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| MOSA ELECTRONICS FEATURES Wide temperature range No switch-ON/OFF clicks Excellent power supply ripple rejection Low power consumption Short-circuit resistant High performance : - high SNR - high slew rate - low distortion * Large output voltage swing * * * * * * MS6308 Class AB stereo headphone driver APPLICATIONS * * * * * CD-RWDVD-RW CD-ROMDVD-ROM Motherboard MP3PDA Portable Digital Audio DESCRIPTION The MS6308 is an integrated class AB stereo headphone driver contained in an SO8 package. The device is fabricated in a CMOS process and has been primarily developed for portable digital audio applications. MS6308 is pin and function compatible with the Philips, TDA1308T. PINNING Symbol OUTA -INA +INA VSS +INB -INB OUTB VDD Pin 1 2 3 4 5 6 7 8 Description output A inverting input A non-inverting input A negative supply non-inverting input B inverting input B output B positive supply OUTA 1 -INA 2 +INA 3 VSS 4 Pin configuration 8 VDD MS6308 7 OUTB 6 -INB 5 +INB BLOCK DIAGRAM OutA -INA +INA VSS 1 2 3 4 + + 8 VDD 7 OutB 6 -INB 5 +INB Fig.1 Block Diagram -1- www.mosanalog.com.tw MOSA ELECTRONICS ELECTRICAL CHARACTERISTICS VDD = 5V; VSS = 0V; f = 1 kHz; RL = 32 ; Measured in test circuit of Fig.2 Symbol VDDs VDDd VSS I DD Ptot VESD Parameter single supply voltage dual supply voltage negative supply voltage supply current total power dissipation Electrostatic Discharge Conditions Min 2.8 1.4 -1.4 6000 Typ 5.0 2.5 -2.5 3 15 - MS6308 Class AB stereo headphone driver RL not connected RL not connected MIL-STD-883D Method 3015.7 Max 7.0 3.5 -3.5 5 25 - Unit V V V mA mW V DC CHARACTERISTICS Symbol V Ios I bias VCM GV IO RO VO Parameter input offset voltage input bias current common mode voltage open-loop voltage gain maximum output current output resistance output voltage swing Conditions Min 0 0.75 1.5 0.1 Typ 10 10 80 60 0.25 90 70 105 Max 3.5 4.25 3.5 4.9 200 Unit mV pA V dB mA RL = 5 k (THD+N)/S < 0.1% note 1 RL = 16 ; note 1 RL = 5 k; note 1 f = 100 Hz; Vripple=100mV(p-p) RL = 5 k PSRR CS CL power supply rejection ratio channel separation load capacitance V V V dB dB dB pF AC CHARACTERISTICS Symbol (THD+N)/S Parameter total harmonic distortion plus noise Conditions note 2 note 2; RL = 5 k S/N fG Po Ci SR B Notes 1. 2. Values are proportional to VDD (THD+N) / S VDD = 5.0 V; VO = 3.5 V(p-p) (0 dB). < 0.1 signal-to-noise ratio unity gain frequency maximum output power input capacitance slew rate power bandwidth Min 100 Typ -70 0.03 -101 0.0009 110 5.5 60 3 5 20 Max -65 0.06 Unit dB % % dB dB MHz mW pF V/s kHz open-loop;RL=5 k (THD+N)/S < 0.1% unity gain inverting unity gain inverting %. -2- www.mosanalog.com.tw MOSA ELECTRONICS APPLICATION INFORMATION MS6308 Class AB stereo headphone driver VDD 3.9k 100uF VOA RL 10uF 3.9k ViA 2 1 3 8 VREF (typ. 2.5V) 5 10uF MS6308 100uF ViB 3.9k 7 6 4 3.9k 100uF VOB RL F ig.2 Measurement circuit, inverting application Basic application example A typical example of a CD-application with the MS6311 is shown in Fig.3. It features typical decoupling components and a second-order analog post-filter (smoothing filter) stage providing a line output. 420pF 1 2 3 4 BCK WS DATA GND VoR n.c. VoL VDD 8 7 6 5 420pF 50k 50k Headphone (32) 50k 50k Headphone (32) MS6308 100nF MS6311 10 VDD 47uF 100nF MS6308 100nF Fig.3 Note : Example of a 2nd order filter application. No external capacitor loading is allowed at the output pins 6 and 8. -3- www.mosanalog.com.tw MOSA ELECTRONICS MP3 digital to analog converting solution. Fig.4 MP3 DECODER DAC MS6308 Class AB stereo headphone driver Headphone Driver 470pF 20k 1 SUNPLUS BCK WS DATA GND VoR CAP VoL VDD 8 7 6 5 1.2VP-P 50k 10uF 50k 0.1uF 15k 2 1 3 47uF 1.6VP-P SPCA751 STMicroelectronics 2 3 VREF 10uF STA013 4 MS6308 5 PHONE JACK 7 6 22k 47uF Headphone (32) MS6313 3.3V 10 0.1uF 15k 3V AVDD 47uF 0.1uF 450pF 100k 2.2k Power On/Off 50k Fig.4 A first order lowpass filter for DAC output. EXTERNAL DIMENSIONS (Unit : mm Tolerance : 0.1mm) 4.8 8 5 6.0 3.9 1 4 1.27 0.42 0.68 1.4 0.22 1.27 0.42 0.23 -4- www.mosanalog.com.tw MOSA ELECTRONICS TAPE AND REEL (Unit : mm) MS6308 Class AB stereo headphone driver 2.0 0.30 0.05 4.0 0.05 1.5+0.1/-0.0 DIA 1.75 0.3R MAX 5.5 0.05 12.0 0.3 5.4 3.0 3.6 6.9 8.0 1.5 MIN 0.5 Radius Typical 2.0 1.7 ORDERING INFORMATION Part Packaging Marking Package Number Marking Printing Transport Media Tape and Reel MS6308 MS6308 SO8 Ink Tube SOP 8 : Plastic small outline package ; 8 leads. Product Number MOSA Abbreviation DESCRIPTION MS 6308 -5- www.mosanalog.com.tw |
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