參數(shù)資料
型號(hào): SA5209N
廠商: NXP SEMICONDUCTORS
元件分類: 衰減器
英文描述: Wideband variable gain amplifier
中文描述: 0 MHz - 850 MHz RF/MICROWAVE WIDE BAND LOW POWER AMPLIFIER
文件頁數(shù): 6/17頁
文件大小: 202K
代理商: SA5209N
Philips Semiconductors
Product specification
SA5209
Wideband variable gain amplifier
1997 Nov 07
6
RF/IF
AGC
BAT 17
BAT 17
5209
5209
5209
R4
C4
D1
D2
D3
R6
R1
R2
L1
L2
R3
C3
R5
5230
+
V
CC
V
CC
R
1
=
R
2
=
R
3
=
R
4
=
R
5
=
R
6
=
3.9k
360
62k
100
1k pot
2
π
fL
1
L
1
=
=
10k
L
2
SR00239
Figure 3. AGC Configuration Using Cascaded SA5209s
1
2
3
4
5
6
7
8
9
10
11
12
13
14
16
15
OUT
A
V
CC1
IN
A
GND2
V
CC2
GND1
GND1
GND2
IN
B
GND1
V
BG
V
AGC
GND
2
OUT
B
GND2
GND2
V
OUT
A
OUT
B
V
CC
5VDC
+
V
IN
10
μ
F
0.1
μ
F
0.1
μ
F
0.1
μ
F
0.1
μ
F
0.1
μ
F
0.1
μ
F
50
(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
50
50
+5V
+1V
MINI CIRCUITS
OR SIMILAR
SOURCE
OUTPUT
5209
1 : 2
V
AGC
SR00241
Figure 5. Broadband Noise Optimization
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