MAX9888EVKIT+ Analog Devices

MAX9888 19-5235 Rev 1 2/11 Stereo Audio CODEC with FlexSound Technology General Description Features S 100dB DR Stereo DAC (8kHz < f < 96kHz) S The MAX9888 is a full-featured audio CODEC whose high performance and low power consumption make it S 91dB DR Stereo ADC (8kHz < f < 96kHz) S ideal for portable applications. S Stereo Low EMI Class D Amplifiers 950mW/Channel (8I, V = 4.2V) SPKVDD Class D speaker amplifiers provide efficient amplification S Stereo DirectDrive Headphone Amplifiers for two speakers. Low radiated emissions enable com- S Differential Receiver Amplifier pletely filterless operation. Integrated bypass switches optionally connect an external amplifier to the transducer S 2 Stereo Single-Ended/Mono Differential Line Inputs when the Class D amplifiers are disabled. S 3 Differential Microphone Inputs DirectDrive headphone amplifiers provide a true S FlexSound Technology ground-referenced output, eliminating the need for 5-Band Parametric EQ large DC-blocking capacitors. 1.8V headphone opera- Automatic Level Control (ALC) tion ensures low power consumption. The device also Excursion Limiter includes a differential receiver amplifier. Speaker Power Limiter Speaker Distortion Limiter Three differential analog microphone inputs are available Microphone Automatic Gain Control as well as support for two PDM digital microphones. and Noise Gate Integrated switches allow microphone signals to be 2 S Dual I S/PCM/TDM Digital Audio Interfaces routed out to external devices. Two flexible single-ended S Asynchronous Digital Mixing or differential line inputs may be connected to an FM S Supports Master Clock Frequencies from 10MHz radio or other sources. to 60MHz Integrated FlexSoundK technology improves loud- S RF Immune Analog Inputs and Outputs speaker performance by optimizing the signal level and S Extensive Click-and-Pop Reduction Circuitry frequency response while limiting the maximum distor- 2 S I C Control Interface tion and power at the output to prevent speaker damage. S 63 WLP Package (3.80mm x 3.30mm, 0.4mm Pitch) 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. Ordering Information The device is fully specified over the -40NC to +85NC PART TEMP RANGE PIN-PACKAGE extended temperature range. MAX9888EWY+ 63 WLP -40NC to +85NC DirectDrive is a registered trademark and FlexSound is a +Denotes lead(Pb)-free/RoHS-compliant package. trademark of Maxim Integrated Products, Inc. Simplified Block Diagram I2C I2S/PCM I2S/PCM RECEIVER AMP DIGITAL DIGITAL CONTROL AUDIO AUDIO INTERFACE INTERFACE DIGITAL MICROPHONE SPEAKER AMP INPUT FlexSound TECHNOLOGY 5-BAND PARAMETRIC EQ AUTOMATIC LEVEL CONTROL ADC DAC LOUDSPEAKER PROCESSING SPEAKER AMP MIX EXCURSION LIMITER THD LIMITER MIX POWER LIMITER LINEIN A1 MICROPHONE PROCESSING AUTOMATIC GAIN CONTROL HEADPHONE AMP NOISE GATE ADC DAC ASYNCHRONOUS DIGITAL MIXING LINEIN A2 + LINEIN B1 MAX9888 HEADPHONE AMP LINEIN B2 + Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.Stereo Audio CODEC with FlexSound Technology TABLE OF CONTENTS General Description 1 Features . 1 Simplified Block Diagram 1 Ordering Information . 1 Functional Diagram 5 Absolute Maximum Ratings 6 Electrical Characteristics 6 Digital Input/Output Characteristics . 19 Input Clock Characteristics . 21 Audio Interface Timing Characteristics 22 Digital Microphone Timing Characterstics 23 2 I C Timing Characterstics 24 Power Consumption . 25 Typical Operating Characteristics 28 Microphone to ADC 28 Line to ADC 32 Digital Loopback 33 Analog Loopback .34 DAC to Receiver 35 Line to Receiver 37 DAC to Speaker .38 Line to Speaker .42 DAC to Headphone 43 Line to Headphone 48 Speaker Bypass Switch 49 Pin Configuration . 50 Pin Description . 51 Detailed Description . 53 2 I C Slave Address .54 Registers 54 Power Management .59 Microphone Inputs 60 Line Inputs .62 ADC Input Mixers .63 Record Path Signal Processing .64 Microphone AGC .64 Noise Gate 64 2 MAX9888