TDA7411 datasheet(17/43 Pages) STMICROELECTRONICS

17 / 43 page

17/43

TDA7411

STEREODECODER PART

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-Soft mute

– High cut- and Stereo blend-characteristics programmable in a wide range

– internal Noise blanker with several threshold controls

– alternative frequency search function

– Multipath-detector with programmable internal/external influence

–I2C-bus control of all necessary functions

ELECTRICAL CHARACTERISTICS

(VS = 8V; deemphasis time constant = 50µs,VMPX = 500mV(75KHz deviation), fm= 1KHz, Gv = 6dB,

Tamb = 27°C; unless otherwise specified)

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

Vin

MPX Input Level

Gv = 3.5dB

0.5

1.25

VRMS

Rin

Input Resistance

100

130

Ω

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

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 = 1

PLL

∆f/f

Capture Range

0.5

DEEMPHASIS and HIGHCUT

tHC50

Deemphasis Time Constant

Bit 7, Subadr, 10 = 0,

VLEVEL >> VHCH

µs

tHC75

Deemphasis Time Constant

Bit 7, Subadr, 10 = 1,

VLEVEL >> VHCH

100

µs

tHC50

Highcut Time Constant

Bit 7, Subadr, 10 = 0,

VLEVEL >> VHCL

100

150

200

µs

tHC75

Highcut Time Constant

Bit 7, Subadr, 10 = 1,

VLEVEL >> VHCL

150

225

300

µs

--------------

TDA7411 Arkusz danych(PDF) 17 Page - STMicroelectronics

TDA7411 Arkusz danych(HTML) 17 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43

Arkusz danych Pobierz

Link URL