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| (R) Rev. 1.7 1.4 W Mono Filterless Class D Audio power Amplifier (MSOP / DFN) Compatible with LY8890/8891/8891B Single-Ended Input GENERAL DESCRIPTION The LY8006 is a high efficiency, 1.4 W mono class D audio power amplifier. It is a low noise, filterless PWM architecture eliminates the output filter, reducing external component count, system cost, and simplify design. The LY8006 is designed to meet of portable electronic devices. The LY8006 is a single 5V supply, it is capable of driving 8 speaker load at a continuous average output of 1.4 W with 10% THD+N. The LY8006 has high efficiency with speaker loads compared to a typical Class AB amplifier. With a 3.6V supply driving an 8 speaker, the LY8006 efficiency for a 400mW power level is 88%. In cellular handsets, the earpiece, speaker phone, and melody ringer can each be driven by the LY8006.The gain of the LY8006 is externally configurable which allows independent gain control from multiple sources by summing the signals. Output pin short circuit ( short to output pin, short to ground and short to VDD ) protection prevent the device from damage during fault conditions. LY8006 FEATURES 1.4 W Into 8 from 5V power supply at THD = 10% (Typ). 2.5V~5.5V power supply. Low shutdown current. Low quiescent current. Minimum external components. No output filter required for inductive loads. Output Pin Short-Circuit Protection (Short to Output Pin, Short to GND, Short to VCC) Low noise during turn-on and turn-off transitions. Easy upgrade Class AB (LY8990/LY8891) to Class D (Pin to Pin Replace). Lead free and green package available. (RoHS Compliant) Space Saving Package - 8-pin MSOP package. - 8-pin DFN package APPLICATION Portable electronic devices Mobile Phones PDAs PIN CONFIGURATION Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 1 (R) Rev. 1.7 1.4 W Mono Filterless Class D Audio power Amplifier (MSOP / DFN) Compatible with LY8890/8891/8891B Single-Ended Input LY8006 PIN DESCRIPTION SYMBOL SHUTDOWN Pin No. MSOP 1 2 3 4 5 6 7 8 DFN 1 2 3 4 5 6 7 8 Bypass pin No Internal connection Negative input Positive BTL output Power supply Ground Negative BTL output DESCRIPTION Shutdown the device.(when low level is active the pin) BYPASS NC -IN Vo1 VDD GND Vo2 ORDERING INFORMATION LY 8 006 VV V : Package Type UL : 8-Pin MSOP BL : 8-Pin DFN Product Name A : Product Line LY : Lyontek Product Number Prefix Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 2 (R) Rev. 1.7 1.4 W Mono Filterless Class D Audio power Amplifier (MSOP / DFN) Compatible with LY8890/8891/8891B Single-Ended Input LY8006 APPLICATION CIRCULT Figure 1. Application Schematic With Single-Ended Input Configuration Single-End Input With Pre-Amplifier Gain = (150 K / 5 K) * 2 = 60 Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 3 (R) Rev. 1.7 1.4 W Mono Filterless Class D Audio power Amplifier (MSOP / DFN) Compatible with LY8890/8891/8891B Single-Ended Input LY8006 Figure 2. Application Schematic With Single-Ended Input Configuration Single-End Input With Pre-Amplifier Gain = [150 K / ( 5 K+ Ri )] * 2 ABSOLUTE MAXIMUN RATINGS PARAMETER Supply Voltage Operating Temperature Input Voltage Storage Temperature Power Dissipation ESD Susceptibility Junction Temperature Soldering Temperature (under 10 sec) SYMBOL VDD TA VI TSTG PD VESD TJMAX TSOLDER RATING 6.0 -40 to 85 ( I grade) -0.3V to VDD +0.3V -65 to 150 Internally Limited 2000 150 260 UNIT V V W V Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 4 (R) Rev. 1.7 1.4 W Mono Filterless Class D Audio power Amplifier (MSOP / DFN) Compatible with LY8890/8891/8891B Single-Ended Input LY8006 ELECTRICAL CHARACTERISTICS (TA = 25,Unless otherwise noted) TEST CONDITION VI = 0 V, Av = 2 V/V, |VOS| VDD = 2.5 V to 5.5 V |IIH| VDD = 5.5 V, VI = 5.8 V |IIL| VDD = 5.5 V, VI = 0.3 V PSRR VDD = 2.5 V to 5.5 V VDD = 5.5V, No Load Quiescent Current IQ VDD = 3.6V, No Load VDD = 2.5V, No Load VSHUTDOWN 0.8V, Shutdown Current ISD VDD = 2.5V to 5.5V VDD= 2.5V to 5.5V Total Gain (*) RL = 8 (*)The audio amplifier's gain is determined by PARAMETER Output offset voltage (measured differentially) High-level