MOSA MS6853 Mono 1.9W / Stereo 300mW Power Amplifier Mono 1.9W / Stereo 300mW Power Amplifier Low Voltage Operation, Pop Noise Free FEATURES APPLICATIONS ‧Operation range: 2.7V~5.5V ‧Shutdown Current 18uA at 5V ‧Output power, THD+N=1% BTL, RL=3Ω, 2.1W at 5V BTL, RL=4Ω, 1.9W at 5V, 0.83W at 3.3V, 500mW at 2.7V BTL, RL=8Ω, 1.2W at 5V, 0.54W at 3.3V, 350mW at 2.7V SE, RL=8Ω, 300mW at 5V, 125mW at 3.3V, 85mW at 2.7V SE, RL=32Ω, 90mW at 5V, 43mW at 3.3V, 25mW at 2.7V ‧Headphone sense ‧Unity-gain stable, pop noise free ‧Space-saving MSOP10 (enhance thermal pad), TSSOP14 ‧Desktop computer’s sound card ‧Portable audio devices ‧PDA’s ‧Handheld games ‧Communication headsets ‧Cross-reference: SSM2250, LM4853 DESCRIPTION The MS6853 is a low distortion power amplifier that can drive a set of 1.9W of continuous average power into a mono 4Ω bridged-tied load (BTL) or 2 * 90mW into stereo 32Ω single ended (SE) loads headphone. It can automatically switch between mono BTL and stereo SE modes utilizing a headphone sense pin. The BTL configuration eliminates the need for external coupling capacitors on the output in most applications. The unity gain stable MS6853’s gain is set by external gain-setting resistors. The MS6853 has good feature for portable equipment, these features include the low voltage operation, micropower consumption shutdown mode, enhance thermal pad and small package MSOP10, TSSOP14, make the MS6853 ideally suited for use in portable digital audio equipments. BLOCK DIAGRAM VDD L-IN + A1 L-OUT / BTL OUT- BYPASS + R-IN + A2 BTL OUT+ VDD A3 R-OUT Mono / Stereo Mode Switching Circuitry VDD GND REV 1.1 Click/Pop Reduction Bias HP-IN SHUTDOWN 1 www.mosanalog.com MOSA MS6853 Mono 1.9W / Stereo 300mW Power Amplifier PIN CONFIGURATION MSOP10 TSSOP14 Pin Pin 1 2 Symbol L-IN Description Left channel input SHUTDOWN 2 3 SHUTDOWN places the entire device in shutdown mode when held high. TTL compatible input. HP-IN 3 4 Headphone input detection. A logical low sets BTL mode, a logical high sets SE mode. GND 4 5 Ground R-IN 5 6 Right channel input R-OUT 6 9 Right channel output BY PASS 7 10 BYPASS is the cap to the voltage divider for internal mid-supply bias. This terminal should be connected to a 0.1-μF to 10-μF capacitor CBP. BTL OUT+ 8 11 Bridged-tied load positive output VDD L-OUT/BTL OUTnc 9 12 Supply voltage 10 13 Left channel output or bridged-tied load negative output - 1,7,8,14 No connected TSSOP14 MSOP10 L-IN 1 10 L-OUT / BTL OUT- SHUTDOWN 2 9 VDD HP-IN 3 8 BTL OUT + GND 4 7 BYPASS R-IN 5 6 R-OUT Thermal Pad nc 1 14 nc L-IN 2 13 L-OUT / BTL OUT- SHUTDOWN 3 12 VDD HP-IN 4 11 BTL OUT + GND 5 10 BYPASS R-IN 6 9 R-OUT nc 7 8 nc MS6853 MS6853 ORDERING INFORMATION Package Part number Packaging Marking Transport Media 10-Pin MSOP MS6853MTR 6853 3.5k Units Tape and Reel 10-Pin MSOP MS6853MU 6853 80 Units Tube 10-Pin MSOP (lead free) MS6853MGTR 6853G 3.5k Units Tape and Reel 10-Pin MSOP (lead free) MS6853MGU 6853G 80 Units Tube 14Pin TSSOP MS6853TTR MS6853 2.5Units Tape and Reel 14Pin TSSOP MS6853TU MS6853 98Units Tube 14Pin TSSOP (lead free) MS6853TGTR MS6853G 2.5Units Tape and Reel 14Pin TSSOP (lead free) MS6853TGU MS6853G 98Units Tube REV 1.1 2 www.mosanalog.com