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參數(shù)資料
| 型號： | HSP45102SC-40 |
| 廠商： | HARRIS SEMICONDUCTOR |
| 元件分類： | 數(shù)字信號處理外設(shè) |
| 英文描述： | 12-Bit Numerically Controlled Oscillator |
| 中文描述： | 1-BIT, DSP-NUM CONTROLLED OSCILLATOR, PDSO28 |
| 文件頁數(shù)： | 4/7頁 |
| 文件大小： | 48K |
| 代理商： | HSP45102SC-40 |
3-198
register.Ateachclock,thecontentsofthisregisteraresummed
with the current contents of the accumulator to step to the new
phase. The phase accumulator stepping may be inhibited by
holding ENPHAC high. The phase accumulator may be loaded
with the value in the input register by asserting LOAD, which
zeroes the feedback to the phase accumulator.
The phase adder sums the encoded phase modulation bits
P0-1 and the output of the phase accumulator to offset the
phase by 0, 90, 180 or 270 degrees. The two bits are
encoded to produce the phase mapping shown in Table 1.
This phase mapping is provided for direct connection to the
in-phase and quadrature data bits for QPSK modulation.
ROM Section
The ROM section generates the 12-bit sine value from the
13-bit output of the phase adder. The output format is offset
binary and ranges from 001 to FFF hexadecimal, centered
around 800 hexadecimal.
TABLE 1. PHASE MAPPING
P0-1 CODING
P1
P0
PHASE SHIFT (DEGREES)
0
0
0
0
1
90
1
0
270
1
1
180
FIGURE 2A. FREQUENCY LOADING ENABLED BY SFTEN
FIGURE 2B. FREQUENCY LOADING CONTROLLED BY SCLK
FIGURE 3. I/O TIMING
SCLK
SD
SFTEN
MSB/LSB
0
1
2
63
62
61
SCLK
SD
SFTEN
MSB/LSB
0
1
2
63
62
61
CLK
LOAD
TXFR
OUT0-11
1
3
4
6
7
8
9
10
11
5
2
NEW
DATA
ENPHAC
SEL_L/M
HSP45102
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HSP45102SC-40Z | 功能描述:可編程振蕩器 W/ANNEAL 12 BIT NCO 28 40MHZ COM RoHS:否 制造商:IDT 封裝 / 箱體:5 mm x 7 mm x 1.5 mm 頻率:15.476 MHz to 866.67, 975 MHz to 1300 MHz 頻率穩(wěn)定性:+/- 50 PPM 電源電壓:3.63 V 負(fù)載電容:10 pF 端接類型:SMD/SMT 輸出格式:LVPECL 最小工作溫度:- 40 C 最大工作溫度:+ 85 C 尺寸:7 mm W x 5 mm L x 1.5 mm H 封裝: |
| HSP45102SI-33 | 制造商:Rochester Electronics LLC 功能描述:12 BIT NUMERICALLY CONTROLLED OSCILLATOR - Bulk |
| HSP45102SI-3396 | 功能描述:可編程振蕩器 12 BIT NCO 28LD SOIC,T&R,33MHZ,IND RoHS:否 制造商:IDT 封裝 / 箱體:5 mm x 7 mm x 1.5 mm 頻率:15.476 MHz to 866.67, 975 MHz to 1300 MHz 頻率穩(wěn)定性:+/- 50 PPM 電源電壓:3.63 V 負(fù)載電容:10 pF 端接類型:SMD/SMT 輸出格式:LVPECL 最小工作溫度:- 40 C 最大工作溫度:+ 85 C 尺寸:7 mm W x 5 mm L x 1.5 mm H 封裝: |
| HSP45102SI-33Z | 功能描述:可編程振蕩器 W/ANNEAL 12 BIT NCO 28 33MHZ IND RoHS:否 制造商:IDT 封裝 / 箱體:5 mm x 7 mm x 1.5 mm 頻率:15.476 MHz to 866.67, 975 MHz to 1300 MHz 頻率穩(wěn)定性:+/- 50 PPM 電源電壓:3.63 V 負(fù)載電容:10 pF 端接類型:SMD/SMT 輸出格式:LVPECL 最小工作溫度:- 40 C 最大工作溫度:+ 85 C 尺寸:7 mm W x 5 mm L x 1.5 mm H 封裝: |
| HSP45102SI-40 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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