input current Low-level input current Power supply rejection ratio SYMBOL MIN. TYP. -75 3.4 2.8 2.2 0.3 MAX. 25 100 5 -55 4.5 3.2 2 UNIT mV uA uA dB mA A V/V [300K / (5K+Ri)] x2 (TYP.) Pre-Amplifier Gain = [150K / ( 5K + Ri )] x 2 Total Gain = {[150K / ( 5K + Ri )] x 2} x 2 where Ri is the external serial resistance at the input pin. OPERATING CHARACTERISTICS (TA = 25, Gain = 2V/V, RL = 8, Unless otherwise noted) PARAMETER SYMBOL TEST CONDITION THD+N= 10%, f = 1 kHz, RL= 8 Out Power Po THD+N= 1%, f = 1 kHz, RL= 8 PO = 1 W, f = 1 kHz, RL = 8 PO = 0.5 W, f = 1 kHz, Total harmonic distortion + noise THD+N RL = 8 PO = 0.2 W, f = 1 kHz, RL = 8 f = 217 Hz, V(RIPPLE) = 200mVpp, Supply ripple rejection ratio KSVR inputs ac-grounded with Ci = 2uF Signal-to-noise ratio SNR PO= 1 W, RL = 8 VDD = 3.6 V, f = 20 Hz to 20 kHz, Output voltage noise Vn Inputs ac-grounded with Ci = 2 F Start-up time from shutdown ZI VDD = 3.6 V VDD=5.0V VDD=3.6V VDD=2.5V VDD=5.0V VDD=3.6V VDD=2.5V VDD=5V VDD=3.6V VDD=2.5V MIN. - TYP. 1.55 0.79 0.36 1.2 0.6 0.3 0.2 0.18 0.15 MAX. - UNIT W % VDD=3.6V - -56 97 48 36 110 - dB dB uVRMS ms VDD=5V No weighting A weighting Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 5 (R) Rev. 1.7 1.4 W Mono Filterless Class D Audio power Amplifier (MSOP / DFN) Compatible with LY8890/8891/8891B Single-Ended Input LY8006 TYPICAL PERFORMANCE CHARACTERISTICS Figure 3 Total Harmonic Distortion + Noise vs Output Power Figure 4 Total Harmonic Distortion + Noise vs Frequency Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 6 (R) Rev. 1.7 1.4 W Mono Filterless Class D Audio power Amplifier (MSOP / DFN) Compatible with LY8890/8891/8891B Single-Ended Input Figure 5 Efficiency vs Output power ( RL=8, 33H) LY8006 Figure 6 Power dissipation vs Output power ( RL=8, 33H) Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 7 (R) Rev. 1.7 1.4 W Mono Filterless Class D Audio power Amplifier (MSOP / DFN) Compatible with LY8890/8891/8891B Single-Ended Input Figure 7 Supply Current vs Output Power ( RL=8, 33H) LY8006 Figure 8 Output Power vs Load Resistance (Po at 10 % THD with f = 1 kHz) Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 8 (R) Rev. 1.7 1.4 W Mono Filterless Class D Audio power Amplifier (MSOP / DFN) Compatible with LY8890/8891/8891B Single-Ended Input Figure 9 Output Power vs Load Resistance (Po at 1 % THD with f = 1 kHz) LY8006 Figure 10 THD+N & Output Power vs Temperature (VDD=3V, RL=8) 100 10 TH D +N (% ) 1 0.1 25C 80C 85C -20C -40C 0.01 0.001 0.01 0.1 1 Po-O utput Pow er (W ) Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 9 (R) Rev. 1.7 1.4 W Mono Filterless Class D Audio power Amplifier (MSOP / DFN) Compatible with LY8890/8891/8891B Single-Ended Input Figure 11 THD+N & Output Power vs Temperature (VDD=4.5V, RL=8) LY8006 100 10 THD+N (%) 1 25C 0.1 80C 85C -20C -40C 0.01 0.001 0.01 0.1 1 10 Po-O utput Pow er (W ) Figure 12 THD+N & Output Power vs Temperature (VDD=5.0V, RL=8) 100 10 THD +N (% ) 1 0.1 25C 80C 85C -20C -40C 0.01 0.001 0.01 0.1 1 10 Po-O utput Pow er (W ) Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 10 (R) Rev. 1.7 1.4 W Mono Filterless Class D Audio power Amplifier (MSOP / DFN) Compatible with LY8890/8891/8891B Single-Ended Input LY8006 APPLICATION INFORMATION Input Resistors (Ri) and Gain The input resistors (Ri) set the gain of the amplifier according to the equation. Pre-Amplifier Gain = (Rf / Ri) x 2 = [150K / ( 5K + Ri )] x 2 Total Gain = [(Rf / Ri) x 2] x 2 = {[150K / ( 5K + Ri )] x 2} x 2 AVD = 20 x log {2 x [(Rf /Ri ) x2]} The resistor matching is very important in the amplifiers. Balance of the output on the reference voltage depends on matched ratio of the resistors. CMRR, PSRR, and cancellation of the second harmonic distortion if resistor mismatch occurs. Therefore, it is recommended to use 1% tolerance resistors or better to keep the performance optimized. Matching is more important than overall tolerance. Resistor arrays with 1% matching can be used with a tolerance greater than 1%.Place the input resistors very close to the LY8006 to limit noise injection on the high-impedance nodes. For optimal performance the gain should be