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Summary of Contents for Texas Instruments TAS5101SE
- Page 1 TAS5101SE Evaluation Module User’s Guide October 2002 DAC Digital Audio/Speaker SLEA006...
- Page 2 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.
- Page 3 EVM IMPORTANT NOTICE Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation kit being sold by TI is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY and is not considered by TI to be fit for commercial use. As such, the goods being provided may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including product safety measures typically found in the end product incorporating the goods.
- Page 4 EVM schematic located in the EVM User’s Guide. When placing measurement probes near these devices during operation, please be aware that these devices may be very warm to the touch. Mailing Address: Texas Instruments Post Office Box 655303 Dallas, Texas 75265 Copyright 2002, Texas Instruments Incorporated...
- Page 5 Preface Read This First About This Manual This application report describes the operation of the TAS5101SE EVM. For proper operation, the TAS5101SE EVM requires an accessory card, DAV-EQ102, to provide analog or S/PDIF inputs, volume control, and equalization functions. The DAV-EQ102 volume and equalization are handled by an onboard TAS3103.
- Page 6 Trademarks tested for compliance with the limits of computing devices pursuant to subpart J of part 15 of FCC rules, which are designed to provide reasonable protection against radio frequency interference. Operation of this equipment in other environments may cause interference with radio communications, in which case the user at his own expense will be required to take whatever measures may be required to correct this interference.
- Page 7 Contents 7) Press the ON button on the controller (near the J4 connector) to enable the output. 8) Play audio. Power Off 1) Stop the audio. 2) Press the button on the controller board to mute the output. 3) Turn off the 26.5-V dc power supply. 4) Turn off the 8-V dc power supply.
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Page 9: Table Of Contents
Contents TAS5101SE EVM Input Description .......... - Page 10 ......... . TAS5101SE EVM Performance Synopsis .
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Page 11: Tas5101Se Evm Input Description
This chapter describes the digital inputs to the TAS5101SE EVM. 1.1 Description of Data Inputs The input to the TAS5101SE evaluation module (EVM) is a 22-pin connector (J1) with 0.1” pin spacing. It contains the digital audio input port (I... -
Page 12: Description Of Power Inputs
Description of Power Inputs 1.2 Description of Power Inputs A 2-pin connector, J4, is placed between the speaker output connectors. It is the power input connector (PVDD connector). Figure 1–1. Connector Diagram TAS5101SE EVM... -
Page 13: Description Of Outputs
Two 2-pin connectors, J2 and J3, are placed on either side of the power input connector (PVDD connector). They are the speaker output connectors. Connect the speakers/load resistors as shown in Figure 2–1. Figure 2–1. TAS5101SE EVM Output Connectors TAS5101SE EVM Table 2–1. Left Speaker Output (J2) -
Page 15: Powering The Tas5101Se Evm
Chapter 3 Powering the TAS5101SE EVM 3.1 Power Supplies The system requires two power supplies, PVDD and DVDD. PVDD is the power for the output stage and is generally 12 V to 27 V dc. It should be capable of supplying at least 2 A to allow adequate margin for full power operation under the various speaker impedances from 4 Ω... -
Page 16: Power Supply Connection
Figure 3–1. Power Supply Connections 3.3 V 12 V to 27 V TAS5101SE EVM With the power supplies turned off: 1) Connect the source of PVDD to J4. Pin 2 is positive. 2) Connect the source of DVDD to J1. Pins 4 and 6 are positive. -
Page 17: Digital Audio Input/Interface
Chapter 4 Digital Audio Input/Interface The TAS5101SE EVM supports many common digital audio input formats. Connect a source of digital audio (I S, unless the board has been reconfigured for another format) to J1, as shown in Figure 4–1. Figure 4–1. Digital Audio Input Connection (J1) -
Page 18: Changing The Audio Input Format
4.1 Changing the Audio Input Format The bottom of the board contains a grouping of R0603 resistor pads that determine the audio input format. The TAS5101SE EVM is shipped configured for I S format. To change the format, move/replace the resistors as described in Table 4–1. -
Page 19: Dbspd (Double Speed)