MOSA MS6853 Mono 1.9W / Stereo 300mW Power Amplifier ABSOLUTE MAXIMUM RATINGS Symbol Parameter Rating Unit 6 V 3500 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 MSOP10 (enhance thermal pad) TSSOP14 50 150 ℃/W OPERATING RATINGS Symbol VDD Min Typ Max Unit 2.7 5 5.5 V Min Typ Max Unit BTL Mode, VIN=0V, IO=0A - 2.4 - mA SE Mode, VIN=0V, IO=0A - 1.6 - mA Parameter Supply voltage 5V ELECTRICAL CHARACTERISTICS Ta = 25°C, VDD=5V, f=1kHz, BW<30kHz, unless otherwise specified. Symbol Parameter Conditions IQ Quiescent current ISD Shutdown current VSDH Shutdown input voltage high 2.0 - - V VSDL Shutdown input voltage low - - 0.8 V CS Channel separation SE Mode, RL=32Ω 100 110 - dB BTL Mode , RL=8Ω CBP=1uF, f=100Hz - 73 - dB SE Mode , RL=32Ω CBP =10uF, f=100Hz - 64 - dB - -73 -68 dB - 0.022 0.04 % 90 95 - dB BTL Mode, RL = 3Ω THD+N = 1% - 2.1 - W BTL Mode, RL = 4Ω THD+N = 1% - 1.9 - W BTL Mode, RL = 8Ω THD+N = 1% - 1.2 - W SE Mode, RL =8Ω THD+N = 1% - 300m - W SE Mode, RL = 32Ω THD+N = 1% - 90m - W PSRR Power supply rejection ratio SD Mode, VSD=VDD THD+N Total harmonic distortion plus noise SE mode, RL=32Ω, 60mW S/N Signal-to-noise ratio SE mode, A-weighting Po REV 1.1 Output power 3 18 uA www.mosanalog.com MOSA MS6853 Mono 1.9W / Stereo 300mW Power Amplifier 3.3 V ELECTRICAL CHARACTERISTICS Ta = 25°C, VDD=3.3V, f=1kHz, BW<30kHz, unless otherwise specified. Symbol Parameter Conditions IQ Quiescent current ISD Shutdown current CS Channel separation PSRR Power supply rejection ratio Min Typ Max Unit BTL Mode, VIN=0V, IO=0A - 2.1 - mA SE Mode, VIN=0V, IO=0A - 1.5 - mA SD Mode, VSD=VDD SE Mode, RL=32Ω - 12 - uA 100 110 - dB BTL Mode , RL=8Ω CBP=1uF, f=100Hz - 73 - dB SE Mode , RL=32Ω CBP =10uF, f=100Hz - 67 - dB - -70 -65 dB THD+N Total harmonic distortion plus noise SE mode, RL=32Ω, 25mW S/N Signal-to-noise ratio SE mode, A-weighting Po Output power 0.032 0.056 % 89 94 - dB BTL Mode, RL = 4Ω THD+N = 1% - 0.83 - W BTL Mode, RL = 8Ω THD+N = 1% - 0.54 - W SE Mode, RL =8Ω THD+N = 1% - 125m - W SE Mode, RL = 32Ω THD+N = 1% - 43m - W Min Typ Max Unit BTL Mode, VIN=0V, IO=0A - 2 - mA SE Mode, VIN=0V, IO=0A - 1.4 - mA 2.7 V ELECTRICAL CHARACTERISTICS Ta = 25°C, VDD=2.7V, f=1kHz, BW<30kHz, unless otherwise specified. Symbol Parameter Conditions IQ Quiescent current ISD Shutdown current CS Channel separation PSRR Power supply rejection ratio SD Mode, VSD=VDD SE Mode, RL=32Ω - 7.5 - uA 100 110 - dB BTL Mode , RL=8Ω CBP =1uF, f=100Hz - 73 - dB SE Mode , RL=32Ω CBP =10uF, f=100Hz - 67 - dB - -69 -64 dB 0.036 0.063 % 87 92 - dB BTL Mode, RL = 4Ω THD+N = 1% - 0.51 - W BTL Mode; RL = 8Ω THD+N = 1% - 0.35 - W SE Mode; RL = 8Ω THD+N = 1% - 85m - W SE Mode; RL = 32Ω THD+N = 1% - 25m - W THD+N Total harmonic distortion plus noise SE mode, RL=32Ω, 15mW S/N Signal-to-noise ratio SE mode, A-weighting Po REV 1.1 Output power 4 www.mosanalog.com MOSA MS6853 Mono 1.9W / Stereo 300mW Power Amplifier TYPICAL PERFORMANCE CHARACTERISTICS Ta = 25°C, BW<30kHz, unless otherwise specified. VDD=3.3V BTL mode RL=4Ω Po=0.8W Po=0.5W THD+N (%) THD+N (%) Po=1.9W VDD=2.7V BTL mode RL=4Ω THD+N (%) VDD=5V BTL mode RL=4Ω FREQUENCY (Hz) FREQUENCY (Hz) FREQUENCY (Hz) THD+N vs. frequency THD+N vs. frequency