advanced product information power analog microelectronics, inc. PAM8101/8201 rev. 1.4 confidential. do not distribute or reproduce without permission from p.a.m. august 2005 1 description the PAM8101 is a 1.2 watt, 5-pin, single channel, class d audio amplifier. the pam8201 is a 1.2 watt per channel, 8-pin, dual channel, class d audio amplifier. the PAM8101 and pam8201 require very few external components, which leads to lower total system costs as well as less board space. these amplifiers supply 1.2 watts per channel into a 8 ? speaker at much higher efficiencies than their class a/b cousins. they also offer low thd+n (0.10%), allowing them to produce high-quality sound reproduction. the PAM8101 is available in a sot25 package, which is a tiny 2mm by 3mm. this small package, combined with the low external component count (as few as two tiny capacitors), results in significant board space savings. the pam8201 is available in a small 8-pin sop package, and requires as few as three tiny capacitors for a complete class-d solution. as with the PAM8101, this small package, combined with the low external component count, results in significant board space savings. the PAM8101 and pam8201 both run off of a 5 volt supply, making them ideal for many portable applications. PAM8101/8201 tiny 1.2 watt class-d audio amplifiers features ? 1.2 watts @ 10% thd per channel output into a 8 ? ? ? ? load at 5v ? support speakers or earphone (6 ? ? ? ? t 32 32 32 32? ? ? ?) ) ) ) . ? superior low noise without signal input. ? supply voltage: from 2.5v to 6 v. ? 85% efficiency above. ? short circuit protection. ? tiny package outlines: sot25 (PAM8101) and sop-8 (pam8201) ? less output capacitor and inductor to save the space and cost. ? low thd+n ? low quiescent current: below 10ma applications ? notebook computers ? pdas ? portable dvd players ? cellular phones/speaker phones. ? mp3 or pmp players. ? portable speakers. ? usb speaker. ? lcd monitor / tv.
advanced product information power analog microelectronics, inc. PAM8101/8201 rev. 1.4 confidential. do not distribute or reproduce without permission from p.a.m. august 2005 2 PAM8101 block diagram speaker 1bit controller over current 1uf c2 vdd c1 1uf input signal PAM8101 pin assignment vdd 1 gnd 2 in 3 4out + 5out - pam8201 block diagram 1uf c3 vdd vdd speaker 1bit controller over current c1 1uf input signal speaker 1bit controller over current c2 1uf input signal right left right left pam8201 pin assignment in l 1 _ in r 2 _ +_ out r 4 gnd 3 8outl +_ 7outl -_ 6vdd 5outr -_ thd+n vs. output power (8 ohms, 1 khz, vdd=2.5v to 6v) audio precision 06/08/05 16:01:55 0.01 100 0.02 0.05 0.1 0.2 0.5 1 2 5 10 20 50 % 1m 3 2m 5m 10m 20m 50m 100m 200m 500m 1 2 w with an 8-ohm load: vdd: 2.5v 4.0v 5.0v 6.0v output watt: 0.3w 0.8w 1.2w 1.7w efficiency vs. output power (8 ohms, 1khz, vdd = 5v) 0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0 90.0 100.0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 output power (w) efficiency (%)
advanced product information power analog microelectronics, inc. PAM8101/8201 rev. 1.4 confidential. do not distribute or reproduce without permission from p.a.m. august 2005 3 package description PAM8101 e1 e a1 l1 c a1 a2 0.70 c 0 d e e1 e b l1 l a l a2 e1 b e1 e e d note: package outline exclusive of mold flash and metal burr.
advanced product information power analog microelectronics, inc. PAM8101/8201 rev. 1.4 confidential. do not distribute or reproduce without permission from p.a.m. august 2005 4 package description pam8201 note: package outline exclusive of mold flash and metal burr.
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