LXE1721 EVALUATION BOARD USER GUIDE LXE1721 AUDIOMAX EVALUATION KIT USER’S GUIDE LINFINITY DIVISION Copyright 2000 Rev. 0.3, 2001-10-19 Microsemi Linfinity Microelectronics Division 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 1 LXE1721 EVALUATION BOARD USER GUIDE LXE1721 Evaluation Board Quick Start Guide The LXE1721 Evaluation Board is a fully functional stereo Class-D amplifier. Connection to a single output power supply, two speakers, and an audio source is all that is required to begin evaluating the amplifier. Board Setting 1. Power and Ground Connections: The terminal JP1 is for the power supply connection. Vcc is connected to the positive polarity of the power supply or battery (+7V ~ +15V); 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 begun to evaluate the board. 2. Speaker Connections: JP5 and JP6 are the speaker outputs. JP5 is for the left channel (CH1) and JP6 is for the right channel (CH2). Connect speaker “+” and “-“ to “LOUT+/ROUT+” and “LOUT-/ROUT-“ of JP5/JP6. This evaluation board is designed for standard 4 ohm speaker loads. For different impedance speakers, the output frequency response is not optimized unless the LC filter design is modified. For speaker impedance of less than 4 ohms, care must be exercised to prevent from overdriving the amplifier system. This could result in inductor saturation if the output current is too high and further cause damage to the MOSFETs. A power supply set at 6A current limit is recommended. 3. Audio Input Connections: JP2, JP2A, RCA1 and RCA2 are the audio input connections. JP2/JP2A support differential audio inputs, and RCA1/RCA2 are for single-ended audio inputs. When audio inputs are differential, the positive audio inputs are connected to LIN+/RIN+ pin, while the negative inputs are connected to LIN-/RINpin of the JP2/JP2A terminals. J1 and J2 jumpers are left open when using differential inputs. When audio inputs are single-ended, the audio source can either be connected to terminal JP2/JP2A, or to RCA inputs RCA1/RCA2. In the single-ended configuration, jumpers J1 and J2 must be closed so that the LIN-/RIN- audio inputs are connected to Ground. 4. SLEEP/MUTE Connections: JP4 is the jumper terminal to select ON/OFF control for SLEEP and MUTE functions. To enable the amplifier, both jumpers should be set to “OFF” (SLEEP is OFF, and MUTE is OFF). 5. Pre-amp Output Connections: JP3 is the header for stereo, single-ended pre-amp outputs, “LPREOUT – GND – RPREOUT”. These outputs are provided to drive other crossover networks or to support additional power amplifiers such as for a Subwoofer speaker system. Copyright 2000 Rev. 0.3, 2001-10-19 Microsemi Linfinity Microelectronics Division 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 2 Copyright 2000 Rev. 0.3, 2001-10-19 1 2 1 Linfinity Microelectronics Division 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Microsemi R22 10k JP3 HEADER 3 ON SLEEP OFF J2 JUMPER 2 JP2A HEADER 2 RCA2 RCA JACK 1 RIN- RIN+ LIN- LIN+ R1 18pF 10k 2 4 6 C11 18pF ON MUTE OFF R23 10k R4 56.2k 1% 0.47uF R3 10k C12150pF Vcc Vcc RFBK- RFBK+ RISN NC