参数资料
型号: HSP50214BVIZ
厂商: Intersil
文件页数: 11/62页
文件大小: 0K
描述: IC DOWNCONVERTER 14BIT 120-MQFP
标准包装: 24
功能: 降频器
RF 型: AMPS,CDMA,GSM,TDMA
封装/外壳: 120-BQFP
包装: 托盘
HSP50214B
f S
2f S
3f S
4f S
5f S
6f S
7f S
8f S
9f S
10f S
5MHz
10MHz
15MHz 20MHz 25MHz 30MHz 35MHz 40MHz
45MHz
50MHz
THE INPUT DATA SPECTRUM SAMPLED AT RATE R = f S
f’ S /8
5MHz
f’ S /4
10MHz
3f’ S /8
15MHz
f’ S /2
20MHz
5f’ S /8
25MHz
3f’ S /4
30MHz
7f’ S /8
35MHz
f ’ S
40MHz
FIGURE 6. INTERPOLATION SPECTRUM: INTERPOLATE BY 8 THE INPUT DATA WITH ZERO STUFFING; SAMPLE AT RATE R = f’s
4MHz
8MHz
12MHz 16MHz 20MHz 24MHz
28MHz 32MHz 36MHz 40MHz
DECIMATE BY 10 AND CIC FILTER; SAMPLE AT RATE R = f’s/10
85dB DYNAMIC RANGE BANDWIDTH
CIC FILTER
CIC FILTER ALIAS PROFILE
FREQUENCY
RESPONSE
O.5MHz
1MHz
2MHz
3MHz
4MHz
FIGURE 7. ALIAS PROFILE AND THE 85dB DYNAMIC RANGE BANDWIDTH
μ PROC
INPUT LEVEL
DETECTOR (24-BIT
DAC
ERROR VALUE)
IF
INPUT
A/D
THRESH
PDC
GCA
FIGURE 8. PROCESSOR BASED EXTERNAL IF AGC
11
FN4450.4
May 1, 2007
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