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NE5209D Datasheet(PDF) 6 Page - NXP Semiconductors

Part # NE5209D
Description  Wideband variable gain amplifier
PDF  15 Pages
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Manufacturer  PHILIPS [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

NE5209D Datasheet(HTML) 6 Page - NXP Semiconductors

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Philips Semiconductors
Product specification
NE/SA5209
Wideband variable gain amplifier
1990 Aug 20
6
RF/IF
INPUT
AGC
OUTPUT
BAT 17
BAT 17
5209
5209
5209
R4
C4
D1
D2
D3
R6
R1
R2
L1
L2
R3
C3
R5
5230
+
–
VCC
VCC
R1 =R2 = 3.9k
R3 = 360Ω
R4 = 62k
R5 = 100Ω
R6 = 1k pot
2
πfL1 = 10k
L1
=L2
SR00239
Figure 3. AGC Configuration Using Cascaded NE5209s
1
2
3
4
5
6
7
8
9
10
11
12
13
14
16
15
OUTA
VCC1
INA
GND2
VCC2
GND1
GND1
GND2
INB
GND1
VBG
VAGC
GND2
OUTB
GND2
GND2
V
OUTA
OUTB
VCC
5VDC
+
VIN
10
µF
0.1
µF
0.1
µF
0.1
µF
0.1
µF
0.1
µF
0.1
µF
50
Ω
(16-Pin SO, 150-mil wide)
SR00240
Figure 4. VGA AC Evaluation Board
This circuit will exhibit about a 7dB
noise
figure
with
approximately
22dB gain.
50
Ω
50
Ω
50
Ω
+5V
+1V
MINI CIRCUITS
2:1 BALUN
OR SIMILAR
SOURCE
OUTPUT
5209
1 : 2
VAGC
SR00241
Figure 5. Broadband Noise Optimization



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