SMP1307-011 Alpha Industries, SMP1307-011 Datasheet - Page 3

• Manufacturer Part Number: SMP1307-011
• Description: Very Low Distortion Attenuator Plastic Packaged PIN Diodes
• Manufacturer: Alpha Industries

Very Low Distortion Attenuator Plastic Packaged PIN Diodes
SMP1307-027 4 Diode PI Attenuator
The SMP1307-027 employs 4 PIN diode junctions in a
5-lead SOT package. It is configured for ease of
insertion in the PI attenuator circuit commonly used for
broadband TV distribution systems, covering a frequency
range from 5 MHz to beyond 1 GHz.
A broadband attenuator was designed using the
SMP1307-027 showing good performance to 2 GHz. The
attenuator was evaluated with a 50
impedance. The following figure shows the circuit
diagram and measured performance.
A 4 diode PI attenuator utilizing individual SMP1307-011 PIN diodes is described in the “A Wideband General Purpose PIN Diode Attenuator” Application Note.
SMP1307-027 Attenuation vs. Frequency
-10
-20
-30
-40
-50
0
0
Alpha Industries, Inc. [781] 935-5150
Input
RF
0.5
Frequency (GHz)
10,000 pF
C
1
1.0
10,000 pF
V
V
V
V
V
CTL
CTL
CTL
CTL
CTL
1.5
1 k
R
C
source and load
1
2
= 20 V
= 15 V
= 10 V
= 5 V
= 0 V
D
Specifications subject to change without notice. 1/01A
2
Fax [617] 824-4579
2.0
D
1
–D
D
R
1 k
1
3
560
4
R
5
SMP1307-027
1 k
R
2
10,000 pF
1 k
Email [e-mail]
R
C
4
D
3
3
D
4
10,000 pF
C
4
560
R
10,000 pF
6
C
6
V
4
5 V
3
REF
10,000 pF
0–20 V
V
www.alphaind.com
TUNE
C
2
5
Output
1
5
RF
SMP1307 Series
3