參數(shù)資料
型號(hào): 935030700623
廠商: NXP SEMICONDUCTORS
元件分類: 放大器
英文描述: RF/MICROWAVE WIDE BAND LOW POWER AMPLIFIER
封裝: SOT109-1, MS-012AC, SO-16
文件頁(yè)數(shù): 17/20頁(yè)
文件大小: 272K
代理商: 935030700623
Philips Semiconductors
Product specification
SA5209
Wideband variable gain amplifier
1997 Nov 07
6
RF/IF
INPUT
AGC
OUTPUT
BAT 17
5209
R4
C4
D1
D2
D3
R6
R1
R2
L1
L2
R3
C3
R5
5230
+
VCC
R1 =R2 = 3.9k
R3 = 360
R4 = 62k
R5 = 100
R6 = 1k pot
2
πfL1 = 10k
L1
=L2
SR00239
Figure 3. AGC Configuration Using Cascaded SA5209s
1
2
3
4
5
6
7
8
9
10
11
12
13
14
16
15
OUTA
VCC1
INA
GND2
VCC2
GND1
GND2
INB
GND1
VBG
VAGC
GND2
OUTB
GND2
V
OUTA
OUTB
VCC
5VDC
+
VIN
10
F
0.1
F
0.1
F
0.1
F
0.1
F
0.1
F
0.1
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
2:1 BALUN
OR SIMILAR
SOURCE
OUTPUT
5209
1 : 2
VAGC
SR00241
Figure 5. Broadband Noise Optimization
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