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| Tr i path Technol ogy, I nc. - Technical Information EB-TK2051 CLASS-T DIGITAL AUDIO AMPLIFIER 2 CHANNEL TK2051 EVALUATION BOARD Technical Information - Board Rev. 1.3 Revision 1.0 - April 2002 GENERAL DESCRIPTION The EB-TK2051 Revision 1.3 is a stereo 50W per channel audio amplifier designed to provide a simple and straightforward environment for the evaluation of the TK2051 amplifier. For additional documentation on the TK2051, see the TK2051 Data Sheet. APPLICATIONS FEATURES 6 and 8 stereo 4 mono (parallel operation) Home Theater Receivers Multi-channel Distribution Powered DVD Systems Mini/Micro Systems BENEFITS More power per cubic inch for 50W/Channel design Simplifies thermal management Signal Quality comparable to high quality, linear amplifiers Simple building block for multi-channel design High Continuous Power: 46W @ 6 50W @ 8 * 1/8 power for 1 hour followed by full power for 5 minutes. Low Noise Floor: <135uV A-weighted Low Distortion: .005% THD+N, 20W, 6 .005% THD+N, 30W, 8 High Efficiency: 85% @ 46W, 6 89% @ 59W, 8 Over-Current Protection Over and Under Voltage Protection Over Temperature Protection 1 EB-TK2051 - KL/Rev. 1.0/04.02 Tr i path Technol ogy, I nc. - Technical Information THD+N vs. OUTPUT POWER (per channel) 10 10 THD+N vs. OUTPUT POWER (per channel) 1 f=1kHz RL=6 VCC=23.5V AES17 % 1 f=1kHz RL=8 VCC=30V AES17 Filter % 0.1 0.1 0.01 0.01 0.001 1 2 5 10 W 20 50 100 0.001 1 2 5 10 W 20 50 100 THD+N vs OUTPUT POWER (parallel operation) 10 90 EFFICIENCY vs OUTPUT POWER (parallel operation) 80 70 EFFICIENCY (%) 60 50 40 30 20 10 1 f=1kHz RL=4 VCC=30V AES17 f=1kHz RL=4 VCC=30V % 0.1 0.01 0.001 1 2 5 10 W 20 50 100 200 0 0 10 20 30 40 50 60 70 80 90 100 110 120 OUTPUT POWER (W) EFFICIENCY vs OUTPUT POWER (per channel) EFFICIENCY vs OUTPUT POWER (per channel) 90 80 70 EFFICIENCY (%) 60 50 40 30 20 10 0 0 5 10 15 20 25 30 35 40 45 50 OUTPUT POWER (W) 90 80 70 EFFICIENCY (%) f=1kHz RL=6 VCC=23.5V 60 50 40 30 20 10 0 0 5 10 15 20 25 30 35 F=1kHz RL=8 VCC=30V 40 45 50 55 60 OUTPUT POWER (W) 2 EB-TK2051 - KL/Rev. 1.0/04.02 Tr i path Technol ogy, I nc. - Technical Information OPERATING INSTRUCTIONS BOARD CONNECTION DIAGRAM VCC GND OUT 1 Heatsink TH - WAR V5 G5 + + V5 VCC Speaker 1 Speaker 2 POWER SUPPLIES Two external power supplies are required to operate the EB-TK2051: VCC (referenced to GND), and V5 (referenced to G5). The V5 ground (G5) must be kept separate from the VCC ground (GND). GND and G5 are joined at a common point on the EB-TK2051 with a 0 resistor (R1). The Minimum and Maximum VCC supply voltages are +10V and +30V, respectively. The V5 supply voltage is 5V. Please see the TK2051 Data Sheet for Minimum and Maximum values. The VCC and V5 power supply connections are standard female banana plug connectors. Please refer to the Board Connection Diagram for the connector locations on the EB-TK2051. OUTPUT The output