MOSA MS6544/6541 Class AB Stereo Headphone Driver with Mute Stereo Headphone Driver, 0dB / 6dB Gain Low Voltage, Internal Mute Function No Popping Noise When Power On / Off FEATURES APPLICATIONS ‧Low supply voltage 2.7 to 6.5V ‧Internal mute function ‧No popping noise ‧Fixed gain of 6 dB for MS6544 Fixed gain of 0 dB for MS6541 ‧High SNR , Slew rate ‧Low distortion ‧Excellent power supply ripple rejection ‧Low power consumption ‧Large output voltage swing ‧MP3, PDA ‧Portable Digital Audio. ‧CD-ROM, DVD-ROM, CD-RW, DVD-RW ‧Cross-reference : 6dB: BH3544F, NJM2169 0dB: BH3541F, NJM2168 DESCRIPTION BLOCK DIAGRAM The MS6544 is an integrated class AB stereo headphone driver contained in an SO8 package. The MS6544 has fixed gain of 6dB and the MS6541 has fixed gain of 0dB. The mute function to prevent popping sounds when the power is turned on and off. It has good performance at low voltage operation, the MS6544/41 ideally suited for use in portable digital audio equipment. OutA 1 MUTE 2 INA 3 6dB (0dB) 8 VDD 6dB (0dB) 7 OutB MUTE BIAS 90k (180k) 90k (180k) 6 VREF 4 5 INB OUTA 1 8 VDD VSS PIN CONFIGURATION Symbol Pin Description OutA 1 Mute 2 INA 3 Output A Mute control (Low: mute on, High: mute off) Input A VSS 4 Negative supply INB 5 Input B VREF 6 Reference volatge OutB 7 Output B VDD 8 Positive supply REV 2 MUTE 2 INA 3 VSS 4 1/9 MS6544 MS6541 7 OUTB 6 VREF 5 INB www.mosanalog.com MOSA MS6544/6541 Class AB Stereo Headphone Driver with Mute ORDERING INFORMATION Package Part number Packaging Marking Transport Media 8-Pin SOP MS6544GTR MS6544G 2.5k Units Tape and Reel 8-Pin SOP MS6544GU MS6544G 100 Units Tube 8-Pin MSOP MS6544MGTR MS6544G 3.5k Units Tape and Reel 8-Pin MSOP MS6544MU MS6544G 80 Units Tube 8-Pin SOP MS6541GTR 8-Pin SOP MS6541GU Lead free, RoHS Compliance MS6541G 2.5k Units Tape and Reel MS6541G 100 Units Tube ABSOLUTE MAXIMUM RATINGS Symbol Parameter Rating Unit 6.5 V -4500 to 4500 VDD Supply Voltage VESD Electrostatic Handling TSTG Storage Temperature Range -65 to 150 V ℃ TA Operating Ambient Temperature Range -40 to 85 ℃ TJ Maximum Junction Temperature 150 ℃ TS Soldering Temperature, 10 seconds 260 ℃ RTHJA Thermal Resistance from Junction to Ambient in Free Air SOP8 210 ℃/W OPERATING RATINGS Symbol VDD REV 2 Parameter Supply Voltage 2/9 Min Typ Max Unit 2.7 - 6.5 V www.mosanalog.com MOSA MS6544/6541 Class AB Stereo Headphone Driver with Mute 5V ELECTRICAL CHARACTERISTICS (Ta=25℃, VDD=5V, VSS=0V, Vo=2Vpp, f=1kHz, AV=1, RL=32; unless otherwise specified) Min Typ Conditions Symbol Parameter Max Unit DC Characteristics Mute On Mute Off 3.7 1.5 3.9 1.6 4.1 mA mA Power supply rejection ratio Mute on Mute off MS6544 : 6dB MS6541 : 0dB Vripple = -20dBV, 100Hz 0 3.3 5 -1 57 6 0 60 1 VDD 7 1 - V V dB dB dB CS Channel separation Vo=0dBV 100 117 - dB ATT Mute attenuation Vo=0dBV 100 115 - dB IQ Quiescent current VTM Mute control voltage GVC Voltage Gain PSRR Vo=0Vpp 2 channels AC Characteristics S/N Signal-to-noise Vo=4Vpp 95 99 - dB THD+N Total harmonic distortion plus noise Vo=2Vpp - -64 -62 dB SR Slew rate Unity gain inverting - 5 - V/s Po Maximum output power (THD+N)/S<0.1, 2 ch 130 140 - mW VO Maximum output voltage swing (THD+N)/S<0.1 4.1 4.2 - Vpp Max Unit 1.4 3.5 mA mA 3.3V ELECTRICAL CHARACTERISTICS (Ta=25℃, VDD=3.3V, VSS=0V, Vo=2Vpp, f=1kHz, AV=1, RL=32; unless otherwise specified) Min Typ Conditions Symbol Parameter DC Characteristics - 1.3 3.3 Mute on 0 - 1 V Mute off 2.7 - VDD V Power supply rejection ratio Vripple = -20dBV, 100Hz 57 60 - dB CS Channel separation Vo=0dBV 100 115 - dB ATT Mute attenuation Vo=0dBV 