tda8944aj NXP Semiconductors, tda8944aj Datasheet
tda8944aj
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tda8944aj Summary of contents
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... Rev. 01 — 01 March 2002 M3D541 1. General description The TDA8944AJ is a dual-channel audio power amplifier with DC gain control. It has an output power of 2 Bridge-Tied Load (BTL) amplifiers with an all-NPN output stage and standby/mute logic. The overall gain can be adjusted from +30 dB down using a DC control voltage ...
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... V CC2 IN1 6 IN1 13 TDA8944AJ GC 9 IN2 12 IN2 STANDBY/ MODE MUTE LOGIC SVR SGND GND1 Rev. 01 — 01 March 2002 TDA8944AJ Min Typ Max Version SOT243-1 1 OUT1 4 OUT1 14 OUT2 17 OUT2 SHORT CIRCUIT AND TEMPERATURE PROTECTION 2 15 MGW587 GND2 © ...
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... Rev. 01 — 01 March 2002 TDA8944AJ MGW588 © Koninklijke Philips Electronics N.V. 2002. All rights reserved ...
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... CC2 OUT2 8. Functional description The TDA8944AJ is a stereo BTL audio power amplifier capable of delivering 2 output power external heatsink. The gain of both amplifiers can be adjusted through a DC control voltage (pin GC). This feature can be used for volume control or a preset gain. ...
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... The maximum output power is limited by the supply = and ------------- = 252.4 mW 15.85 Rev. 01 — 01 March 2002 TDA8944AJ = 45 – Figure = THD = 0.2% (see Figure o Figure 12 on page 11 for 0 dB © Koninklijke Philips Electronics N.V. 2002. All rights reserved. (1) (2) 15). 8), the ...
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... For the average listening level a power dissipation can be used for a heatsink calculation. 8.3 Mode selection The TDA8944AJ has three functional modes, which can be selected by applying the proper DC voltage to pin MODE. Standby — In this mode the current consumption is very low and the outputs are fl ...
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... Philips Semiconductors 8.6 Built-in protection circuits The TDA8944AJ contains two types of protection circuits, i.e. short-circuit and thermal shutdown. 8.6.1 Short-circuit protection Short-circuit to ground or supply line — This is detected by a so-called ‘missing current’ detection circuit which measures the current in the positive supply line and the current in the ground line. A difference between both currents larger than 0.8 A, switches the power stage to the standby mode ...
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... MODE MGW590 50 handbook, halfpage I q (mA ( Fig 5. Quiescent current as function of mode voltage. Rev. 01 — 01 March 2002 TDA8944AJ Figure 15; unless otherwise specified. Min Typ Max 170 0 - 1.0 3.5 - ...
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... V and an input voltage (RMS bandwidth of 20 kHz, thus including GC MGW592 10 handbook, halfpage Fig 7. Output voltage as function of mode voltage. Rev. 01 — 01 March 2002 TDA8944AJ = 4.0 V; measured in test circuit Figure Min Typ Max 0. ...
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... P tot (W) ( Fig 11. Total power dissipation (worst-case) as function of supply voltage. Rev. 01 — 01 March 2002 TDA8944AJ MGW595 (1) ( (Hz) MGW597 (V) © Koninklijke Philips Electronics N.V. 2002. All rights reserved. ...
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... V; no bandpass filter applied CC Fig 13. Channel separation as function of frequency. 0 SVRR (Hz 100 Rev. 01 — 01 March 2002 TDA8944AJ MGW599 (Hz) MGW600 (Hz) © Koninklijke Philips Electronics N.V. 2002. All rights reserved ...
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... Equivalent circuit IN1+ and IN1 handbook, halfpage IN2+ and IN2 8, 9 OUT1 and OUT1+ handbook, halfpage OUT2 and OUT2+ MODE handbook, halfpage Rev. 01 — 01 March 2002 TDA8944AJ 1 (SVR) MGW601 V CC 600 ...
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... Product data BTL audio amplifier with DC gain control Internal circuitry …continued Symbol Equivalent circuit SVR handbook, halfpage GC handbook, halfpage 13 Rev. 01 — 01 March 2002 TDA8944AJ V CC Standby 17.6 k MGW604 2.75 V 5.65 k 2.5 k 736 MGW605 © ...
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... IN2 MODE 10 STANDBY/ MUTE LOGIC 20 k SHORT CIRCUIT SVR 11 TEMPERATURE 20 PROTECTION SGND GND1 GND2 Rev. 01 — 01 March 2002 TDA8944AJ V CC 100 nF 1000 F OUT1 1 220 OUT1 4 220 nF OUT2 14 220 OUT2 17 220 nF AND MGW606 © ...
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... OUT1 220 nF 4 OUT1 and 150 C is the total thermal resistance between the junction and the ambient Rev. 01 — 01 March 2002 TDA8944AJ ON MODE SVR GC SGND V CC 1000 F GND MGW607 is 4.5 K/W. th(j-mb) is ignored. th(mb-h) © Koninklijke Philips Electronics N.V. 2002. All rights reserved. ...
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... This allows for the use of a smaller heatsink 100 C th(tot) = 100/(0 K 4.5 = 20.5 K/W. th(tot) th(j-mb) j(max kHz and 13. Rev. 01 — 01 March 2002 TDA8944AJ should be reduced to 125 C. This requires audio pass band kHz; © Koninklijke Philips Electronics N.V. 2002. All rights reserved ...
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... scale ( 20.0 12.2 10 2.54 1.27 5.08 6 19.6 11.8 REFERENCES JEDEC EIAJ Rev. 01 — 01 March 2002 TDA8944AJ D h view B: mounting base side 3.4 12.4 2.4 2.1 0.8 4.3 0.4 0.03 3.1 11.0 1.6 1.8 EUROPEAN ...
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... Product data BTL audio amplifier with DC gain control Suitability of through-hole mount IC packages for dipping and wave soldering methods Soldering method Dipping suitable Rev. 01 — 01 March 2002 TDA8944AJ ). stg(max) Wave [1] suitable © Koninklijke Philips Electronics N.V. 2002. All rights reserved ...
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... Rev. 01 — 01 March 2002 TDA8944AJ Fax: + 24825 © Koninklijke Philips Electronics N.V. 2002. All rights reserved ...
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... Publication thereof does not convey nor imply any license under patent- or other industrial or intellectual property rights. Date of release: 01 March 2002 Document order number: 9397 750 09433 TDA8944AJ BTL audio amplifier with DC gain control ...