TAA2008 Tripath Technology Inc., TAA2008 Datasheet
TAA2008
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TAA2008 Summary of contents
Page 1
... The TAA2008 is a 9W/ch continuous average two-channel Class-T Digital Audio Power Amplifier IC using Tripath’s proprietary Digital Power Processing™ technology. The TAA2008 QFN package, along with extremely high efficiency, allows for a very compact amplifier design ...
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... (Note 1) (Note 4) MIN. 8.5 3.5 PARAMETER Value UNITS 16 V 6.0 V -0.3 to 6.0 V -0.3 to V5+0.3 V -40 to 150 150 qC 2000 V 200 V TYP. MAX. UNITS 12 14 VALUE UNITS 22 qC/W TAA2008 –KLi/1.0/05.06 ...
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... Vripple = 100mVrms, f=1kHz P = 5W/Channel 16: OUT L No Load, MUTE = Logic Low A-Weighted, input AC grounded TYP. MAX. UNITS 8 W 6 14 0.022 % 0.1 0 150 mV 3 100 150 PV TAA2008 –KLi/1.0/05.06 ...
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... A logic high output indicates thermal overload output is shorted to ground, or another output PGND2, PGND1 Power Grounds (high current) 8 DGND Digital Ground. Connect to AGND locally (near the TAA2008). 10, 12; OUTP2 & OUTM2; Bridged output pairs 15, 13 OUTP1 & OUTM1 11, 14 VDD2, VDD1 Supply pins for high current H-bridges, nominally 12VDC ...
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... A ll Diodes are 0.22uF 0.22uF 0.01uF 1/ 0.22uF 0.22uF 0.22uF (Pin 0.01uF 0.22uF 10 1/ (+12V ) + ** 100uF, 16V TAA2008 –KLi/1.0/05. ...
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... C Charge pump input capacitor. This capacitor should be connected directly between D pins 21 (DCAP2) and 22 (DCAP1) and located physically close to the TAA2008. C Charge pump output capacitor that enables efficient high side gate drive for the P internal H-bridges. To maximize performance, this capacitor should be connected directly between pin 19 (CPUMP) and pin 17 (VDDA) ...
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... Total Output Power (W ) Efficiency and Power D issipation versus Total output Power E fficiency 1kH 22H z - 20kH z(AES17 ) Total Output P ower (W ) TAA2008 –KLi/1.0/05.06 VDD =12V VDD =13. z(AES17 ...
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... Output Power versus Supply Voltage = 10 Supply Voltage (V) Maximum S upply C urrent versus S upply V oltage 10% f= 1kH z BW= 22H z - 20kH z(AES17 Supply V oltage (V ) TAA2008 –KLi/1.0/05. 10k 20k ...
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... Since the amplifier must drive the inductive LC output filter and speaker loads, the amplifier outputs can be pulled above the supply voltage and below ground by the energy in the output inductance. To avoid subjecting the TAA2008 to potentially damaging voltage stress critical to have a good printed circuit board layout recommended that Tripath’ ...
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... TAA2008’s VDD1 and VDD2 pins on the opposite side of the PCB as the TAA2008. Vias return the supply trace to the TAA2008 side of the PCB at the VDD1 and VDD2 pins. This arrangement allows C1’s PGND pin to have a low impedance return path to PGND1 and PGND2 through the PCB’ ...
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... If turn-on and/or turn-off noise is still present with a TAA2008 amplifier, the cause may be other circuitry external to the TAA2008 such as an audio processor or preamp. Multiple audio processors used in LCD TV’s create audible pops as their power supply collapses. If the TAA2008 is still active (mute pin is low), then these audible pops will be amplified and output to the speakers. To eliminate this problem, simply activate the mute before the power supply collapses. The delay going into mute is approximately 1us, as compared to several hundred milliseconds on the previous Tripath IC’ ...
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... These methods of trimming the offset voltage are optional and for most cases the additional circuitry is not needed potentiometer can be used at the input of the TAA2008 as shown in the figure below. By changing the input bias voltage the output DC offset voltage can be trimmed. Two separate potentiometers must be used to trim both channels ...
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... Potentiometer 2) In cases where manually trimming potentiometers is not possible, resistors can be used in place of potentiometers. Since each TAA2008 has different offset voltage, the output offset voltage will need to be measured for both channel 1 and channel 2 and then resistors will have to be added on the PC board to trim the offset. Below is a lookup table for resistor values for corresponding offset voltages ...
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... Please contact Tripath sales for additional information on the DC servo circuit The TAA2008 result of high efficiency and good package thermal characteristics, can operate at elevated ambient temperatures without having to derate the output power, assuming 8 ohm output loads or higher. This in stark contrast to many other “ ...
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... A similar set of calculations can be done for a 16 ohm load. But since the efficiency is higher and the output power is lower for a 16 ohm load, as opposed ohm load, the power dissipation will be smaller. Since the TAA2008 is not thermally limited into 8 ohm loads, it will not be thermal limited into 16 ohm loads. ...
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... Tripath amplifiers switching pattern will degrade the measurement. One feature of the TAA2008 is that it does not require large multi-pole filters to achieve excellent performance in listening tests, usually a more critical factor than performance measurements. Though using a multi-pole filter may remove high-frequency noise and improve THD+N type measurements (when they are made with wide-bandwidth measuring equipment), these same filters degrade frequency response ...
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... PIN QFN - 8MM x 8MM X 1MM TAA2008 –KLi/1.0/05.06 ...
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... Orchard Parkway, San Jose, CA 95131 408.750.3000 - P 408.750.3001 - F For more Sales Information, please visit us @ For more Technical Information, please visit www.tripath.com/cont_s.htm www.tripath.com/data.htm TAA2008 –KLi/1.0/05.06 ...