Hypex Electronics BV Kattegat JP Groningen, The Netherlands

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Hypex Electronics BV Kattegat 8 9723 JP Groningen, The Netherlands +3 50 526 4993 sales@hypex.

nl High Grade Audio Power Amplifier Module High Grade Version Highlights Flat, fully load-independent frequency response Low output impedance Very low, frequency-independent

audio input No compromise components LM4562 buffer OpAmp HxR2 ready Improved on-board buffer supply Overcurrent and overvoltage protection Weight: 90gms (3.oz.

systems Active loudspeakers Description The UcD80HG amplifier module is a self-contained high-performance class D amplifier intended for a wide range of audio applications,

1 Hypex Electronics BV Kattegat JP Groningen, The Netherlands sales@hypex.nl High Grade Audio Power Amplifier Module High Grade Version Highlights Flat, fully load-independent frequency response Low output impedance Very low, frequency-independent THD Very low noise Fully passive loop control Consistent top performer in listening trials Features Runs on unregulated +/- rails Pop-free start and stop control Differential audio input No compromise components LM4562 buffer OpAmp HxR2 ready Improved on-board buffer supply Overcurrent and overvoltage protection Weight: 90gms (3.oz.) Applications Monitor loudspeakers for recording and mastering studios Audiophile power amplifiers for professional and consumer use Public Address systems Home theatre systems Active loudspeakers Description The UcD80HG amplifier module is a self-contained high-performance class D amplifier intended for a wide range of audio applications, ranging from Public Address systems to ultrahigh-fidelity replay systems for studio and home use. Chief distinguishing features are flat frequency response irrespective of load impedance, nearly frequency-independent distortion behaviour and very low radiated and conducted EMI. Control is based on a phase-shift controlled self-oscillating loop taking feedback only at the speaker output. In+ In- Control Circuit Switch Driver Switch Driver Out R3

2 Contents Contents...2 Performance data Absolute maximum ratings Recommended Operating Conditions Connections Typical Performance Graphs...4 Performance data Power supply = +/-45V, Load=4Ω, MBW=40k, unless otherwise noted Output Power P R W THD=%, Load=4Ω W THD=%, Load=8Ω Distortion THD+N % 20<f<20k ) Pout<P R / % 20<f<20k. Pout=W Output noise U N µv Unwtd, 20-20k Output Impedance Z OUT mω f<k mω f<20k 2) Power Bandwidth PBW 20-35k Frequency Response 0-50k +0/-3dB. All loads Voltage Gain A V db Supply Ripple PSRR 65 db Either rail, all frequencies Rejection Efficiency η 92 % Full power Idle Losses P 0 4 W Standby Current I STBY 0 ma Current Limit 0 A Stop mode after limiting 40ms. Note : At higher audio frequencies there are not enough harmonics left in the audio band to make a meaningful THD measurement. High frequency distortion is therefore determined using a 8.5k+9.5k : two-tone IMD test. Note 2: Dielectric losses in the output capacitor limit long term (>30s) full-power bandwidth to 5k. 2 Absolute maximum ratings Correct operation at these limits is not guaranteed. Operation beyond these limits may result in irreversible damage Item Symbol Rating Unit Notes Power supply voltage V B +/-56 V Unit shuts down when either rail exceeds 56V Peak output current I OUT,P 0 A Unit current-limits at 0A Input voltage V IN +/-2 V Either input referred to ground Air Temperature T AMB 65 C Heat-sink temperature T SINK 90 C User to select heat sink to insure this condition under most adverse use case 3 Recommended Operating Conditions Power supply voltage V B 30 ) ) V Load impedance Z LOAD Ω R3 2

3 Source impedance Z SRC 7 kω Differential. Corresponds to 3dB noise increase. Effective power supply storage capacitance C SUP 4700 µf Per rail, per attached amplifier. 4Ω load presumed. Note :Unit shuts down when either rail drops below 25V. Note 2:Unit shuts down when either rail exceeds 56V. 4 Connections 4. J4: Input and ON/OFF control Connector type: 4-pin MOLEX KK series, part number Pin Function ON/OFF control ) 2 Inverting Audio Input 3 GND 4 Noninverting Audio Input Note : During initial power up this pin is disabled for a period of.5s. Unlike previous UcD80 models there is no delay after enabling the amplifier. 4.2 Input Characteristics Input Impedance Z IN 00 kù Either input to ground Common Mode CMRR 75 db All frequencies Rejection Ratio Control voltage on 3 V pin 4, amplifier ON Control voltage on pin 4, amplifier OFF 2 V Internally pulled up to 2V Note: It is recommended to use an open collector output to control the on/off pin. 4.3 J5: Loudspeaker output (hot) 4.4 J6: Loudspeaker output (cold) Internally connected to GND. Note: This is the feedback reference. For best performance, do not use another ground connection for the loudspeaker. 4.5 J3: Positive power supply connection, +VB 4.6 J2: Negative power supply connection, -VB 4.7 J: Power supply ground connection, GND R3 3

4 5 Typical Performance Graphs 5. THD vs. Power (k, 4Ω) % m 20m 50m 00m 200m 500m W 5.2 THD vs. Frequency (8Ù) % k 2k 5k 0k 20k From top to bottom: 40W, 0W, WFrequency Response (4Ù, 8Ù and open circuit) 5.3 Frequency Response (4Ω, 8Ω and open circuit) +0 d B r A k 2k 5k 0k 20k 50k 00k From top to bottom: open circuit, 8Ù, 4Ù R3 4

5 5.4 Output Impedance 500m O h m s 200m 00m 50m 20m 0m k 2k 5k 0k 20k k IMD (0W, 4 ohms) d B r A k 4k 6k 8k 0k 2k 4k 6k 8k 20k DISCLAIMER: This subassembly is designed for use in music reproduction equipment only. No representations are made as to fitness for other uses. Except where noted otherwise any specifications given pertain to this subassembly only. Responsibility for verifying the performance, safety, reliability and compliance with legal standards of end products using this subassembly falls to the manufacturer of said end product. LIFE SUPPORT POLICY: Use of Hypex products in life support equipment or equipment whose failure can reasonably be expected to result in injury or death is not permitted except by explicit written consent from Hypex Electronics BV. Document Revision PCB Version Description Date R UcD80HGV/2 Initial draft. R2 UcD80HGV2: - OVP level increased to 56V to for compatibility SN from _000 reasons SMPS400/49. - Input resistor values changed. R3 UcD80HGV2 Format changed R3 5

High Efficiency Power Amplifier Module. Features

Hypex Electronics BV Kattegat 8 9723 JP Groningen, The Netherlands +31 50 526 4993 sales@hypex.nl www.hypex.nl High Grade Version High Efficiency Power Amplifier Module Highlights Flat, fully load-independent