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SGM4812 132mw differential input, stereo audio power amplifier general description the SGM4812 is a stereo audio power amplifier with differential inputs. operating on a single 5v power supply, it delivers 132mw of continuous rms power per channel into a 16 ? loads with typically 0.1% thd+n. amplifier gain is externally configured by means of two resistors per input channel and does not require external compensation. the SGM4812 is designed to maximize audio performance in portable communication device applications such as mobile phone. the portable application requires audio power amplifier has minimum of external components and can operate from a single 2.7v to 5.5v power supply. the SGM4812 features an externally controlled, active-high, micro-power consumption shutdown mode. additionally, the SGM4812 features an internal thermal shutdown and short circuit protection mechanism. the SGM4812 is available in green msop-10 package. it operates over an ambient temperature range of -40 to +85 . features ? dual channel, differential inputs ? 132mw into 16 ? load from 5v power supply at thd+n = 0.1% (typical, per channel) ? 82mw into 32 ? load from 5v power supply at thd+n = 0.1% (typical, per channel) ? 2.7v to 5.5v operation ? thermal shutdown and short circuit protection ? internal pop reduction circuitry ? internal mid-rail generation ? low shutdown current: 0.36 a (typ) at 5v ? shutdown pin is compatible with 1.8v logic ? -40 to +85 operating temperature range ? available in green msop-10 package applications portable electronic systems notebook computers mobile phones pdas gps rev. a. 3 sg micro corp www.sg-micro.com
132mw differential input, SGM4812 stereo audio power amplifier 2 sg micro corp www.sg-micro.com package/ordering information model order number package description package option marking information SGM4812 SGM4812yms10/tr msop-10 tape and reel, 3000 SGM4812yms10 absolute maximum ratings supply voltage????????????.??????.6v input voltage??????????..?.. -0.3v to (v + ) + 0.3v storage temperature range??????. -65 to +150 junction temperature??????????????150 operating temperature range?????? -40 to +85 lead temperature range (soldering 10sec) ????????????????????????260 esd susceptibility hbm?????????????????????..4000v mm??????????????????????..400v note: stresses beyond those listed under ?absolute maximum ratings? may cause permanent damage to the device. these are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. caution this integrated circuit can be damaged by esd if you don?t pay attention to esd protection. sgmicro recommends that all integrated circuits be handled with appropriate precautions. failure to observe proper handling and installation procedures can cause damage. esd damage can range from subtle performance degradation to complete device failure. precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications. sgmicro reserves the right to make any change in circuit design, specification or other related things if necessary without notice at any time. please contact sgmicro sales office to get the latest datasheet. pin configuration (top view) shdn vo2 1 2 3 4 5 6 7 8 9 10 in1- bypass in2- v + in1+ gnd vo1 in2+ SGM4812yms10 msop-10
