TA0103A Tripath Technology Inc., TA0103A Datasheet
TA0103A
Related parts for TA0103A
TA0103A Summary of contents
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... TA0103A Stereo 250W (4:) Class-T Digital Audio Amplifier Driver using Digital Power Processing (DPP ’ ...
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Absolute Maximum Ratings SYMBOL PARAMETER Vs Supply Voltage (Vspos & Vsneg) V5 Positive 5 V Bias Supply VN12 Reference Voltage: Nominal +12V referenced to Vsneg T Storage Temperature Range STORE T Operating Free-air Temperature Range A Notes: Absolute Maximum Ratings ...
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Performance Characteristics – Single Ended +54V Unless otherwise specified 1kHz, Measurement Bandwidth = 22kHz. T See Notes 1 & 2 for Operating Conditions and Test/Application Circuit Setup. SYMBOL PARAMETER P Output Pow er OUT (Continuous Average/Channel) ...
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Pin Description Pin Function 1 AGND 2 OVERLOADB MUTE 5, 6 IN2, IN1 7, 8 BBM0, BBM1 9, 12 GNDKELVIN1, GNDKELVIN2 10, 11 OCR2, OCR1 13, 14 OCS1L+, OCS1L- 15, 16 OCS1H-, OCS1H+ 17, 30 LO1COM, LO2COM ...
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... 0 Not Connected (Must Be Left Floating) Note - Heavy Lines Indicate High-Current Paths TA0103A 18 FDBKN1 16 OCS1H+ 15 OCS1H HO1 R ...
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Typical Performance +54V THD+N versus Output Power 10 20Hz - 22kHz 1kHz 5 BBM = 65nS Vs = +/-54V Av = 20. STW38NB20 MOSFET 1 0.5 0.2 0.1 0.05 0.02 0.01 1 ...
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Typical Performance +45V THD+N vs Output Power 10 20Hz - 22kHz 1kHz BBM = 65nS V = +/-45V 20.75 ST STW38NB20 MOSFET 1 0.5 0.2 0.1 0.05 0.02 0.01 ...
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Typical Performance THD+N versus Output Power versus Supply Voltage 20Hz - 22kHz 1kHz BBM = 65nS Av = 20.75 ST STW38NB20 MOSFET 1 36V 0.1 0. Output Power (W) Intermodulation ...
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... Functional Description TA0103A Amplifier Operation Figure simplified diagram of one channel (channel TA0103A amplifier to assist in understanding its operation. TA0103A Over-current 4 MUTE Processing R IN IN1 6 & Modulation BBM0 8 BBM1 Over-current OCR1 11 R OCR1 Over/Under Voltage Gnd 1 Figure 3: Simplified TA0103A Amplifier The audio input signal (IN1) is fed to the processor internal to the TA0103A, where a modulation pattern is generated ...
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... An over-current condition will cause the TA0103A to shut off the output stages of the amplifiers and supply a logic level high on HMUTE. The occurrence of an over-current condition is latched in the TA0103A and can be cleared by toggling the MUTE input or cycling power. Overload When logic low, the OVERLOADB pin indicates that the level of the input signal has overloaded the amplifier and that the audio output signal is starting to distort ...
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... Tripath recommends that any offsets during operation be nulled out of the amplifier with a circuit like the one shown connected to IN1 and IN2 in the Test/Application Circuit. It should be noted that the DC voltage on the output of a TA0103A amplifier with no load in mute mode is approximately 2.5V. This offset does not need to be nulled. The output impedance of the amplifier in mute mode is approximately 10 KOhms ...
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... Note that the two channels of a TA0103A amplifier can be used to provide a single, bridged amplifier of almost four times the output power of one of the single-ended amplifier channels. To configure a bridged amplifier, the input to one TA0103A channel must be the inverted signal of the input to the other channel. ...
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... Output Transistor Selection The key parameters to consider when selecting a MOSFET to use with the TA0103A are drain- source breakdown voltage (BVdss), gate charge (Qg), and on-resistance (R The BVdss rating of the MOSFET needs to be selected to accommodate the voltage swing between V and V as well as any voltage peaks caused by voltage ringing due to switching transients ...
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... BBM1 are logic inputs (connected to logic high or pulled down to logic low) that control the break- before-make timing of the output transistors according to the following table. Note that if either BBM0 or BBM1 are left floating, they are pulled to a logic low level internal to the TA0103A ...
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... TA0103A. Circuit Board Layout Considerable care needs to be taken in the layout of the circuit board for a TA0103A amplifier. The high currents flowing through PCB traces and the inductive effects due to the switching frequencies involved can cause large overshoot and undershoot voltages if care is not taken. A general rule to follow is to keep the PCB trace of each signal path to/from each lead of each output MOSFET as short as physically possible ...
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... Efficiency Of A TA0103A Amplifier The efficiency amplifier is OUT IN The power dissipation of a TA0103A amplifier is primarily determined by the on resistance, R the output transistors used, and the switching losses of these transistors, P amplifier, P (per channel) is approximated by ...
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Technical Documentation Please refer to the Tripath “Application Notes” section on our web page (http://www.tripath.com/html/tech.htm#appnotes) for more information regarding evaluation, test and design of Class-T amplifiers. Package Information 38 Pin Quad Module 180mil. (4.6mm) 180mil. (4.6mm) 485mil. (12.3mm ...
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... Tripath Technology Inc. reserves the right to make changes without further notice to any products herein to improve reliability, function or design. Tripath does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights, nor the rights of others. TRIPATH’ ...