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參數(shù)資料
| 型號： | TSA5059 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | 2.7 GHz I2C-bus controlled low phase noise frequency synthesizer |
| 中文描述： | 2.7千兆赫的I2C控制的低相位噪聲頻率合成器總線 |
| 文件頁數(shù)： | 15/24頁 |
| 文件大?。?/td> | 151K |
| 代理商： | TSA5059 |
1999 Oct 05
15
Philips Semiconductors
Preliminary specification
2.7 GHz I
2
C-bus controlled low phase
noise frequency synthesizer
TSA5059
APPLICATION INFORMATION
An example of a typical application is given in Fig.4. In this application the VCO centre frequency is 1.5 GHz, with a slope
of 100 MHz/V; the expected loop bandwidth is 10 kHz with a charge pump current of 555
μ
A and f
comp
of 250 kHz. Filter
components need to be adapted to each application depending on the VCO characteristics and the required performance
of the loop.
Fig.4 Typical application.
handbook, full pagewidth
TSA5059
FCE123
1
VT
GND
RFB
RFA
VCC
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
AS
XT/COMP
XTAL
CP
SDA
SCL
P3
P2
P1 P0 ADC
2.2 nF
10 nF
1 nF
1 nF
3.9 k
2.7 k
5 V
33 V
27 k
18 pF
1 nF
tuning
voltage
VCO
output
VCO
MICRO-
CONTROLLER
47 nF
4 MHz
Loop bandwidth
Most of the applications the TSA5059 are dedicated for
require a large loop bandwidth, in the order of a few kHz to
a few tens of kHz. The calculation of the loop filter
elements has to be done for each application, while it
dependsontheVCOslopeandphasenoise,aswellasthe
reference frequency and charge pump current.
A simulation of the loop can easily be done by using the
SIMPATA software from Philips.
Reference source
The TSA5059 is well suited to be used with a 4 MHz
crystal connected to pin XTAL. Philips crystal ordering
code 4322 143 04093 is recommended in this case.
It is however possible to use a crystal with an higher
frequency (up to 16 MHz) to improve the noise
performance. When choosing a crystal, one should take
notice to select a crystal able to withstand the drive level of
the TSA5059 without suffering from accelerated ageing.
It is also possible to feed pin XTAL with an external signal
between2 and 20 MHz,comingfromanexternaloscillator
orfromthepin XT/COMPofanotherTSA5059,whenmore
than one synthesizer is present in the same application.
Then the application given in Fig.5 should be used.
If the signal at pin XT/COMP is not used in an application,
the output should be switched off (XCE = 0, XCS = 0).
This pin should then be open.
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| TSA5059T | 2.7 GHz I2C-bus controlled low phase noise frequency synthesizer |
| TSC2200 | PDA ANALOG INTERFACE CIRCUIT |
| TSC2200IPW | PDA ANALOG INTERFACE CIRCUIT |
| TSC2200IPWR | PDA ANALOG INTERFACE CIRCUIT |
| TSC2200IRHB | PDA ANALOG INTERFACE CIRCUIT |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TSA5059A | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:2.7 GHz I2C-bus controlled low phase noise frequency synthesizer |
| TSA5059AT | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:2.7 GHz I2C-bus controlled low phase noise frequency synthesizer |
| TSA5059AT/C2,518 | 制造商:NXP Semiconductors 功能描述: |
| TSA5059ATS | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:2.7 GHz I2C-bus controlled low phase noise frequency synthesizer |
| TSA5059ATS/C1,118 | 功能描述:鎖相環(huán) - PLL 2,7GHZI2C BUS RoHS:否 制造商:Silicon Labs 類型:PLL Clock Multiplier 電路數(shù)量:1 最大輸入頻率:710 MHz 最小輸入頻率:0.002 MHz 輸出頻率范圍:0.002 MHz to 808 MHz 電源電壓-最大:3.63 V 電源電壓-最小:1.71 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:QFN-36 封裝:Tray |
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