TA2022 Tripath Technology Inc., TA2022 Datasheet
TA2022
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TA2022 Summary of contents
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... The TA2022 is a 90W (4Ω) continuous average per channel Class-T Digital Audio Power Amplifier IC using Tripath’s proprietary Digital Power Processing (DPP both the audio fidelity of Class-AB and the power efficiency of Class-D amplifiers ...
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... (Note 1) -0.3V to (V5+0.3V) (Note 5) MIN. +/- 12 4.5 9 VALUE UNITS 1.0° 20° Value UNITS +/- VNN+13 V -55º to 150º C -40º to 85º C 150º C 4000 V 1500 V 200 V TYP. MAX. UNITS +/-31 +/- 5 C/W C/W TA2022 – KLI/1.2/07-04 ...
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... Under-voltage turn on (muted) -14.8 TYP. MAX. UNITS 0 1 0.5 V 750 162 178 µA 154 µ µA 72 µA 42.8 47.3 V 40.9 V 22.2 24.4 V 20.4 V µA 174 191 169 µ µA 77 µA -42.1 -46.8 V -40.8 V -20.2 -22.6 V -17.9 V TA2022 – KLI/1.2/07-04 ...
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... L 0dB = 150W A-Weighted, input AC grounded (Notes 6, 7) TYP. MAX. UNITS 90 W 100 W 125 0.015 % 0.015 % 0.1 % 102 18.1 V/V 0 4. 150 µV (Notes 6, 7) TYP. MAX. UNITS 150 W 235 W 0. 104 dB 220 µV TA2022 – KLI/1.2/07-04 ...
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... Note 12: The fact that the over-voltage turn on and over-voltage turn off specifications exceed the absolute maximum of +/-40V for the TA2022 does not imply that the part will work at these elevated supply voltages. It also does not imply that TA2022 is tested or guaranteed at these supply voltages. The supply voltages are simply a calculation ...
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... Normally connected to the output of onboard VN10 buck converter. This voltage must be stable and referenced to VNN. Power ground for onboard VN10 generator. Electrically tied to the TA2022 case. Positive power supply input pins. Switching output voltage for onboard VN10 generator (buck converter). ...
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... Analog Ground Power Ground 6.2Ω 0.22uF 4Ω or 8Ω R OFB 10KΩ to FBKGND1 (Pin30) Offset Trim Circuit 6.2Ω 0.22uF 4Ω or 8Ω R OFB 10KΩ to FBKGND2 (Pin28) Offset Trim Circuit TA2022 – KLI/1.2/07-04 ...
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... SW close to pin 2 (VN10) to maximize device performance. The value of the bulk capacitor should be sized appropriately such that the VN10 voltage does not overshoot with respect to VNN during TA2022 turn on. Tripath recommends using a value of 100 F for the bulk capacitor. L VN10 generator filter inductor. This inductor sized appropriately so that L ...
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... VN10 voltage will typically be 11V above VNN. SWFB C Supply decoupling for the power supply pins. For optimum performance, these S components should be located close to the TA2022 and returned to their respective ground as shown in the Application/Test Circuit. R Overvoltage and undervoltage sense resistor for the negative supply (VNN). Please VNNSNESE refer to the Electrical Characteristics Section for the trip points as well as the hysteresis band ...
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... THD+N vs Output Power Output Power (W) THD+N vs Frequency BW = 30kHz BW = 22kHz 50 100 200 500 Frequency (Hz) Intermodulation Distortion 50 100 200 500 Frequency (Hz) TA2022 – KLI/1.2/07-04 50 100 10k 20k 10k 20k ...
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... Efficiency vs Output Power Output Power (W) THD+N vs Output Power +/-30V +/-25V Output Power (W) Channel Separation RL = 4Ω 8Ω 50 100 200 500 Frequency (Hz) TA2022 – KLI/1.2/07- +/-35V 50 100 10k 20k ...
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... THD+N vs Output Power +/-27V +/-23V 100 Output Power (W) Efficiency vs Output Power 100 120 140 160 180 200 Output Power (W) Noise Floor 100 200 500 Frequency (Hz) TA2022 – KLI/1.2/07-04 +/-30V 200 300 220 240 10k 20k ...
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... Please refer to the TA2022 evaluation board document, EB-TA2022, available on the Tripath website, at www.tripath.com. The following components are important to place near their associated TA2022 pins and are ranked in order of layout importance, either for proper device operation or performance considerations. The capacitors C ...
