SGM4809 dual 158mw headphone amplifier with active low shutdown mode general description the SGM4809 is a dual audio power amplifier capable of delivering 158mw per channel of continuous average power with typically 0.1% distortion (thd+n) when it drives a 16 ? speaker from a 5.0v power supply. it is designed to maximize audio performance in portable applications such as mobile phone. the portable application requires audio power amplifier has minimum of external components and can operate from a single 2.5v to 5.5v power supply. SGM4809 features an externally controlled, active-low, micro-power consumption shutdown mode, as well as an internal thermal shutdown protection mechanism. SGM4809 does not require bootstrap capacitors or snubber networks. it is optimally suited for low power portable systems. for maximum flexibility, the SGM4809 provides an externally controlled gain (with resistors), as well as an externally controlled turn-on time (with the bypass capacitor). the SGM4809 is available in green msop-8 package. it operates over an ambient temperature range of -40 to +85 . features ? active-low shutdown mode ? 158mw into 16 ? load from 5v power supply at thd+n = 0.1% (typical, per channel) ? 87mw into 32 ? load from 5v power supply at thd+n = 0.1% (typical, per channel) ? unity gain stable ? shutdown current: 0.6 a (typ) ? 2.5v to 5.5v operation ? shutdown pin is compatible with 1.8v logic ? pop/click reduction circuitry ? -40 to +85 operating temperature range ? available in green msop-8 package applications portable systems headphone amplifier microphone preamplifier notebook computers mobile phone pdas gps rev. a. 2 sg micro corp www.sg-micro.com
dual 158mw headphone amplifier SGM4809 with active low shutdown mode 2 sg micro corp www.sg-micro.com package/ordering information model order number package description package option marking information SGM4809 SGM4809yms/tr msop-8 tape and reel, 3000 SGM4809yms 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 s pecifications is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. pin configuration (top view) SGM4809yms 1 2 3 4 5 6 7 8 msop-8 shdn bypass v in2 v in1 v o1 v o2 v + gnd 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.
dual 158mw headphone amplifier SGM4809 with active low shutdown mode 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 + 2.5 5.5 v v in = 0v, v shdn = gnd, v + = 5.0v 0.6 4 v in = 0v, v shdn = gnd, v + = 3.3v 0.18 shutdown current i sd v in = 0v, v shdn = gnd, v + = 2.6v 0.1 a v in = 0v, v shdn = v + = 5.0v -50 5.3 50 v in = 0v, v shdn = v + = 3.3v -50 4.7 50 output offset voltage v os v in = 0v, v shdn = v + = 2.6v -50 4.4 50 mv v + = 5.0v, no load 1.83 2.8 v + = 3.3v, no load 1.72 quiescent power supply current i q v in = 0v, v shdn = v + v + = 2.6v, no load 1.65 ma shutdown voltage input high v sdih 1.8 v shutdown voltage input low v sdil 0.4 v r l = 16 ? 158 v + = 5.0v r l = 32 ? 87 r l = 16 ? 84 v + = 3.6v r l = 32 ? 47 r l = 16 ? 58 v + = 3.0v r l = 32 ? 33 r l = 16 ? 42 output power (per channel) p o f = 1khz, thd+n = 0.1% v + = 2.6v r l = 32 ? 25 mw total harmonic distortion + noise thd+n p o = 78mw, v + = 5.0v, r l = 32 ? , f = 20hz to 20khz 0.3 % crosstalk x talk r l = 32 ? , p o = 70mw, v + = 5v, f = 1khz -100 db v + = 5.0v -62 v + = 3.6v -62 v + = 3.0v -62 f = 217hz v + = 2.6v -62 v + = 5.0v -71 v + = 3.6v -71 v + = 3.0v -71 power supply rejection ratio psrr f = 1khz v + = 2.6v -71 db wake-up time t wu v + = 5.0v, c bypass = 0.47f, r l = 16 ? 0.53 s
dual 158mw headphone amplifier SGM4809 with active low shutdown mode 4 sg micro corp www.sg-micro.com typical performance characteristics large signal step response time (2 s/div) output voltage (500mv/div) v + = 3v large signal step response time (2 s/div) output voltage (500mv/div) v + = 5v 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 small signal step response time (0.5 s/div) output voltage (50mv/div) v + = 3v small signal step response time (1 s/div) output voltage (50mv/div) v + = 5v 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
dual 158mw headphone amplifier SGM4809 with active low shutdown mode 5 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 + = +5v, r l = 32 ? , f = 1khz, a v = -1, bw < 80khz 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, a v = -1, bw < 80khz 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 o = 80mw 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, a v = -1, bw < 80khz 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 = 16 ? , f = 1khz, a v = -1, bw < 80khz 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 o = 25mw
dual 158mw headphone amplifier SGM4809 with active low shutdown mode 6 sg micro corp www.sg-micro.com typical performance characteristics supply current vs. supply voltage 1 1.2 1.4 1.6 1.8 2 0123456 supply voltage (v) supply current (ma) v in = 0v no load dropout voltage vs. supply voltage 0 200 400 600 800 1000 1200 1400 1600 1.522.533.544.555.5 supply voltage (v) dropout voltage (mv) 8 ? , top 8 ? , bottom 32 ? , bottom 32 ? , top
dual 158mw headphone amplifier SGM4809 with active low shutdown mode 7 sg micro corp www.sg-micro.com typical application _ + + _ 20k 20k 100f v o2 shdn r f 20k r l 32 r l 32 gnd v + c s 1 f shutdown control v ih v il v + c bypass 1.0 f bias audio input audio input 100f v o1 c 0 c 0 v in2 v in1 bypass + c i 0.47f r i 20k r f 20k c i 0.47f r i 20k + + + 10k note: 1. a 10k ? resistor must be serially connected to shdn pin.
dual 158mw headphone amplifier SGM4809 with active low shutdown mode 8 sg micro corp www.sg-micro.com package outline dimensions msop-8 e1 e e d a1 l c a a2 b recommended land pattern (unit: mm) 1.02 0.41 0.65 4.8 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 0.250 0.380 0.010 0.015 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 0.650 bsc 0.026 bsc l 0.400 0.800 0.016 0.031 0 6 0 6
dual 158mw headphone amplifier SGM4809 with active low shutdown mode 9 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-8 13 12.4 5.2 3.3 1.5 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
dual 158mw headphone amplifier SGM4809 with active low shutdown mode 10 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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