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MAX9770 Datasheet(PDF) 2 Page - Maxim Integrated Products |
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MAX9770 Datasheet(HTML) 2 Page - Maxim Integrated Products |
2 / 24 page 1.2W Low-EMI, Filterless, Mono Class D Amplifier with Stereo DirectDrive Headphone Amplifiers 2 _______________________________________________________________________________________ ABSOLUTE MAXIMUM RATINGS ELECTRICAL CHARACTERISTICS (VDD = PVDD = CPVDD = 3.3V, GND = PGND = CPGND = 0V, SHDN = 3.3V, C1 = C2 = 1µF, CBIAS = 0.047µF, SYNC = GND, RL = ∞, speaker load connected between OUT+ and OUT-, headphone load connected between HPOUT_ and GND, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Notes 1, 2) Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. GND to PGND to CPGND......................................-0.3V to +0.3V VDD to PVDD to CPVDD..........................................-0.3V to +0.3V VDD to GND..............................................................................6V PVDD to PGND .........................................................................6V CPVDD to CPGND ....................................................................6V CPVSS to CPGND....................................................................-6V SVSS to GND ...........................................................................-6V C1N..........................................(PVSS - 0.3V) to (CPGND + 0.3V) HPOUT_ to GND .................................................................... ±3V All other pins to GND..................................-0.3V to (VDD + 0.3V) Continuous Current Into/Out of: PVDD, PGND, OUT_ ......................................................600mA PVSS ..............................................................................260mA Duration of HPOUT_ Short Circuit to VDD, PVDD, GND, PGND ...........................................................Continuous Duration of Short Circuit between HPOUTL and HPOUTR ..........................................Continuous Duration of OUT_ Short Circuit to VDD, PVDD, GND, PGND ..10s Duration of Short Circuit Between OUT+ and OUT-...............10s Continuous Power Dissipation (TA = +70°C) 28-Pin TQFN (derate 20.8mW/°C above +70°C) .......1667mW 28-Pin TSSOP (derate 12.8mW°C above +70°C) ......1026mW Junction Temperature ......................................................+150°C Operating Temperature Range ...........................-40°C to +85°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS GENERAL Supply Voltage Range VDD Inferred from PSRR test 2.5 5.5 V Headphone mode 5.5 10 Quiescent Supply Current IDD No load Speaker mode 5.2 7.5 mA Shutdown Supply Current ISHDN SHDN = HPS = GND 0.1 10 µA Shutdown to Full Operation tON 50 ms MONO 7 10 Input Impedance RIN (Note 3) INL_, INR_ 14 20 k Ω Bias Voltage VBIAS 1.1 1.25 1.4 V Feedthrough From any unselected input to any output, f = 10kHz 70 dB SPEAKER AMPLIFIER (GAIN1 = GAIN2 = VDD, HPS = GND) Output Offset Voltage VOS ±15 ±70 mV VDD = 2.5V to 5.5V 50 70 VRIPPLE = 200mVP-P, f = 217Hz 70 VRIPPLE = 200mVP-P, f = 1kHz 68 Power-Supply Rejection Ratio PSRR (Note 4) VRIPPLE = 200mVP-P, f = 20kHz 50 dB RL = 8 Ω 550 VDD = 3.3V RL = 4 Ω 900 Output Power POUT f = 1kHz, THD+N = 1%, GAIN1 = 1, GAIN2 = 0 VDD = 5V RL = 8 Ω 1200 mW RL = 8 Ω, POUT = 300mW, f = 1kHz 0.025 Total Harmonic Distortion Plus Noise THD+N RL = 4 Ω, POUT = 300mW, f = 1kHz 0.03 % |
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