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參數(shù)資料
| 型號： | SA5522 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | 1.4 GHz I2C-bus controlled synthesizer |
| 中文描述： | 1.4千兆赫的I2C總線控制合成器 |
| 文件頁數(shù)： | 13/20頁 |
| 文件大?。?/td> | 172K |
| 代理商： | SA5522 |
1996 Jan 23
13
Philips Semiconductors
Product specification
1.4 GHz I
2
C-bus controlled synthesizer
TSA5522
APPLICATION INFORMATION
Tuning amplifier
The tuning amplifier is capable of driving the varicap
voltage without an external transistor. The tuning voltage
output must be connected to an external load of 27 k
which is connected to the tuning voltage supply rail.
Figure 6 shows a possible loop filter. The component
values depend on the oscillator characteristics and the
selected reference frequency.
Crystal oscillator
The crystal oscillator uses a 4 MHz crystal connected in
series with an 18 pF capacitor thereby operating in the
series resonance mode. Connecting the oscillator to the
supply voltage is preferred, but it can, however, also be
connected to ground.
Fig.6 Typical application (SO16).
handbook, full pagewidth
P0
CP
P6
SCL
SDA
AS
XTAL
V
33 V
UHF
VHF1
VHF3
12 V
BS
RF
RF
5 V
10 nF
1 nF
1 nF
P1
P2
V
V
BS
RF2
RF1
V
CC2
CC1
EE
P6
SCL
39 nF
180 nF
SDA
AS
TSA5522T
tune
22 k
27 k
4 MHz
18 pF
MLD229
Vtune
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相關代理商/技術參數(shù) |
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