PVDD CP PGND RN+ RP+ RP- RN- LN- LP- LP+ LN+ PGND PVDD CN VDD LISN LFBK+ LFBK- 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 R7 0.020/1W RISN PGND RISN PGND Vcc Vcc RFBK+ RFBK- C22 0.1uF/25V C21 47uF/25V PGND C20 4.7uF/25V,TANT RN+ RP+ RP- RN- LN- LP- LP+ LN+ C17 4.7uF/25V,TANT Vcc C18 +47uF/25V C19 PGND 0.1uF/25V LFBKLFBK+ as possible, directly from R6 pin LISN as possible, directly from R7 pin LX1721CDB RFAOUT REAOUT REAIN _RMUTE STATUS SLEEP RAMPOUT RIN- RIN+ LAMPOUT LIN- LIN+ V25 GND CLOCK VREF LEAIN LEAOUT _LMUTE RPWM CPWM Cn R6 0.020/1W Cn LFAOUT GND 22 21 20 19 18 17 16 15 RINLPREOUT RPREOUT 14 C6 13 C4 C5 RIN+ 0.47uF 0.47uF 12 LIN- 10 9 8 7 6 5 11 0.47uF 0.1uF/25V C10 150pF 4 3 2 1 C3 LIN+ C8 C13 100pF U1 Vcc G1 chassis_gnd Vcc R5 34.8k 1% C7 L100 FERRITE/SM R2 56.2k 1% C9 Vcc + C1 1000uF/25V C2 0.1uF/25V HEADER 3X2 GND 1 3 5 JP4 pgnd PGND Vcc Cpwm Clock JP2 HEADER 2 1 2 J1 JUMPER 2 RCA1 RCA JACK 1 1 1 2 HEADER 2 JP7 Teminal 2 Vcc 2 1 PGND JP1 LISN Q2A Si4558DY LPWM- Q2B Si4558DY Q1A Si4558DY LPWM+ Q1B Si4558DY 5.1/1W R15 5.1/1W R14 5.1/1W R13 5.1/1W R12 Q4A Si4558DY RPWM+ Q4B Si4558DY Q3A Si4558DY RPWM- Q3B Si4558DY These traces keep as short as posible. 5.1/1W R11 5.1/1W R10 5.1/1W R9 5.1/1W R8 24.3K 1% 15uH R19 L4 15uH L3 24.3K 1% R18 24.3K 1% 15uH R17 L2 15uH L1 24.3K 1% R16 RFBK- LFBK- C28 220pF LOUT- C36 0.1uF/25V chassis_gnd C35 0.1uF/25V LOUT+ Teminal 2 1 2 JP5 LINFINITY MICROELECTRONICS ROUT+ C38 0.1uF/25V Teminal 2 1 2 JP6 Date: Tuesday, June 19, 2001 Size Document Number Custom LXB1721 Sheet 1 of 1 Rev V2.2 LX1721 STEREO CLASS-D AUDIO AMPLIFIER Evaluation Board Title C34 0.47uF/50V chassis_gnd C37 0.1uF/25V ROUT- 2. PGND and GND plate is expected, they are devided by the center of LX1721 3. Red havey line means needing heavy duty trace or copper 4. Heatsink need to be solded on the PGND plate; 5. LPWM+,LPWM-,RPWM+,RPWM- MUST BE KEPT AS SHORT AS POSSIBLE. 6. Chassis GND circles the whole board on bothe top layer and bottom layer. R21 15/1W RFBK+ C33 0.68uF/50V PGND C32 0.68uF/50V C27 220pF C26 220pF C30 0.68uF/50V PGND R20 15/1W C31 0.47uF/50V LFBK+ C29 0.68uF/50V C25 220pF LXE1721 EVALUATION BOARD USER GUIDE APPLICATION SCHEMATIC FIGURE 1 - LXE1721 SCHEMATIC Page 3 LXE1721 EVALUATION BOARD USER GUIDE APPLICATION SCHEMATIC (CONTINUED) LISN JP1 R8 Vcc Vcc 2 1 PGND Vcc + C1 1000uF/25V C2 0.1uF/25V Teminal 2 PGND Q1B Si4558DY Vcc Vcc L100 FERRITE/SM Keep this trace as short as possible, directly from R6 pin R6 0.020/1W G1 chassis_gnd 5.1/1W LPWM+ LISN R9 pgnd Q1A Si4558DY 5.1/1W R10 1 2 Cpwm Clock U1 R1 HEADER 2 C7 100pF 2 3 C9 18pF R5 34.8k 1% 4 5 RCA1 RCA JACK 1 R2 56.2k 1% C10 150pF 6 7 C13 1uF/10V,TANT J1 JUMPER 2 8 9 C8 0.1uF/25V 10 C3 LIN+ JP2 HEADER 2 1 2 LIN+ 11 12 C4 C5 RIN+ 1 2 RIN+ 0.47uF LIN- LIN- 0.47uF 0.47uF 13 14 RIN- RINJP2A HEADER 2 RCA2 RCA JACK 1 15 LPREOUT RPREOUT C6 0.47uF 16 17 18 19 1 J2 JUMPER 2 Vcc Q2B Si4558DY 10k 1 1 Cn Cn JP7 LFBKLFBK+ 20 R4 56.2k 1% C12150pF 21 22 LFAOUT LFBK- CPWM LFBK+ RPWM LISN _LMUTE VDD LEAOUT CN LEAIN PVDD VREF PGND CLOCK LN+ GND LP+ V25 LP- LIN+ LN- LIN- RN- LAMPOUT RP- RIN+ RP+ RIN- RN+ RAMPOUT SLEEP PGND CP STATUS PVDD _RMUTE NC REAIN RISN REAOUT RFBK+ RFAOUT RFBK- 44 5.1/1W 43 PGND 42 LPWM- 41 40 39 38 C17 4.7uF/25V,TANT Vcc C18 +47uF/25V C19 0.1uF/25V PGND 37 LN+ 36 LP+ 35 LP- 34 LN- 33 RN- 32 RP- 31 RP+ 30 RN+ 29 R11 Q2A Si4558DY 5.1/1W These traces keep as short as posible. R12 PGND C20 4.7uF/25V,TANT Q3B Si4558DY 5.1/1W 28 C21 47uF/25V 27 26 RPWM- C22 0.1uF/25V 25 Vcc R13 24 Q3A Si4558DY 23 5.1/1W C11 18pF LX1721CDB R3 10k R14 JP3 HEADER 3 RFBK+ RFBK- Q4B Si4558DY 5.1/1W Keep this trace as short as possible, directly from R7 pin Vcc R22 10k RPWM+ Vcc R15 R23 10k R7 0.020/1W Q4A Si4558DY RISN 5.1/1W RISN JP4 ON SLEEP OFF 1 3 5 ON MUTE OFF 2 4 6 HEADER 3X2 GND GND PGND FIGURE 1A - LXE1721 SCHEMATIC (VIEW OF LX1721 SECTION) Copyright 2000 Rev. 0.3, 2001-10-19 Microsemi Linfinity Microelectronics Division 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 4 LXE1721 EVALUATION BOARD USER GUIDE APPLICATION SCHEMATIC (CONTINUED) R16 LFBK+ 24.3K 1% Q1B Si4558DY C25 220pF L1 LPWM+ LOUT+ 15uH Q1A Si4558DY C29 0.68uF/50V R20 15/1W C35 0.1uF/25V JP5 PGND 1 2 chassis_gnd Teminal 2 Q2B Si4558DY C30 0.68uF/50V C31 0.47uF/50V C36 0.1uF/25V L2 LPWM- Q2A Si4558DY LOUT- 15uH R17 LFBK24.3K 1% C26 220pF 1. Star connection is expected for PGND; 2. PGND and GND plate is expected, they are devided by the center of LX1721 3. Red havey line means needing heavy duty trace or copper 4. Heatsink need to be solded on the PGND plate; 5. LPWM+,LPWM-,RPWM+,RPWM- MUST BE KEPT AS SHORT AS POSSIBLE. 6. Chassis GND circles the whole board on bothe top layer and bottom layer. R18 RFBK24.3K 1% Q3B Si4558DY C27 220pF L3 RPWM- ROUT- 15uH Q3A Si4558DY C32 0.68uF/50V R21 15/1W C37 0.1uF/25V JP6 PGND 1 2 chassis_gnd Teminal 2 Q4B Si4558DY C33 0.68uF/50V C34 0.47uF/50V C38 0.1uF/25V L4 RPWM+ Q4A Si4558DY ROUT+ 15uH R19 RFBK+ 24.3K 1% C28 220pF LINFINITY MICROELECTRONICS Title LX1721 STEREO CLASS-D AUDIO AMPLIFIER Evaluation Board Size Document Number Custom LXB1721 Date: Tuesday, June 19, 2001 Rev V2.2 Sheet 1 of 1 FIGURE 1B - LXE1721 SCHEMATIC (VIEW OF OUTPUT SECTION) Copyright 2000 Rev. 0.3, 2001-10-19 Microsemi Linfinity Microelectronics Division 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 5 LXE1721 EVALUATION BOARD USER GUIDE BILL OF MATERIALS MISCELLANEOUS COMPONENTS Line Item Part Description Manufacturer & Part # 1 2 3 4 5 6 7 IC, Controller IC, N & P – Channel MOSFET Ferrite Bead, 1000 Ohm Printed Circuit Board Inductor, 15uH Phono Jack, 90° Nickel Plated, White Phono Jack, 90° Nickel Plated, Red LINFINITY LX1721CDB SILICONIX Si4558DY MURATA BLM41P102SGPT LINFINITY LXE1721 DC2601 ISI # RL622-150K MOUSER 161-4214 MOUSER 161-4215 8 Header, Str. .100” Center, 2Pos AMP 87220-2 TH 9 10 Header, Str. .100” Center, 3Pos Header, Double Row .100” Center, 6Pos AMP 87220-3 TH TH 11 Shorting Jumpers, Open Top, Black 12 13 14 Terminal Block 2Pos 5mm Heat Sink Low-Cost for DIP Epoxy, Thermal Conductive 3M 929950-00 AMP 531220-7 SULLINS STC02SYAN BLOCK MASTER 301-021-1000 WAKEFIELD 651B WAKEFIELD 156K Reference Designators Case QSOP 44 SO-8 1206 U1 Q1, Q2, Q3, Q4 