Proprietary/Do not distribute1 Mixed-Signal Product BU (BU2) Elite Semiconductor Memory Technology Inc. AD52068 20Wx2 Stereo Class-D Filter-Free Audio.

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Presentation transcript:

Proprietary/Do not distribute1 Mixed-Signal Product BU (BU2) Elite Semiconductor Memory Technology Inc. AD Wx2 Stereo Class-D Filter-Free Audio Amplifier with Power Limit

Proprietary/Do not distribute2 Features  Single supply voltage 4.5V ~ 24V for loudspeaker driver Built-in LDO  Loudspeaker power from 24V supply BTL Mode: 20W/CH into 8 THD+N PBTL Mode: 40W/CH into 4 THD+N  Loudspeaker power from 12V supply BTL Mode: 10W/CH into 8 THD+N  Adjustable power limit function for speaker protection  Filter-Free operation  Superior EMC performance

Proprietary/Do not distribute3 Functional Block Diagram

Proprietary/Do not distribute4 Pin Assignments

Proprietary/Do not distribute5 Typical Application Circuit Main Chip R Channel Input L Channel Input

Proprietary/Do not distribute6 Operating Gain settings GAIN1GAIN0 Volume Gain (dB) Input Resistance, R in (k  ) The gain of the AD52068 is set by two input pins, GAIN0 and GAIN1

Proprietary/Do not distribute7 Power Limit Function

Proprietary/Do not distribute8 Performance

Proprietary/Do not distribute9 Performance

Proprietary/Do not distribute10 Thermal Performance

Proprietary/Do not distribute11 Competitor List

Proprietary/Do not distribute12 Performance THD + N (%) v.s. Output power (8ohm load) Gain=20dB Load=8ohm+66uH 18V 24V 12V 5V

Proprietary/Do not distribute13 Performance

Proprietary/Do not distribute14 Performance AD52068 PVDD=12V THD vs. output power Fin=10KHz Fin=20Hz Fin=1KHz TPA3110D2

Proprietary/Do not distribute15 Performance AD52068 PVDD=18V Thd vs. output power Fin=10KHz Fin=20Hz Fin=1KHz TPA3110D2

Proprietary/Do not distribute16 EMC Report PVDD=12V load=8ohm Po=8W AMP :AD52068 TV board name: TSUMV59 Source :USB 1k 0dB Sinewave Under -7.59dB

Proprietary/Do not distribute17 Why ESMT win  AD52068 is Inductor Free audio amplifier  High performance and Low cost  Low EMI solution  Strong manufacturing capability with stringent quality and reliability assurance

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