THD+N vs. frequency VDD=3.3V BTL mode RL=8Ω VDD=5V BTL mode RL=8Ω VDD=2.7V BTL mode RL=8Ω Po=0.5W Po=0.3W Po=0.34W THD+N (%) Po=1W THD+N (%) THD+N (%) Po=1.2W Po=0.25W FREQUENCY (Hz) FREQUENCY (Hz) FREQUENCY (Hz) THD+N vs. frequency THD+N vs. frequency THD+N vs. frequency VDD=3.3V SE mode RL=32Ω VDD=5V SE mode RL=32Ω VDD=2.7V SE mode RL=32Ω Po=25mW REV 1.1 Po=35mW THD+N (%) Po=60mW Po=25mW THD+N (%) THD+N (%) Po=90mW Po=15mW FREQUENCY (Hz) FREQUENCY (Hz) FREQUENCY (Hz) THD+N vs. frequency THD+N vs. frequency THD+N vs. frequency 5 www.mosanalog.com MOSA MS6853 Mono 1.9W / Stereo 300mW Power Amplifier f=20kHz f=20kHz VDD=5V BTL mode RL=4Ω THD+N (%) f=1kHz THD+N (%) THD+N (%) f=20kHz f=1kHz VDD=2.7V BTL mode RL=4Ω VDD=3.3V BTL mode RL=4Ω f=20Hz f=1kHz f=20Hz f=20Hz OUTPUT POWER (W) OUTPUT POWER (W) THD+N vs. output power THD+N vs. output power f=20kHz f=20kHz f=1kHz f=1kHz f=1kHz f=20Hz VDD=5V BTL mode RL=8Ω THD+N (%) f=20kHz THD+N (%) THD+N (%) OUTPUT POWER (W) THD+N vs. output power f=20Hz VDD=3.3V BTL mode RL=8Ω f=20Hz VDD=2.7V BTL mode RL=8Ω OUTPUT POWER (W) OUTPUT POWER (W) OUTPUT POWER (W) THD+N vs. output power THD+N vs. output power THD+N vs. output power f=20kHz f=20kHz f=1kHz f=1kHz THD+N (%) f=1kHz THD+N (%) THD+N (%) f=20kHz f=20Hz f=20Hz f=20Hz VDD=5V SE mode RL=32Ω REV 1.1 VDD=3.3V SE mode RL=32Ω VDD=2.7V SE mode RL=32Ω OUTPUT POWER (W) OUTPUT POWER (W) OUTPUT POWER (W) THD+N vs. output power THD+N vs. output power THD+N vs. output power 6 www.mosanalog.com MOSA MS6853 Mono 1.9W / Stereo 300mW Power Amplifier CBP=10uF CBP=10uF CBP=1uF VDD=5V SE mode RL=32Ω PSRR (dB) PSRR (dB) PSRR (dB) CBP=10uF CBP=1uF CBP=1uF VDD=5V SE mode RL=32Ω VDD=5V SE mode RL=32Ω FREQUENCY (Hz) FREQUENCY (Hz) FREQUENCY (Hz) PSRR vs. frequency PSRR vs. frequency PSRR vs. frequency CBP=1uF CBP=1uF VDD=5V BTL mode RL=8Ω PSRR (dB) CBP=10uF PSRR (dB) CBP=10uF PSRR (dB) CBP=10uF CBP=1uF VDD=3.3V BTL mode RL=8Ω VDD=2.7V BTL mode RL=8Ω FREQUENCY (Hz) FREQUENCY (Hz) FREQUENCY (Hz) PSRR vs. frequency PSRR vs. frequency PSRR vs. frequency BTL mode SE mode CHANNEL SEPARATION (dB) QUIESCENT CURRENT (mA) VIN=0V No load VDD=5V Po=90mW VDD=3.3V Po=40mW VDD=2.7V Po=25mW SE mode RL=32Ω SUPPLY VOLTAGE (V) FREQUENCY (Hz) Quiescent current vs. supply voltage Channel separation vs. frequency REV 1.1 7 www.mosanalog.com MOSA MS6853 Mono 1.9W / Stereo 300mW Power Amplifier APPLICATION INFORMATION Basic application example 20k RF MS6853 1uF 20k RIN VINL 1 VDD 100k 2 L-IN 100uF L-OUT/BTL OUTVDD SHUTDOWN 10 9 RL 8Ω VDD 1uF 3 4 1uF 20k 5 HP-IN BTL OUT+ GND BYPASS R-IN R-OUT 1k 8 7 Headphone Jack 1uF 100uF 6 RIN 1k VINR VDD 20k 100k RF DC Gain = -RF / RIN = -1 Fig.1 A audio amplifier application circuit. SE mode and BTL mode operation As shown in block diagram and Fig.1, in the SE mode, the MS6853 operates as a high current output dual op amp. Amplifier A1 and A3 are independent amplifiers with an externally configured gain of AV = - RF/RIN. Amplifier A2 is shut down to a high output impedance state. In BTL mode, A3 is shutdown to a high impedance state. The audio signal from the R-IN pin is directed to the inverting input of A1. As a result, the L-IN and R-IN audio signals, VINL and VINR, are