Power-On Sequence 4.3.4 DBSPD (Double Speed) A logic high on J1 pin 16 signals the TAS5010 modulator that a sampling frequency in excess of 96 kHz is being used. 4.3.5 MUTE A logic low on J1 pin 18 signals the TAS5010 modulator to mute. 4.4 Power-On Sequence 1) Ensure that the RESET_5K input is low. -
Page 21: Technical Description
TAS5101SE EVM. See the schematics in Appendix A for reference. 5.1 Audio Input Section Digital audio input is applied to the TAS5101SE EVM through J1. The standard signals, MCLK, SCLK, LRCLK, and SDIN are connected to the TAS5010 (U1). The digital audio modes, left-justified, right-justified, and I S are set by resistor jumper options on the bottom of the PCB. -
Page 22: Power Supplies
5.3 Power Supplies The TAS5101SE EVM requires two power supply voltages, a 3.3-V logic supply (DVDD) and a PVDD output power supply (18 V to 27 V). A 12-V to 27-V power supply is applied to all of the points in the circuit above labeled PVDD. -
Page 23: Power-On/-Off Depop Circuit
Power-On/-Off Depop Circuit undershoot. Then change the values of the snubber resistors and capacitors to reduce the overshoot and undershoot. Resistor values can vary between 0.5 Ω and 2.7 Ω. Resistors should be of the MELF or mini-MELF type. Capacitor values can vary between 0.1 µF and 0.27µF. Caution should be exercised when tuning the snubber network, because device reliability can be affected (see SLAA117 for details). -
Page 24: Calculating Low-Frequency Response
Calculating Low-Frequency Response When valid audio data is received by the TAS5010, the signal VALID goes high. This action sets HiZ and Pin 14, RESET_MUTE high. The TAS5101 begins to modulate its output. After valid audio clocks are removed from the TAS5010 VALID goes low. This operation immediately asserts HiZ low and RESET low. -
Page 25: Printed-Circuit Board Layout
Printed-Circuit Board Layout As with any high-performance device operating at high frequency, PCB layout is extremely important. The TAS5101SE EVM PCB is fabricated from two-layer, 0.062” FR4 glass epoxy material with 2-oz. copper foil. It is 1.9” by 3.9”. Care has been taken to pour copper around all traces and good design practices have been used for trace layout. -
Page 26: Pcb Bottom Layer
PCB Bottom Layer 6.2 PCB Bottom Layer This is a view of the bottom of the TAS5101SE EVM as one would see it by looking through the top of the board. This view is presented to allow the top and bottom layers to be placed on top of each other and the pads aligned. -
Page 27: Schematics
Chapter 7 Schematics 7.1 Signal Block Diagram Audio Input Demodulator PWM L Filter L_Output TAS5010 Control TAS5101 PWM R Demodulator Filter R_Output POWERDOWN Reset Valid Start-Up Output Splitter Circuit RESET 7.2 Power Block Diagram PVDD DVDD DVDD DVDD PVDD PWM L TAS5010 TAS5101 PWM R... -
Page 28: Audio Input Schematic
Audio Input Schematic 7.3 Audio Input Schematic... -
Page 29: Audio Output Schematic
Audio Output Schematic 7.4 Audio Output Schematic Schematics... -
Page 30: Output Splitter Schematic
Output Splitter Schematic 7.5 Output Splitter Schematic... -
Page 31: Pcb Component Placement
Chapter 8 PCB Component Placement 8.1 Top Layer Figure 8–1. Top Layer Component Placement PCB Component Placement... -
Page 32: Bottom Layer Component Placement
Bottom Layer Component Placement 8.2 Bottom Layer Component Placement Figure 8–2. Bottom Layer Component Placement... -
Page 33: Tas5101Se Evm Performance Synopsis
Chapter 9 TAS5101SE EVM Performance Synopsis Table 9–1. Performance Synopsis Parameter Test Conditions Typical Value Units Power output 4 W at 26.5 V, < 0.1% distortion W rms Frequency response –3 dB 40 to 20,000 15 W, 1000 Hz, 4 Ω... -
Page 35: Amplifier Performance Tests
The right and left audio output channels had 4-Ω load resistors. The TAS5101SE EVM was powered at 26.5 V by a Hewlett-Packard laboratory power supply. The digital input was driven from the audio measurement system through a... -
Page 36: Frequency Response
Frequency Response A.1 Frequency Response... -
Page 37: Thd+N Vs Power
A.2 THD+N vs Power The input signal was 1000 Hz. Because a 4-Ω load resistor was used, the maximum power output was about 15 W rms. The TAS5101SE EVM can drive a 4-Ω load, with minimal performance degradation, and provide an output power of greater than 15 W with less than 0.1% distortion. -
Page 38: Thd+N Vs Frequency
THD+N vs Frequency A.3 THD+N vs Frequency This test was run at three power levels, 1 W, 5 W, and 15 W (full power). The load resistance was 4 Ω. Because the output is ac coupled, the distortion is a little high at the low frequencies. - Page 39 THD+N vs Frequency Amplifier Performance Tests...
