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TDA8580 Datasheet(PDF) 6 Page - NXP Semiconductors |
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TDA8580 Datasheet(HTML) 6 Page - NXP Semiconductors |
6 / 20 page 1998 Feb 25 6 Philips Semiconductors Preliminary specification Multi-purpose power amplifier TDA8580 FUNCTIONAL DESCRIPTION The TDA8580 is a multi-purpose power amplifier with four amplifiers which can be connected in the following configurations with high output power and low distortion (at minimum quiescent current); • Dual bridge-tied load (BTL) amplifiers • Quad single-ended amplifiers • Dual single-ended amplifiers and one bridge-tied load amplifier. The amplifier can be switched on (play or ‘mute’) and off (‘standby’) by the MUTE and STANDBY pins (for interfacing directly with a microcontroller). One-pin operation is also possible by applying a voltage greater than 8 V to the ‘standby’/’mute’/’on’ selection pin (pin 5) to switch the amplifier in ‘on’ mode. Special attention is given to the dynamic behaviour as follows: • Noise suppression during engine start. • No plops when switching from ‘standby’ to ‘on’. • Slow offset change between ‘mute’ and ‘on’ (controlled by MUTE and STANDBY pins). • Low noise levels, which are independent of the supply voltage. Protections are included to avoid the IC being damaged at: • Over temperature: T > 150 °C. • Short-circuit of the output pin(s) to ground or supply rail. When short-circuited, the power dissipation is limited. • A missing-current limiter which limits the maximum short circuit output current to PGND or VP pins to 1 A. The dissipation and speaker current will be minimized because the short-circuited amplifier is switched off. The chip temperature is limited by the temperature protection. • ESD protection (Human Body Model 3000 V, Machine Model 300 V). • Energy handling. A DC voltage of 6 V can be connected to the output of any amplifier while the supply pins are short-circuited to ground. No high DC current will flow from the supply pins of the amplifier. Diagnostics are available for the following conditions (see Figs 4 to 7). • Amplifier in ‘mute’ • Chip temperature greater than 145 °C • Distortion over 2% due to clipping • Short-circuit protection active. LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134). Note 1. The maximum supply voltage under short circuit conditions is 28 V with an additional resistor in the supply line of tbf Ω. SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT VP supply voltage operating 8 28 V load dump protected; see Fig.3 − 45 V VDIAG voltage on diagnostic pin − 18 V IOSM non-repetitive peak output current − 6A IORM repetitive peak output current − 4.5 A Vrev reverse polarity voltage − 6V Vsc AC and DC short-circuit voltage of output pins across loads and to ground or supply pins no external series resistor in supply line; note 1 − 24 V Ptot total power dissipation − 75 W Tj junction temperature − 150 °C Tstg storage temperature −55 +150 °C Tamb operating ambient temperature −40 +150 °C |
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