1995 Dec 19

10

Philips Semiconductors

Preliminary specification

Sound fader control circuit

TEA6320

Notes to the characteristics

1. The indicated values for output power assume a 6 W power amplifier at 4

Ω with 20 dB gain and a fixed attenuator

of 12 dB in front of it. Signal-to-noise ratios exclude noise contribution of the power amplifier.

2. The transmission contains: total initialization with MAD and subaddress for volume and 8 data words, see also

definition of characteristics, clock frequency = 50 kHz, repetition burst rate = 400 Hz, maximum bus signal

amplitude = 5 V (p-p).

use it”, can be ordered using the code 9398 393 40011.

Mute function (see Fig.10)

mute switch level (2

−

1.45

−

V

mute active

input level

−−

1.0

V

input current

−300

−−µA

mute passive: level internally defined

saturation voltage

−−

V

delay until mute passive

−−

0.5

ms

discharge current

0.3

0.6

1.2

µA

charge current

−300

−150

−µA

delay switch level (3

−

2.2

−

V

delay time

−

100

−

ms

window for audio signal zero

crossing detection

−

30

40

mV

Muting at power supply drop

supply drop for mute active

−

0.7

−

V

reset position)

increasing supply voltage start of

reset

−−

2.5

V

end of reset

5.2

6.5

7.2

V

decreasing supply voltage start of

reset

4.2

5.5

6.2

V

HIGH level input voltage

3

−

9.5

V

LOW level input voltage

−0.3

−

+1.5

V

HIGH level input current

−10

−

+10

µA

LOW level input current

−10

−

+10

µA

LOW level output voltage

−−

0.4

V

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT