TDA7406 datasheet(27/64 Pages) STMICROELECTRONICS

27 / 64 page

TDA7406

Stereodecoder part

27/64

Stereodecoder part

5.1

Features:

●

No external components necessary

●

PLL with adjustment free, fully integrated VCO

●

Automatic pilot dependent MONO/STEREO switching

●

Very high suppression of intermodulation and interference

●

Programmable Roll-Off compensation

●

Dedicated RDS-Softmute

●

Highcut and Stereoblend-characteristics programmable in a wide range

●

FM/AM noiseblanker with several threshold controls

●

Multipath-detector with programmable internal/external influence

●

I2C-bus control of all necessary functions

5.2

Stereodecoder electrical characteristics

Table 5.

Stereodecoder electrical characteristics

VS = 9V, de-emphasis time constant = 50µs, MPX input voltage VMPX = 500mV (75kHz

deviation), modulation frequency = 1kHz, input gain = 6dB, Tamb = 27°C, unless

otherwise specified.

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Vin

MPX Input Level

Input Gain = 3.5dB

0.5

1.25

Vrms

Rin

Input Resistance

100

130

Gmin

Min. Input Gain

1.5

3.5

4.5

Gmax

Max. Input Gain

8.5

12.5

Gstep

Step Resolution

1.75

2.5

3.25

SVRR

Supply Voltage Ripple Rejection

Vripple = 100mV, f = 1kHz

Max. Channel Separation

THD

Total Harmonic Distortion

fin=1kHz, mono

0.02

0.3

Signal plus Noise to Noise Ratio

A-weighted, S = 2Vrms

MONO/STEREO-SWITCH

VPTHST1 Pilot Threshold Voltage

for Stereo, PTH = 1

VPTHST0 Pilot Threshold Voltage

for Stereo, PTH = 0

VPTHMO1 Pilot Threshold Voltage

for Mono, PTH = 1

VPTHMO0 Pilot Threshold Voltage

for Mono, PTH = 0

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