Part # MAX9725 datasheet

Part Manufacturer: Maxim

Maxim

Part Description: MAX9725 DS


Part Details:

19-3465; Rev 2; 11/07 EVALUATION KIT AVAILABLE 1V, Low-Power, DirectDrive, Stereo Headphone Amplifier with Shutdown MAX9725 General Description Features The MAX9725A­MAX9725D fixed-gain, stereo head- Low Quiescent Current: phone amplifiers are ideal for portable equipment where 2.1mA (MAX9725A­MAX9725D) 2.3mA (MAX9725E) board space is at a premium. The MAX9725E offers the Single-Cell, 0.9V to 1.8V Single-Supply Operation flexibility to adjust the gain with external input and feed-back resistors. The MAX9725A­MAX9725E use a unique, Fixed Gain Eliminates External Feedback Network MAX9725A: -2V/V patented DirectDriveTM architecture to produce a ground- MAX9725B: -1.5V/V referenced output from a single supply, eliminating the MAX9725C: -1V/V need for large DC-blocking capacitors, saving cost, MAX9725D: -4V/V board space, and component height. Fixed gains of Adjustable Gain with External Input and Feedback -2V/V (MAX9725A), -1.5V/V (MAX9725B), -1V/V Resistors (MAX9725C), and -4V/V (MAX9725D) further reduce MAX9725E: Minimum Stable Gain of -1V/V external component count. The adjustable gain of the Ground-Referenced Outputs Eliminate DC Bias MAX9725E DirectDrive headphone amplifier allows for No Degradation of Low-Frequency Response Due any gain down to -1V/V using external resistors. to Output Capacitors The MAX9725 delivers up to 20mW per channel into a 20mW per Channel into 32 32 load and achieves 0.006% THD+N. An 80dB at 1kHz Low 0.006% THD+N power-supply rejection ratio (PSRR) allows the MAX9725 High PSRR (80dB at 1kHz) to operate from noisy digital supplies without an additional Integrated Click-and-Pop Suppression linear regulator. The MAX9725 includes ±8kV ESD protec- Low-Power Shutdown Control tion on the headphone output. Comprehensive click-and- Short-Circuit Protection pop circuitry suppresses audible clicks and pops at ±8kV ESD-Protected Amplifier Outputs startup and shutdown. A low-power shutdown modereduces supply current to 0.6µA (typ). Available in Space-Saving Packages 12-Bump UCSP (1.54mm x 2.02mm x 0.6mm) The MAX9725 operates from a single 0.9V to 1.8V supply, 12-Pin Thin QFN (4mm x 4mm x 0.8mm)


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MAX9725.pdf Datasheet