TA1101B Tripath Technology Inc., TA1101B Datasheet

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TA1101B

Manufacturer Part Number
TA1101B
Description
Stereo 10W (4om) class-T digital audio amplifier using digital power processing technology
Manufacturer
Tripath Technology Inc.
Datasheet

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Typical Performance
0.05
0.02
0.01
T E C H N I C A L I N F O R M A T I O N
Stereo 10W (4 ) Class-T™ Digital Audio Amplifier using
Digital Power Processing™ Technology
September 2000
General Description
The TA1101B is a 10W continuous average two-channel Class-T Digital Audio Power
Amplifier IC using Tripath’s proprietary Digital Power Processing™ technology. Class-T
amplifiers offer both the audio fidelity of Class-AB and the power efficiency of Class-D
amplifiers.
TA1101B, Rev. 2.2, 08.17.00
Applications
!"Computer/PC Multimedia
!"DVD Players
!"Cable Set-Top Products
!"Televisions
!"Video CD Players
!"Battery Powered Systems
Benefits
!"Fully integrated solution with FETs
!"Easier to design-in than Class-D
!"Reduced system cost with no heat sink
!"Dramatically improves efficiency versus
!"Signal fidelity equal to high quality linear
!"High dynamic range compatible with digital
0.5
0.2
0.1
10
5
2
1
500m
Class-AB
amplifiers
media such as CD, DVD, and Internet audio
VDD = 12V
f = 1kHz
Av = 12
BW = 22Hz - 22kHz
1
THD+N versus Output Power
Output Power (W)
2
R
L
= 8
5
10
R
L
= 4
20
Features
!"Class-T architecture
!"Single Supply Operation
!"“Audiophile” Quality Sound
!"High Power
!"High Efficiency
!"Dynamic Range = 102 dB
!"Mute and Sleep inputs
!"Turn-on & turn-off pop suppression
!"Over-current protection
!"Over-temperature protection
!"Bridged outputs
!"30-pin Power SOP package
!"0.04% THD+N @ 9W, 4
!"0.18% IHF-IM @ 1W, 4
!"6W @ 8 , 0.1% THD+N
!"11W @ 4 , 0.1% THD+N
!"10W @ 8 , 10% THD+N
!"15W @ 4 , 10% THD+N
!"88% @ 10W, 8
!"81% @ 15W, 4
TA1101B
1

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TA1101B Summary of contents

Page 1

... Digital Power Processing™ Technology September 2000 General Description The TA1101B is a 10W continuous average two-channel Class-T Digital Audio Power Amplifier IC using Tripath’s proprietary Digital Power Processing™ technology. Class-T amplifiers offer both the audio fidelity of Class-AB and the power efficiency of Class-D amplifiers ...

Page 2

... Bandwidth Vripple = 100mV 10W/Channel OUT L No Load, MUTE = Logic Low A-Weighted, input AC grounded Value UNITS -40 to 150 Note 2 W MIN. TYP. MAX. UNITS 8.5 12 13 MIN. TYP. MAX. UNITS 0.04 % 0.18 0 150 mV 3 100 V TA1101B, Rev. 2.2, 08.17.00 ...

Page 3

... Regulated 5VDC source used to supply power to the input section (pins 3 and 8). DCAP2 DCAP1 V5D AGND1 REF OVERLOADB AGND2 V5A VP1 IN1 MUTE VP2 IN2 BIASCAP AGND3 TA1101B, Rev. 2.2, 08.17.00 Description 30-pin Power SOP Package (Top View 5VGEN 2 29 CPUMP 3 28 PGND1 4 27 VDDA ...

Page 4

... Application / Test Circuit 4 TA1101B, Rev. 2.2, 08.17.00 ...

Page 5

... OUTM2 22 D (Pin 18) PGND2 29 CPUMP 1uF 27 VDDA 0.1uF DGND 0.1uF 5VGEN 24 VDD1 C SW 0.1uF 28 PGND1 21 VDD2 C SW 0.1uF 18 PGND2 be connected locally at the TA1101B = 0.22 F for 8 Ohm loads 10uH 0.47uF o 0.47uF (Pin 28 0.1uF 1/2W 0.47uF L o 10uH 10uH 0.47uF 0.47uF (Pin 18) ...

Page 6

... A C Charge pump input capacitor. This capacitor should be connected directly between pins 1 D and 2 and located physically close to the TA1101B. C Charge pump output capacitor that enables efficient high side gate drive for the internal H- P bridges. To maximize performance, this capacitor should be connected directly between pin 29 (CPUMP) and pin 27 (VDDA) ...

Page 7

... Frequency (Hz) THD+N versus Frequency 10 5 VDD = 12V Pout = 5W/Channel 22Hz - 22kHz 1 0.5 0.2 0 0.05 L 0.02 0. 100 200 500 1k Frequency (Hz) TA1101B, Rev. 2.2, 08.17.00 +3 +2.5 VDD = 12V Pout = 1W +2 RLoad = +1 22Hz - 22kHz +1 +0.5 +0 -0.5 VDD = 12V - 1kHz -1.5 THD+N < 10 VDD = 12V ...

Page 8

... VDD pins. This may result in permanent damage or destruction to the TA1101B. The copper slug of the TA1101B must be soldered onto the PC board. This board uses array of 0.013” vias on the copper below the TA1101 that allow the heat to conduct to 4 sq. in. of copper on the bottom side ground plane of the PC board ...

Page 9

... Amplifier Gain The gain of the TA1101B is set by the ratio of two external resistors, R following formula where V is the input signal level and Watts of RMS output power results from an 8.485V RMS signal across then 9 Watts will be achieved with 0.707V RMS of input signal 485 ...

Page 10

... In the above graph Copper Area is the size of the copper pad on the PC board to which the heat slug of the TA1101B is soldered. The heat slug must be soldered to the PCB to increase the maximum power dissipation capability of the TA1101B package. Soldering will minimize the likelihood of an over- temperature fault occurring during continuous heavy load conditions. The vias used for connecting the heatslug to the copper area on the PCB should be 0.013” ...

Page 11

... Tripath amplifier switching pattern will degrade the measurement. One feature of the TA1101B 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 ...

Page 12

... Package Information 30-Lead Power Small Outline Package (PSOP), compliant with JEDEC outline MO-166, variation AD PLACES TOP VIEW SIDE VIEW 12 2. BOTTOM VIEW SEE DETAIL "A" L 1.60 REF DETAIL "A" D1 END VIEW TA1101B, Rev. 2.2, 08.17.00 ...

Page 13

... For more information on Tripath products, visit our web site at: www.tripath.com TRIPATH TECHNOLOGY, INC. 3900 Freedom Circle Santa Clara, California 95054 408-567-3000 TA1101B, Rev. 2.2, 08.17.00 Nom. Max. --- 0.48 --- 0.32 15.90 16 ...

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