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TPA2025D1YZGT Fiches technique(PDF) 6 Page - Texas Instruments |
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TPA2025D1YZGT Fiches technique(HTML) 6 Page - Texas Instruments |
6 / 23 page TPA2025D1 SLOS717A – AUGUST 2011 – REVISED FEBRUARY 2012 www.ti.com OPERATING CHARACTERISTICS (continued) VBAT= 3.6 V, EN = VBAT, AGC = GND, TA = 25°C, RL = 8 Ω + 33 μH (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT 200 mVPP square ripple, VBAT = 3.8 V, f = 217 Hz 71 AC-Common mode rejection ratio AC CMRR dB (output referred) 200 mVPP square ripple, VBAT = 3.8 V, f = 1 kHz 71 AUTOMATIC GAIN CONTROL AGC maximum attenuation 10 dB AGC attenuation resolution 0.5 dB AGC attack time (gain decrease) 20 µs/dB AGC release time (gain increase) 1.6 s/dB Gain vs VBAT slope VBAT < inflection point 7.5 dB/V AGC inflection point AGC = Float 3.25 (Note: AGC pin voltage is read only AGC = GND 3.55 at device power-up. A device power V cycle is required to change AGC AGC = VBAT 3.75 inflection points.) TEST SET-UP FOR GRAPHS (1) The 1 µF input capacitors on IN+ and IN- were shorted for input common-mode voltage measurements. (2) A 33 µH inductor was placed in series with the load resistor to emulate a small speaker for efficiency measurements. (3) The 30 kHz low-pass filter is required even if the analyzer has an internal low-pass filter. An R-C low-pass filter (100 Ω, 47 nF) is used on each output for the data sheet graphs. 6 Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated Product Folder Link(s): TPA2025D1 |
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