hmc624lflp4e Hittite Microwave Corporation, hmc624lflp4e Datasheet - Page 3

• Manufacturer Part Number: hmc624lflp4e
• Description: 0.5 Db Lsb Gaas Mmic 6-bit Digital Attenuator, 60 - 500 Mhz
• Manufacturer: Hittite Microwave Corporation

8 - 3
8
Step Attn vs. Attn State, 60 - 300 MHz
IP3 @ Major Attenuation States
Serial Control Interface
the HMC624LFLP4e contains a 3-wire sPI compatible digital interface (serIn, CLK, Le). the serial control interface
is activated when P/s is kept high. the 6-bit serial word must be loaded MsB first. the positive-edge sensitive CLK
and LE requires clean transitions. If mechanical switches are used, sufficient debouncing should be provided. When
LE is high, 6-bit data in the serial input register is transferred to the attenuator. When LE is high CLK is masked to
prevent data transition during output loading.
When P/S is low, 3-wire SPI interface inputs (SERIN, CLK, LE) are disabled and the input register is loaded with
parallel digital inputs (D0-D5). When LE is high, 6-bit parallel data changes the state of the part per truth table.
For all modes of operations, the state will stay constant while Le is kept low.
0.8
0.7
0.6
0.5
0.4
0.3
0.2
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
70
60
50
40
30
50
0
4
150
8
ATTENUATION STATE (dB)
Phone: [phone]
FREQUENCY (MHz)
12
250
100 MHz
200 MHz
300 MHz
60 MHz
Application Support: Phone: [phone] or [e-mail]
16
350
20
24
450
v00.0511
28
Fax: [phone]
550
32
DIGITAL ATTENUATOR, 60 - 500 MHz
Step Attn vs. Attn State, 400-500 MHz
P0.1dB vs. Temperature
Order On-line at www.hittite.com
0.8
0.7
0.6
0.5
0.4
0.3
0.2
40
35
30
25
20
50
0
0.5 dB LSB GaAs MMIC 6-BIT
4
150
8
ATTENUATION STATE (dB)
HMC624LFLP4E
FREQUENCY (MHz)
12
250
400 MHz
500 MHz
16
+25 C
+85 C
350
-40 C
20
24
450
28
550
32