Texas-instruments TAS5026REF User Manual

TAS5026REFReference Design for the TAS5026 Digital AudioPWM ProcessorApril 2003 Digital Audio/ApplicationUser’s GuideSLEU035

1-2The TAS5026 has six independent volume controls with soft volume and mute.The TAS5026 supports bridged output configurations. The device operates i

1-31.2 PCB Key MapThe physical structure for the TAS5026REF is illustrated in Figure 1–2.Figure 1–2. Physical Structure for the TAS5026REF (Rough Outl

1-4

2-1 System InterfacesThis chapter describes the TAS5026REF system interfaces.Topic Page2.1 Digital Audio Interface (J160) 2-2. . . . . . . . . . . . .

2-22.1 Digital Audio Interface (J160)The digital audio interface contains digital audio signal data (I2S), clocks, etc.See the TAS5026 data manual, SL

2-32.2 Control Interface (J100)The control interface connects the TAS5026 board to the microcontrollersection.Table 2–3.Control Interface Pin Connecti

2-4Table 2–3. Control Interface Pin Connections (Continued)Pin No. Net Name Description19 DEM-SEL1 De-emphasis filter select bit 120 SD–E1 Shutdown er

2-52.3 PWM Interface (J140)The PWM interface connects the TAS5026REF board to the output stagemodule.Figure 2–1. Pin Numbers at PWM Interface (J140)23

2-6Table 2–4. J100 Pin Description (Continued)Pin No. Net Name Description28 PWM–AM–5 Channel 5 PWM input (differential –) – positive H-bridge side29

3-1 Schematic, Parts List, PCB Specification, andPCB LayoutThe chapter contains the schematic, parts list, PCB specification, and PCBlayout for the TA

IMPORTANT NOTICETexas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications,enhancements, improvemen

TIDIGITAL AUDIO GROUPALL RIGHTS RESERVED - PATENTS PENDINGTEXAS INSTRUMENTS INCORPORATEDTIDIGITAL AUDIO GROUPALL RIGHTS RESERVED - PATENTS PENDINGTEXA

TIDIGITAL AUDIO GROUPALL RIGHTS RESERVED - PATENTS PENDINGTEXAS INSTRUMENTS INCORPORATEDTIDIGITAL AUDIO GROUPALL RIGHTS RESERVED - PATENTS PENDINGTEXA

TIDIGITAL AUDIO GROUPALL RIGHTS RESERVED - PATENTS PENDINGTEXAS INSTRUMENTS INCORPORATEDTIDIGITAL AUDIO GROUPALL RIGHTS RESERVED - PATENTS PENDINGTEXA

Ref Des Part Number Description Housing Manufacturer Manufacturer Part NumberC100 200041060 10 uF 16 V 20% LYT LY4x5SMD Panasonic ECE V 1C A 100 SRC14

Ref Des Part Number Description Housing Manufacturer Manufacturer Part NumberR105 100210020 10 kohm 5% 200 ppm 100 mW metalfilm 0603 BC Components DCT

Ref Des Part Number Description Housing Manufacturer Manufacturer Part NumberSHUNT120 700110210 Black 2,54 mm shunt Molex 15-29-1024SHUNT121 700110210

TI TAS5026REF PCB SPECIFICATION TAS5026REF PCB SPECIFICATION BOARD I

EVM IMPORTANT NOTICETexas Instruments (TI) provides the enclosed product(s) under the following conditions:This evaluation kit being sold by TI is int

EVM WARNINGS AND RESTRICTIONSIt is important to operate this EVM within the specified input and output ranges described inthe EVM User’s Guide.Exceedi

Information About Cautions and Warningsiii PrefaceRead This FirstAbout This ManualThis manual describes the TAS5026REF reference design from Texas In

Related Documentation From Texas InstrumentsivRelated Documentation From Texas InstrumentsThe following is a list of data manual that have detailed de

Contentsv Contents1 Introduction 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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1-1 IntroductionThe true digital audio amplifiers (TDAA) system consists of a PCM-PWMmodulator device and a PWM power output device. The PCM-PWM proce