connections for each channel of the EB-TK2051 are made with standard female banana plug connectors. The output of the TK2051 is differential; therefore each output has a positive output (OUT1+ and OUT2+) and a NEGATIVE OUTPUT (OUT1- AND OUT2-). Please refer to the Board Connection Diagram for the connector locations on the EB-TK2051. INPUT The input connection for each channel of the EB-TK2051 is made using two RCA connectors (female). The RCA connectors are labeled IN1 and IN2. These inputs share a common ground referenced to G5. Please refer to the Board Connection Diagram for the connector locations on the EB-TK2051. JUMPER SETTINGS There is a 3-pin header for the MUTE control of the TK2051. With the jumper placed in the G5 position the part is un-muted. When the jumper is placed in the V5 position the mute pin is pulled high (5V) and the amplifier is muted. Please refer to the Board Connection Diagram for the connector locations on the EBTK2051. 3 + V5 OUT 1 + HMUTE R16 + OUT 2 - MUTE G5 V5 OUT 2 + TRIPATH TECHNOLOGY TK2051 EVAL BOARD rev 1.3 * * R24 Audio Source IN1 OUT1, G5 OUT2, G5 IN2 EB-TK2051 - KL/Rev. 1.0/04.02 Tr i path Technol ogy, I nc. - Technical Information INDICATOR LED'S The EB-TK2051 has three LED's V5, HMUTE, and TH_WAR. The V5 LED will glow green when the 5V supply is on. The HMUTE LED will glow red and both outputs are muted when a fault occurs or the MUTE header is set to V5. Please refer to the TK2051 Data Sheet for a complete description of HMUTE. The TH_WAR LED glows red when the thermal limit of the TP2051 has been exceeded. Please refer to the Board Connection Diagram for the LED locations on the EB-TK2051. OUTPUT OFFSET NULL There are two potentiometers, R16 (Channel 1) and R24 (Channel 2) that are used to manually trim the output offset to 0Vdc. Please refer to the Board Connection Diagram for the potentiometer locations on the EB-TK2051. The Evaluation board is shipped with the offset nulled within +/-10mV. GAIN SETTING The gain of the EB-TK2051 Rev 1.3 is set to 15V/V. The gain of the TK2051 is the product of the TC2000 (control stage) gain and the TP2051 (power stage) gain. The control stage gain is set to unity. Before changing the gain of the EB-TK2051, please refer to the Amplifier Gain section of the EB-TK2051 Data Sheet. Performing Measurements on the EB-TK2051 Rev 1.3: The TK2051 operates by generating a high frequency switching signal based on the audio input. This signal is sent through a low-pass filter that recovers an amplified version of the audio input. The frequency of the switching pattern is spread spectrum in nature and typically varies between 100kHz and 1MHz, which is well above the 20Hz - 20kHz audio band. The pattern itself does not alter or distort the audio input signal, but it does introduce some inaudible components. The measurements of certain performance parameters, particularly noise related specifications such as THD+N, are