MS6544

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 ‧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 APPLICATIONS ‧MP3, PDA ‧Portable Digital Audio. ‧CD-ROM, DVD-ROM, CD-RW, DVD-RW ‧Cross-reference : 6dB: BH3544F, NJM2169 0dB: BH3541F, NJM2168 DESCRIPTION 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. BLOCK DIAGRAM OutA MUTE INA VSS 1 2 3 4 6dB (0dB) MUTE 6dB (0dB) 8 VDD 7 OutB BIAS 90k (180k) 90k (180k) 6 VREF 5 INB PIN CONFIGURATION Symbol OutA Mute INA VSS INB VREF OutB VDD REV 2 Pin 1 2 3 4 5 6 7 8 Description Output A Mute control (Low: mute on, High: mute off) Input A Negative supply Input B Reference volatge Output B Positive supply 1/9 www.mosanalog.com OUTA 1 MUTE 2 INA 3 VSS 4 8 VDD MS6544 MS6541 7 OUTB 6 VREF 5 INB MOSA ORDERING INFORMATION Package 8-Pin SOP 8-Pin SOP 8-Pin MSOP 8-Pin MSOP 8-Pin SOP Part number MS6544GTR MS6544GU MS6544MGTR MS6544MU MS6541GTR MS6544G MS6544G MS6544G MS6544G MS6541G MS6541G MS6544/6541 Class AB Stereo Headphone Driver with Mute Packaging Marking Transport Media 2.5k Units Tape and Reel 100 Units Tube 3.5k Units Tape and Reel 80 Units Tube 2.5k Units Tape and Reel 100 Units Tube 8-Pin SOP MS6541GU Lead free, RoHS Compliance ABSOLUTE MAXIMUM RATINGS Symbol VDD VESD TSTG TA TJ TS RTHJA Supply Voltage Electrostatic Handling Storage Temperature Range Operating Ambient Temperature Range Maximum Junction Temperature Soldering Temperature, 10 seconds Thermal Resistance from Junction to Ambient in Free Air SOP8 Parameter Rating 6.5 -4500 to 4500 -65 to 150 -40 to 85 150 260 210 Unit V V ℃ ℃ ℃ ℃ ℃/W OPERATING RATINGS Symbol VDD Supply Voltage Parameter Min 2.7 Typ Max 6.5 Unit V REV 2 2/9 www.mosanalog.com MOSA 5V ELECTRICAL CHARACTERISTICS MS6544/6541 Class AB Stereo Headphone Driver with Mute (Ta=25℃, VDD=5V, VSS=0V, Vo=2Vpp, f=1kHz, AV=1, RL=32; unless otherwise specified) Min Typ Conditions Symbol Parameter DC Characteristics IQ VTM GVC PSRR CS ATT S/N THD+N SR Max 1.6 4.1 1 VDD 7 1 -62 - Unit mA mA V V dB dB dB dB dB dB dB V/s mW Vpp Quiescent current Mute control voltage Voltage Gain Power supply rejection ratio Channel separation Mute attenuation Signal-to-noise Total harmonic distortion plus noise Slew rate Maximum output power Maximum output voltage swing Vo=0Vpp 2 channels Mute On Mute Off 3.7 0 3.3 5 -1 57 100 100 95 130 4.1 1.5 3.9 6 0 60 117 115 99 -64 5 140 4.2 Mute on Mute off MS6544 : 6dB MS6541 : 0dB Vripple = -20dBV, 100Hz Vo=0dBV Vo=0dBV Vo=4Vpp Vo=2Vpp Unity gain inverting (THD+N)/S