100 115 - dB 93 97 - dB - -64 -62 dB IQ Quiescent current VTM Mute control voltage PSRR Vo=0Vpp 2 channels Mute On Mute Off AC Characteristics S/N Signal-to-noise Vo=2.6Vpp THD+N Total harmonic distortion plus noise Vo=2Vpp Po Maximum output power (THD+N/S)<0.1, 2 ch 49 52 - mW VO Maximum output voltage swing (THD+N)/S<0.1 2.5 2.6 - Vpp REV 2 3/9 www.mosanalog.com MOSA MS6544/6541 Class AB Stereo Headphone Driver with Mute 2.7V ELECTRICAL CHARACTERISTICS (Ta=25℃, VDD=2.7V, VSS=0V, Vo=2Vpp, f=1kHz, AV=1, RL=32; unless otherwise specified) Min Typ Conditions Symbol Parameter Max Unit DC Characteristics - 1.2 3.0 1.3 3.2 mA mA Mute on 0 - 1 V Mute off 2.5 - VDD V 57 60 - dB 100 112 - dB 100 115 - dB Vo=0Vpp 2 channels Mute On Mute Off IQ Quiescent current VTM Mute control voltage PSRR Power supply rejection ratio Vripple = -20dBV, 100Hz CS Channel separation Vo=-3dBV ATT Mute attenuation Vo=-3dBV AC Characteristics S/N Signal-to-noise Vo=2Vpp 92 96 - dB THD+N Total harmonic distortion plus noise Vo=2Vpp - -64 -62 dB Po Maximum output power (THD+N/S)<0.1%, 2 ch 28 31 - mW VO Maximum output voltage swing (THD+N)/S<0.1% 1.9 2 - Vpp REV 2 4/9 www.mosanalog.com MOSA MS6544/6541 Class AB Stereo Headphone Driver with Mute TYPICAL PERFORMANCE CHARACTERISTICS (Ta=25℃, RL=32; unless otherwise specified) f=1kHz f=1kHz f=20Hz f=20kHz THD+N (%) f=20kHz THD+N (%) THD+N (%) f=20kHz f=1kHz f=20Hz f=20Hz VDD=2.7V 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=3.3V VIN=0dBV VDD=2.7V VIN=-3dBV VDD=2.7V VIN=-3dBV VDD=3.3V VIN=-0dBV VDD=5V VIN=0dBV VDD=5V PSRR (dB) VDD=5V VIN=0dBV QUIESCENT CURRENT (mA) VDD=3.3V MUTE ATTENUATION (dB) CHANNEL SEPARATION (dB) VDD=5V VDD=2.7V VDD=3V VRR=-20dBV Bias C=47uF FREQUENCY (Hz) FREQUENCY (Hz) FREQUENCY (Hz) Channel separation vs. frequency Mute Attenuation vs. frequency PSRR vs. frequency Mute Off Mute On SUPPLY VOLTAGE (V) Quiescent current vs. supply voltage REV 2 5/9 www.mosanalog.com MOSA MS6544/6541 Class AB Stereo Headphone Driver with Mute MUTE FUNCTION Mute operation A A: Mute period Set Mute = Low to prevent the popping noise when power is turned on and off. A VDD B C B: Mute release time The time constant is decided by R and C of pin 2. Out C: Mute start time The time constant like Mute release time. VTM Mute function to prevent the popping noise Conditions : VDD = 5V, Vo =2Vpp VO Process : Mute On, VDD On, Mute Off Mute On, VDD Off Voltage (V) VDD VO loading Time (Sec) Conditions : VDD = 2.7V, Vo =2Vpp VDD Process : Mute On, VDD On, Mute Off Mute On, VDD Off VO VO loading REV 2 6/9 www.mosanalog.com MOSA MS6544/6541 Class AB Stereo Headphone Driver with Mute APPLICATION INFORMATION Low voltage application 10 VDD=3.3V 0.1u Headphone 1 8 6dB 100k H : Active L : Mute 100u 47u 32 VTM 1u 1u Headphone 47u 32 7 MUTE 1u 90k VINA 2 6dB 3 BIAS 90k 200p 6 90k 4 1u 90k 5 VINB 200p f-3dB = 17.6kHz DC gain = 1 Fig.1 The 1st order low pass filter for MP3 solution with MS6544. 10 VDD=3.3V 0.1u Headphone 32 1 VTM 1u 1u VINA 8 6dB (0dB) 100k H : Active L : Mute 100u 47u 2 6dB (0dB) Headphone 47u 32 7 MUTE 1u 3 BIAS 90k (180k) 6 90k (180k) 4 5 1u VINB DC gain = 2 for MS6544 DC gain = 1 for MS6541 Fig.2 REV 2 The basic application. 7/9 www.mosanalog.com MOSA MS6544/6541 Class AB Stereo Headphone Driver with Mute EXTERNAL DIMENSIONS 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 SOP8 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 L B C MSOP8 REV 2 8/9 www.mosanalog.com MOSA MS6544/6541 Class AB Stereo Headphone Driver with Mute 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 9/9 www.mosanalog.com