MOSA MS6308 Class AB Stereo Headphone Driver Class AB Stereo Headphone Driver Low Distortion, Excellent PSRR FEATURES APPLICATIONS ‧Low supply voltage 2.8 to 6.5V ‧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 ‧Space saving package SOP8, MSOP8 ‧CD-RW、DVD-RW ‧CD-ROM、DVD-ROM ‧MP3、PDA ‧Portable Digital Audio ‧Cross-reference : TDA1308T DESCRIPTION BLOCK DIAGRAM 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. OutA 1 8 VDD -INA 2 - +INA 3 + 7 OutB VSS 4 - 6 -INB + 5 +INB PIN CONFIGURATION Symbol Pin Description OUTA 1 Output A -INA 2 Inverting input A +INA 3 Non-inverting input A VSS 4 Negative supply +INB 5 Non-inverting input B -INB 6 Inverting input B OUTB 7 Output B VDD 8 Positive supply REV 2 8 VDD OUTA 1 -INA 2 +INA 3 VSS 4 1/8 MS6308 7 OUTB 6 -INB 5 +INB www.mosanalog.com MOSA MS6308 Class AB Stereo Headphone Driver ORDERING INFORMATION Package Part number Packaging Marking Transport Media 8-Pin SOP (lead free) MS6308GTR MS6308G 2.5k Units Tape and Reel 8-Pin SOP (lead free) MS6308GU MS6308G 100 Units Tube 8-Pin MSOP (lead free) MS6308MGTR 6308G 3.5k Units Tape and Reel 8-Pin MSOP (lead free) RoHS Compliance MS6308MGU 6308G 80 Units Tube ABSOLUTE MAXIMUM RATINGS Symbol Parameter Rating Unit 6.5 V -6000 to 6000 -65 to 150 V ℃ -40 to 85 ℃ VDD Supply Voltage VESD Electrostatic Handling TSTG Storage Temperature Range TA Operating Ambient Temperature Range TJ Maximum Junction Temperature 150 ℃ TS Soldering Temperature, 10 seconds Thermal Resistance from Junction to Ambient in Free Air MSOP (enhance thermal pad) SOP8 260 ℃ 50 210 ℃/W RTHJA OPERATING RATINGS Symbol VDD REV 2 Parameter Supply Voltage 2/8 Min Typ Max Unit 2.8 - 6.5 V www.mosanalog.com MOSA MS6308 Class AB Stereo Headphone Driver 5V ELECTRICAL CHARACTERISTICS (Ta=25℃, VDD=5V, VSS=0V, VO=3.5Vpp, f=1kHz, RL=32; unless otherwise specified) Symbol Parameter Conditions Min Typ Max Unit DC Characteristics IQ Quiescent current Vo=0Vpp, 2 channels VO Maximum output voltage swing (THD+N)/S<0.1% PSRR Power supply rejection ratio Vripple = -20dBV, 100Hz CS Cannel separation - 3.2 4 mA 3.5 4 - Vpp - 70 - dB - 100 - dB - -75 -67 dB AC Characteristics THD+N Total harmonic distortion plus noise S/N Signal-to-noise ratio SR Slew rate Po Maximum output power (THD+N)/S<0.1% - 0.017 0.044 % 100 110 - dB Unity gain inverting - 5 - V/s (THD+N)/S<0.1%, 2 ch - 124 - mW Min Typ Max Unit 2.8V ELECTRICAL CHARACTERISTICS (Ta=25℃, VDD=2.8V, VSS=0V, VO=2Vpp, f=1kHz, RL=32; unless otherwise specified) Symbol Parameter Conditions DC Characteristics IQ Quiescent current Vo=0Vpp, 2 channels VO Maximum output voltage swing (THD+N)/S<0.1% PSRR Power supply rejection ratio Vripple = -20dBV, 100Hz CS Cannel separation - 2.3 3 mA 1.8 2 - Vpp - 66 - dB - 92 - dB - -70 -63 dB AC Characteristics THD+N Total harmonic distortion plus noise S/N Signal-to-noise ratio Po Maximum output power REV 2 (THD+N)/S<0.1% (THD+N)/S<0.1%, 2 ch 3/8 - 0.031 0.070 % 90 100 - dB - 31 - mW www.mosanalog.com MOSA MS6308 Class AB Stereo Headphone Driver TYPICAL PERFORMANCE CHARACTERISTICS (Ta=25℃, RL=32; unless otherwise specified) f=20kHz f=20kHz f=20Hz THD+N (%) f=20Hz THD+N (%) THD+N (%) f=20kHz f=20Hz f=1kHz f=1kHz f=1kHz VDD=5V VDD=3.3V VDD=2.8V OUTPUT VOLTAGE (dBV) OUTPUT VOLTAGE (dBV) OUTPUT VOLTAGE (dBV) THD+N vs. output voltage THD+N vs. output voltage THD+N vs. output voltage VDD=5V VO=3.5Vpp VDD=3.3V VO=2Vpp VDD=5V VO=3.5Vpp VDD=5V VDD=2.8V VO=2Vpp VDD=3.3V VO=2Vpp VDD=2.8V PSRR (dB) THD+N (%) VDD=2.8V VO=2Vpp CHANNEL SEPARATION (dB) VDD=3.3V VRR=-20dBV Vref=1/2VDD FREQUENCY (Hz) FREQUENCY (Hz) Channel separation vs. frequency PSRR vs. frequency QUIESCENT CURRENT (mA) FREQUENCY (Hz) THD+N vs. frequency SUPPLY VOLTAGE (V) Quiescent current vs. supply voltage REV 2 4/8 www.mosanalog.com MOSA MS6308 Class AB Stereo Headphone Driver APPLICATION INFORMATION Inverting application VDD 100uF 3.9k 10uF VOA RL 3.9k 2 ViA 8 1 3 VREF 100uF MS6308 (typ. 2.5V) 5 10uF ViB 7 3.9k 6 4 100uF 3.9k VOB RL Fig.2 Measurement circuit, inverting application Example of CD application with MS6311 MS6311 BCK 56k VoR 68pF n.c WS 1uF DATA GND 15k 22k 22k 100uF VoL 1.2nF VDD 1nF Headphone (32Ω) MS6308 10Ω 100k Supply 47uF 100k f-3dB = 17.5kHz DC gain = 1.5 VDAC out p-p = 1.32V Vout p-p = 1.98V Fig.3 REV 2 VREF 0.1uF 1uF For VDD = 3.3V Example of a multiple feedback third order lowpass filter application. 5/8 www.mosanalog.com MOSA MS6308 Class AB Stereo Headphone Driver MP3 digital to analog converting solution. Fig.4, Fig5 DAC Headphone Driver 470pF 20k MS6313 1 BCK VoR 8 2 WS CAP 7 3 DATA VoL 6 4 GND VDD 5 1.2VP-P 0.1uF 15k 2 47uF 1 50k VREF 10uF 50k MS6308 10uF PHONE JACK 5 0.1uF Supply 15k 47uF 7 Headphone (32Ω) 6 3V 10Ω 1.6VP-P 3 20k AVDD 47uF 470pF 0.1uF Fig.4 A first order lowpass filter for DAC output with MS6313 DAC Headphone Driver 470pF 20k MS6323 1 BCK VoR 8 2 WS CAP 7 3 DATA VoL 6 4 GND VDD 5 1.65VPP 0.1uF 20k 2 1 50k 1uF 50k VREF PHONE JACK 5 Supply 10Ω 3.3V 1.65VPP MS6308 10uF 0.1uF 47uF 3 20k 7 47uF Headphone (32Ω) 6 20k AVDD 47uF 470pF 0.1uF Fig.5 A first order lowpass filter for DAC output with MS6323 REV 2 6/8 www.mosanalog.com MOSA MS6308 Class AB Stereo Headphone Driver EXTERNAL DIMENSIONS SOP8 8 5 Symbol H E 1 A A1 B C D H E e L 4 D Dimension in mm Min Max 1.35 1.75 0.10 0.25 0.33 0.51 0.19 0.25 4.80 5.00 5.80 6.20 3.80 4.00 1.27 BSC 0.40 1.27 Dimension in inch Min Max 0.0532 0.0688 0.0040 0.0098 0.013 0.020 0.0075 0.0098 0.1890 0.1968 0.2284 0.2440 0.1497 0.1574 0.050 BSC 0.016 0.050 L A A1 e B C MSOP8 (Thermal Pad) Thermal Pad Symbol H A A1 A2 B C D H E e L E Dimension in mm Dimension in inch Min Max Min Max 0.81 1.12 0.032 0.048 0.05 0.15 0.002 0.006 0.76 0.86 0.030 0.038 0.28 0.38 0.011 0.015 0.13 0.23 0.005 0.009 2.90 3.10 0.114 0.122 4.70 5.10 0.185 0.201 2.90 3.10 0.114 0.122 0.65 0.026 0.40 0.66 0.016 0.026 D A A2 A1 e B L C Note : Die pad exposure size is according to lead frame design. REV 2 7/8 www.mosanalog.com MOSA MS6308 Class AB Stereo Headphone Driver TAPE AND REEL (Unit : mm) 2.0 0.05 0.30 0.05 1.5+0.1/-0.0 DIA 4.0 1.75 0.3R MAX 5.5 0.05 12.0 0.3 5.4 3.0 3.6 8.0 1.5 MIN 6.9 0.5 Radius Typical 2.0 1.7 SOP8 2.0 0.30 0.05 0.05 1.5+0.1/-0.0 4.0 1.75 0.3R MAX 5.5 0.05 12.0 0.3 3.3 5.2 8.0 1.5 MIN 0.3 Typical 4.2 3.4 1.6 1.2 MSOP8 REV 2 8/8 www.mosanalog.com