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ISD8101 ISD8101 datasheet rev. 1.7 - 1 - oct, 2011 ISD8101 1.5w audio amplifier with chip enable www.datasheet.co.kr datasheet pdf - http://www..net/
ISD8101 ISD8101 datasheet rev. 1.7 - 2 - oct, 2011 1 general description the isd8100 is a general purpose analog audio amplifie r capable of driving an 8-ohm load with up to 1.5wrms output power. this device includes curr ent limiting and a chip enable pin with low standby current and excellent pop-and-click performance. also included is the ability for the inputs to be config ured as either single-ended or differential. internal resistors set the device gain at 20db. with exte rnal resistors, any gain less than 20db can be achieved. the device is unity gai n stable, including when used with external feedback resistors and external capacitors as may be optionally used for implementing simple filtering functions. 2 features ? wide power supply range and excellent standby current o 2.4vdc - 6.8vdc operation o <1ua standby current ? high output power (capless btl configuration) o up to 1.5-w output into 8-ohm load (<10% distortion) with 6.8vdc supply voltage o < 0.1% distortion at 500mw into 8-ohms with 5vdc supply voltage ? excellent pop-and-click performance o low to inaudible pop/click using chip enable ? single-ended or differential signal inputs o > 40db common mode rejection in differential mode o > 40db power supply noise rejection ? very fast start-up time o less than 1msec when using chip enable applications: ? toys ? mobile phones ? current limiting for over-current conditions ? greeting cards ? package options: pb-free sop-8, sop-8 (ex-pad), pdip-8 ? portable speakers ? boom box ? temperature range: -40c to +85c ? white goods www.datasheet.co.kr datasheet pdf - http://www..net/
ISD8101 3 block diagram figure 3-1 ISD8101 block diagram ISD8101 datasheet rev. 1.7 - 3 - oct, 2011 www.datasheet.co.kr datasheet pdf - http://www..net/
ISD8101 4 pinout configuration: 4.1 sop- 8 spn spp gnd inp inv vref ce vdd ISD8101 sop-8 s-suffix optional thermal ex-pad 2 1 3 45 6 7 8 figure 4-1 ISD8101 8-lead sop pin configuration. 4.2 pdip-8 spn spp gnd inp inv vref ce vdd ISD8101 pdip-8 1 2 3 4 8 7 6 5 figure 4-2 ISD8101 8-lead pdip pin configuration. ISD8101 datasheet rev. 1.7 - 4 - oct, 2011 www.datasheet.co.kr datasheet pdf - http://www..net/
ISD8101 ISD8101 datasheet rev. 1.7 - 5 - oct, 2011 5 pin description pin number pin name i/o function 1 spn o non-inverting speaker output 2 spp o inverting speaker output 3 gnd i ground 4 inp i non-inverting signal input 5 inv i inverting signal input 6 vref o internal reference voltage (1/2 vdd) 7 ce i chip enable 8 vdd i supply voltage 9 ex-pad i thermal tab (must be connec ted to vss, sop-8 package, only) www.datasheet.co.kr datasheet pdf - http://www..net/
ISD8101 ISD8101 datasheet rev. 1.7 - 6 - oct, 2011 6 electrical characteristics 6.1 o perating c onditions operating conditions (die) conditions values operating temperature range 1 -40c to +85c supply voltage (v dd ) +2.4v to +6.8v ground voltage (v ss ) 0v input voltage (v dd ) vss to v dd voltage applied to any pins (v ss ?0.3v) to (v dd +0.3v) operating conditions (ind ustrial packaged parts) conditions values operating temperature range (case temperature) 1 -40c to +85c supply voltage (v dd ) +2.4v to +6.8v ground voltage (v ss ) 0v input voltage (v dd ) vss to v dd voltage applied to any pins (v ss ?0.3v) to (v dd +0.3v) notes: [1] conditions v dd =3.3v, t a =25c unless otherwise stated. die temperature must at all times be kept less than 125c by appropriate thermal design of the system. 6.2 dc p arameters parameter symbol min typ [1] max units conditions supply voltage v dd 2.4 6.8 v operating current i dd 2.4 ma v dd = 5v, no load standby current i sb 0.1 1 a v dd = 5v ce input resistance 20k ? internal pull-down ce input current 120 a ce = 2.3v, v dd = 5v ce threshold enabled v enl 0.9 v all supply voltages ce threshold standby v enh 1.5 v all supply voltages vref reference voltage v dd /2 v notes: [1] conditions v dd = 3.3v, t a = 25c unless otherwise stated. die temperature must at all times be kept less than 125c by appro priate thermal design of the system. www.datasheet.co.kr datasheet pdf - http://www..net/
