參數(shù)資料
型號(hào)： TDA7420
廠商： STMICROELECTRONICS
元件分類： 消費(fèi)家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PQFP64
封裝： 14 X 14 MM, TQFP-64
文件頁(yè)數(shù)： 3/29頁(yè)
文件大?。?/td> 230K
代理商： TDA7420
80KHz LP
SIGNAL PATH
ATC
AUTOMATIC
THRESHOLD
CONTROL
PEAK+VTH
RECT-PEAK
BUF
PEAK
AMP
RECT
-
+
PEAK COMP
REF.
BLANK COMP
1
4
5
I
2
C-BUS
ADDITIONAL THRESHOLD
CONTROL
(ATC-SB, MPX_RECT)
40
s
LEFT
RIGHT
to INPUT SELECTOR
of AUDIOPROC.
CMOS OUTPUT
STAGE
MPX IN
VR
VSB
CPEAK
47nF
RPEAK
82K
CBLANK
330pF
TRIGGER
OUT
40
s
D94AU189A
Figure 1: Block Diagram of the Noise Blanker
65mV
30mV
8 STEPS
NOISE ADJUSTED
TRIG. THRESHOLD
280mV
240mV
180mV
140mV
0.9V
VTH
1.4V
VPEAK(V)
D94AU186B
Figure 2: Trigger Threshold vs. Vpeak
TDA7420
11/29
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PDF描述
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