TDA7462 Datasheet, PDF (7/25 Pages) STMicroelectronics – DUAL AUDIOPROCESSOR WITH COMPANDER AND SUBWOOFER OUTPUT

TDA7462
ELECTRICAL CHARACTERISTICS (continued)
Symbol
Parameter
Test Condition
Min. Typ. Max. Unit
GENERAL
e_NO
Output Noise
BW = 20 Hz to 20 KHz
output muted
3
15
µV
BW = 20 Hz to 20 KHz
all gain = 0dB single ended
inputs
10
20
µV
S/N
Signal to Noise Ratio
all gains = 0dB flat; VO = 2VRMS
106
dB
bass treble at 12dB;
a-weighted; VO = 2.6VRMS
100
dB
d
Distortion
VIN = 1VRMS; all stages 0dB
0.005 0.1
%
VIN = 1VRMS; Bass & Treble = 12dB
0.05 0.1
%
SC
Channel separation Left/Right
80
100
dB
ET
Total Tracking Error
AV = 0 to -20dB
-1
0
1
dB
AV = -20 to -60dB
-2
0
2
dB
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
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
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)
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
Volume
0.5dB attenuion step
80dB control range
Soft-step control with programmable times
Subwoofer
Differential mono output
Control range 50dB
2nd order lowpass filter
Compander
Dynamic range compression for use with CD
source
Mute Functions
Direct mute
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