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TPA3144D2PWPR データシート(PDF) 10 Page - Texas Instruments |
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TPA3144D2PWPR データシート(HTML) 10 Page - Texas Instruments |
10 / 40 page Total Output Power (W) 0 1 2 3 4 5 6 7 8 9 10 11 12 0 10 20 30 40 50 60 70 80 90 100 D015 PVcc = 6 V PVcc = 13 V PVcc = 14.4 V Output Power (W) 0.01 0.1 1 7 0.01 0.1 1 10 D001 20 Hz 1 kHz Supply Voltage (V) 4 5 6 7 8 9 10 11 12 13 14 15 0 3 6 9 12 15 D001 TPA3144D2 SLOS907B – APRIL 2015 – REVISED JULY 2015 www.ti.com Typical Characteristics (continued) All Measurements taken at 20dB closed loop gain, 1-kHz audio, TA = 25°C unless otherwise noted. Measurements were made with AES17 filter using the TPA3144D2 EVM, which is available at ti.com. AVCC=PVCC = 13 V, Load = 4 Ω + 33 µH, 20 Hz, 1 kHz, 6.7 kHz AVCC=PVCC = 4.5 V to 14.4 V, Load = 4 Ω + 33 µH, AGL + PLIM disable (LIMRATE = GND, LIMTHRES = GVDD) Figure 13. Total Harmonic Distortion + Noise vs Output Figure 14. Output Power vs Supply Voltage, 1SPW (PBTL) Power, 1SPW (PBTL) AVCC=PVCC = 6 V, 13 V, 14.4 V, Load = 4 Ω + 33 µH, AGL + PLIM disable (LIMRATE = GND, LIMTHRES = GVDD) Figure 15. Efficiency vs Output Power, 1SPW (PBTL) 8 Parameter Measurement Information All parameters are measured according to the conditions described in the Specifications and Typical Characteristics. Most audio analyzers will not give correct readings of Class-D amplifiers’ performance due to their sensitivity to out of band noise present at the amplifier output. An AES-17 pre analyzer filter is recommended to use for Class- D amplifier measurements. In absence of such filter, a 30-kHz low-pass filter (10 Ω + 47 nF) can be used to reduce the out of band noise remaining on the amplifier outputs. 10 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated Product Folder Links: TPA3144D2 |
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