TDA7420 datasheet(11/29 Pages) STMICROELECTRONICS

部品番号	TDA7420

部品情報	MULTIFUNCTIONAUDIO PROCESSOR

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メーカー	STMICROELECTRONICS [STMicroelectronics]

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11 / 29 page

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

µs

LEFT

RIGHT

to INPUT SELECTOR

of AUDIOPROC.

CMOS OUTPUT

STAGE

MPX IN

VR

VSB

CPEAK

47nF

RPEAK

82K

Ω

CBLANK

330pF

TRIGGER

OUT

40

µs

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

同様の部品番号 - TDA7420

メーカー	部品番号	データシート	部品情報
STMicroelectronics	TDA7421	527Kb / 38P	AM/FM TUNER FOR CAR RADIO AND Hi-Fi APPLICATIONS June 1998
	TDA7421N	325Kb / 38P	AM/FM TUNER FOR CAR RADIO AND HI-FI APPLICATIONS
	TDA7427	144Kb / 21P	AM-FM RADIO FREQUENCY SYNTHESIZER AND IF COUNTER November 1999
	TDA7427A	160Kb / 21P	AM-FM RADIO FREQUENCY SYNTHESIZER AND IF COUNTER July 1998
	TDA7427AAD	160Kb / 21P	AM-FM RADIO FREQUENCY SYNTHESIZER AND IF COUNTER July 1998

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同様の説明 - TDA7420

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