ISD8101 ISD8101 datasheet rev. 1.7 - 7 - oct, 2011 6.3 ac p arameters 6.3.1 analog characteristics; cref=4.7uf parameter symbol min typ max units conditions 0.3 - 5.5 v vdd = 6.8vdc 0.3 - 2.3 v vdd = 3.3vdc audio input voltage range 0.5 - 1.4 v vdd = 2.4vdc inverting input impedance 5k ? gain=20db non-inverting input impedance 60k ? gain=20db power supply rejection ratio psrr 41 db vdd = 5vdc common mode rejection ratio cmrr 40 db signal at inp = inv voltage gain 20 db rinput = zero-ohms enable time from standby 0.5 msec single-ended enable time from standby 0.5 msec differential pop-and-click from standby 1 10 mv single ended pop-and-click from standby 1 10 mv differential thermal resistance 90 c/w sop-8 (with ex-pad) thermal resistance 150 c/w sop-8 thermal resistance 117 c/w pdip-8 notes: [1] impulse voltage that is potentially audible. a fter impulse, there is a slow ramp from standby vref to operating vref, which is typically inaudible with cref = 4.7uf www.datasheet.co.kr datasheet pdf - http://www..net/
ISD8101 ISD8101 datasheet rev. 1.7 - 8 - oct, 2011 6.3.2 speaker outputs parameter symbol min typ [1] max units conditions signal-to-noise ratio snr 100 db 0db gain, 5vdc 500 mw <0.1% distortion 825 mw <1% distortion 1000 mw 5.6% distortion 1.1 watt <10% distortion output power (btl mode) load 8 ? vdd=5vdc 0db gain distortion = thd+n 1.5 watt <10% distortion and vdd = 6.8vdc load impedance r l(spk) 7.5 8 ? output offset voltage 8 mv notes: [1] conditions v dd =3.3v, t a =25c unless otherwise stated. die temperature must at all times be kept less than 125c by appropriate thermal design of the system. www.datasheet.co.kr datasheet pdf - http://www..net/
ISD8101 6.3.3 total harmonic distortion plus noise vs. output power at 6.8vdc and 5.0vdc supply voltage with 8 ? load thd+n @ vdd = 6.8vdc -80 -70 -60 -50 -40 -30 -20 -10 0 00 . 511 . 522 output power (w) thd+n (db) . 5 thd+n @ vdd = 5.0vdc -80 -70 -60 -50 -40 -30 -20 -10 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2 1.3 1.4 1.5 output power (w) thd+n (db) conditions: thd+n measurement bandwidth 22hz to 22khz at t a =25c ISD8101 datasheet rev. 1.7 - 9 - oct, 2011 www.datasheet.co.kr datasheet pdf - http://www..net/
ISD8101 6.3.4 total harmonic distortion plus noise vs. output power at 3.3vdc and 2.4vdc supply voltage with 8 ? load thd+n @ vdd = 3.3vdc -80 -70 -60 -50 -40 -30 -20 -10 0 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 output powe r (w) thd+n (db) thd+n @ vdd = 2.4vdc -80 -70 -60 -50 -40 -30 -20 -10 0 0 0.05 0.1 0.15 0.2 0.25 output power (w) thd+n (db ) conditions: thd+n measurement bandwidth 22hz to 22khz at t a =25c ISD8101 datasheet rev. 1.7 - 10 - oct, 2011 www.datasheet.co.kr datasheet pdf - http://www..net/
ISD8101 6.3.5 typical peak output power peak output vs. supply voltage @ thd = 1% 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 012345678 vdc supply voltage peak output power (watts) note: peak output power becomes reduced as device becomes heated. sustained medium duration heating typical for audio limits maximum useable output to approximately 1.5wrms at less than 10% distortion. 6.3.6 chip enable threshold voltage chip enable threshold vs. supply voltage 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 012345678 vdc supply voltage (v) threshold voltage (v) conditions: t a =25c ISD8101 datasheet rev. 1.7 - 11 - oct, 2011 www.datasheet.co.kr datasheet pdf - http://www..net/
ISD8101 6.3.7 output noise spectrum noise spectrum at vdd = 5.0vdc, gain = 0db, bw<22khz noise spectrum at vdd = 5. 0vdc, gain = 20db, bw<22khz ISD8101 datasheet rev. 1.7 - 12 - oct, 2011 www.datasheet.co.kr datasheet pdf - http://www..net/
