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TDA8920TH Datasheet(PDF) 2 Page - NXP Semiconductors |
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TDA8920TH Datasheet(HTML) 2 Page - NXP Semiconductors |
2 / 16 page 1998 Dec 01 2 Philips Semiconductors Preliminary specification 2 × 50 W class-D power amplifier TDA8920 FEATURES • High efficiency (90%) • Operating voltage from ±15Vto ±30 V • Very low quiescent current • Low distortion • Fixed gain of 30 dB • High output power • Output power limiter • Good ripple rejection • Usable as a mono amplifier in Bridge-Tied Load (BTL) or as a stereo Single-Ended (SE) amplifier • Tracking possibility for oscillator frequency • Differential audio inputs • No switch-on or switch-off plops • Short-circuit proof across the load • Electrostatic discharge protection on all pins • Thermally protected. APPLICATIONS • Television sets • Home-sound systems • Multimedia systems. GENERAL DESCRIPTION The TDA8920 is a high efficiency class-D audio power amplifier. It can be used in a mono Bridge-Tied Load (BTL) or in a stereo Single-Ended (SE) configuration. The device operates over a wide supply voltage range from ±15Vupto ±30 V and consumes a very low quiescent current. QUICK REFERENCE DATA SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT General VDD operating supply voltage ±15 ±25 ±30 V Iq(tot) total quiescent current − 50 60 mA η efficiency Po = 10 W 85 90 − % Stereo single-ended configuration Po output power THD = 10% tbf 35 − W Gv(cl) closed loop voltage gain 29 30 31 dB Z i input impedance 80 120 − k Ω Vn(o) noise output voltage − 100 −µV SVRR supply voltage ripple rejection 60 −− dB α cs channel separation 50 tbf − dB Mono bridge-tied load configuration Po output power THD = 10% − 130 − W Gv(cl) closed loop voltage gain 35 36 37 dB Zi input impedance 40 60 − k Ω Vn(o) noise output voltage − 140 −µV SVRR supply voltage ripple rejection 66 −− dB ∆V O DC output offset voltage −− 50 mV |
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