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MAX97000 Datasheet(PDF) 7 Page - Maxim Integrated Products |
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MAX97000 Datasheet(HTML) 7 Page - Maxim Integrated Products |
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7 / 33 page 
Audio Subsystem with Mono Class D Speaker and Class H Headphone Amplifier 7 ELECTRICAL CHARACTERISTICS (continued) (VLDOIN = VPVDD = VSHDN = 3.7V, VGND = VPGND = 0V. Input signal applied at INA configured single-ended, preamp gain = 0dB, HPLVOL = HPRVOL= SPKVOL = 0dB, speaker loads (ZSPK) connected between OUTP and OUTN. Headphone loads (RHP) con- nected from HPL or HPR to GND. SDA and SCL pullup voltage = 1.8V. ZSPK = J, RHP = J. CC1P-C1N = CHPVDD = CHPVSS = CBIAS = 1FF. TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25NC.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS CHARGE PUMP Charge-Pump Frequency VHPL = VHPR = 0V 80 83 85 kHz VHPL = VHPR = 0.2V 665 VHPL = VHPR = 0.5V 500 Positive Output Voltage VHPVDD VHPL, VHPR > VTH 1.8 V VHPL, VHPR < VTH 0.9 Negative Output Voltage VHPVSS VHPL, VHPR > VTH -1.8 V VHPL, VHPR < VTH -0.9 Headphone Output Voltage Threshold VTH1 Output voltage at which the charge pump switches between fast and slow clock 0.1 0.16 0.21 V VTH2 Output voltage at which the charge pump switches modes, VOUT rising or falling 0.40 0.46 0.52 Mode Transition Timeouts Time it takes for the charge pump to transition from invert to split mode 32 ms Time it takes for the charge pump to transition from split to invert mode 20 F s HEADPHONE AMPLIFIERS Output Offset Voltage VOS TA = +25NC volume at mute Q 0.15 Q 0.6 mV TA = +25NC, HP_VOL = 0dB, HP_MIX = 0x1, IN_DIFF = 0 Q 0.5 Click-and-Pop Level KCP Peak voltage, TA = +25NC, A-weighted, 32 samples per second, volume at mute (Note 2) Into shutdown -74 dBV Out of shutdown -74 Power-Supply Rejection Ratio PSRR TA = +25NC (Note 2) VLDOIN = 2.5V to 5.5V 70 85 dB f = 217Hz, VRIPPLE = 200mVP-P 84 f = 1kHz, VRIPPLE = 200mVP-P 80 f = 20kHz, VRIPPLE = 200mVP-P 62 Output Power POUT THD+N = 1%, f = 1kHz RHP = 16I 40 mW RHP = 32I 23 RHP = 32I, LPMODE = 1, LP gain = 3dB 34 Channel-to-Channel Gain Tracking TA = +25NC, HPL to HPR, volume at maximum, HPLMIX = 0x01, HPRMIX = 0x02, IN_DIFF = 0 Q 0.3 Q 2.5 % |
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