HMC629LP4 Datasheet, PDF (6/8 Pages) Hittite Microwave Corporation – 3 dB LSB GaAs MMIC 4-BIT DIGITAL ATTENUATOR, DC - 6 GHz

v07.0410
Pin Descriptions
Pin Number
Function
24
P/S
HMC629LP4 / 629LP4E
3 dB LSB GaAs MMIC 4-BIT
DIGITAL ATTENUATOR, DC - 6 GHz
8
Description
Interface Schematic
1
CLK
2
SERIN
See truth table, control voltage
table and timing diagram.
3
LE
4, 15
5, 14
6 - 13
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 are required. Select value for
lowest frequency of operation. Place capacitor as close to
pins as possible. See Application Circuit.
16
SEROUT
Serial input data delayed by 6 clock cycles.
17, 18
PUP2, PUP1
20 - 23
D3, D2, D1, D0
19
Vdd
See truth table, control voltage
table and timing diagram.
Supply voltage
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
Phone: [phone] Fax: [phone] Order On-line at www.hittite.com
Application Support: Phone: [phone] or [e-mail]
8-6