參數(shù)資料
型號: TDA8295HN/C2
廠商: NXP SEMICONDUCTORS
元件分類: 接收器
英文描述: AM/FM, AUDIO/VIDEO DEMODULATOR, PQCC40
封裝: 6 X 6 MM, 0.85 MM HEIGHT, PLASTIC, MO-220, SOT618-1, HVQFN-40
文件頁數(shù): 22/83頁
文件大?。?/td> 3440K
代理商: TDA8295HN/C2
TDA8295_C2_2
NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 02 — 27 November 2009
29 of 83
NXP Semiconductors
TDA8295
Digital global standard low IF demodulator for analog TV and FM radio
9.3.6 Filter settings
Table 23.
FILTERS_1 register (address 0Fh) bit description
Legend: * = default value.
Bit
Symbol
Access Value
Description
7 to 5 VID_FILT[2:0]
R/W
video low-pass filter to remove all unwanted
frequencies (own sound carriers) above video
content (see Figure 7)
001*
video low-pass filter 4 MHz
010
video low-pass filter 5 MHz
100
video low-pass filter off
4 to 0 NOTCH_FILT[4:0]
R/W
The notch filter attenuates the adjacent sound
carrier N
1, which is located differently
dependent on channel spacing 6 MHz, 7 MHz or
8 MHz (see Figure 8).
0 0001*
notch filter for 6 MHz channel spacing
(M/N standard)
0 0010
notch filter for 7 MHz channel spacing
(B standard)
0 0100
notch filter for 8 MHz channel spacing (G/H,
D/K, I, L and L-accent standard)
1 0000
notch/low-pass filter off
(1) M/N standard.
(2) All other standards.
Fig 7.
Video low-pass filters for sound carrier suppression
f (MHz)
07
6
24
5
13
001aah358
30
50
10
αresp(f)
(dB)
70
(1)
(2)
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