lxe1711-100 e valuation b oard u ser g uide microsemi integrated products 11861 western avenue, garden grove, ca. 92841, 714-898-8121, fax: 714-893-2570 page 1 copyright ? 2000 rev. 0.3, 2002-01-25 lxe1711-100 audiomax evaluation kit user?s guide integrated products
lxe1711-100 e valuation b oard u ser g uide microsemi integrated products 11861 western avenue, garden grove, ca. 92841, 714-898-8121, fax: 714-893-2570 page 2 copyright ? 2000 rev. 0.3, 2002-01-25 lxe1711-100 evaluation bo ard quick start guide the lxe1711-100 evaluation board is a fully functional mono class-d amplifier. connection to a single power supply, one speaker, and an audio source is all that is required to begin evaluating the amplifie r. the amplifier will support continuous output power levels up to >110w into 2 ohm load (<1% thd+n). board setting 1. power and ground connections: the terminal tb1 is for the power supply connection. vcc is connected to the positive polarity of the power supply or battery (+7v ~ +25v ); the gnd is connected to the negative polarity of the power supply or battery. please make sure your power supply polarity connection and supply voltage is correct before you start to evaluate the board. 2. speaker connection: tb2 is speaker output. connect speake r ?+? and ?-? to ?out+? and ?out-? of tb2. this evaluation board is designed for standard 4 ohm speaker lo ads. for different impedance speakers, the output filter values should be modified to optimize the output frequ ency response. please see audiomax design resource (an-16) for lc filter values. 3. audio input connections: p1 and j1 are the audio input connections. p1 supports differential audio inputs, and j1 is for the single-ended audio inputs. when audio inputs are differential, the positive audio inputs are connected to in+ pin, while the negative input is connected to in- pin of the p1 terminal. p2 jumper is left open when using differential input. when audio inputs are single-ended, the inputs audio source can either be connected to terminal p1, or to j1. in this single-ended connection, jumpers p2 must be closed so that the in- is connected to ground. 4. sleep/mute connections: p3 is the jumper selection for on/off of the mute function, and p4 is the jumper for on/off of the sleep function. to enable the amplifier, both jumpers should be set to ?off? (sleep is off, default is left open, and mute is off). audio performance 1. 20hz-20khz audio bandwidth, less than 1db; 2. thd+n <0.06% typical (1wrms, 1khz, 4 ohms); 3. maximum efficiency 85%-90%; 4. output power: 60w @4ohm, <1%thd+n; 80w @4ohm, 10%thd+n 110w @2ohm, <1%thd+n; 150w@2ohm, 10%thd+n; 5. psrr: 70db typical ; 6. differential input to minimize noise effects;
lxe1711-100 e valuation b oard u ser g uide microsemi integrated products 11861 western avenue, garden grove, ca. 92841, 714-898-8121, fax: 714-893-2570 page 3 copyright ? 