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TDA2614 数据表(PDF) 4 Page - NXP Semiconductors |
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TDA2614 数据表(HTML) 4 Page - NXP Semiconductors |
4 / 10 page July 1994 4 Philips Semiconductors Product specification 6 W hi-fi audio power amplifier TDA2614 PINNING SYMBOL PIN DESCRIPTION n.c. 1 not connected MUTE 2 mute input 1/2VP/GND 3 1/2 supply (or ground at symmetrical power supplies) n.c. 4 not connected GND/ −V P 5 ground (or negative supply rail at symmetrical power supplies) OUT 6 output VP 7 supply voltage INV 8 inverting input −INV 9 non-inverting input Fig.2 Pin configuration. handbook, halfpage MCD367 - 1 1 2 3 4 5 6 7 8 9 P V OUT MUTE INV TDA2614 / GND P GND / – V n.c. – INV n.c. P 1/2 V FUNCTIONAL DESCRIPTION The TDA2614 is a hi-fi power amplifier designed for mains fed applications, such as radio and TV. The circuit is optimally designed for asymmetrical power supplies, but is also well-suited to symmetrical power supply systems. An output power of 6 W (THD = 0.5%) can be delivered into an 8 Ω load with a supply of 24 V. The gain is internally fixed at 30 dB, thus offering a low gain spread. A special feature is the input mute circuit. This circuit disconnects the non-inverting input when the supply voltage drops below 10 V, while the amplifier still retains its DC operating adjustment. The circuit features suppression of unwanted signals at the input, during switch-on and switch-off. The mute circuit can also be activated via pin 2. When a current at 300 µA is present at pin 2, the circuit is in the mute condition. The device is provided with two thermal protection circuits. One circuit measures the average temperature of the crystal and the other measure the momentary temperature of the power transistors. These control circuits attack at temperatures in excess of 150 °C, so a crystal operating temperature of max. 150 °C can be used without extra distortion. With the derating value of 8 K/W, the heatsink can be calculated as follows: at RL =8 Ω and VS = 24 V, dissipation is 4.1 W. With a maximum ambient temperature of 60 °C, the thermal resistance of the heatsink is: R th 150 60 – 4.1 ---------------------- 8 – 14 K/W. == |
类似零件编号 - TDA2614 |
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类似说明 - TDA2614 |
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