132mw differential input, SGM4812 stereo audio power amplifier 3 sg micro corp www.sg-micro.com electrical characteristics (t a = +25 , unless otherwise specified.) parameter symbol conditions min typ max units supply voltage v + 2.7 5.5 v v + = 5v 0.36 2 v + = 3.3v 0.13 2 shutdown current i sd v in = 0v, v shdn = v + v + = 2.7v 0.07 a output offset voltage v os v in = 0v -15 2 15 mv v + = 5v 1.86 2.6 v + = 3.3v 1.58 2.5 quiescent power supply current i q v in = 0v, i o = 0a v + = 2.7v 1.50 ma shutdown voltage input high v sdih 1.8 shutdown voltage input low v sdil 0.4 v v + = 3.2v to 3.4v 74 power supply rejection ratio psrr v + = 4.9v to 5.1v 70 db r l = 16 ? 132 v + = 5v r l = 32 ? 82 r l = 16 ? 46 v + = 3.3v r l = 32 ? 34 r l = 16 ? 34 v + = 3.0v r l = 32 ? 27 r l = 16 ? 22 output power (per channel) p o f = 1khz, thd+n = 0.1% v + = 2.7v r l = 32 ? 21 mw total harmonic distortion + noise thd+n p o = 60mw, v + = 5v, r l = 32 ? , f = 20hz to 20khz 0.07 % v + = 5v -55 v + = 3.3v -55 v + = 3.0v -55 f = 217hz, r l = 32 ? , input grounded with 10 ? , (c bypass = 0.47f) v + = 2.7v -55 v + = 5v -71 v + = 3.3v -71 v + = 3.0v -71 power supply rejection ratio psrr f = 1khz, r l = 32 ? , input grounded with 10 ? , (c bypass = 0.47f) v + = 2.7v -71 db wake-up time t wu v + = 5v, c bypass = 0.47f 1.8 s signal-to-noise ratio snr v + = 5v, r l = 32 ? , p o = 60mw, bw < 80khz -96 db crosstalk x talk v + = 5v, r l = 32 ? , p o = 60mw, f = 1khz -75 db
132mw differential input, SGM4812 stereo audio power amplifier 4 sg micro corp www.sg-micro.com typical performance characteristics small signal step response time (2 s/div) output voltage (50mv/div) v + = 3v thd+n vs. frequency 0.001 0.01 0.1 1 0.01 0.1 1 10 100 frequency (khz) thd+n (%) v + = 3v, r l = 32 ? , p 0 = 25mw thd+n vs. frequency 0.001 0.01 0.1 1 0.01 0.1 1 10 100 frequency (khz) thd+n (%) v + = 3v, r l = 16 ? , p 0 = 25mw small signal step response time (2 s/div) output voltage (50mv/div) v + = 5 v thd+n vs. frequency 0.001 0.01 0.1 1 0.01 0.1 1 10 100 frequency (khz) thd+n (%) v + = 5v, r l = 32 ? , p 0 = 60mw thd+n vs. frequency 0.001 0.01 0.1 1 0.01 0.1 1 10 100 frequency (khz) thd+n (%) v + = 5v, r l = 16 ? , p 0 = 80mw
132mw differential input, SGM4812 stereo audio power amplifier 5 sg micro corp www.sg-micro.com typical performance characteristics small signal frequency response -9 -6 -3 0 3 0.01 0.1 1 10 frequency (mhz) normalized gain (db) v + = 3v, r l = 16 ? , v in = -10dbm small signal frequency response -9 -6 -3 0 3 0.01 0.1 1 10 frequency (mhz) normalized gain (db) v + = 3v, r l = 32 ? , v in = -10dbm thd+n vs. output power per channel 0.001 0.01 0.1 1 10 0.001 0.01 0.1 output power (w) thd+n (%) v + = 3v, r l = 16 ? , f = 1khz, bw < 80khz small signal frequency response -9 -6 -3 0 3 0.01 0.1 1 10 frequency (mhz) normalized gain (db) v + = 5v, r l = 16 ? , v in = -10dbm small signal frequency response -9 -6 -3 0 3 0.01 0.1 1 10 frequency (mhz) normalized gain (db) v + = 5v, r l = 32 ? , v in = -10dbm thd+n vs. output power per channel 0.001 0.01 0.1 1 10 0.01 0.1 1 output power (w) thd+n (%) v + = 5v, r l = 16 ? , f = 1khz, bw < 80khz