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... Depending on the system design, the single point connection may be in the form of a ferrite bead or a PCB trace. The analog grounds, pin 15 and pin 20 must be connected locally at the TA2022 for proper device functionality. On the TA2022 evaluation board, Tripath has used an analog ground plane to minimize the impedances between pin 15 and pin 20 as well as the other analog ground connections, such as V5 supply bypassing, and feedback divider networks ...
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... VN10 regulator is not being used, VN10GND should still be connected to PGND The gain of the TA2022 is the product of the input stage gain and the modulator gain. Please refer to the sections, Input Stage Design, and Modulator Feedback Design, for a complete explanation of how to determine the external component values ...
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... V5 RF INV1 - + BIASCAP AGND V5 + INV2 - RF AGND OAOUT2 has been determined. C and calculated according to: I and R bias the feedback signal to approximately 2.5V and FBA FBB determine the input low I , FBA TA2022 – KLI/1.2/07-04 ...
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... RFBA RFBA RFBC OUT1 RFBC OUT 1 GROUND RFBB RFBB AGND Ω typically FBA FBB + FBB =36V and VNN =-36V, MAX MAX + Ω 1.13k ) + = 1 18.13V/V TA2022 – KLI/1.2/07-04 ...
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... Mute pin of the TA2022 directly. When the Mute Control signal is high, the Mute pin will be driven low and the TA2022 will be on. If the Mute Control signal is low, the 2k resistor will pull the Mute pin high and the TA2022 will be muted. ...
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... In most applications, the output offset voltage will need to be trimmed via an external circuit (either passive or active). The output offset voltage of the TA2022 can be nulled by modifying the modulator feedback as shown in Figure 4. Potentiometer R the output ground, and therefore the output offset. ROFB limits the trim range. ...
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... servo can also be used to automatically null any offset voltage. The TA2022 evaluation board incorporates a DC servo. Please refer to the TA2022 evaluation board document, EB-TA2022, available on the Tripath website, at www ...
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... A 10A rating is sufficient to ensure that current increases through the inductor are linear, and provides a safety margin for the TA2022. There are two types of inductors available in the 10A range that offers some EMI containment: they are the toroidal type and the bobbin (shielded) type inductor. ...
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... The TA2022 can operate over a wide range of power supply voltages from +/-12V to +/-36V. In order to optimize operation for either the low or high range, the user must select the proper values for ...
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... TA2022. Thus, this circuit should only be used where the VNN power supply is well regulated even under heavy load conditions (including the effects of power supply pumping). ...
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... The TA2022 has built-in over and under voltage protection for both the VPP and VNN supply rails. The nominal operating voltage will typically be chosen as the supply “center point.” This allows the supply voltage to fluctuate, both above and below, the nominal supply voltage ...
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... Thus, the supply voltage must be outside of the user defined supply range for greater than 200mS for the TA2022 to be muted. The equation for calculating R VPPSENSE VPP - 2. VPPSENSE I VPPSENSE The equation for calculating R VNNSENSE 1.25V - VNN = R VNNSENSE I VNNSENSE where VPPSENSE VNNSENSE table for VPPSENSE and VNNSENSE, respectively. Example: Nominal supply voltage – ...
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... Thus, the minimum and maximum values would be “worst case” assuming a supply voltage of 5V for the input section of the TA2022. The entire discussion thus far has been for the “one resistor” sense circuit. This configuration requires a single resistor from either VPPSENSE or VNNSENSE to the respective power supply ...
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... VNN TA2022 RVNN1 18 VNNSENSE VPP RVPP1 19 VPPSENSE is as follows and R can be calculated using the above VPP1 VPP2 VNN1 VNN2 35.75V use 36V = − 35.75V use - 36V Ω kΩ use 261 Ω kΩ use 237 TA2022 – KLI/1.2/07-04 ...
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... The HMUTE output is capable of directly driving an LED through a series 2kΩ resistor most applications it will be necessary to fasten the TA2022 to a heat sink. The determining factor is that the 150°C maximum junction temperature, T following equation ...
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... A θ = junction-to-ambient thermal resistance JA θ = θ + θ + θ Example: What size heat sink is required to operate the TA2022 at 80W per channel continuously in a 70ºC ambient temperature determined by: DISS P η Efficiency = = P P (per channel) = DISS Thus, P for two channels = 31 ...
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... TA2022 – KLI/1.2/07-04 ...
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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 TA2022 – KLI/1.2/07-04 ...