2000 rev. 0.3, 2002-01-25 application schematic c8 0.47uf 50v vcc_hi_current c4 1.0uf 35v evaluation board c15 220pf p4 42375-3 on mute off 1 2 3 r5 1.00k c5 1.0uf 35v p5 42375-2 out in 1 2 u1 lx1711 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 vref gnd n/c 2.5ref rpwm cpwm af_in+ af_in- af_out sleep mute status ea_in ea_out fa_out fbk+ fbk- cn pgnd p- n- n+ p+ pvdd vdd cp isn clock_out r2 56.2k r8 10.0k pos_hi_drive l1 1.0uh pos_lo_drive revisions ltr description date common ground point p3 42375-3 off sleep on 1 2 3 r1 0.010 2w r4 1.00k r3 49.9k c13 18pf fdbk - j1 1 2 p1 42375-2 in + in - 1 2 c6 1.0uf 35v r7 56.2k fdbk + 06/13/01 tb1 301-021-1000 vcc in gnd 1 2 neg_lo_drive c14 220pf orig. ecn #180 released to engineering lxevb1711 - 100 schematic, lx1711 100 watt audio amp l thursday, june 21, 2001 b es280 6 1 title size drawing no: date: sheet of linfinity microelectronic s drawn by checked by approved by approved by model no.: + c1 220uf 35v r6 24.3k c7 100pf c9 3300pf x1 r9 24.3k p2 42375-2 in - gnd 1 2 c12 150pf sync audio in neg_hi_drive c3 1.0uf 35v c10 0.47uf 50v + c2 220uf 35v +5v_reg c11 1.0uf 35v f igure 1 - lxe1711-100 s chematic (p age 1)
lxe1711-100 e valuation b oard u ser g uide microsemi integrated products 11861 western avenue, garden grove, ca. 92841, 714-898-8121, fax: 714-893-2570 page 4 copyright ? 2000 rev. 0.3, 2002-01-25 application schematic c25 1.0uf 50v c16 0.10uf vr1 1pmt4104 r13 10.0 q9 bss138 r35 5.6 1w pos_out_unfiltered r14 1.00k r34 6.8 r11 1.00k q4 bss138 c17 1.0uf r15 10.0 vcc_hi_current q2 nds0605 q7 nds0605 r33 20.0 r19 49.9 q5 bss138 q1 nds0605 r20 10.0 orig. ecn #180 released to engineering pos_hi_drive r16 270 1 w lxevb1711 schematic, lx1711 100 watt a thursday, june 21, 2001 b es28 evaluation board 2 title size drawing n date: sheet linfinity microelect r drawn by checked by approved by approved by model no.: vr2 1pmt4106 x1 q3 irf5305 q8 irlz44n c26 3300pf q10 bss138 r10 10.0 pos_lo_drive r17 10.0 revisions ltr description +5v_reg r12 49.9 c18 0.10uf q6 nds0605 r18 10.0 f igure 1 - lxe1711-100 s chematic (p age 2)
lxe1711-100 e valuation b oard u ser g uide microsemi integrated products 11861 western avenue, garden grove, ca. 92841, 714-898-8121, fax: 714-893-2570 page 5 copyright ? 2000 rev. 0.3, 2002-01-25 application schematic c27 1.0uf 50v q18 irlz44n r36 20.0 q13 irf5305 c19 0.10uf r21 10.0 q17 nds0605 lxevb1711 schematic, lx1711 10 0 thursday, june 21, 2001 b evaluation board title size date: linfinity microe l drawn by checked by approved by approved by model no.: +5v_reg r25 1.00k q20 bss138 vr3 1pmt4104 x1 vcc_hi_current r26 10.0 c21 0.10uf r30 49.9 neg_hi_drive r38 5.6 1w neg_lo_drive r27 270 1 w revisions ltr description q19 bss138 r29 10.0 vr4 1pmt4106 r37 6.8 c20 1.0uf orig. ecn #180 released to engineerin g q14 bss138 c28 3300pf neg_out_unfiltered q15 bss138 r22 1.00k r28 10.0 r24 10.0 q16 nds0605 q11 nds0605 r31 10.0 r23 49.9 q12 nds0605 f igure 1 - lxe1711-100 s chematic (p age 3)
lxe1711-100 e valuation b oard u ser g uide microsemi integrated products 11861 western avenue, garden grove, ca. 92841, 714-898-8121, fax: 714-893-2570 page 6 copyright ? 2000 rev. 0.3, 2002-01-25 application schematic fdbk+ pos_out_unfiltered x1 neg_out_unfiltered 0 revisions ltr description d lxevb1711 schematic, lx1711 100 watt a u thursday, june 21, 2001 b es280 6 evaluation board 4 title size drawing n o date: sheet linfinity microelectr o drawn by checked by approved by approved by model no.: c22 1.0uf 50v fdbk- c23 1.0uf 50v orig. ecn #180 released to engineering tb2 301-021-1000 out+ out- 1 2 r32 15 1w l2 10.5uh l3 10.5uh c24 0.47uf 50v f igure 1 - lxe1711-100 s chematic (p age 4)
