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SM7511

SamHop Microelectronics
Part Number SM7511
Manufacturer SamHop Microelectronics
Description 3W STEREO AUDIO POWER AMPLIFIER
Published Nov 8, 2010
Detailed Description SAMHOP Microelectronics Corp. 3W STEREO AUDIO POWER AMPLIFIER WITH ADVANCED DC VOLUME CONTROL The information in this ...
Datasheet PDF File SM7511 PDF File

SM7511
SM7511

Overview
SAMHOP Microelectronics Corp.
3W STEREO AUDIO POWER AMPLIFIER WITH ADVANCED DC VOLUME CONTROL The information in this document is subject to change without notice.
c SAMHOP Microelectronics Corp.
All Rights Reserved.
1007 7F,No.
100,Min-Chyuan Road, Hsintien, Taipei Hsien, Taiwan, R.
O.
C.
TEL: 886-2-2218-3978/2820 FAX: 886-2-2218-3320 Email : info@samhop.
com.
tw www.
DataSheet.
in SAMHOP Microelectronics Corp.
3W STEREO AUDIO POWER AMPLIFIER WITH ADVANCED DC VOLUME CONTROL GENERAL DESCRIPTION The SM7511 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 components and allows BTL (speaker) volume control and SE (headphone) volume control.
Notebook and pocket PCs benefit from the integrated feature set that minimizes external components without sacrificing functionality.
To simplify design, the speaker volume level is adjusted by applying a dc voltage to the VOLUME terminal.
Likewise, the delta between speaker volume and headphone volume can be adjusted by applying a dc voltage to the SEDIFF terminal.
To avoid an unexpected high volume level through the headphones, a third terminal, SEMAX, limits the headphone volume level when a dc voltage is applied.
Finally, to ensure a smooth transition between active and shutdown modes, a fade mode ramps the volume up and down.
FEATURES * Advanced DC Volume Control With 2-dB Steps From -40 dB to 20 dB - Fade Mode - Maximum Volume Setting for SE Mode - Adjustable SE Volume control Referenced to BTL Volume Control * 3 W Into 3 -Ω Speakers * Stereo Input MUX * Differential Inputs APPLICATIONS PIN ASSIGNMENTS (TOP VIEW) * Notebook PC * LCD Monitors * Pocket PC * Portable DVD * Mini speaker PGND ROUTPVDD RHPIN RLINEIN RIN VDD LIN LLINEIN LHPIN PVDD LOUT1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 ROUT+ SE/BTL HP/LINE VOLUME SEDIFF SEMAX AGND BYPASS FADE SHUTDOWN LOUT+ PGND Thermal Pad SM7511 24PIN Page 1 V.
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