ISD8101 7 application diagrams 7.1 s imple gain setting device=power down, if ce left as no-connect g rk k xspnsppgain outputaldifferenti + =? 5 50 2) ( by default: rg = 0? , ISD8101 differential output gain = 20 ISD8101 differential output gain (in db) = 20 x log (20) = 26db example: rg = 45k ? ISD8101 differential output gain = 2 ISD8101 differential output gain (in db) = 20 x log (2) = 6db ISD8101 datasheet rev. 1.7 - 13 - oct, 2011 www.datasheet.co.kr datasheet pdf - http://www..net/
ISD8101 7.2 s ingle -e nded a nalog i nput the following application example is for reference. it is only to give a general idea of how to use the ISD8101. each end-product design must be optimized in its own syst em for the best performance in terms of voice quality, power consumpt ion, functionality, and other issues. device=power down, if ce left as no-connect figure 8-1 ISD8101 application diagram design suggestions 1.) choose the desired gain or amplification factor : g = r3/(r1+rg) and then calculate the value for rg = r3/g - r1 and use r1=5.5k-ohm and r3=55k-ohm. 2.) choose the desired high pass frequency: fc = 1/(6.28*rin*cin) and then calculate the value for cin = 1/(6.28*rin*fc) and use rin=rg+r1 and fc = high-pass frequency in hz. cin value is farads. it is best to choose cin as small as possible. this will minimize cost and any pop/click sound. 3.) choose the value for cref. note that cref does not generate any pop/click timing and that the main use for cref is to filter any supply voltage noise. so, if the power supply noise is not a big concern, then cref can be small. typical val ues for cref can be between 0.1uf and 10uf, and a recommended value for general applications is from 1uf to 4.7uf. in general, it is best if cref is at least 3x larger in value than cin. this can help minimize the first-time power-on pop noise. after the first-time power-on, the cref value has no effect on pop/click performance. 4.) choose the value for cbulk. this value will depend on the both the physical layout (size and length of pcb traces/wires) and the power supply properties. the general suggestion for cbulk is to choose it to be 100uf. if the power supply is far away or weak, then cbulk may need to be a larger value. if the power supply is very close and has hi gh current capacity, then it may be possible to use a smaller value for cbulk. if cbulk is too small, the system ca n be unstable and may oscillate. ISD8101 datasheet rev. 1.7 - 14 - oct, 2011 www.datasheet.co.kr datasheet pdf - http://www..net/
ISD8101 7.3 d ifferential i nput for a nalog or pwm the following application example is for reference, and is only to give a general idea how to use the ISD8101. each end-product design must be optimized in its own system fo r the best performance on voice quality, power consumption, functionality, and all other issues. figure 8-2 ISD8101 application diagram design suggestions 1.) choose the desired gain or amplification factor : g = r3/(r1+rg) and then calculate the value for rg = r3/g - r1 and use r1=5.5k-ohm and r3=55k-ohm. both rg parts should be the same value. 2.) choose the desired low-pass frequency: fc = 1/(6.28*rin*cf) and then calculate the resulting value for cin = 1/(6.28*rin*fc), and use rin=2rg* r1/(rg+r1), with fc = low-pass frequency in hz and the cf value is farads. for a pwm circuit, fc should be about one-half the audio sample rate. 3.) choose the desired high pass-frequency: fc = 1/(6.28*rin*cin) and then calculate the value for cin = 1/(6.28*rin*fc) and use rin=rg+r1 and fc = high-pass frequency in hz. cin value is farads. it is best to choose cin as small as possible and bo th cin parts should be the same value. this will minimize cost and any pop/click sound. 