TDA7406 datasheet(31/64 Pages) STMICROELECTRONICS

номер детали	TDA7406

подробное описание детали	Car radio signal processor

PDF	64 Pages

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производитель	STMICROELECTRONICS [STMicroelectronics]

домашняя страница	http://www.st.com

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TDA7406

Noise blanker part

31/64

Noise blanker part

6.1

Features:

●

AM and FM mode

●

internal 2nd order 140kHz high-pass filter for MPX path

●

internal rectifier and filters for AM-IF path

●

programmable trigger thresholds

●

trigger threshold dependent on high frequency noise with programmable gain

●

additional circuits for deviation- and fieldstrength-dependent trigger adjustment

●

4 selectable pulse suppression times for each mode

●

programmable noise rectifier charge/discharge current

6.2

Noise blanker electrical characteristics

Table 6.

Noise blanker electrical characteristics

All parameters measured in FM mode if not otherwise specified.

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

Trigger Threshold(1)

meas.with

VPEAK=0.9V

111

110

101

100

011

010

001

000

TRNOISE

noise controlled

Trigger Threshold

meas.with

VPEAK=1.5V

260

220

180

140

RECT

Rectifier Voltage

VMPX=0mV

0.5

0.9

1.3

VMPX=50mV, f=150kHz

1.5

1.7

2.1

VMPX=200mV, f=150kHz

2.5

2.9

RECT

DEV

Deviation dependent

Rectifier Voltage

meas.with

VMPX=500mV

(75kHz dev.)

0.5

0.9

1.7

2.5

0.9 (off)

1.2

2.0

2.8

1.3

1.5

2.3

3.1

VOP

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