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ML1490 View Datasheet(PDF) - LANSDALE Semiconductor Inc.

Part Name
Description
Manufacturer
ML1490
LANSDALE
LANSDALE Semiconductor Inc. LANSDALE
ML1490 Datasheet PDF : 8 Pages
1 2 3 4 5 6 7 8
ML1490
LANSDALE Semiconductor, Inc.
Legacy Applications Information
Figure 19. 60 MHz Power Gain Test Circuit
0.0001
C3
µF
Shield
7
C4
C2
6
VAGC
8
L1
ML1490
L2
5
Input
1
(50 ) C1
4
RAGC
32
VR(AGC)
0.001 µF
L1 = 7 turns, #20 AWG wire, 5/16" Dia.,5/8" long
L2 = 6 turns, #14 AWG wire, 9/16" Dia.,3/4" long
C1,C2,C3 = (1–30) pF
C4 = (1–10) pF
Output
(50 )
+12 Vdc
Figure 20. Video Amplifier
0.001
1.0 µF
µF
7
VR(AGC)
VR(AGC)
ei
10 k
5.6 k
1.0 µF
6
8
ML1490
5
1
2
4
3
1.0 µF
0.001 µF
0.001 µF
eo
RL
+12 Vdc
Figure 21. 30 MHz Amplifier
(Power Gain = 50 dB, BW 1.0 MHz)
Figure 22. 100 MHz Mixer
(1 – 30) pF
Input
(50 ) 38 pF
0.002 µF 7
6
T1
8
5
L1
ML1490
C2
VAGC
1
43
5.6 k 0.002 µF
2 1 – 10 pF
10 µH
VR(AGC)
+12 Vdc
RL = 50
L1 = 12 turns, #22 AWG wire on a Toroid core,
(T37–6 micro metal or equiv).
T1: Primary = 17 turns, #20 AWG wire on a Toroid core, (T44–6).
Secondary = 2 turns, #20 AWG wire.
VAGC 6.0 V
Input from
local oscillator
(70 MHz)
Signal Input
100
(1 – 10) pF
7
5
8
6
ML1490 L2
(100 MHz)
L1 4
(1 – 30) pF
3
21
0.002 µF
0.002 µF
(1 – 10) pF
(1 – 30) pF
IF Output
(30 MHz)
+12 Vdc
10 µH
L1 = 5 turns, #16 AWG wire, 1/4", ID Dia., 5/8" long
L2 = 16 turns, #20 AWG wire on a Toroid core, (T44–6).
Figure 23. Two–Stage 60 MHz IF Amplifier (Power Gain 80 dB, BW 1.5 MHz)
10 k
VR(AGC)
Input
(50 )
24 pF
5.1 k
200 µH
(1–10) pF
0.002 µF
7
Shield
4
8
5 ML1490
6
1 (1–10) pF
2
3
RFC
10 µH
+12 Vdc
(1–10) pF
T1 0.002 µF
1.0 k
39 pF
7
Shield
4
T2
8
5
6
0.002 µF
ML1490
1 (1–10) pF
2
3
RFC
0.001 µF
Output
(50 )
T1: Primary Winding = 15 turns, #22 AWG wire, 1/4" ID Air Core
Secondary Winding = 4 turns, #22 AWG wire,
Coefficient of Coupling 1.0
T2: Primary Winding = 10 turns, #22 AWG wire, 1/4" ID Air Core
Secondary Winding = 2 turns, #22 AWG wire,
Coefficient of Coupling 1.0
Page 6 of 8
www.lansdale.com
Issue A
 

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