- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385711 > PDSP16350 (Mitel Networks Corporation) I/Q Splitter/NCO(分裂器/數(shù)字化控制的晶體振蕩器（對精確，數(shù)字化的正弦和余弦波形提供一個解決方案）) PDF資料下載
參數(shù)資料
| 型號： | PDSP16350 |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | I/Q Splitter/NCO(分裂器/數(shù)字化控制的晶體振蕩器（對精確，數(shù)字化的正弦和余弦波形提供一個解決方案）) |
| 中文描述： | 的I / Q分配器/士官（分裂器/數(shù)字化控制的晶體振蕩器（對精確，數(shù)字化的正弦和余弦波形提供一個解決方案）） |
| 文件頁數(shù)： | 7/15頁 |
| 文件大?。?/td> | 314K |
| 代理商： | PDSP16350 |
PDSP16350
7
1
2
3
4
5
CLK
RESET
DATA IN
RESULT
32
33
34
35
A
B
A
B
Device Reset
Apply first data
First Result Available
C
D
JUMP
PI
36
37
Apply phase
increment
MODE
16 bit
Cordic
Sin / Cos
Generator
A/D
Converter
Phase
Increment
Value
Analog
Data
D17:0
D33:18
PDSP
16350
PDSP16256
EPROM
I
Q
O/P
DATA
Fig. 6 Amplitude Modulation (34bit frequency accuracy)
Fig. 5 IQ Split Function
Fig. 4 shows the operation of the device when loading the
phase increment directly from the DIN bus. First the device
must be reset then data is presented on each clock cycle. The
amplitude modulation value is presented on the most signifi-
cant 16 bits while the phase increment is presented on the
least significant 18 bits. The first valid result is obtained after
31 cycles. (In this mode the least significant 16 bits of the
phase increment register remain low).
Fig.6 shows the operation of the device when using the full
34 bits of the phase increment register. First the device must
be reset, then the full 34 bits of the phase increment register
are loaded from the DIN bus by taking signal JUMP high
before the rising edge of the clock. Following this new data can
be presented on each cycle of the clock. The amplitude
modulation value is presented on the most significant 16 bits
while the phase increment is presented on the least significant
18 bits. The least significant 16
bits of the phase increment reg-
ister remain fixed at the value
loaded using JUMP. The first
valid result is obtained after 31
cycles. When using JUMP to
load the phase increment regis-
ter, normal operation cannot be
maintained. This is because the
amplitude modulation value
normally presented on the most
significant 16 bits of the DIN bus
are replaced by part of the new
phase increment value.
The AM mode is useful in
systems requiring frequency
sweeps. By varying the ampli-
tudes at different frequencies, it
is possible to compensate for
the analog gain characteristics
of amplifiers further along in the
system.
It can also be used to generate the in-phase and quadra-
ture components of an analog waveform, which has been
digitized and which is to be processed using complex tech-
niques. Such a quadrature heterodyning system, alternatively
known as an IQ splitter, is shown in Fig. 5.
The output from an A/D converter drives the D33:18 inputs
of the PDSP16350. If all sixteen inputs are not required, the
unused least significant bits should be tied to ground, and the
more significant inputs connected to the A/D converter. Multi-
plying an input signal with a local oscillator in this manner
produces both sum and difference components. The former
can be removed by using the PDSP16256 Programmable FIR
Filter.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PDSP16350 | I/Q Splitter/NCO |
| PDSP16488A MA | Single Chip 2D Convolver with Integral Line Delays(單片2D環(huán)繞的圖象處理設(shè)備（帶集成延遲線）) |
| PDSP16488A | Single Chip 2D Convolver with Integral Line Delays |
| PDSP16488MA | Single Chip 2D Convolver with Integral Line Delays |
| PDSP16488A | Single Chip 2D Convolver with Integral Line Delays(單片2D環(huán)繞的圖象處理設(shè)備（帶集成延遲線）) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PDSP16350/A0/AC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Trigonometric Function Generator |
| PDSP16350/A0/GC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Trigonometric Function Generator |
| PDSP16350/B0/AC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Trigonometric Function Generator |
| PDSP16350/B0/GC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Trigonometric Function Generator |
| PDSP16350_96 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:I/Q Splitter/NCO |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。