lxe1711-100 e valuation b oard u ser g uide microsemi integrated products 11861 western avenue, garden grove, ca. 92841, 714-898-8121, fax: 714-893-2570 page 7 copyright ? 2000 rev. 0.3, 2002-01-25 absolute maximum ratings unless otherwise specified, the following specificati ons apply over the operat ing ambient temperature 0 c t a 70 c lx1722 parameter symbol test conditions min typ max units supply voltage vcc 7 25 v supply current idd vcc=25v 8 a quiescent current iq vcc=25v, output open 200 ma sleep, status vcc = 25v -0.3 vcc + 0.3 v rpwm,cpwm, mute vcc = 25v -0.3 vcc + 0.3 v lin+, lin-, rin+, rin- vin vcc = 25v -0.3 vcc +0.3 v lpreout, rpreout vpre vcc = 25v -0.3 vcc +0.3 v clock frequency fosc vcc = 25v 250 330 500 khz
lxe1711-100 e valuation b oard u ser g uide microsemi integrated products 11861 western avenue, garden grove, ca. 92841, 714-898-8121, fax: 714-893-2570 page 8 copyright ? 2000 rev. 0.3, 2002-01-25 bill of materials miscellaneous components line item part description manufacturer & part # case reference designators qty 1 ic, lx1711 class d audio power amplifier m icrosemi lx1711cdb u1 1 2 inductor, 1.0uh smd power inductor l1 1 2 inductor, 10.5uh smd high current power inductor l2, l3 2 4 transistor, fet, nds0605 sot23 general purpose p channel q1, q2, q6, q7, q11, q12, q16, q17 8 5 transistor, fet, irf5305 to220 power p channel q3, q13 2 6 transistor, fet, bss138 sot23 general purpose n channel q4, q5, q9, q10, q14, q15, q19, q20 8 7 transistor, fet, irlz44n to220 power n channel q8, q18 2 8 diode, zener, 10v, 1 watt, p owermite 1pmt4104 vr1, vr3 2 9 diode, zener, 12v, 1 watt p owermite 1pmt4106 vr2, vr4 2 10 jack, pcb mount, rca phono type j1 1 11 header, 2 pin p1, p2, p5 3 12 header, 3 pin p3, p4 2 13 terminal block, 2 position tb1, tb2 2 14 heatsink, to-220 pcb mount hs1, hs2, hs3, hs4 4 capacitors line item part description manufacturer & part # case reference designators qty 1 cap: electrolytic, 220uf, 35 volt, 20%, 10 x 12.5 type thru hole c1, c2 2 2 cap: ceramic, 1.0uf, 35 volt, 20%, smd 1206 c3, c4-c6, c11, c17, c20 7 3 cap: ceramic, 100pf, 50 volt, 5%, smd 0603 c7 1 4 cap: ceramic, 0.47uf, 50 volt, 20%, smd 1206 c8, c10, c24 3 5 cap: ceramic, 3300pf, 50 volt, 10%, smd 1206 c9, c26, c28 3 6 cap: ceramic, 150pf, 50 volt, 5%, smd 0603 c12 1 7 cap: ceramic, 18pf, 50 volt, 5%, smd 0603 c13 1 8 cap: ceramic, 220pf, 50 volt, 5%, smd 0603 c14, c15 2 9 cap: ceramic, 0.10uf, 50 volt, 10%, smd 0805 c16, c18, c19, c21 4 10 cap: ceramic, 1.0uf, 50v, 20% 1210 c22, c23, c25, c27 4 resistors line item part description manufacturer & part # case reference designators qty 1 resistor, 0.01 ohms, 2 watt, 5% smd 1225 r1 1 2 resistor, 56.2k ohms, 1/10 watt, 1% smd 0603 r2, r7 2 3 resistor, 49.9k ohms, 1/10 watt, 1% smd 0603 r3 1 4 resistor, 1.00k ohms, 1/10 watt, 1% smd 0805 r4, r5, r11, r14, r22, r25 6 5 resistor, 24.3k ohms, 1/10 watt, 1% smd 0603 r6, r9 2 6 resistor, 10.0k ohms, 1/10 watt, 1% smd 0603 r8 1 7 resistor, 10.0 ohms, 1/10 watt, 1% smd 0805 r10, r13, r15, r17, r18, r20, r21, r24, r26, r28, r29, r31 12 8 resistor, 49.9 ohms, 1/10 watt, 1% smd 0805 r12, r19, r23, r30 4 9 resistor, 270 ohms, 1 watt, 5% smd 2512 r16, r27 2 10 resistor, 15 ohms, 1 watt, 5% smd 2512 r32 1 11 resistor, 20.0 ohms, 1/10 watt, 1% smd 0805 r33, r36 2 12 resistor, 6.8 ohms, 1/10 watt, 10% smd 0805 r34, r37 2 13 resistor, 5.6 ohms, 1 watt, 10% smd 2512 r35, r38 2
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