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TPA3250D2DDW Folha de dados(PDF) 9 Page - Texas Instruments |
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TPA3250D2DDW Folha de dados(HTML) 9 Page - Texas Instruments |
9 / 41 page 9 TPA3250 www.ti.com SLASE99A – DECEMBER 2015 – REVISED APRIL 2016 Product Folder Links: TPA3250 Submit Documentation Feedback Copyright © 2015–2016, Texas Instruments Incorporated (1) SNR is calculated relative to 1% THD+N output level. (2) Actual system idle losses are affected by core losses of output inductors. 7.7 Audio Characteristics (SE) PCB and system configuration are in accordance with recommended guidelines. Audio frequency = 1 kHz, PVDD_X = 32 V, GVDD_X = 12 V, RL = 4 Ω, fS = 450 kHz, ROC = 22 kΩ, TA = 25°C, Output Filter: LDEM = 15 μH, CDEM = 1 µF, MODE = 11, AES17 + AUX-0025 measurement filters, unless otherwise noted. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT PO Power output per channel RL = 4 Ω, 10% THD+N 33 W RL = 3 Ω, 10% THD+N 42 RL = 4 Ω, 1% THD+N 27 RL = 3 Ω, 1% THD+N 34 THD+N Total harmonic distortion + noise 1 W 0.015% Vn Output integrated noise A-weighted, AES17 filter, Input Capacitor Grounded 111 μV SNR Signal to noise ratio(1) A-weighted 100 dB DNR Dynamic range A-weighted 100 dB Pidle Power dissipation due to idle losses (IPVDD_X) PO = 0, 4 channels switching (2) 0.5 W (1) SNR is calculated relative to 1% THD+N output level. (2) Actual system idle losses are affected by core losses of output inductors. 7.8 Audio Characteristics (PBTL) PCB and system configuration are in accordance with recommended guidelines. Audio frequency = 1 kHz, PVDD_X = 32 V, GVDD_X = 12 V, RL = 4 Ω, fS = 450 kHz, ROC = 22 kΩ, TA = 25°C, Output Filter: LDEM = 10 μH, CDEM = 1 µF, MODE = 10, AES17 + AUX-0025 measurement filters, unless otherwise noted. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT PO Power output per channel RL = 8 Ω, 10% THD+N 75 W RL = 4 Ω, 10% THD+N 145 RL = 3 Ω, 10% THD+N 189 RL = 8 Ω, 1% THD+N 60 RL = 4 Ω, 1% THD+N 115 RL = 3 Ω, 1% THD+N 150 THD+N Total harmonic distortion + noise 1 W 0.015% Vn Output integrated noise A-weighted, AES17 filter, Input Capacitor Grounded 62 μV SNR Signal to noise ratio(1) A-weighted 112 dB DNR Dynamic range A-weighted 107 dB Pidle Power dissipation due to idle losses (IPVDD_X) PO = 0, 4 channels switching (2) 0.6 W |
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