TDA7461ND View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

TDA7461ND

Car radio signal processor

STMicroelectronics 

Stereo decoder part

4

Stereo decoder part

TDA7461

4.1

Stereo decoder feature

● 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

● High cut and stereo blend characteristics programmable in a wide range

● Internal Noise blanker with threshold controls

● Multipath detector with programmable internal/external influence

● I2C bus control of all necessary functions

4.2

Stereo decoder electrical characteristics

Table 8.

.

Stereo decoder electrical characteristics

(VS = 9 V; de-emphasis time constant = 50 μs, VMPX = 500 mV, 75 kHz deviation, f = 1 kHz.

GI = 6 dB, Tamb = 25 °C; unless otherwise specified)

Symbol

Parameter

Test condition

Min. Typ. Max. Unit

VIN

Rin

Gmin

Gmax

GSTEP

SVRR

a

THD

MPX input level

Input gain = 3.5 dB

0.5 1.25

Input resistance

70 100 130

Minimum input gain

1.5 3.5 4.5

Max input gain

8.5 11 12.5

Step resolution

1.75 2.5 3.25

Supply voltage ripple rejection Vripple = 100 mV, f = 1 kHz

55

Max channel separation

30 50

Total harmonic distortion

0.02 0.3

VRMS

KΩ

dB

dB

dB

dB

dB

%

-S-----+-----N---

N

Signal plus noise to noise ratio S = 2 Vrms

80 91

dB

Mono/stereo switch

VPTHST1

VPTHST0

VPTHMO1

VPTHMO0

PLL

Pilot threshold voltage

Pilot threshold voltage

Pilot threshold voltage

Pilot threshold voltage

Δf/f

Capture range

for Stereo, PTH = 1

for Stereo, PTH = 0

for Mono, PTH = 1

for Stereo, PTH = 0

10 15 25

mV

15 25 35

mV

7

12 17

mV

10 19 25

mV

0.5

%

20/48

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