MAX9892

The MAX9892 features two low-impedance analog switches controlled by MUTE that opens and closes the switches. The switches are open during normal operation and have no impact on the output signal. During startup and shutdown of the amplifier, the MAX9892 can be activated to short the outputs to ground and prevent clicks and pops from pulling current through the headphones. The MAX9892 is an audio click-and-pop eliminator for portable multimedia devices. Operating from a 1.7V to 3.6V supply, the MAX9892 connects to the output of the existing system amplifier and provides a low-impedance path to ground during startup and shutdown. The inputs INL and INR accept voltage swings from VDD to 5.5V below VDD. The power-up and powerdown transients are shunted to ground to prevent clicks and pops from becoming audible. See the Setting the supply voltage: section for more information. The MAX9892 is specified over the -40°C to +85°C temperature range. The MAX9892 is available in 6-bump UCSP (1mm x 1.52mm x 0.6mm)and 6-pin DFN (2mm x 2mm x 0.75mm)packages.

The features of MAX9892 can be summarized as (1)distortion-free, click-and-pop elimination; (2)less than 1A supply current; (3)1.7V to 3.6V single-supply operation; (4)tiny packages 6-bump UCSP (1mm x 1.52mm x 0.6mm)/ 6-pin DFN (2mm x 2mm x 0.75mm).

The absolute maximum ratings of MAX9892 are (1)VDD, MUTE, SET to GND:-0.3V to +6V; (2)INL, INR to GND: (VDD 6V)to (VDD + 0.3V); (3)continuous current in/out of VDD: 30mA; (4)continuous current in/out of MUTE: 30mA; (5)continuous current in/out of SET: 30mA; (6)continuous current in/out of INL, INR and GND: 390mA; (7)continuous power dissipation (TA = +70°C)6-bump UCSP (derate 3.9mW/°C above +70°C): 308.3mW / 6-pin DFN (derate 4.5mW/°C above +70°C): 357.8mW; (8)operating temperature range: -40°C to +85°C; (9)junction temperature: +150°C; (10)storage temperature range: -65°C to +150°C; (11)lead temperature (soldering, 10s): +300°C; (12)bump temperature (soldering)reflow: +235°C.