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TEA6330T Folha de dados(PDF) 5 Page - NXP Semiconductors |
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TEA6330T Folha de dados(HTML) 5 Page - NXP Semiconductors |
5 / 19 page January 1992 5 Philips Semiconductors Preliminary specification Sound fader control circuit for car radios TEA6330T FUNCTIONAL DESCRIPTION This bipolar IC is an I2C-bus controlled sound/volume controller for car radios including fader function and the possibility of an external equalizer. The sound signal setting is performed by resistor chains in combination with multi-input operational amplifiers. The advantages of this principle are the combination of low noise, low distortion and a high dynamic range. The separated volume controls of the left and the right channel make the balance control possible. The value and the characteristic of the balance is controlled via the I2C-bus. The contour function is performed by setting an extra bass control and optional treble, depending on the actual volume position. Its switching points and its range are also controllable via the I2C-bus. An interface is assigned behind the volume control to loop-in an equalizer (Fig.2). In this case the treble control is switched off, and the bass control can be used to set the contour. Low level control fader is included independent of the volume controls, because the TEA6330T has four driver outputs (for front and rear). An extra mute position for the front, the rear or for all channels is built in. The last function may be used for muting during preset selection. No external interface is required between the microcomputer and this circuit, for all switching and controlling functions are controllable via the two-wire I2C-bus. The separate mute-pin allows to switch the fader into mute position without using the I2C-bus. The on chip power-on reset sets the TEA6330T into the general mute mode. LIMITING VALUES In accordance with the Absolute Maximum System (IEC 134). Ground pins 3 and 10 connected together. * Equivalent to discharging a 200 pF capacitor through a 0 Ω series resistor. ** Equivalent to discharging a 100 pF capacitor through a 1.5 k Ω series resistor. SYMBOL PARAMETER MIN. MAX. UNIT VP supply voltage (pin 18) 0 10 V Ptot total power dissipation 0 700 mW Tstg storage temperature range −55 150 °C Tamb operating ambient temperature range −40 85 °C VESD electrostatic handling* for all pins −±300 V electrostatic handling** for all pins −±4000 V |
Nº de peça semelhante - TEA6330T |
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Descrição semelhante - TEA6330T |
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