參數(shù)資料
型號(hào)： TRF2050PW
廠商： TEXAS INSTRUMENTS INC
元件分類： PLL合成/DDS/VCOs
英文描述： PLL FREQUENCY SYNTHESIZER, 1200 MHz, PDSO20
封裝： PLASTIC, SO-20
文件頁(yè)數(shù)： 9/34頁(yè)
文件大?。?/td> 543K
代理商： TRF2050PW
TRF2050
LOW-VOLTAGE 1.2-GHz FRACTIONAL-N/INTEGER-N SYNTHESIZER
SLWS030E– JUNE 1996 – REVISED OCTOBER 2000
17
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PRINCIPLES OF OPERATION
serial programming input
The TRF2050 internal registers are programmed using a three-wire (CLOCK, DATA, STROBE) serial interface.
The serial data is structured into 24-bit standard-length or 32-bit long-length words of which one or four bits are
dedicated address bits. The flag LONG in the D-Word determines whether the A0 (LONG = 0) or A1
(LONG = 1) format is applicable. Figures 18 and 19 show the format of the serial data for two modes of TRF2050
operation: SA7025 and EPM, respectively. The least significant bit (LSB) of the C-Word determines the
operational mode of the TRF2050: 0 = SA7025, 1 = EPM.
In SA7025 mode, the TRF2050 emulates the Philips SA7025 with respect to serial programming.
Microcontroller software written for the SA7025 works transparently when the TRF2050 is operated in SA7025
emulation mode.
Figure 2 shows the timing diagram of the serial input. When the STROBE signal is low, the signal on the DATA
input is clocked into a shift register on the positive edges of the CLOCK. When the STROBE signal is high,
depending on the 1 or 4 address bit(s), the data is latched into different working registers or temporary registers.
In order to fully program the synthesizer, four words must be sent: D, C, B, and A. The E-Word is for testing
purposes only.
The A-Word contains new data for the main divider. The A-Word is loaded only when a main divider
synchronization signal is also active. This is done to avoid phase jumps during reprogramming the main divider.
The synchronization signal is generated by the main divider.
When the TRF2050 is operated in SA7025 emulation mode, programming the A-Word sets the main charge
pumps, which are located on outputs PHP and PHI, into speed-up mode, as long as the STROBE is high. When
the TRF2050 is operated in EPM mode, speed-up mode duration is determined by field G in the B-Word.
NOTE:
The C-Word must be sent during the first programming cycle after power-up
in order to set the mode of operation (7025 or EPM).
相關(guān)PDF資料
PDF描述
TRF2056PWR PLL FREQUENCY SYNTHESIZER, 1200 MHz, PDSO20
TRF4000 Pcs RX-mixer
TRF4002PWP 1850 MHz - 1910 MHz RF/MICROWAVE NARROW BAND MEDIUM POWER AMPLIFIER
TRS-1300-1305-8310 TRIPLE COLOR LED ARRAY
TRS-1300-1311-8310 DUAL COLOR LED ARRAY
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TRF2052 制造商:TI 制造商全稱:Texas Instruments 功能描述:LOW-VOLTAGE 2-GHz SYNTHESIZER
TRF2052PW 功能描述:IC LV 2-GHZ SYNTH 20-TSSOP RoHS:否 類別: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:NJW1504V-TE1-NDNJW1504V-TE1TR
TRF2056 制造商:TI 制造商全稱:Texas Instruments 功能描述:LOW-VOLTAGE 1,2-GHz FRACTIONAL-N/INTEGER-N SYNTHESIZER
TRF2056PW 制造商:Rochester Electronics LLC 功能描述:- Bulk
TRF2253PWR 制造商:Texas Instruments 功能描述:
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*