參數(shù)資料
型號: TDA9897HL/V2/S1
廠商: NXP SEMICONDUCTORS
元件分類: 消費(fèi)家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP48
封裝: 7 X 7 MM, 1.40 MM HEIGHT, PLASTIC, SOT313-2, MS-026, LQFP-48
文件頁數(shù): 34/103頁
文件大小: 511K
代理商: TDA9897HL/V2/S1
TDA9897_TDA9898_3
NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 03 — 11 January 2008
36 of 103
NXP Semiconductors
TDA9897; TDA9898
Multistandard hybrid IF processing
[1]
See Table 53 for parameter tuner takeover point accuracy (
αacc(set)TOP).
[1]
See Table 53 for parameter tuner takeover point accuracy (
α
acc(set)TOP2).
Table 47.
Tuner takeover point adjustment bits W9[4:0]
Bit
TOP adjustment (dB
V)
TOPNEG4
TOPNEG3
TOPNEG2
TOPNEG1
TOPNEG0
W9[4]
W9[3]
W9[2]
W9[1]
W9[0]
11111
98.2 typical
:::::see Figure 13
10000
:::::see Figure 13
00000
57.9 typical
Table 48.
W10 - data write register bit allocation
7
6
5
4
3
2
1
0
0
XPOTPOS
TOPPOS4
TOPPOS3
TOPPOS2
TOPPOS1
TOPPOS0
Table 49.
W10 - data write register bit description
Bit
Symbol
Description
7 and 6
-
0 = xed value
5
XPOTPOS
TOP derived from IF AGC via I2C-bus or potentiometer
1 = TOP adjustment by external potentiometer at pin TOP2
0 = see Table 50
4 to 0
TOPPOS[4:0] TOP adjustment for TAGC derived from IF AGC; see Table 50
Table 50.
Tuner takeover point adjustment bits W10[4:0]
Bit
TOP adjustment (dB
V)
TOPPOS4
TOPPOS3
TOPPOS2
TOPPOS1
TOPPOS0
W10[4]
W10[3]
W10[2]
W10[1]
W10[0]
1111199 typical
:::::see Figure 13
1000081[1]
:::::see Figure 13
0000061 typical
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