as possible.
Interface Schematic
19
Serial Output
Serial data output. Serial input data
delayed by 8 clock cycles
20
Reset
21
Shift Clock
22
Latch Enable
See truth table, control voltage table and timing diagram.
24
Serial Input
GND
Package bottom has an exposed metal paddle
that must be connected to RF/DC Ground.
6 - 186
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: [phone] Fax: [phone]
Order On-line at www.hittite.com