HMC624LP4 Datasheet, PDF (7/10 Pages) Hittite Microwave Corporation – 0.5 dB LSB GaAs MMIC 6-BIT DIGITAL ATTENUATOR, DC - 6 GHz

v02.0807
HMC624LP4 / 624LP4E
0.5 dB LSB GaAs MMIC 6-BIT
DIGITAL ATTENUATOR, DC - 6 GHz
10
Pin Descriptions
Pin Number
Function
1
P/S
2
CLK
3
SERIN
4
LE
Description
See truth table, control voltage
table and timing diagram.
Interface Schematic
5, 14
6, 13
7 - 12
GND
These pins and package bottom
must be connected to RF/DC ground.
ATTIN,
ATTOUT
ACG1 - ACG6
These pins are DC coupled and matched to 50 Ohms.
Blocking capacitors are required. Select value based
on lowest frequency of operation.
External capacitors to ground is required. Select value for
lowest frequency of operation. Place capacitor as close to
pins as possible.
15
SEROUT
Serial input data delayed by 6 clock cycles.
16, 17
19 - 24
PUP2, PUP1
D5, D4, D3,
D2, D1, D0
See truth table, control voltage
table and timing diagram.
10 - 208
18
Vdd
Supply voltage
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20 Alpha Road, Chelmsford, MA 01824 Phone: [phone] Fax: [phone]
Order On-line at www.hittite.com