Part # MAX9746 datasheet

Part Manufacturer: Maxim


Part Description: MAX9746 DS

Part Details:

19-0515; Rev 0; 5/06 1.2W, Low-EMI, Filterless, Class D Audio Amplifier MAX9746 General Description Features The MAX9746 mono Class D audio power amplifier pro- Filterless Amplifier Passes FCC Radiated vides Class AB amplifier performance with Class D effi- Emissions Standards with 100mm of Cable ciency, conserving board space and extending battery Unique Spread-Spectrum Mode Offers 5dB life. The MAX9746 is designed specifically for systems Emissions Improvement Over Conventional using 1.8V logic interface. Using a Class D architecture, Methods the MAX9746 delivers 1.2W into an 8 load while offer- Optional External SYNC Input ing efficiencies near 90%. A patented, low-EMI modula-tion scheme renders the traditional Class D output filter Simple Master-Slave Setup for Stereo Operation unnecessary. 88% Efficiency The MAX9746 offers two modulation schemes: a fixed- 1.2W into 8 frequency (FFM) mode, and a spread-spectrum (SSM) Low 0.1% THD+N mode that reduces EMI-radiated emissions due to the High PSRR (72dB at 217Hz) modulation frequency. Furthermore, the MAX9746 oscil- Integrated Click-and-Pop Suppression lator can be synchronized to an external clock throughthe SYNC input, allowing the switching frequency to be 1.8V Logic-Compatible user defined. The SYNC input also allows multiple Low Quiescent Current (4mA) MAX9746s to be cascaded and frequency locked, mini- Low-Power Shutdown Mode (0.1µA) mizing interference due to clock intermodulation. The Short-Circuit and Thermal-Overload Protection device utilizes a fully differential architecture, a full- Available in Thermally Efficient, Space-Saving bridged output, and comprehensive click-and-pop sup- 12-Bump UCSP Package (1.5mm x 2mm x 0.6mm) pression. The gain of the MAX9746 is set internallyfurther reducing external component count. The MAX9746 features high 72dB PSRR, a low 0.1%THD+N, and SNR in excess of 90dB. Short-circuit and Ordering Information thermal-overload protection prevent the device fromdamage during a fault condition. The MAX9746 is avail- PART TEMP RANGE PIN-PACKAGE able in a 12-bump UCSPTM (1.5mm 2mm 0.6mm)package. The MAX9746 is specified over the extended MAX9746BEBC+T -40oC to +85oC 12 UCSP-12 -40°C to +85°C temperature range. +Denotes lead-free package.

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MAX9746.pdf Datasheet