L100 Rev. TH TH TH L1, L2, L3, L4 RCA1 RCA2 J1, J2, JP2, JP2A, JP7 JP3 Qty 1 4 1 1 4 1 1 5 JP4 1 1 TH J1, J2 2 TH SMT JP1, JP5, JP6 3 4 CAPACITORS Line Item Part Description 1 Capacitor, COG, 18pF, 50V, 5% 2 Capacitor, COG, 100pF, 50V, 5% 3 Capacitor, COG, 150pF, 50V, 5% 4 Capacitor, COG, 220pF, 100V, 5% Manufacturer & Part # Case Reference Designators Qty 0805 C9, C11 2 0805 C7 1 NOVACAP 0805N180J500NT AVX 08055C180JAT2A NOVACAP 0805N101J500NT AVX 08055C101JAT2A NOVACAP 0805N151J500NT AVX 08055C151JAT2A AVX 08055C221JAT2A AVX 08055C104MAT2A NOVACAP 0805B104M500NT SAMSUNG CL21B104MBNC KEMET T491A105K025AS KEMET T491A475M016AS AVX TAJA475M016R 0805 C10, C12 2 0805 C25, C26, C27, C28 4 0805 C2, C8, C16, C19, C22, C35, C36, C37, C38 9 3216 C13 1 3216 C17, C20 2 C3, C4, C5, C6, C31, C34 C29, C30, C32, C33 6 5 Capacitor, X7R, 100nF, 50V, 20% 6 Capacitor, Tant 1µF, 25V, 10% 7 Capacitor, Tant 4.7µF, 16V, 20% 8 Capacitor, Stacked MF 0.47µF, 50V, 5% PANASONIC ECQ-V1H474JL TH 9 10 11 Capacitor, Stacked MF 0.68µF, 50V, 5% Capacitor, Alum Elect. 47µF, 50V Capacitor, Alum Elect. 1000µF, 25V PANASONIC ECQ-V1H684JL PANASONIC ECA-1HM470I PANASONIC EEU-FC1E102 TH TH TH C18, C21 C1 4 2 1 RESISTORS Line Item Part Description 1 2 3 4 Resistor, 10K, 5%, 1/8W Resistor, 24.3K, 1%, 1/8W Resistor, 34.8K, 1%, 1/8W Resistor, 56.2K, 1%, 1/8W 5 Resistor, 5.1 Ohm, 5%, 1W 6 Resistor 15 Ohm, 5%, 1W 7 Resistor, Low Value Flat .020 Copyright 2000 Rev. 0.3, 2001-10-19 Manufacturer & Part # ASJ CR21J103T ASJ CR21F2432T ASJ CR21F3482T ASJ CR21F5622T KOA RM73B3A5R1J ROHM MCR100JZHJ5R1 KOA RM73B3A150J ROHM MCR100JZHJ150 IRC LR2010-01-R0200-F Reference Designators Case 0805 0805 0805 0805 R1, R3, R22, R23 R16, R17, R18, R19 R5 R2, R4 Qty 4 4 1 2 2512 R8, R9, R10, R11, R12, R13, R14, R15 8 2512 R20, R21 2 2512 R6, R7 2 Microsemi Linfinity Microelectronics Division 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 6 LXE1721 EVALUATION BOARD USER GUIDE BOARD LAYOUT FIGURE 2 - COMPONENTS LAYER LAYOUT FIGURE 3 - SOLDER LAYER LAYOUT L RCA IN R9 C35 C19 R1 R2 R8 L1 R16 R17 C10 L2 C9 JP2 INL+ R10 C13 INL- R11 C8 R6 Lpreout AGND R preout INRINR+ JP2A C1 R7 C11 C12 R4 R3 R13 U1 C37 R12 L3 C27 C28 R14 L4 C38 C22 R RCA IN FIGURE 4 - LXE1721 COMPONENTS PLACEMENT Copyright 2000 Rev. 0.3, 2001-10-19 Microsemi Linfinity Microelectronics Division 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 7 LXE1721 EVALUATION BOARD USER GUIDE ABSOLUTE MAXIMUM RATINGS Unless otherwise specified, the following specifications apply over the operating ambient temperature 0°C ≤ TA ≤ 70°C Parameter Symbol Supply Voltage Supply Current Quiescent Current VCC IDD IQ Test Conditions Min 7 VCC=15V VCC=15V, Output Open Max 15 6 75 Sleep, Status VCC = 15V -0.3 RPWM,CPWM, Mute VCC = 15V -0.3 LIN+, LIN-, RIN+, RIN- VIN VCC = 15V -0.3 LPREOUT, RPREOUT VPRE VCC = 15V -0.3 Clock Frequency FOSC VCC = 15V 250 Copyright 2000 Rev. 0.3, 2001-10-19 LX1721 Typ Microsemi Linfinity Microelectronics Division 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 330 VCC + 0.3 VCC + 0.3 VCC +0.3 VCC +0.3 500 Units V A mA V V V V KHz Page 8