significantly affected by the design of the low-pass filter used on the output as well as the bandwidth setting of the measurement instrument used. Unless the filter has a very sharp roll-off just beyond the audio band or the bandwidth of the measurement instrument is limited, some of the inaudible noise components introduced by the TK2051 amplifier switching pattern will degrade the measurement by including out of band (audio) energy. One feature of the TK2051 is that it does not require large multi-pole filters to achieve excellent performance in listening tests, usually a more critical factor than performance measurements. Though using a multi-pole filter may remove high-frequency noise and improve THD+N type measurements (when they are made with wide-bandwidth measuring equipment), these same filters degrade frequency response. The EB-TK2051 has a simple two-pole output filter with excellent performance in listening tests. (See Application Note 4 for additional information on bench testing) 4 EB-TK2051 - KL/Rev. 1.0/04.02 Tr i path Technol ogy, I nc. - Technical Information Contact Information TRIPATH TECHNOLOGY, INC 2560 Orchard Parkway, San Jose, CA 95131 408.750.3000 - P 408.750.3001 - F For more Sales Information, please visit us @ www.tripath.com/cont_s.htm For more Technical Information, please visit us @ www.tripath.com/data.htm 5 EB-TK2051 - KL/Rev. 1.0/04.02 1 J27 1 STANDOFF J28 1 STANDOFF J29 1 STANDOFF J30 1 STANDOFF B1 FBP1 Y1 Y1B FBN1 FBP2 Y2 Y2B FBN2 B2 OUT1A IN1A IN1B OUT1B OUT2A IN2A IN2B OUT2B TC2000 TP2051 R1 A A 0 Title Size A Date: TK2051 EVAL BOARD Document Number 1 SCOPE_GND V5 J11 1 V5 V5 V5 V5 V5 J1 J147-ND G5 J147-ND J2 C1 .1u;50V C2 .1u;50V C3 .1u;50V FDBKN1 R7 R3 14K;1% FBP1 U3 R5 8.2K R8 750 C4 .1u;50V C5 .1u;50V V5 V5 V5 R53 11K C6 100u;16V;P5529-ND V5 V5 1 R54 22K 2 GND V5 VP1 IN1 R16 5K POT MUTE BBM2 R4 500K BBM1 VP2 IN2 RCA_RT_ANG J9 C8 2.2u;10V;PCS2225CT-ND 1 R21 20K R18 500K IN1 VP1 R23 20K V5 2 For normal operation, ground J16 V5 1 2 Nets "IN1" and "IN2" must be very short. 3 J16 2 MUTE B3S C33 .1u;50V 3 REF OCD0 VLO 15 16 17 18 19 20 21 22 23 24 25 26 27 28 REF OCD1 VLO OVRLDB VHI GND V5 VP1 IN1 MUTE BBM1 BBM0 VP2 IN2 TC2000 .1u;50V C7 OCD2 NC Y2 Y2B Y1B Y1 HMUTE FDBKN1 FDBKP1 VPWR FDBKN2 DCMP FDBKP2 BIASCAP 14 13 12 11 10 9 8 7 6 5 4 3 2 1 FDBKN2 DCMP FDBKP2 V2BG R33 2K 1 Y2 Y2B Y1B Y1 HMUTE 2 FDBKN1 FDBKP1 Y2 Y2B Y1B Y1 OCD1 1.0K;1% C38 470p;50V + 2 D1 1 LED;GREEN POWER ON FDBKP1 D2 LED;RED 1.0K;1% R14 C39 470p;50V R12 14K;1% FBN1 C38, C39, C40, and C41 must be very close to U3. A IN1 2 1 A FDBKN2 R22 R19 14K;1% 1.0K;1% C40 390p;50V FBP2 R24 5K POT 1 3 + R2 500K R3, R7, R12, R14, R19, R22, R27, and R30 must be close to U3. RCA_RT_ANG J10 C9 2.2u;10V;PCS2225CT-ND 1 C27 .1u;50V R26 500K FDBKP2 IN2 14K;1% VP2 R31 20K R30 1.0K;1% C41 390p;50V R27 FBN2 1 + R29 20K IN2 2 2 Title TK2051 EVAL BOARD Size B Date: Document Number 1.3 1 1 V5 VCC U2 IN1A IN1A IBIAS