132mw differential input, SGM4812 stereo audio power amplifier 6 sg micro corp www.sg-micro.com typical performance characteristics thd+n vs. output power per channel 0.001 0.01 0.1 1 10 0.01 0.1 output power (w) thd+n (%) v + = 3v, r l = 32 ? , f = 1khz, bw < 80khz power dissipation vs. output power per channel 0 0.01 0.02 0.03 0.04 0.05 0 0.02 0.04 0.06 0.08 0.1 output power (w) power dissipation (w) v + = 3v r l = 16 ? f = 1khz thd+n < 1% power dissipation vs. output power per channel 0 0.005 0.01 0.015 0.02 0 0.01 0.02 0.03 0.04 output power (w) power dissipation (w) v + = 3v r l = 32 ? f = 1khz thd+n < 1% thd+n vs. output power per channel 0.001 0.01 0.1 1 10 0.01 0.1 1 output power (w) thd+n (%) v + = 5v, r l = 32 ? , f = 1khz, bw < 80khz power dissipation vs. output power per channel 0 0.02 0.04 0.06 0.08 0.1 0 0.03 0.06 0.09 0.12 0.15 0.18 output power (w) power dissipation (w) v + = 5v r l = 16 ? f = 1khz thd+n < 1% power dissipation vs. output power per channel 0.01 0.02 0.03 0.04 0.05 0.06 0 0.02 0.04 0.06 0.08 0.1 output power (w) power dissipation (w) v + = 5v r l = 32 ? f = 1khz thd+n < 1%
132mw differential input, SGM4812 stereo audio power amplifier 7 sg micro corp www.sg-micro.com typical performance characteristics output power vs. supply voltage 0 0.02 0.04 0.06 0.08 0.1 0.12 0.14 0.16 23456 supply voltage (v) output power (w) thd+n 0.1% thd+n 1% thd+n 10% rl = 32 ? f = 1khz bw < 80khz wake-up time vs. bypass capacitance 0 0.5 1 1.5 2 2.5 3 0 0.2 0.4 0.6 0.8 1 1.2 bypass capacitance (f) wake-up time (s) v + = 5v r l = 16 ? c o = 220f output power vs. supply voltage 0 0.05 0.1 0.15 0.2 0.25 23456 supply voltage (v) output power (w) thd+n 0.1% thd+n 1% thd+n 10% rl = 16 ? f = 1khz bw < 80khz
132mw differential input, SGM4812 stereo audio power amplifier 8 sg micro corp www.sg-micro.com typical application bias control _ + + _ in1- in1+ bypass in2+ in2- shdn vo1 vo2 r i 20k c i 0.39 f v + /2 v + c o 220 f _ _ + + right in (differential) left in (differential) c bypass 0.47 f gnd c i 0.39 f c i 0.39 f c i 0.39 f r i 20k r i 20k r i 20k r f 20k r f 20k r f 20k r f 20k c o 220 f c s 1 f 10k to external power supply or control i/o note: 1. a 10k ? resistor must be serially connected to shdn pin.
132mw differential input, SGM4812 stereo audio power amplifier 9 sg micro corp www.sg-micro.com package outline dimensions msop-10 b e1 e e d a1 l c a a2 4.8 0.5 0.3 1.02 recommended land pattern (unit: mm) dimensions in millimeters dimensions in inches symbol min max min max a 0.820 1.100 0.032 0.043 a1 0.020 0.150 0.001 0.006 a2 0.750 0.950 0.030 0.037 b 0.180 0.280 0.007 0.011 c 0.090 0.230 0.004 0.009 d 2.900 3.100 0.114 0.122 e 2.900 3.100 0.114 0.122 e1 4.750 5.050 0.187 0.199 e 0.500 bsc 0.020 bsc l 0.400 0.800 0.016 0.031 0 6 0 6
132mw differential input, SGM4812 stereo audio power amplifier 10 sg micro corp www.sg-micro.com tape and reel information note: the picture is only for reference. please make the object as the standard. key parameter list of tape and reel package type reel diameter reel width w1 (mm) a0 (mm) b0 (mm) k0 (mm) p0 (mm) p1 (mm) p2 (mm) w (mm) pin1 quadrant msop-10 13 12.4 5.2 3.3 1.2 4.0 8.0 2.0 12.0 q1 reel width (w1) reel diameter reel dimensions tape dimensions direction of feed p2 p0 w p1 a0 k0 b0 q1 q2 q4 q3 q3 q4 q2 q1 q3 q4 q2 q1
132mw differential input, SGM4812 stereo audio power amplifier 11 sg micro corp www.sg-micro.com carton box dimensions note: the picture is only for reference. please make the object as the standard. key parameter list of carton box reel type length (mm) width (mm) height (mm) pizza/carton 13 386 280 370 5

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