參數(shù)資料
型號(hào)： CLC5902
廠商： National Semiconductor Corporation
英文描述： Dual Digital Tuner/AGC
中文描述： 雙數(shù)字調(diào)諧器/自動(dòng)增益控制
文件頁(yè)數(shù)： 16/28頁(yè)
文件大?。?/td> 783K
代理商： CLC5902
Rev. 3.05 May 27, 1999
16
1999 National Semiconductor Corporation
An example filter (STD F2 coefficients, see Figure 22)
with 80dB out-of-band rejection, gain of 1.00, and 0.03 dB
peak to peak passband ripple is created by this set of 32
unique coefficients:
-14, -20, 19, 73, 43, -70, -82, 84, 171, -49, -269, -
34, 374, 192, -449,
-430, 460,751, -357, -1144, 81, 1581, 443, -2026,
-1337, 2437, 2886,
-2770, -6127, 2987, 20544, 29647
A second set of F2 coefficients (GSM set, see Figure 23)
suitable for meeting the stringent wideband GSM require-
ments with a gain of 0.999 are:
-536, -986, 42, 962, 869, 225, 141, 93, -280, -708,
-774, -579, -384,
-79, 536, 1056, 1152, 1067, 789, 32, -935, -1668,
-2104, -2137, -1444,
71, 2130, 4450, 6884, 9053, 10413, 10832
The filter coefficients of both filters can be used to tailor
the spectral response to the user’s needs. For example, the
first can be loaded with the standard set to provide a flat
response through to the second filter. The latter can then
be programmed as a Nyquist (typically a root-raised-
cosine) filter for matched filtering of digital data.
The complete channel filter response for standard coeffi-
cients is shown in Figure 24. Passband flatness is shown in
Figure 25.
The complete filter response for GSM coefficients is
shown in Figure 26.
GSM Passband flatness is shown in Figure 27.
The mask shown in Figure 26 is derived from the ETSI
GSM 5.05 specifications for a normal Basestation Trans-
ceiver (BTS). For interferers, 9dB was added to the carrier
to interference (C/I) ratios. For blockers, 9dB was added to
the difference between the blocker level and 3dB above
the reference sensitivity level.
Figure 21
F1 GSM frequency response
0
0.1
0.2
0.3
0.4
0.5
120
100
80
60
40
20
0
Frequency Response of F1 Using GSM Set
M
Frequency Normalized To Filter Input Sample Rate
Figure 22
F2 STD frequency response
0
0.1
0.2
0.3
0.4
0.5
100
90
80
70
60
50
40
30
20
10
0
Frequency Response of F2 Using STD Set
M
Frequency Normalized To Filter Input Sample Rate
Figure 23
F2 GSM frequency response
0
0.1
0.2
0.3
0.4
0.5
50
45
40
35
30
25
20
15
10
5
0
5
Frequency Response of F2 Using GSM Set
M
Frequency Normalized To Filter Input Sample Rate
Figure 24
CIC, F1, & F2 STD frequency response
0
500
1000
1500
2000
2500
3000
150
100
50
0
Combined Frequency Response of CIC/F1/F2 Using STD Set
M
Frequency (KHz)
F
= 52MHz
Decimation = 192
O
FS
= 270.83kHz
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
CLC5902VLA 功能描述:IC TUNER DIGITAL DUAL 128-PQFP RoHS:否 類(lèi)別:集成電路 (IC) >> 線(xiàn)性 - 音頻處理 系列:- 其它有關(guān)文件:STA321 View All Specifications 標(biāo)準(zhǔn)包裝:1 系列:Sound Terminal™ 類(lèi)型:音頻處理器 應(yīng)用:數(shù)字音頻 安裝類(lèi)型:表面貼裝 封裝/外殼:64-LQFP 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:64-LQFP EP（10x10） 包裝:Digi-Reel® 其它名稱(chēng):497-11050-6
CLC5903 制造商:NSC 制造商全稱(chēng):National Semiconductor 功能描述:Dual Digital Tuner / AGC
CLC5903CISM/NOPB 功能描述:上下轉(zhuǎn)換器 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(fēng)格:SMD/SMT 封裝 / 箱體:PQFP-128
CLC5903SM 功能描述:上下轉(zhuǎn)換器 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(fēng)格:SMD/SMT 封裝 / 箱體:PQFP-128
CLC5903SM/NOPB 功能描述:上下轉(zhuǎn)換器 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(fēng)格:SMD/SMT 封裝 / 箱體:PQFP-128
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