summed together at the input of A1. A2 is then activated with a closed-loop gain of AV = -1 fixed by two internal resistors. The outputs of A1 and A2 are then used to drive the mono bridged-tied load. HP-IN operation The ability of the MS6853 is easily switched between mono BTL and stereo SE modes. The mode is switched by headphone control pin, HP-IN. A logic-high activates the SE mode when a set of headphone plugged into the system, on the other hand, a logical-low to HP-IN activates the BTL mode when no headphones. Thermal pad considerations The thermal pad must be connected to ground. The package with thermal pad of the MS6853 requires special attention on thermal design. The thermal pad on the bottom of the MS6853 should be soldered down to a copper pad on the circuit board. Heat can be conducted away from the thermal pad through the copper plane to ambient. If the copper plane is not on the top surface of the circuit board, 9 vias of 13 mil or smaller in diameter should be used to thermally couple the thermal pad to the bottom plane. For good thermal conduction, the vias must be plated through and solder filled. REV 1.1 8 www.mosanalog.com MOSA MS6853 Mono 1.9W / Stereo 300mW Power Amplifier EXTERNAL DIMENSIONS MSOP10 (Thermal Pad) Thermal Pad W2 E Min A A1 A2 b c D H E W1 H Dimension in mm Symbol Nom 0.81 0.05 0.76 0.15 0.13 2.90 4.70 2.90 0.92 0.86 0.20 0.15 3.00 4.90 3.00 0.50 BASIC 0.40 0.53 0o 1.27 1.02 - e L θ W1 W2 Dimension in inches Max Min 1.12 0.15 0.97 0.30 0.23 3.10 5.10 3.10 0.032 0.002 0.030 0.006 0.005 0.114 0.185 0.114 0.66 6o 1.52 1.27 Nom Max 0.036 0.044 0.006 0.034 0.038 0.008 0.012 0.006 0.009 0.118 0.122 0.193 0.201 0.118 0.122 0.02 BASIC 0.016 0.021 0.026 0o 6o 0.050 0.060 0.040 0.050 D A2 A θ e A1 L B C TSSOP14 D Dimension in mm Symbol A A1 A2 b C D E E1 E1 E e L θ Min Nom 0.05 0.80 0.19 0.09 4.90 4.3 Max 1.20 0.15 1.00 1.05 0.30 0.20 5.00 5.10 6.40 4.4 4.5 0.650 BASIC 0.45 0.60 0.75 0o 8o Dimension in inches Min Nom Max 0.047 0.002 0.006 0.031 0.039 0.041 0.007 0.012 0.0035 0.008 0.193 0.197 0.201 0.026 0.170 0.173 0.177 0.026 BASIC 0.0177 0.024 0.0295 0o 8o A2 A θ e REV 1.1 b A1 L 9 C www.mosanalog.com MOSA MS6853 Mono 1.9W / Stereo 300mW Power Amplifier TAPE AND REEL (Unit : mm) MSOP10 2.0 0.30 0.05 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 REV 1.1 10 www.mosanalog.com MOSA MS6853 Mono 1.9W / Stereo 300mW Power Amplifier DEMO BOARD MSOP10 (Thermal Pad) 1 3 2 4 5 TSSOP14 REV 1.1 11 www.mosanalog.com MOSA MS6853 Mono 1.9W / Stereo 300mW Power Amplifier Function description Label 1: Supply Input Supply voltage range is 2.7V to 5.5V, the right of jump is positive, the left of jump is negative. Label 2: Signal Input Connected to audio signals. Label 3: Speaker Output Connected to speaker with 8ohm or 4 ohm Label 4: Headphone Jack Used 3.5mm diameter of headphone with 32ohm Label 5: Shutdown Control System is active mode when jump is close, system enters shutdown mode when jump is open. SE mode and BTL mode operation The headphone controls operational mode. System enters SE mode when headphone jack is empty. When a set of headphone plugged into the jack, the system switched to BTL mode. REV 1.1 12 www.mosanalog.com