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參數(shù)資料
| 型號： | HSP50216KI |
| 廠商： | HARRIS SEMICONDUCTOR |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | Four-Channel Programmable Digital DownConverter |
| 中文描述： | TELECOM, CELLULAR, BASEBAND CIRCUIT, PBGA196 |
| 封裝： | BGA-196 |
| 文件頁數(shù)： | 13/53頁 |
| 文件大?。?/td> | 561K |
| 代理商： | HSP50216KI |
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multiplexed together to get the desired 8.192MSPS. The
input sample rate to the final filter of each channel must
meet Nyquist for the final output to assure that no
information is lost due to aliasing.
The number of FIR taps available for these requirements is
calculated as follows:
65536/2048 = 32 clocks
minus (8writes + 1wait + 1jump = 10clocks)
= 22 clocks
Therefore, the number of taps is:
22 x 2 = 44 taps.
Multiplexing the four outputs gives a final output sample rate
of 8.192.
The impulse response is 44 taps at 16.384M or 22 output
samples (11 symbols at 4.096M).
The AGC loop filter output of channel 4 can be routed to
control the forward AGC gain control of all four channels.
This assures that the gains of the four back end sections are
the same. The gain error, however, is only computed from
every fourth output sample.
The back end processing sections of two or more HSP50216s
can be combined using the same polyphase approach, but
the AGC gain from one part cannot be shared with another
part (except via the
μ
P interface), so polyphase filter using
multiple parts would typically usually use a fixed gain.
Filter Sequencer
SAMPLE FILTER #4 PROGRAM
STEP
INSTRUCTION
0
Wait for enough input samples (8 in this case)
1
FIR
type = even symmetry
44 taps
decx8
compute one output
memory block size 64
memory block start at 0
coefficient block start at 64
step size 1
output to AGC
offset memory read pointers by 0, -2, -4, -6
2
Jump, Unconditional, to 0
HSP50216
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| HSR312 | PHOTOVOLTAIC SOLID-STATE RELAY OPTOCOUPLERS |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HSP50216KIZ | 功能描述:上下轉(zhuǎn)換器 MULTI-CH PROGRAM CONV BGA PKG IND RoHS:否 制造商:Texas Instruments 產(chǎn)品:Down Converters 射頻:52 MHz to 78 MHz 中頻:300 MHz LO頻率: 功率增益: P1dB: 工作電源電壓:1.8 V, 3.3 V 工作電源電流:120 mA 最大功率耗散:1 W 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PQFP-128 |
| HSP50306 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Digital QPSK Demodulator |
| HSP50306 WAF | 制造商:Intersil Corporation 功能描述: |
| HSP50306_04 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Digital QPSK Demodulator |
| HSP50306SC-25 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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