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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)： | 16/24頁 |
| 文件大小： | 151K |
| 代理商： | TSA5059 |
1999 Oct 05
16
Philips Semiconductors
Preliminary specification
2.7 GHz I
2
C-bus controlled low phase
noise frequency synthesizer
TSA5059
handbook, full pagewidth
TSA5059
FCE124
1
2
3
4
5
6
7
8
16
15
14
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12
11
10
9
1.2 k
18 pF
4 MHz
TSA5059
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
1.0 nF
Fig.5 Application for using one crystal with two TSA5059s.
I
2
C-bus crosstalk and loop amplifier
The TSA5059 includes a loop amplifier between pin CP
and pin VT. While this amplifier shares the same ground
pin as the I
2
C-bus, there may be some I
2
C-bus crosstalk.
The best way to avoid any I
2
C-bus crosstalk, both in the
PLL IC and in the application (i.e. parasitic coupling
between the I
2
C-bus lines and the VCO coil), is to avoid
the I
2
C-bus signal to come in the RF part by using an
I
2
C-bus gate that allows only the messages for the PLL to
go to the PLL, and to avoid unnecessary repeated
sending. Such a gate is integrated in most of the Philips
digital demodulators.
If I
2
C-bus crosstalk is still a problem, it is possible not to
use the internal amplifier, and to replace it with a NMOS
transistor in the application as given in Fig.6. In this case
the pin VT is left open, and it is possible to implement on
the PCB the foot print for a jumper between the tuning
voltage line and pin VT to be able to choose either the
internal amplifier (mounting the jumper and not the NMOS
transistor) or the external amplifier (mounting the NMOS
transistor and not the jumper). It is recommended to use a
BSH111 or BSH121 N-channel MOS transistor. The
threshold voltage of the transistor has to be lower than
2.0 V.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 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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