參數(shù)資料
型號(hào)： TSA5059A
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(yè)數(shù)： 15/24頁(yè)
文件大?。?/td> 118K
代理商： TSA5059A
2000 Oct 24
15
Philips Semiconductors
Product specification
2.7 GHz I
2
C-bus controlled low phase
noise frequency synthesizer
TSA5059A
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.
handbook, full pagewidth
TSA5059A
FCE714
1
DRIVE
BC847
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
Fig.4 Typical application.
Loop bandwidth
Most of the applications the TSA5059A 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
depends on the VCO slope and phase noise as well as the
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 TSA5059A 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 TSA5059A without suffering from accelerated ageing.
It is also possible to feed pin XTAL with an external signal
between2 and 20 MHz,comingfromanexternaloscillator
or from the pin XT/COMP of another TSA5059A, when
more 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 and XCS = 0).
This pin should then be left open.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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(lèi)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
TSA5059ATS/C2,118 制造商:NXP Semiconductors 功能描述:
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