Maxim 公司的MAX98089是带扬声器掩护的高性能低功耗的音频CODEC,具有101dB DR的立体声DAC(8kHz Class D speaker amplifiers provide efficient amplification for two speakers. Low radiated emissions enable com-pletely filterless operation. Integrated bypass switches optionally connect an external amplifier to the transducer when the Class D amplifiers are disabled. The IC features a stereo Class H headphone amplifier that utilizes a dual-mode charge pump to maximize effi-ciency while outputting a ground referenced signal that does not require output coupling capacitors. The IC also features a mono differential amplifier that can also be configured as a stereo line output. Integrated FlexSoundK technology improves loudspeak-er performance by optimizing the signal level and fre-quency response while limiting the maximum distortion and power at the output to prevent speaker damage. Automatic gain control (AGC) and a noise gate optimize the signal level of microphone input signals to make best use of the ADC dynamic range. The device is fully specified over the -40NC to +85NC extended temperature range. MAX98089主要特点: 5.6mW Power Comsumption (DAC to HP at 97dB DR) 101dB DR Stereo DAC (8kHz < fS < 96kHz) 93dB DR Stereo ADC (8kHz < fS < 96kHz) Stereo Low EMI Class D Amplifiers 1.7W/Channel (8I, VSPK_VDD = 5.0V) 2.9W/Channel (4I, VSPK_VDD = 5.0V) Differential Receiver Amplifier/Stereo Line Outputs 2 Stereo Single-Ended/Mono Differential Line Inputs 3 Differential Microphone Inputs FlexSound Technology 5-Band Parametric EQ Automatic Level Control (ALC) Excursion Limiter Speaker Power Limiter Speaker Distortion Limiter Microphone Automatic Gain Control and Noise Gate Dual I2S/PCM/TDM Digital Audio Interfaces Asynchronous Digital Mixing Supports Master Clock Frequencies from 10MHz to 60MHz RF Immune Analog Inputs and Outputs Extensive Click-and-Pop Reduction Circuitry Available in 63-Bump WLP Package (3.80mm x 3.30mm, 0.4mm Pitch) and 56-Pin TQFN Package (7mm x 7mm x 0.75mm)
The MAX98089 evaluation kit (EV kit) is a fully assembled and tested circuit board that evaluates the MAX98089 audio codec. The IC is an integrated audio codec includ-ing microphone amplifiers, line amplifiers, an earpiece amplifier, stereo Class D amplifiers, stereo DirectDriveM headphone amplifiers, and digital signal processing. The EV kit also includes Windows XPM-, Windows VistaM-, and WindowsM 7-compatible software that provides a simple graphical user interface (GUI) for exercising the features of the IC. The EV kit provides access to all analog and digital inputs/outputs on the IC. To enable easy connection to a wide range of audio sources, audio devices are included to convert both USB data and S/PDIF data to I2S. The EV kit integrates a MAXQ2000 microcontroller to enable I2C communication with devices on the EV kit. The EV kit software, running on a Windows PC, commu-nicates with the EV kit over a standard USB port. The EV kit software provides an intuitive interface to exercise the functions of the IC. The EV kit comes with a MAX98089EWY+ installed. MAX98089评估板主要特点: 2.8V to 5.5V Single-Supply Operation Proven Audio PCB线路板 Layout On-Board USB-to-I2C Interface Circuit On-Board USB-to-I2S Converter On-Board S/PDIF Transceiver On-Board Clock Source On-Board Digital Microphone Evaluates the MAX98089EWY+ in a 3.8mm x 3.3mm, 63-Bump WLP Package Windows XP-, Windows Vista-, and Windows 7-Compatible Software Proven PCB线路板 Layout Fully Assembled and Tested
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