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Feature Highlights

1-2

Introduction

1.1

Feature Highlights

The TI TPA0162 audio amplifier evaluation module and the TI plug-n-play
audio amplifier evaluation platform include the following features:

TPA0162 Stereo 2-W Audio Power Amplifier Evaluation Module

Internal depop circuitry to minimize transients in outputs

Powers up at mute volume level to avoid pop

Dual channel, bridge-tied load (BTL) or single-ended operation

2 W per channel output power into 3

Ω

at 5 V, BTL

Low current consumption in shutdown mode (150

Internal input MUX selects among two sets of stereo inputs

Digital volume control from +20 dB to –40 dB

Microprocessor mode volume control

Differential stereo inputs

PC Beep input

Quick and Easy Configuration With The TI Plug-N-Play Audio Amplifier
Evaluation Platform

Evaluation module is designed to simply plug into the platform,
automatically making all signal, control, and power connections

Platform provides flexible power options

Jumpers on the platform select power and module control options

Switches on the platform route signals

Platform provides quick and easy audio input and output connections

Platform Power Options

External 5-V – 15-V DC V

supply inputs

External regulated V

supply input

Socket for on-board 5 V/3.3 V V

voltage regulator EVM

On-board overvoltage and reverse polarity power protection

Platform Audio Input and Output Connections

Left and right RCA phono jack inputs

Miniature stereo phone jack input

Left and right RCA phono jack outputs

Left and right compression speaker terminal outputs

Miniature stereo headphone jack output

Содержание TPA0162

Страница 1: ...TPA0162 Audio Power Amplifier Evaluation Module August 1999 Mixed Signal Products User s Guide SLOU047...

Страница 2: ...ONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH PERSONAL INJURY OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE CRITICAL APPLICATIONS TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED AUTHORIZED OR WARRANT...

Страница 3: ...s 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 devic...

Страница 4: ...iv...

Страница 5: ...Inputs and Gain 3 5 3 2 3 Differential Input 3 7 3 2 4 Depop Circuitry 3 7 3 2 5 BTL Operation 3 7 3 2 6 Single Ended Operation 3 7 3 3 Using The TPA0162 EVM With the Plug N Play Evaluation Platform 3...

Страница 6: ...7 Mute Mode and Polarity Control 3 13 3 8 Typical Headphone Plug 3 16 3 9 TPA0162 EVM Connected for Stereo BTL Output 3 17 3 10 TPA0162 EVM Connected for Stereo Single Ended Output 3 18 Tables 2 1 Ty...

Страница 7: ...TPA0162 audio amplifier evaluation module SLOP210 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...

Страница 8: ...Quick and Easy Configuration With The TI Plug N Play Audio Amplifier Evaluation Platform J Evaluation module is designed to simply plug into the platform automatically making all signal control and p...

Страница 9: ...TI plug n play audio amplifier evaluation platform or to be wired directly into existing circuits and equipment when used stand alone The platform has room for a single TPA0162 evaluation module and i...

Страница 10: ...1 4 Introduction...

Страница 11: ...witch and jumper settings shown in Table 2 1 are typical for the TPA0162 EVM and will cause the TPA0162 to switch to single ended output mode when a plug is inserted into platform headphone jack J10 T...

Страница 12: ...or both may result Figure 2 1 Quick Start Platform Map Signal Conditioning CAUTION Do not insert or remove EVM boards with power applied ICC JP4 F1 VR1 R1 JP3 JP2 JP1 AC DC J2 VCC J1 D1 D2 D3 D4 J2 J...

Страница 13: ...e headphone Jack J10 output will be used set headphone source switch S3 to U2 U4 Table 2 3 Platform Jumper and Switch Settings for the TPA0162 EVM JP6 JP7 JP8 S2 S3 P N P Platform Mode X Hi Note 2 U2...

Страница 14: ...plifier IC between single ended SE and bridge tied load BTL output modes set output mode jumper J1 to OFF To keep the module amplifier IC in the single ended output mode regardless of the control inpu...

Страница 15: ...N J4 J3 R2 J2 Power supply 1 Ensure that all external power sources are set to OFF 2 Connect an external regulated power supply set to 5 V to the module VDD and GND pins taking care to observe marked...

Страница 16: ...omes out of shutdown the volume is set at the 85 dB level Press the UP pushbutton S2 until the desired volume level is reached Control Inputs 8 Connect control lines to the various module control inpu...

