參數(shù)資料
型號: TDA9808T-T
廠商: NXP SEMICONDUCTORS
元件分類: 接收器
英文描述: AM/FM, AUDIO/VIDEO DEMODULATOR, PDSO20
文件頁數(shù): 27/35頁
文件大?。?/td> 170K
代理商: TDA9808T-T
TA1317AN
2002-09-06
34
Test Condition
SW Mode
Note
No.
Parameter
SW5
SW6
SW7
SW8
SW10
SW11
SW17
SW24
Test Method
(unless otherwise specified, VCC = 9 V, Ta = 25 ± 3°C, data = preset values)
14
Vertical EHT compensation
(V EHT compensation)
change amount
OFF
B
ON
OFF
B
ON
A
(1) Input vertical trigger pulse to pin VIN.
Pulse level (VT)
= 3.0 V
(2) Set VD (sub-address: 00) to AC-Coupling mode (data: 81).
(3) Set V SHIFT (sub-address: 01) data to 82.
(4) Connect external power supply (DC voltage
= 0 V) to pin 3 (EHT IN).
(5) Set V-EHT COMPENSATION (sub-address: 02) to minimum (data: 80) and
measure Pin 6 (V NF) amplitude VE (80).
(6) Set V-EHT COMPENSATION (sub-address: 02) to maximum (data: 87) and
measure Pin 6 (V NF) amplitude VE (87).
(7) Calculate change amount VEHT using the following formula.
VE (80) VE (87)
VEHT =
VE (87)
× 100
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