TDA7340G View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

TDA7340G

AUDIO SIGNAL PROCESSOR

STMicroelectronics 

TDA7340G

Figure 4: Block Diagram of the Noise Blanker

MPX IN

LEVEL

VR

VSB

80KHz LP

SIGNAL PATH

140KHz HP

AMP

120KHz HP

LEFT

RIGHT

BUF

RECT

PEAK AUTOMATIC

THRESHOLD

CONTROL

BLANK COMP

PEAK COMP

-

REF.

-

+

+

ATC PEAK+VTH

40µs

5

RECT-PEAK

2

4

I2C-BUS

ADDITIONAL THRESHOLD

CONTROL

(ATC-SB, MPX_RECT)

D95AU330

RPEAK

82KΩ

CPEAK

47nF

CBLANK

330pF

to OUTPUTS

Figure 5: Trigger Threshold vs. Vpeak

VTH

MIN. TRIG. THRESHOLD

8 STEPS

65mV

30mV

0.9V

D95AU331

260mV(01)

220mV(10)

180mV(11)

140mV(00)

NOISE ADJUSTED

TRIG. THRESHOLD

1.5V

VPEAK(V)

18/27

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