Страница 17: ...on information and a parts list for the TPA0162 evaluation module Topic Page 3 1 Precautions 3 2 3 2 The TPA0162 Audio Power Amplifier Evaluation Module 3 3 3 3 Using the TPA0162 EVM With the Plug N P...

Страница 18: ...or both may result Figure 3 1 The TI Plug N Play Audio Amplifier Evaluation Platform Signal Conditioning CAUTION Do not insert or remove EVM boards with power applied ICC JP4 F1 VR1 R1 JP3 JP2 JP1 AC...

Страница 19: ...o circuits or equipment The module has single in line header connector pins mounted to the under side of the board These pins allow the module to be plugged into the TI platform which automatically ma...

Страница 20: ...SOP thermal surface mount package and has been designed to operate from low supply voltages between approximately 4 5 V and 5 5 V Typical applications include portable computers and multimedia systems...

Страница 21: ...s If using separate line and headphone inputs R IN and L IN should be AC grounded through a capacitor If using differential inputs line and headphone inputs must be the same A third input PC BEEP is c...

Страница 22: ...5 dB or mute Each time a button is pressed the volume changes by one increment If a button is held in the depressed position the volume changes by one increment every four clock cycles followed by a s...

Страница 23: ...r off or shutdown to normal operation or when transitioning between the SE and BTL modes 3 2 5 BTL Operation To operate in the bridge tied load output mode the module SE BTL control input terminal mus...

Страница 24: ...e proper orientation Evaluation modules are easily removed from the platform by simply prying them up and lifting them out of their sockets Care must be taken however to prevent bending the pins 3 3 1...

Страница 25: ...n typical applications some or all of the jumper functions are controlled by the system microcontroller or external logic Figure 3 5 TPA0162 EVM Jumpers and Switches R3 100 k C13 10 F GND GND RLINEIN...

Страница 26: ...l volume control when the jumper J2 is set to ON However the amplifier may be controlled by an external microprocessor clock at a speed of up to 45 kHz when the jumper J2 is set to OFF and the externa...

Страница 27: ...ock cycles the volume will increment by one step followed by a short delay This delay will decrease the longer the line is held low eventually reaching a delay of zero 3 3 2 8 CLK IN Signal Input Pin...

Страница 28: ...ifier in socket U5 or the signal from the TPA0162 power amplifier installed in socket U2 as determined by the setting of headphone source select switch S3 When S3 is set to the power amplifier positio...

Страница 29: ...mplifier IC between the bridge tied load BTL output mode and the single ended SE output mode When the mode control input is tied to GND the module operates in the BTL output mode When this input is ti...

Страница 30: ...n jumper header JP8 on the platform selects the control signal polarity by connecting either the active high or the active low line from the headphone jack to jumper JP6 When JP6 is set to Mute use th...

Страница 31: ...full power output peak current draw can be as high as 1 A Any power supply connected to the platform should be capable of providing 1 A of current to avoid clipping of the output signal during peaks...

Страница 32: ...ght RCA phono jacks J7 and J9 left and right pairs of compression connectors for stripped speaker wires J8 and optionally through a miniature 1 8 stereo phone jack J10 for headphones The audio output...

Страница 33: ...the pullup resistor on the module 100 k 3 4 1 TPA0162 EVM Connected for BTL Output Figure 3 9 TPA0162 EVM Connected for Stereo BTL Output Audio Input Right Audio Input Left External Shut Down Control...

Страница 34: ...io Input Left 5 V GND ROUT ROUT SE BTL S1 SHUTDOWN GND LOUT LOUT C11 C2 C13 VDD GND L IN GND L LINE L HP VDD GND R HP R LINE GND R IN C10 SLOP210 U1 TEXAS INSTRUMENTS R4 R1 PC BEEP UP C1 C12 C5 C4 J1...

Страница 35: ...47 nF 80 20 nonpolarized 0805 1 C10 C13 Capacitor 10 F 6 3 V A 2 Panasonic ECS TOJY106R Digi Key PCS1106CT ND R1 R2 R3 R4 Resistor 100 k 1 8 W 5 0805 4 Panasonic ERJ 6GEYJ104V Digi Key P100KABK ND S1...

Страница 36: ...3 20 Details...

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