MADR-007098 Datasheet, PDF (2/5 Pages) M/A-COM Technology Solutions, Inc. – Linear Driver for PIN Diode Attenuators

MADR-007098
Linear Driver for
PIN Diode Attenuators
Rev. V2
Figure 1. Linear Attenuator Schematic
+Vcc
RFin
R1
Vcontrol
(0 to 4V)
39K
R2 680
14
4
IN
C1
.01 µF
12
MADR-007098
-000100
1,3,4
2
16,14,13
VOLTAGE
7
VARIABLE
ATTENNUATOR
3
R3
(PTCT)
330 R4
360
REF
5
5,6,8
10
9,11,12
NOTES:
a. Transfer function is 7.5 dB/V
b. Vcontrol is 0V to 4.0V
c. +Vcc is 5.0V ± 5%
d. R3 is a positive temperature coefficient thermistor.
e. Attenuator is MAAV-007089-000100 or MAAV-007090-000100
Figure 2. Typical Attenuation Error
RFoutput
MADR-007098-000100 Driver with MAAV-007090-000100 VVA
2.0
1.5
1.0
0.5
0.0
-0.5
-1.0
-1.5
-2.0
0
3
6
9
12
15
18
21
24
27
30
Frequency: 1960 M Hz
Vco nt: 0 to 4.0V
2
Attenuation (dB)
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