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參數(shù)資料
| 型號： | ADF4153 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Fractional-N Frequency Synthesizer |
| 中文描述： | 分?jǐn)?shù)N頻率合成器 |
| 文件頁數(shù)： | 21/24頁 |
| 文件大?。?/td> | 354K |
| 代理商： | ADF4153 |
ADF4153
ADSP-2181 Interface
Figure 22 shows the interface between the ADF4153 and the
ADSP-21xx digital signal processor. As discussed previously, the
ADF4153 needs a 24-bit serial word for each latch write. The
easiest way to accomplish this using the ADSP-21xx family is to
use the autobuffered transmit mode of operation with alternate
framing. This provides a means for transmitting an entire block
of serial data before an interrupt is generated. Set up the word
length for eight bits and use three memory locations for each
24-bit word. To program each 24-bit latch, store the three 8-bit
bytes, enable the autobuffered mode, and write to the transmit
register of the DSP. This last operation initiates the autobuffer
transfer.
Rev. A | Page 21 of 24
ADSP-21xx
ADF4153
SCLOCK
SCLK
SDATA
LE
MUXOUT
(LOCK DETECT)
DT
TFS
I/O FLAGS
0
Figure 22. ADSP-21xx to ADF4153 Interface
PCB DESIGN GUIDELINES FOR CHIP SCALE
PACKAGE
The lands on the chip scale package (CP-20) are rectangular.
The printed circuit board pad for these should be 0.1 mm
longer than the package land length and 0.05 mm wider than
the package land width. The land should be centered on the pad.
This ensures that the solder joint size is maximized.
The bottom of the chip scale package has a central thermal pad.
The thermal pad on the printed circuit board should be at least
as large as this exposed pad. On the printed circuit board, there
should be a clearance of at least 0.25 mm between the thermal
pad and the inner edges of the pad pattern. This ensures that
shorting is avoided.
Thermal vias may be used on the printed circuit board thermal
pad to improve thermal performance of the package. If vias are
used, they should be incorporated in the thermal pad at 1.2 mm
pitch grid. The via diameter should be between 0.3 mm and
0.33 mm, and the via barrel should be plated with 1 oz. copper
to plug the via.
The user should connect the printed circuit board thermal pad
to AGND.
相關(guān)PDF資料 |
PDF描述 |
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| ADF4153BCP | Fractional-N Frequency Synthesizer |
| ADF4153BCP-REEL | Fractional-N Frequency Synthesizer |
| ADF4153BCP-REEL7 | Fractional-N Frequency Synthesizer |
| ADF4153BRU | Fractional-N Frequency Synthesizer |
| ADF4153BRU-REEL | Fractional-N Frequency Synthesizer |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADF4153ABCPZ | 制造商:Analog Devices 功能描述:SINGLE RF F-N PLL 制造商:Analog Devices 功能描述:SINGLE RF F-N PLL - Trays 制造商:Analog Devices 功能描述:IC PLL FREQ SYNTHESIZER 20-LFCSP 制造商:Analog Devices 功能描述:IC FREQ SYNTHESIZER 4GHZ 20 制造商:Analog Devices 功能描述:IC, FREQ SYNTHESIZER, 4GHZ, 20LFCSP 制造商:Analog Devices Inc. 功能描述:Phase Locked Loops - PLL Single RF F-N PLL 制造商:Analog Devices 功能描述:PLL SYNTHESIZER, FREQUENCY, 4GHZ, LFCSP-20; PLL Type:Frequency Synthesis; Frequency:4GHz; Supply Current:20mA; Supply Voltage Min:2.7V; Supply Voltage Max:3.3V; Digital IC Case Style:LFCSP; No. of Pins:20; Package / Case:20-LFCSP 制造商:Analog Devices 功能描述:IC, FREQ SYNTHESIZER, 4GHZ, 20LFCSP; Synthesizer Type:Frequency; Frequency:4GHz; Supply Voltage Min:2.7V; Supply Voltage Max:3.3V; Supply Current:20mA; Digital IC Case Style:LFCSP; No. of Pins:20; Operating Temperature Min:-40C; ;RoHS Compliant: Yes 制造商:Analog Devices 功能描述:PLL SYNTHESIZER, FREQUENCY, 4GHZ, LFCSP-20; PLL Type:Frequency Synthesis; Frequency:4GHz; Supply Current:20mA; Supply Voltage Min:2.7V; Supply Voltage Max:3.3V; Digital IC Case Style:LFCSP; No. of Pins:20; Package / Case:20-LFCSP ;RoHS Compliant: Yes |
| ADF4153ABCPZ-RL7 | 制造商:Analog Devices 功能描述:SINGLE RF F-N PLL 制造商:Analog Devices 功能描述:Fractional-N Frequency Synthesizer 20-Pin LFCSP EP T/R 制造商:Analog Devices 功能描述:SINGLE RF F-N PLL - Tape and Reel 制造商:Analog Devices 功能描述:IC PLL FREQ SYNTHESIZER 20LFCSP 制造商:Analog Devices Inc. 功能描述:Phase Locked Loops - PLL Single RF F-N PLL |
| ADF4153ABRUZ | 制造商:Analog Devices 功能描述:SINGLE RF F-N PLL - Rail/Tube 制造商:Analog Devices 功能描述:ngle RF F-N PLL |
| ADF4153ABRUZ-RL7 | 制造商:Analog Devices 功能描述:SINGLE RF F-N PLL - Tape and Reel 制造商:Analog Devices 功能描述:Single RF F-N PLL |
| ADF4153BCP | 制造商:Analog Devices 功能描述:PLL Frequency Synthesizer Single 20-Pin LFCSP EP 制造商:Analog Devices 功能描述:IC SYNTHESIZER PLL |
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