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MAX97001 Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX97001 Datasheet(HTML) 1 Page - Maxim Integrated Products |
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1 / 36 page  ________________________________________________________________ _Maxim Integrated Products_ _ 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. Audio Subsystem with Mono Class D Speaker and Class H Headphone Amplifiers 19-5130; Rev 0; 1/10 Simplified Block Diagram General Description The MAX97001 mono audio subsystem combines a mono speaker amplifier with a stereo headphone ampli- fier and an analog DPST switch. The headphone and speaker amplifiers have independent volume control and on/off control. The 4 inputs are configurable as 2 differ- ential inputs or 4 single-ended inputs. The entire subsystem is designed for maximum effi- ciency. The high-efficiency, 700mW, Class D speaker amplifier operates directly from the battery and con- sumes no more than 1FA in shutdown mode. The Class H headphone amplifier utilizes a dual-mode charge pump to maximize efficiency while outputting a ground- referenced signal that does not require output coupling capacitors. The speaker amplifier incorporates a distortion limiter to automatically reduce the volume level when excessive clipping occurs. This allows high gain for low-level sig- nals without compromising the quality of large signals. All control is performed using the 2-wire I2C interface. The MAX97001 operates over the extended -40NC to +85NC temperature range, and is available in the 2mm x 2.5mm, 20-bump, WLP package (0.5mm pitch). Applications Cell Phones Portable Multimedia Players Features S 2.7V_to_5.5V_Speaker_Supply_Voltage S 1.6V_to_2V_Headphone_Supply_Voltage S 700mW_Speaker_Output_(VPVDD_=_3.7V,_ZSPK_=_8ω +_68µH) S 37mW/Channel_Headphone_Output_(RHP_=_16I) S Low-Emission_Class_D_Amplifier S Efficient_Class_H_Headphone_Amplifier S Ground-Referenced_Headphone_Outputs S 2_Stereo_Single-Ended/Mono_Differential_Inputs S Integrated_Distortion_Limiter_(Speaker_Outputs) S Integrated_DPST_Analog_Switch S No_Clicks_and_Pops S TDMA_Noise_Free S 2mm_x_2.5mm,_20-Bump,_0.5mm_Pitch_WLP_ Package Ordering Information +Denotes a lead(Pb)-free/RoHS-compliant package. EVALUATION _KIT AVAILABLE PART TEMP_RANGE PIN-PACKAGE MAX97001EWP+ -40NC to +85NC 20 WLP STEREO/ MONO INPUT STEREO/ MONO INPUT VOLUME CLASS D AMPLIFIER CLASS H AMPLIFIER CHARGE PUMP BYPASS VOLUME POWER SUPPLY BATTERY 1.8V CONTROL I2C LIMITER MAX97001 |
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