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MAX9775 Datasheet(PDF) 3 Page - Maxim Integrated Products |
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MAX9775 Datasheet(HTML) 3 Page - Maxim Integrated Products |
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3 / 37 page  2 x 1.5W, Stereo Class D Audio Subsystem with DirectDrive Headphone Amplifier _______________________________________________________________________________________ 3 PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS SPEAKER AMPLIFIERS TA = +25°C ±5.5 ±23.5 Output Offset Voltage VOS TMIN ≤ TA ≤ TMAX ±40 mV Into shutdown -62 Out of shutdown -60 Into mute -63 Click-and-Pop Level KCP Peak voltage, TA = +25°C, A-weighted, 32 samples per second (Notes 2, 3) Out of mute -62 dB VDD = 2.7V to 5.5V 48 70 f = 217Hz, 100mVP-P ripple 68 f = 1kHz, 100mVP-P ripple 60 Power-Supply Rejection Ratio (Note 3) PSRR TA = +25°C f = 20kHz, 100mVP-P ripple 50 dB RL = 4 Ω, VDD = 5V 1500 RL = 8 Ω, VDD = 3.3V 450 Output Power (Note 4) POUT THD+N = 1%, TA = +25°C RL = 8 Ω, VDD = 5V 1115 mW Current Limit 1.6 A RL = 8 Ω, POUT = 125mW 0.03 Total Harmonic Distortion Plus Noise (Note 4) THD+N f = 1kHz RL = 4 Ω, POUT = 250mW 0.04 % BW = 20Hz to 20kHz 81 Signal-to-Noise Ratio SNR VOUT = 1.8VRMS, RL = 8 Ω, 3D not active (Note 3) A-weighted 84 dB Fixed-frequency modulation 1100 Output Frequency fOSC Spread-spectrum modulation 1100 ±30 kHz Efficiency η POUT = 470mW, f = 1kHz both channels driven, L = 68µH in series with 8 Ω load 79 % Gain AV 12 dB Channel-to-Channel Gain Tracking (Note 5) TA = +25°C ±1 % 3D Sound Resistors (Note 5) R3D Used with 22nF and 2.2nF external capacitors 57 9 k Ω Crosstalk (Notes 4, 5) L to R, R to L, f = 10kHz, RL = 8 Ω, VOUT = 300mVRMS 73 dB ELECTRICAL CHARACTERISTICS (continued) (VDD = PVDD = CPVDD = 3.3V, GND = PGND = CPGND = 0V, SHDN = VDD, I2C settings (INA gain = +20dB, INB gain = INC gain = 0dB, volume setting = 0dB, mono path gain = 0dB, SHDN = 1, SSM = 1). Speaker load resistors (RLSP) are terminated between OUT_+ and OUT_-, headphone load resistors are terminated to GND, unless otherwise noted. C1 = C2 = C3 = 1µF. TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) |
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Similar Description - MAX9775 |
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