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| 型號(hào)： | SKY72301-22 |
| 廠商： | Skyworks Solutions Inc |
| 文件頁(yè)數(shù)： | 17/22頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC SYNTHESIZER 1GHZ 28-EPTSSOP |
| 產(chǎn)品目錄繪圖： | 28-TSSOP |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 類(lèi)型： | 分?jǐn)?shù) N 合成器 |
| PLL： | 是 |
| 輸入： | 時(shí)鐘，晶體 |
| 輸出： | 時(shí)鐘，晶體 |
| 電路數(shù)： | 1 |
| 比率 - 輸入:輸出： | 2:2 |
| 差分 - 輸入:輸出： | 是/是 |
| 頻率 - 最大： | 1GHz |
| 除法器/乘法器： | 是/無(wú) |
| 電源電壓： | 2.7 V ~ 3.3 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類(lèi)型： | 表面貼裝 |
| 封裝/外殼： | 28-SOIC（0.173"，4.40mm 寬）裸露焊盤(pán) |
| 供應(yīng)商設(shè)備封裝： | 28-TSSOP 裸露焊盤(pán) |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 產(chǎn)品目錄頁(yè)面： | 587 (CN2011-ZH PDF) |
| 其它名稱(chēng)： | 863-1078-6 |
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DATA SHEET SKY72301-22 FREQUENCY SYNTHESIZER
Skyworks Solutions, Inc. Phone [781] 376-3000 Fax [781] 376-3100 sales@skyworksinc.com www.skyworksinc.com
4
September 11, 2009 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice 200706C
Serial Interface Operation
Register Programming
The serial interface consists of three signals: Clock (pin 1), Data
(pin 27) and CS (pin 28). The Clock signal controls data on the two
serial data lines (Data and CS). The Data pin bits shift into a
temporary register on the rising edge of Clock. The CS line allows
individual selection transfers that synchronize and sample the
information of slave devices on the same bus.
Register programming equations, described in this section, use
the following variables and constants:
Nfractional
Desired VCO division ratio in fractional-N applications.
This is a real number and can be interpreted as the
reference frequency (Fref) multiplying factor such that
the resulting frequency is equal to the desired VCO
frequency.
Figure 3 functionally depicts how a serial transfer takes place.
A serial transfer is initiated when a microcontroller or
microprocessor forces the CS line to a low state. This is followed
immediately by an address/data stream sent to the Data pin that
coincides with the rising edges of the clock presented on the
Clock line.
Ninteger
Desired VCO division ratio in integer-N applications.
This number is an integer and can be interpreted as
the reference frequency (Fref) multiplying factor so that
the resulting frequency is equal to the desired VCO
frequency.
Each rising edge of the Clock signal shifts in one bit of data on the
Data line into a shift register. At the same time, one bit of data is
shifted out of the Mux_out pin (if the serial bit stream is selected)
at each falling edge of Clock. To load any of the registers, 16 bits
of address or data must be presented to the Data line with the
LSB last while the CS signal is low. If the CS signal is low for
more than 16 clock cycles, only the last address or data bits are
used to load the registers.
Nreg
Nine-bit unsigned input value to the divider ranging
from 0 to 511 (integer-N mode) and from 6 to 505
(fractional-N mode).
divider
This constant equals 262144 when the
modulator
is in 18-bit mode, and 1024 when the
modulator is
in 10-bit mode.
dividend
When in 18-bit mode, this is the 18-bit signed input
value to the
modulator, ranging from
–131072 to +131071 and providing 262144 steps,
each step equal to Fdiv_ref/218 Hz.
If the CS signal is brought to a high state before the 13th Clock
edge, the bit stream is assumed to be modulation data samples.
In this case, it is assumed that no address bits are present and
that all the bits in the stream should be loaded into the
Modulation Data Register.
When in 10-bit mode, this is the 10-bit signed input
value to the
modulator, ranging from
–512 to +511 and providing 1024 steps, each step
equal to Fdiv_ref/210 Hz.
FVCO
Desired VCO frequency (either Fvco_main or Fvco_aux).
Fdiv_ref
Divided reference frequency presented to the phase
detector (either Fref_main or Fref_aux).
X
A3
A2
A1
A0
D11 D10 D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
XXX
Clock
Last
Data
CS
C1413
Figure 3. Serial Transfer Timing Diagram
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SKY72302 | 制造商:SKYWORKS 制造商全稱(chēng):SKYWORKS 功能描述:Spur-Free, 6.1 GHz Dual Fractional-N Frequency Synthesizer |
| SKY72302-21 | 功能描述:時(shí)鐘合成器/抖動(dòng)清除器 6.1GHz 400Hz step Freq. Synthesizer RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel |
| SKY72310-362 | 功能描述:IC SYNTHESIZER 2.1GHZ 24QFN RoHS:是 類(lèi)別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 時(shí)鐘發(fā)生器，PLL，頻率合成器 系列:- 產(chǎn)品變化通告:Product Discontinuation 04/May/2011 標(biāo)準(zhǔn)包裝:96 系列:- 類(lèi)型:時(shí)鐘倍頻器，零延遲緩沖器 PLL:帶旁路 輸入:LVTTL 輸出:LVTTL 電路數(shù):1 比率 - 輸入:輸出:1:8 差分 - 輸入:輸出:無(wú)/無(wú) 頻率 - 最大:133.3MHz 除法器/乘法器:是/無(wú) 電源電壓:3 V ~ 3.6 V 工作溫度:0°C ~ 70°C 安裝類(lèi)型:表面貼裝 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:16-TSSOP 包裝:管件 其它名稱(chēng):23S08-5HPGG |
| SKY72310-362LF | 功能描述:IC SYNTHESIZER 2.1GHZ 24-QFN RoHS:是 類(lèi)別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 時(shí)鐘發(fā)生器，PLL，頻率合成器 系列:- 標(biāo)準(zhǔn)包裝:2,000 系列:- 類(lèi)型:PLL 頻率合成器 PLL:是 輸入:晶體 輸出:時(shí)鐘 電路數(shù):1 比率 - 輸入:輸出:1:1 差分 - 輸入:輸出:無(wú)/無(wú) 頻率 - 最大:1GHz 除法器/乘法器:是/無(wú) 電源電壓:4.5 V ~ 5.5 V 工作溫度:-20°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:16-LSSOP（0.175"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:16-SSOP 包裝:帶卷 (TR) 其它名稱(chēng):NJW1504V-TE1-NDNJW1504V-TE1TR |
| SKY72310-362LF_EVB_NON SKYWORKS VCO | 制造商:Skyworks Solutions Inc 功能描述:Eval Kit for SKY72310-362LF TW14-D880, Bulk |
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