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TPA2000D1-Q1 Folha de dados(PDF) 6 Page - Texas Instruments |
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TPA2000D1-Q1 Folha de dados(HTML) 6 Page - Texas Instruments |
6 / 22 page TYPICAL CHARACTERISTICS Test Setup for Graphs EFFICIENCY vs OUTPUT POWER 50 30 20 0 0 0.5 1 1.5 2 70 80 100 2.5 3 3.5 10 40 60 90 PO − Output Power − W RL = 3 Ω, 33 µH Class-AB, RL = 4 Ω RL = 4 Ω, 33 µH RL = 8 Ω, 33 µH TPA2000D1-Q1 SGLS137E – SEPTEMBER 2002 – REVISED OCTOBER 2008 ........................................................................................................................................ www.ti.com Table of Graphs FIGURE η Efficiency vs Output power 1 FFT at 1.5-W output power vs Frequency 2 vs Output power 3, 4, 5 THD+N Total harmonic distortion + noise vs Frequency 6, 7 kSVR Supply ripple rejection ratio vs Frequency 8 The THD+N measurements shown do not use an LC output filter, but do use a 100- Ω 0.047- µF RC low-pass filter with a cutoff frequency of ~30 kHz before the audio analyzer, so the switching frequency does not dominate the measurement. This is done to ensure that the THD+N measured is just the audible THD+N. The THD+N measurements are shown at the highest gain for worst case. The efficiency was measured with no filters and a 3- Ω, 4-Ω, or 8-Ω resistor in series with a 33- µH inductor as the load. Figure 1. 6 Submit Documentation Feedback Copyright © 2002–2008, Texas Instruments Incorporated Product Folder Link(s): TPA2000D1-Q1 |
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