set to 2 V/V or lower. Lower gain allows the LY8006 to operate at its best, For example Table 1. Typical Total Gain and AVD Values Rf (K) Ri (K) Pre AMP. Gain Total Gain AVD (db) 150 300 1 2 6.02 150 150 2 4 12.04 150 100 3 6 15.56 150 75 4 8 18.06 150 50 6 12 21.58 150 37.5 8 16 24.08 Input Capacitors (Ci) The LY8006 using a single-ended source, So the input coupling capacitors are required. The input capacitors and input resistors form a high-pass filter with the corner frequency(fc), determined in the equation. fc = 1 / ( 2Ri Ci ) The value of the input capacitor is important to consider as it directly affects the bass (low frequency) performance of the circuit. Speakers in wireless phones cannot usually respond well to low frequencies, so the corner frequency can be set to block low frequencies in this application. Equation is reconfigured to solve for the input coupling capacitance. Ci = 1 / ( 2Ri fc ) If the corner frequency is within the audio band, the capacitors should have a tolerance of 10% or better, because any mismatch in capacitance causes an impedance mismatch at the corner frequency and below. Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 11 (R) Rev. 1.7 1.4 W Mono Filterless Class D Audio power Amplifier (MSOP / DFN) Compatible with LY8890/8891/8891B Single-Ended Input LY8006 For example In the table 2 shows the external components. Rin in connect with Cin to create a high-pass filter. Table 2. Typical Component Values Reference Description Note Ri 150K 1% tolerance resistors Ci 0.22uF 80%/-20% Ci = 1 / ( 2Ri fc) Ci = 1 / ( 2*150K*4.8Hz)=0.221uFUse 0.22uF Two Single-Ended Input Signals Two resistors and two capacitors are needed for summing single-ended input signals. The gain and corner frequencies (fc1 and fc2) for each input source can be set independently. Pre-Amplifier Gain 1 = [150K / ( 5K + Ri1 )] x 2 Pre-Amplifier Gain 2 = [150K / ( 5K + Ri2 )] x 2 Ci1 = 1 / ( 2Ri1 fc1 ) Ci2 = 1 / ( 2Ri2 fc2 ) Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 12 (R) Rev. 1.7 1.4 W Mono Filterless Class D Audio power Amplifier (MSOP / DFN) Compatible with LY8890/8891/8891B Single-Ended Input LY8006 Figure 7. Application Schematic With Two Single-Ended Inputs Configuration PCB Layout All the external components must place very close to the LY8006. The input resistors need to be very close to the LY8006 input pins so noise does not couple on the high impedance nodes between the input resistors and the input amplifier of the LY8006. Then place the decoupling capacitor Cs, close to the LY8006 is important for the efficiency of the class-D amplifier. Any resistance or inductance in the trace between the device and the capacitor can cause a loss in efficiency. Making the high current traces going to VDD, GND, VO+ and VO- pins of the LY8006 should be as wide as possible to minimize trace resistance. If these traces are too thin, the LY8006's performance and output power will decrease. The input traces do not need to be wide, but do need to run side-by-side to enable common-mode noise cancellation. Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 13 (R) Rev. 1.7 1.4 W Mono Filterless Class D Audio power Amplifier (MSOP / DFN) Compatible with LY8890/8891/8891B Single-Ended Input LY8006 LY8006UL/LY8006BL Demo Board Artwork Top Silkscreen Top Layer Composite view Bottom Layer LY8006 V1.1 BOM List No. 1 2 3 4 5 6 7 Description Resistor, 100K Capacitor, 0.39uF Capacitor, 0.1uF Capacitor, 10.0uF Capacitor, 1.0uF 1*2 Pin Header NC Reference R2,R3 C2 C3 C4 C5 J1 R1,C1,J2 Close Active Note Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 14 (R) Rev. 1.7 1.4 W Mono Filterless Class D Audio power Amplifier (MSOP / DFN) Compatible with LY8890/8891/8891B Single-Ended Input LY8006 PACKAGE OUTLINE DIMENSION 8 Pin MSOP Package Outline Dimension Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 15 (R) Rev. 1.7 1.4 W Mono Filterless Class D Audio power Amplifier (MSOP / DFN) Compatible with LY8890/8891/8891B Single-Ended Input LY8006 8 Pin DFN Package Outline Dimension Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 16 |
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