Datenblatt-Suchmaschine für elektronische Bauteile |
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TDA8946AJ Datenblatt(PDF) 9 Page - NXP Semiconductors |
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TDA8946AJ Datenblatt(HTML) 9 Page - NXP Semiconductors |
9 / 20 page Philips Semiconductors TDA8946AJ 2 x 15 W BTL audio amplifier with DC gain control Product data Rev. 01 — 01 March 2002 9 of 20 9397 750 09434 © Koninklijke Philips Electronics N.V. 2002. All rights reserved. 12. Dynamic characteristics [1] The noise output voltage is measured at the output in a frequency range from 20 Hz to 20 kHz (unweighted), with a source impedance Rsource =0 Ω at the input. [2] Supply voltage ripple rejection is measured at the output, with a source impedance Rsource =0 Ω at the input. The ripple voltage is a sine wave with a frequency fripple and an amplitude of 700 mV (RMS), which is applied to the positive supply rail. [3] Output voltage in mute mode is measured with VGC = 0 V and an input voltage of 1 V (RMS) in a bandwidth of 20 kHz, thus including noise. Table 8: Dynamic characteristics VCC =18V; Tamb =25 °C; RL =8 Ω; f = 1 kHz; VMODE =0V; Gv = 30 dB; VGC = 4.0 V; measured in test circuit Figure 15; unless otherwise specified. Symbol Parameter Conditions Min Typ Max Unit Po output power THD = 10% 13 15 - W THD = 0.5% - 11.5 - W THD total harmonic distortion Po = 1 W - 0.07 0.5 % Gv(max) maximum voltage gain 29 30 31 dB Gv(cr) gain control range 0.5 < VGC < 4.0 V - 80 - dB Vi(rms) input voltage (RMS value) Gv = 0 dB; THD <1% 1.0 - - V Zi(dif) differential input impedance 50 65 - k Ω Vn(o) noise output voltage VGC = 4.0 V [1] - 120 170 µV VGC = 1.0 V [1] -30 - µV SVRR supply voltage ripple rejection fripple = 1 kHz [2] -55 - dB fripple = 100 Hz to 20 kHz [2] -55 - dB Vo(mute) output voltage mute mode [3] -30 50 µV αcs channel separation Rsource =0 Ω 50 75 - dB |∆Gv| channel unbalance Gv = 0 dB; VGC = 1.8 V - - 1 dB VCC =18V Vi =30mV; VCC =18V Fig 6. Voltage gain as function of control voltage. Fig 7. Output voltage as function of mode voltage. handbook, halfpage 02 13 4 VGC (V) Gv (dB) 40 −20 20 0 −60 −80 −40 MGW613 handbook, halfpage VMODE (V) Vo (V) 0 4 8 12 16 20 MGW614 10 1 10−1 10−2 10−3 10−4 10−5 |
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