User’s Guide 2001 Mixed-Signal Products SLOU102
IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete.
How to Use This Manual This document contains the following chapters: Chapter 1—Introduction Chapter 2—Operation Information About Cautions and Warnings This book may contain cautions and warnings. This is an example of a caution statement. A caution statement describes a situation that could potentially damage your software or equipment. This is an example of a warning statement. A warning statement describes a situation that could potentially cause harm to you.
Running Title—Attribute Reference FCC Warning This equipment is intended for use in a laboratory test environment only. It generates, uses, and can radiate radio frequency energy and has not been 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.
Running Title—Attribute Reference 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1 Feature Highlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.
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Chapter 1 This chapter provides an overview of the Texas Instruments TPA0252 audio amplifier evaluation module (SLOP333). It includes a list of EVM features, a brief description of the module illustrated with a pictorial diagram, and a list of EVM specifications. Topic Page 1.1 Feature Highlights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–2 1.2 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Feature Highlights 1.
Description 1.2 Description The TPA0252 stereo 2-W audio amplifier evaluation platform is a complete, 2 W per channel stereo audio power amplifier. It consists of the TI TPA0252 stereo 2-W audio power amplifier IC along with a small number of other parts mounted on a circuit board that measures approximately 2 1/4 inches by 1 1/2 inches (see Figure 1–1). Figure 1–1.
1-4 Introduction
Chapter 2 Quick start lists in this chapter contain steps that can be followed to quickly prepare the TI plug-n-play audio amplifier evaluation platform for use with the TPA0252 audio amplifier EVM, or to connect the TPA0252 audio amplifier EVM for stand-alone operation. Using the TPA0252 audio amplifier evaluation module with the TI evaluation platform is a quick and easy way to connect power, signal and control inputs, and signal outputs to the EVM, using standard connectors.
Precautions 2.1 Precautions Power Supply Input Polarity and Maximum Voltage Always ensure that the polarity and voltage of the external power connected to VCC power input connector J1, J2, and/or VDD power input connector J6 are correct. Overvoltage or reverse-polarity power applied to these terminals can open onboard soldered-in fuses and cause other damage to the platform, installed evaluation modules, and/or the power source.
Quick Start List for Platform 2.2 Quick Start List for Platform Use the following steps when using the TPA0252 EVM with the TI plug-n-play audio amplifier evaluation platform (see the platform user’s guide, literature number SLOU011, for additional details). Typical platform switch and jumper settings are shown in Table 2–1 and typical EVM settings are shown in Table 2–2. Numbered callouts for selected steps are shown in Figure 2–1 and Figure 2–2.
Quick Start List for Platform Evaluation module preparations Figure 2–2. Module Preparation GND VDD TP1 HP/LINE R LINE– R IN+ R5 C11 ROUT+ TP2 C12 GND VAUX D1 D2 R4 12 J5 GND HP–SE R HP + C5 C10 C9 C13 PCBEEP J4 C3 C1 J3 CLK J2 DOWN C2 S2 UP U1 C6 R1 L LINE– S1 SHUTDOWN R2 GND TEXAS INSTRUMENTS GND SLOP333 TPA0252 EVM 11 J1 UP C7 L HP SE/BTL S3 DOWN C4 C8 L IN+ ROUT– VDD R3 SHUTDOWN LOUT– GND LOUT+ Table 2–2.
Quick Start List for Stand-Alone 2.3 Quick Start List for Stand-Alone Follow these steps to use the TPA0252 EVM stand-alone or when connecting it into existing circuits or equipment. Connections to the TPA0252 module header pins can be made via individual sockets, wire-wrapping, or soldering to the pins, either on the top or the bottom of the module circuit board. Typical EVM jumper settings are shown in Table 2–3. Numbered callouts for selected steps are shown in Figure 2–3.
Quick Start List for Stand-Alone Evaluation module preparations Figure 2–3. Stand-Alone Module Preparation GND VDD TP1 HP/LINE R LINE– R IN+ R5 C11 ROUT+ TP2 C12 GND VAUX D1 D2 R4 7 J5 GND HP–SE R HP + C5 C10 C9 C13 PCBEEP J4 C3 C1 J3 CLK J2 DOWN C2 S2 UP U1 C6 R1 L LINE– S1 SHUTDOWN R2 GND TEXAS INSTRUMENTS GND SLOP333 TPA0252 EVM 6 J1 UP C7 L HP SE/BTL S3 DOWN C4 C8 L IN+ ROUT– VDD R3 SHUTDOWN LOUT– GND LOUT+ Table 2–3.
Stand-Alone Connection Diagram 2.4 Stand-Alone Connection Diagram Using the TPA0252 audio power amplifier evaluation module stand-alone is much the same as using it with the platform. The same 4.5-V to 5.5-V power supply range and the isolated OUT+ and OUT– lines for BTL operation requirement exists. Note that the source of any control signals applied to the EVM control pins must be able to source or sink the current flowing through the pulldown or pullup resistors on the module (100 kΩ).
Reference 2.5 Reference This section includes the TPA0252 EVM schematic, the EVM parts list, and the module PCB layers. 2.5.1 EVM Schematic Figure 2–5 shows the TPA0252 EVM schematic. Figure 2–5. TPA0252 EVM Schematic ROUT+ HP/LINE TP1 HP–SE J5 RIN+ RLINE– RHP VDD GND LHP C11 C10 C9 C12 10 µF R5 100 kΩ 0.47 µF 0.47 µF 0.47 µF C13 0.47 µF 13 14 HP/LINE 0.47 µF C7 0.47 µF LIN+ 11 RIN PC–BEEP 16 17 PVDD 18 C1 0.47 µF 7 VDD LHPIN BYPASS CLK 6 5 LLINEIN LIN DOWN UP CLK J3 C2 0.
Reference 2.5.2 EVM Parts List Table 2–4 is the TPA0252 EVM parts list. Table 2–4. TPA0252 EVM Parts List Ref. Description Size EVM Qty. Manufacturer/ Part Number Digi-Key Number C1, C2, C14, C4–C11 Capacitor, 0.47 µF, 15 V, +80%/–20%, Y5V 0805 11 Panasonic 2VF1C474Z Digi-Key PCC1847TR–ND C3 Capacitor, 0.
Reference 2.5.3 Module PCB Layers The following illustrations depict the TPA0252 EVM PCB layers and silkscreen. These drawings are not to scale. Gerber plots can be obtained from any TI Sales Office. Figure 2–6. TPA0252 EVM PCB Figure 2–7.
Reference Figure 2–8.
2-12 Operation
