HMC759LP3E_10 Datasheet, PDF (3/8 Pages) Hittite Microwave Corporation – 0.25 dB LSB BiCMOS MMIC 7-BIT DIGITAL ATTENUATOR, 10 - 300 MHz

8
8-3
v00.0909
HMC759LP3E
0.25 dB LSB BiCMOS MMIC 7-BIT
DIGITAL ATTENUATOR, 10 - 300 MHz
Worst Case Step Error
Between Successive Attenuation States ^[1]
0.2
0.15
0.1
0.05
0
-0.05
-0.1
-0.15
-0.2
0
31.75 dB
0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4
FREQUENCY (GHz)
IP3 vs. Attenuation States ^[1]
(Only Major States are Shown)
60
55
16 dB
50
8 dB
31.75 dB
45
40
0 dB
35
30
25
0
0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4
FREQUENCY (GHz)
Input P1dB vs. Attenuation States ^[1][2]
(Only Major States are Shown)
24
8 dB
4 dB
22
20
16 dB
18
16
0
0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4
FREQUENCY (GHz)
Serial Control Interface
The HMC759LP3E contains a 3-wire
SPI compatible digital interface
(SERIN, CLK, LE). The 7-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, 7-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.
[1] C1, C2 = 10nF
[2] Part does not enter 1 dB compression at 31.75 dB max attenuation up to 25 dBm input power.
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Phone: [phone] Fax: [phone] Order On-line at www.hittite.com
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