HMC271LP4 Datasheet, PDF (5/8 Pages) List of Unclassifed Manufacturers – 1 dB LSB GaAs MMIC 5-BIT SERIAL CONTROL DIGITAL ATTENUATOR, 0.7 - 3.7 GHz

HMC271LP4 / 271LP4E
v02.0705
1 dB LSB GaAs MMIC 5-BIT SERIAL
CONTROL DIGITAL ATTENUATOR, 0.7 - 3.7 GHz
6
Pin Descriptions
Pin Number
1, 3, 4, 6, 10, 12, 13,
15, 16, 18
Function
N/C
2, 17
RF1, RF2
Description
These pins should be connected to PCB RF ground to
maximize performance.
This pin is DC coupled and matched to 50 Ohms
Blocking capacitors are required. Select value based on
lowest frequency of operation.
Interface Schematic
5
Serial Output
Serial data output. Serial input data
delayed by 8 clock cycles.
7
8
9
11
14
19 - 24
Reset
Shift Clock
Latch Enable
Serial Input
See truth table, control voltage table and timing diagram.
Vcc
GND
Supply Voltage.
Package bottom has an exposed metal paddle that must also
be connected to RF/DC Ground.
6 - 18
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