C12 .1u R37 10K CONFIG PWRDN R40 10K C18 .1u FAULT TRISTATE C21 .1u TH_WAR IN1B IN1B 28 30 VCC1B OUT1B M4 18 NC VCC IBIAS IN2A VDD V5 2 R45 10K 1 TH_WAR C30 .1u C31 .1u VDD VSS VSS 31 21 22 33 34 VCC2A OUT2A VDD VDD VSS VSS REGULATORS M15 GND2A OUT2A 7 8 OUT2A 9 6 C24 .1u;50V C26 NO STUFF C28 .47u;63V;P4544-ND C29 1000p;50V FBN1 FBP2 L3 11u J7 J147-ND C25 .47u;50V;P4671-ND OUT1B GND1B 12 11 OUT1B 10 13 L2 11u C22 .1u;50V C23 .47u;50V;P4671-ND 27 26 FAULT TRISTATE R42 VCC R43 NO STUFF 10;1W C20 1000p;50V 29 23 24 25 IN1A IBIAS OUT1A CONFIG PWRDN PROTECTION & LOGIC M2 GND1A M3 VCC1A OUT1A 15 17 OUT1A 16 14 C10 .1u;50V C13 NO STUFF C15 .47u;63V;P4544-ND C16 1000p;50V L1 11u OUT1P C11 .47u;50V;P4671-ND J5 J147-ND FBP1 OUT1+ C17 .1u;100V;P4725-ND TH_WAR IN1B M5 OUT1OUT1N J6 J147-ND IN2A IN2A M17 OUT2P A A OUT2+ C32 .1u;100V;P4725-ND R50 10;1W C34 1000p;50V Q4 BSS84CT-ND 3 R47 750 VCCSIGN VCCSIGN 35 36 20 32 19 1 VCCSIGN VCCSIGN GNDREG IN2B GNDCLEAN GNDSUB TP2051 FBN2 M14 M16 VCC2B OUT2B OUT2B GND2B 4 3 OUT2B 2 5 L4 11u C35 .1u;50V C36 .47u;50V;P4671-ND VCC R51 NO STUFF C19 .1u GNDREG IN2B GNDCLEAN GNDSUB D4 LED;RED 1 IN2B OUT2OUT2N J8 J147-ND 2 VCC SCOPE_GND J25 VCC J147-ND J4 C37 1000u;50V;P5575ND + Title TK2051 EVAL BOARD J3 J147-ND Size B Date: Document Number 1 TA2051 EVAL BOARD Revised: 04/12/02 Revision: 1.3 Page1 Item Quantity Reference Part ______________________________________________ 1 2 3 4 5 6 7 8 9 10 11 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 13 1 2 2 5 0 2 4 2 1 2 2 2 1 6 2 2 2 1 4 4 1 1 4 1 4 2 2 C1,C2,C3,C4,C5,C7,C10, C19,C22,C24,C27,C33,C35 C6 C8,C9 C11,C25, C23, C37 C12,C18,C21,C30,C31 C26,C13 (NO STUFF) C15,C28 C16,C20,C29,C34 C32,C17 C37 C38,C39 C40,C41 D2,D4 D1 J1,J3,J5,J6,J7,J8 J4,J2 J9,J10 J25,J11 J16 J27,J28,J29,J30 L1,L2,L3,L4 Q4 R1 R3,R12,R19,R27 R5 R7,R14,R22,R30 R8,R47 R24,R16 .1u;50V 100u;16V;P5529-ND 2.2u;10V;PCS2225CT-ND .47u;50V;P4671-ND .1u 1000p;100V;NPO;PCC1970CT-ND .47u;63V;P4544-ND 1000p;50V .1u;100V;P4725-ND 560u;50V;P10329-ND 470pF;50V; PCC471CGCT-ND 390pF;50V; PCC391CGCT-ND LED, RED LED, GREEN J147-ND J147-ND RCA_RT_ANG 5011K-ND B3S STANDOFF 11u BSS84CT-ND 0 14K;1% 8.2K 1.0K;1% 750 5K POT CAP0805 cape\100\200 CAP3216 CAP200W CAP0805 CAP0805 CAP7.5\10X4 CAP0805 CAP200W CAPE\300\700 CAP0805 CAP0805 LED LED BANANA_PLT_A BANANA_PLT_AG RCA sip-1p_loop SIP-3P STANDOFF_440 T600-06 CORE SOT23_FC RES0805 RES0805 RES0805 RES0805 RES0805 must be 100V NPO ok to substitute 100V;NPO 3/4" American Cores AW600-06-40T-24-V must be 1% must be 1% 30 31 32 33 34 35 36 37 38 39 4 4 3 1 2 0 1 1 1 1 R2,R4,R26,R18 R21,R23,R29,R31 R37,R40,R45 R33 R50,R42 R43,R51(NO STUFF) R53 R54 U2 U3 500K 20K 10K 2K 10;1W;P10W-1BK-ND 40;1/4W 11K 22K TP2051 TC2000 RES0805 RES0805 RES0805 RES0805 R1/4WA R1/4WA RES0805 RES0805 TP2051 SO28 must be 1W through hole must be 1/4W through hole supplied by Tripath supplied by Tripath |
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