4.) choose the value for cref. note that cref does not generate any pop/click timing and that the main use for cref is to filter any supply voltage noise. so, if the power supply noise is not a big concern, then cref can be small. typical val ues for cref can be between 0.1uf and 10uf, and a recommended value for general applications is from 1uf to 4.7uf. in general, it is best if cref is at least 3x larger in value than cin. this can help minimize the first-time power-on pop noise. after the first-time power-on, the cref value has no effect on pop/click performance. 5.) choose the value for cbulk. this value will depend on the both the physical layout (size and length of pcb traces/wires) and the power supply properties. the general suggestion for cbulk is to choose it to be 100uf. if the power supply is far away or weak, then cbulk may need to be a larger value. if the power supply is close and has high current capacity, then it may be possible to use a smaller value for cbulk. if cbulk is too small, the system can be unstable and may oscillate. ISD8101 datasheet rev. 1.7 - 15 - oct, 2011 www.datasheet.co.kr datasheet pdf - http://www..net/
ISD8101 package specification 7.4 8 l ead sop- 8 (ex-pad) detail a l e h e y 0 . 0 1 0 l y c b a a1 d e h e e detail a ISD8101 datasheet rev. 1.7 - 16 - oct, 2011 www.datasheet.co.kr datasheet pdf - http://www..net/
ISD8101 7.5 pdip-8 1.63 1.47 0.064 0.058 symbol min nom max max nom min dimension in inch dimension in mm a b c d e a l s a a 1 2 e 0.060 1.52 0.175 4.45 0.010 0.125 0.016 0.130 0.018 0.135 0.022 3.18 0.41 0.25 3.30 0.46 3.43 0.56 0.008 0.120 0.375 0.010 0.130 0.014 0.140 0.20 3.05 0.25 3.30 0.36 3.56 0.255 0.250 0.245 6.48 6.35 6.22 9.53 7.62 7.37 7.87 0.300 0.290 0.310 2.29 2.54 2.79 0.090 0.100 0.110 b 1 1 e e 1 0.360 0.380 9.14 9.65 01 5 0.045 1.14 0.355 0.335 8.51 9.02 15 0 seating plane e a 2 a c e base plane 1 a 1 e l a s 1 e d 1 b b 8 5 1 4 ISD8101 datasheet rev. 1.7 - 17 - oct, 2011 www.datasheet.co.kr datasheet pdf - http://www..net/
ISD8101 8 ordering information ISD8101 x y i ISD8101 datasheet rev. 1.7 - 18 - oct, 2011 ISD8101 s y i r delivery form r: tape and reel package form; 2500 qty per reel package type x: die r: sop-8 s: sop-8 (with thermal ex-pad) p: pdip-8 lead-free y: lead-free temperature i: industrial -40 c to 85 c blank: commercial (die) 0 c to 50 c www.datasheet.co.kr datasheet pdf - http://www..net/
ISD8101 ISD8101 datasheet rev. 1.7 - 19 - oct, 2011 9 revision history version date description 0.1 0.2 0.3 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 dec, 2009 dec. 20, 2009 jan. 15, 2010 mar. 10, 2010 mar. 16, 2010 jun. 07, 2010 jun. 28, 2010 dec 30, 2010 jan 31, 2011 jun 30, 2011 oct 20, 2011 initial draft switched names on pin 1, 2 updated specs with values from initial testing updated with full test results modified to show preliminary status added ordering option information added instructions/equations for application schematics added the simple application schematic modified the application schematics update the format update the ordering information www.datasheet.co.kr datasheet pdf - http://www..net/
ISD8101 important notice nuvoton products are neither intended nor warranted for usage in systems or equipment, any malfunction or failure of which may cause loss of human life, bodily injury or severe property damage. such applications are deemed, ?insecure usage?. insecure usage includes, but is not limited to: equipment for surgical implementation, atomic energy control instruments, airplane or spaceship instruments, the control or operation of dynamic, brake or safety systems designed for ve hicular use, traffic signal instruments, all types of safety devices, and other applications intended to support or sustain life. all insecure usage shall be made at customer?s risk, and in the event that third parties lay claims to nuvoton as a result of customer?s insecure usage, customer shall indemnify the damages and liabilities thus incurred by nuvoton. ISD8101 datasheet rev. 1.7 - 20 - oct, 2011 www.datasheet.co.kr datasheet pdf - http://www..net/

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