參數(shù)資料
型號: 935056440623
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
文件頁數(shù): 18/21頁
文件大?。?/td> 243K
代理商: 935056440623
Philips Semiconductors
Product specification
SA5219
Wideband variable gain amplifier
1997 Nov 07
6
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
SR00276
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
5219
1 : 2
VAGC
SR00277
Figure 5. Broadband Noise Optimization
This circuit will exhibit about a 7dB
noise
figure
with
approximately
22dB
gain.
Narrowband
circuits
have the advantage of greater stabil-
ity, particularly when multiple de-
vices are cascaded.
50
50
50
+5V
+1V
2:1 TURNS RATIO
LC TUNED
TRANSFORMER
SOURCE
OUTPUT
5219
VAGC
SR00278
Figure 6. Narrowband Noise Optimization
This circuit will exhibit about an 8dB
noise figure with 24dB gain.
50
50
50
+5V
+1V
MINI CIRCUITS
4:1 BALUN OR
EQUIVALENT
SOURCE
OUTPUT
5219
1 : 4
VAGC
SR00279
Figure 7. Broadband Gain Optimization
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