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Page 40: Dynamic Range
Dynamic Range A.4 Dynamic Range Low frequency noise is seen because the amplifier is ac-coupled. A 1000 Hz, –60 dB input signal was used. -
Page 41: Fft-10 Watts
FFT—10 Watts A.5 FFT—10 Watts This test was performed at 10 W power into a 4-Ω load. The power supply volt- age was 26.5 V. A full-scale, 1000-Hz input signal was used. Amplifier Performance Tests... -
Page 42: Fft-Signal To Noise
This test was executed from 10 Hz to 85 KHz with no filtering enabled on the audio measurement system so that the complete noise floor could be ob- served. No input signal was applied. Texas Instruments, Inc. TAS5101SE Signal to Noise, FFT no signal: Left Channel 06/11/02 16:02:31 –10 –20 –30... -
Page 43: Crosstalk
It can easily be improved by increasing the size of the capacitors in the output pseudo-differential circuit (output splitter). If further improvement is required, using a separate splitter for each channel further increases the crosstalk isolation. Texas Instruments, Inc. TAS5101SE CrossTalk Left into Right @ 2W. 06/11/02 16:04:23 –5 –10 –15 –20... - Page 44 Crosstalk Texas Instruments, Inc. TAS5101SE CrossTalk Right into Left @ 2W. 06/11/02 16:04:52 –5 –10 –15 –20 –25 –30 –35 –40 –45 –50 –55 –60 Frequency (Hz) EVM Serial Number W101. A-10...
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Page 45: Short-Circuit Tests
Extensive short-circuit testing was performed both with sine wave input and a 3/4-scale dc level. Over 1000 short circuit tests were performed on each of five different TAS5101SE EVMs, both with closed-loop control resetting the amplifier while the short circuit was applied and without closed loop control. - Page 46 A-12...
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Page 47: Bill Of Materials (Bom)
Appendix B Bill of Materials (BOM) Bill of Materials (BOM) -
Page 48: Bill Of Materials For Tas5101Evm
B.1 Bill of Materials for TAS5101EVM TI-SEMICONDUCTORS ITEM Description Ref. MFG. Mfg:Part No. Vendor Vendor Part No. Alternate Part No. Designators Digital audio PWM processor Texas TAS5010PFBR Digi-Key TAS5010PFBR No alternate part number Instruments 30-W digital amp power stage Texas TAS5101DAP Texas TAS5101DAP... - Page 49 CAP 10-µF 16-V ALUM ELEC Panasonic ECE-V1CS100SR Digi-Key PCE3061TR PCE3061CT SM-VSA CAP 470-µF 35-V ALUM C3, C5 Panasonic ECA-1VM471 Digi-Key P10386TB P5168 ELEC M-series RESISTORS ITEM Description Ref. Mfg:Part No. Vendor Vendor Part No. Alternate Part No. Designators RES 0.0-? 1/16-W 5% SMD R1B, R2B, R3B Panasonic ERJ-3GEY0R00V...
- Page 50 INDUCTORS ITEM Description Ref. Mfg:Part No. Vendor Vendor Part No. Alternate Part No. Designators Inductor, 10-uH 6-A L1, L2 TOKIN SBPSC-11R310-100A TOKIN SBPSC-11R310-100A No alternate part number JACK, HEADERS AND CONNECTORS ITEM Description Ref. Mfg:Part No. Vendor Vendor Part No. Alternate Part No.
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