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TDA8946AJ 데이터시트(PDF) 1 Page - NXP Semiconductors |
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1 / 20 page TDA8946AJ 2 x 15 W BTL audio amplifier with DC gain control Rev. 01 — 01 March 2002 Product data M3D541 1. General description The TDA8946AJ is a dual-channel audio power amplifier with DC gain control. It has an output power of 2 × 15 W at an 8 Ω load and an 18 V supply. The circuit contains two Bridge-Tied Load (BTL) amplifiers with an all-NPN output stage and standby/mute logic. The overall gain can be adjusted from +30 dB down to −50 dB using a DC control voltage. This feature can be used for volume control or for a preset gain. The TDA8946AJ comes in a 17-pin DIL-bent-SIL (DBS) power package and is pin compatible with the TDA8946J. 2. Features s Gain/volume adjustment via a DC control pin s Soft clipping s Operating at a low supply voltage s Standby and mute mode s No on/off switching plops s Low standby current s High supply voltage ripple rejection s Outputs short-circuit protected to ground, supply and across the load s Thermally protected s Printed-circuit board compatible with TDA8944AJ and TDA8580J. 3. Applications s Mains fed applications (e.g. TV sound) s PC audio s Portable audio. 4. Quick reference data Table 1: Quick reference data Symbol Parameter Conditions Min Typ Max Unit VCC supply voltage 4.5 18 18 V Iq quiescent supply current VCC =18V; RL = ∞ -45 55 mA Istb standby supply current - - 10 µA Po output power THD = 10%; RL =8 Ω; VCC =18V 13 15 - W THD total harmonic distortion Po =1W - 0.07 0.5 % |
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