TDA7462 datasheet(7/25 Pages) STMICROELECTRONICS

7 / 25 page

ELECTRICAL CHARACTERISTICS (continued)

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

GENERAL

eNO

Output Noise

BW = 20 Hz to 20 KHz

output muted

315

µV

BW = 20 Hz to 20 KHz

all gain = 0dB single ended

inputs

µV

S/N

Signal to Noise Ratio

all gains = 0dB flat; VO = 2VRMS

106

bass treble at 12dB;

a-weighted; VO = 2.6VRMS

100

Distortion

VIN = 1VRMS; all stages 0dB

0.005

0.1

VIN = 1VRMS; Bass & Treble = 12dB

0.05

0.1

Channel separation Left/Right

100

Total Tracking Error

AV = 0 to -20dB

-1

AV = -20 to -60dB

-2

MAIN FEATURES SUMMARY

Input Multiplexer

One fully differential CD stereo input with

switchable attenuation

One quasi-differential stereo input

Three single-ended stereo inputs

One1 differential mono input

In-Gain 0..15dB, 1dB step

Internal Offsetcancellation (AutoZero)

Separate source selector for rear channel

Beep

Internal beep with 2 frequencies

Mixing stage

4 step-mixing stage with phone or rear-selector

as mix-signals

Loudness

Second order frequency response

Programmable center frequency and quality

factor

15 x 1dB attenuation steps

Selectable flat-mode (constant attenuation)

Volume

0.5dB attenuion step

80dB control range

Soft-step control with programmable times

Compander

Dynamic range compression for use with CD

source

2:1 compression rate

Max. gain 15dB

Bass

2nd order frequency response

Center frequency programmable in 4 steps

DC gain programmable

15 x 1dB steps

Treble

2nd order frequency response

Center frequency programmable in 4 steps

7 x 2dB steps

Voice Bandpass

2nd order Butterworth highpass filter with pro-

grammable cut-off frequency

2nd order butterworth lowpass filter with pro-

grammable cut-off frequency

Speaker

Four independent speaker controls in 1dB

steps

Control range 50dB

Separate Mute drive

Subwoofer

Differential mono output

Control range 50dB

2nd order lowpass filter

Mute Functions

Direct mute

TDA7462

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