SM7512 Datasheet | SamHop Microelectronics

DESCRIPTION The SM7512 is a stereo audio power amplifier that drives 3 W/channel of continuous RMS power into a 3-Ω load. Advanced dc volume control minimizes external ponents and allows BTL (speaker) volume control and SE (headphone) volume control. Notebook and pocket PCs benefit from the integrated feature set that minimizes external ponents without sacrificing functionality. To simplify design, the speaker volume level is adjusted by applying a dc voltage to the VOLUME terminal. FEATURES - Advanced DC Volume Control With 2-d B Steps From -40 d B to 20 d B - Maximum Volume Setting for SE Mode - Adjustable SE Volume control Referenced to BTL Volume Control - 3 W Into 3-Ω Speakers APPLICATIONS - Notebook PC - LCD Monitors - Portable DVD Player PIN ASSIGNMENTS (TOP VIEW) - Digital photo frame ROUTRPVDD RLINEIN VDD LLINEIN LPVDD LOUTLPGND 1 2 3 4 5 6 7 8 Thermal Pad 16 15 14 13 12 11 10 9 RPGND ROUT+ SE/BTL VOLUME GND BYPASS SHUTDOWN LOUT+ SM7512 16PIN Page 1 V.1.4 Revised May 28,2007 .Data Sheet.in SAMHOP Microelectronics Corp. 3W STEREO AUDIO POWER AMPLIFIER WITH ADVANCED DC VOLUME CONTROL PIN ASSIGNMENTS ROUTRPVDD RLINEIN VDD LLINEIN LPVDD LOUTLPGND 1 2 3 4 5 6 7 8 Thermal Pad 16 15 14 13 12 11 10 9 RPGND ROUT+ SE/BTL VOLUME GND BYPASS SHUTDOWN LOUT+ SM7512 16PIN PIN DESCRIPTIONS No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Pin Name ROUTRPVDD RLINEIN VDD LLINEIN LPVDD LOUTLPGND LOUT+ SHUTDOWN BYPASS GND VOLUME SE/BTL ROUT+ RPGND I/O O I I O O I I I I O - Function Right channel negative audio output Supply voltage terminal for power stage Right channel line input Supply voltage terminal Left channel line input Supply voltage terminal for power stage Left channel negative audio output Power ground Left chanel positive audio output Places the amplifier in shutdown mode if a TTL logic low is placed on this terminal Tap to voltage divider for internal midsupply bias generator used for analog reference Analog power supply ground Terminal for dc...