tda18219hn NXP Semiconductors, tda18219hn Datasheet - Page 16

• Manufacturer Part Number: tda18219hn
• Description: Silicon Tuner For Terrestrial And Cable Digital Tv Reception
• Manufacturer: NXP Semiconductors

NXP Semiconductors
Table 19.
TDA18219HN_1
Objective data sheet
Address Register
13h
IF_byte_1
IF Filtering bit descriptions
10.1.7 IF Filtering
Bit
7 to 6 IF_HP_Fc[1:0]
5
4 to 3 LP_FC_Offset[1:0] R/W
2 to 0 LP_Fc[2:0]
Table 18.
[1]
IF_Level[2:0] (hex)
111
110
101
100
011
010
001
000
Output level depends on standard and ADC headroom
Symbol
IF_Notch
Tuner output level
Rev. 01 — 3 February 2010
Output level (V (p-p)
differential)
0.5
0.6
0.7
0.85
0.8
1
1.25
2
Access Value
R/W
R/W
R/W
Silicon Tuner for terrestrial and cable digital TV reception
00
01
10
11
0
1
00
01
10
11
100
000
001
010
011
101
11x
[1]
)
Description
tunes the IF HPF cut-off frequency.
frequency must be set in accordance with the
desired reception standard.
high-pass frequency:
enables or disables a notch implemented for
adjacent N − 1 sound carrier suppression. The notch
frequency depends on LP_Fc.
enables offset to LPF cut-off frequency providing
further adjacent channel rejection
selects the IF LPF cut-off frequency. It must be set
according to desired reception standard.
LP cut-off frequency:
0.4 MHz
0.85 MHz
1 MHz
1.5 MHz
OFF
ON
0
−4 %
−8 %
forbidden
1.7 MHz
6 MHz
7 MHz
8 MHz
forbidden
forbidden
forbidden
Minimum gain (dB)
−12
−10.3
−9
−7.5
−8
−6
−4
0
TDA18219HN
IF notch frequency
-
6.5 MHz
7.25 MHz
8.25 MHz
forbidden
forbidden
forbidden
Maximum gain (dB)
18
19.7
21
22.5
22
24
26
30
© NXP B.V. 2010. All rights reserved.
The high-pass
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