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MS6333TR Datasheet(PDF) 8 Page - MOSA ELECTRONICS |
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MS6333TR Datasheet(HTML) 8 Page - MOSA ELECTRONICS |
8 / 12 page MOSA MS6333 16-Bit Stereo Audio DAC & Headphone Driver REV1 8 www.mosanalog.com POWER DOWN AND MUTE FUNCTION A microcontroller or microprocessor control power and mute function timing on MS6333 is shown in Figure 3. It could prevent pop noise effectively when power on and power off. The signals of power down function (pin5) and mute function (pin13) are ignored during initial time 350ms when power on. It is better to control mute function after 1sec. The sequence is mute on and then power down when power off. PD VTM POWER 350ms 1sec Voutput >0sec Power on: Delay >350msec from power on to mute off. Power off: Delay >0sec from mute on to power off. Fig.3 Power and mute function timing. APPLICATION INFORMATION Basic application example A typical example of an MP3-application with the MS6333 is shown in Fig.4. Power voltage of digital and analog can be used single supply voltage. AVSS DVDD DGND HP VDD AVDD BCK WS DATA MUTE 100K 1uF 2.2uF 300K PD Headphone Headphone CF VOR-IN RF 47uF 32Ω VOR-OUT CF VOL-IN RF 47uF 32Ω VOL-OUT CAP Decoder Supply 2.7~5.5V 0.1uF 100uF HP VSS 0.1uF 0.1uF MCU MS6333 Note : Vo=0.023663*RF*VDD Vpp RF//CF to decide –3dB point VTM: Mute control voltage For VDD=3V, RL=32Ω, RF =24k, CF =390pF, Vo=1.7Vpp RL=16Ω, RF =22k, CF =470pF, Vo=1.56Vpp Fig.4 MP3 Basic application circuit. |
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