TEA6321 Ver la hoja de datos (PDF) - Philips Electronics

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Fabricante

TEA6321

Sound fader control circuit

Philips Electronics 

Philips Semiconductors

Sound fader control circuit

Preliminary specification

TEA6321

SYMBOL

PARAMETER

CONDITIONS

MIN. TYP. MAX. UNIT

Mute function (see Fig.10)

HARDWARE MUTE

Vsw

mute switch level (2 × VBE)

mute active

VswLOW

Ii

input level

input current

mute passive: level internally defined

VswHIGH

td(mute)

saturation voltage

delay until mute passive

ZERO CROSSING MUTE

Id

Ich

VswDEL

td

Vwind

discharge current

charge current

delay switch level (3 × VBE)

delay time

window for audio signal zero

crossing detection

VswLOW = 1 V

Cm = 10 nF

−

1.45 −

V

−

−

−300 −

1.0 V

−

µA

−

−

VCC V

−

−

0.5 ms

0.3 0.6 1.2 µA

−300 −150 −

µA

−

2.2 −

V

−

100 −

ms

−

30

40

mV

Muting at power supply drop

VCCdrop

supply drop for mute active

−

V19 − −

V

0.7

Power-on reset (when reset is active the GMU-bit (general mute) is set and the I2C-bus receiver is in reset

position)

VCC

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

Digital part (I2C-bus pins); note 3

ViH

HIGH level input voltage

ViL

LOW level input voltage

IiH

HIGH level input current

IiL

LOW level input current

VoL

LOW level output voltage

IL = 3 mA

3

−

−0.3 −

−10 −

−10 −

−

−

9.5 V

+1.5 V

+10 µA

+10 µA

0.4 V

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).

3. The AC characteristics are in accordance with the I2C-bus specification. This specification, “The I2C-bus and how to

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

1995 Dec 19

10

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