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UM2376
User manual
Evaluation board for TDA7803A and TDA7808 power amplifiers
Introduction
This note provides preliminary information about how to operate the boards offered to evaluate two components in FW27
package: TDA7803A and TDA7808.
This document describes how to use the evaluation board in order to check devices performance; for any other information and
deeper details please refer to the TDA7803A and TDA7808 datasheet (see
Appendix
A).
UM2376 - Rev 2 - August 2020
www.st.com
For further information contact your local STMicroelectronics sales office.
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Table of Contents
Related Manuals for ST EVAL-TDA7803A
Summary of Contents for ST EVAL-TDA7803A
- Page 1 This document describes how to use the evaluation board in order to check devices performance; for any other information and deeper details please refer to the TDA7803A and TDA7808 datasheet (see Appendix UM2376 - Rev 2 - August 2020 www.st.com For further information contact your local STMicroelectronics sales office.
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Page 2: Hardware Description
UM2376 Hardware description Hardware description Board description Figure 1. EVAL-TDA7803A board Top view UM2376 - Rev 2 page 2/14... -
Page 3: Application Circuit
The basic application diagram is shown in Figure 2. A key components description and a suggestion about how to choose the right components, are respectively shown in Table Figure 2. EVAL-TDA7803A application circuit 2200µF 0.22 µF Vcc 1 Vcc 2 V S T-BY... -
Page 4: Board Operation
UM2376 Board operation Board operation Before any operation, please insert the power amplifier in the socket provided with the board. A heat-sink (not provided) has to be used. Please refer to Section 3 Power dissipation/Heat-sink to choose the right heat-sink. A supply voltage (battery voltage or equivalent) on VS-GND connectors, between 6 V and 18 V, is needed to operate the board. -
Page 5: Power Dissipation/Heat-Sink
UM2376 Power dissipation/Heat-sink Power dissipation/Heat-sink The heat-sink size / characteristics largely depend on the operating conditions and consequently power dissipation levels are implied. Dissipation can be higher if sine test tones are used instead of music or audio- simulation signals (e.g. Pink Noise). Considering the standard car-radio conditions (Vs = 14 V, RL = 4 Ω, 4-CH operation), the Pdiss levels implied are as follows (STD mode / SB-I mode @ Tamb = 70 °C , Tj-max = 150 °C): •... -
Page 6: High Frequency Output Waveforms
UM2376 High frequency output waveforms High frequency output waveforms In SB-I mode the speaker signal (OUT-OUT) is the sum of the signals at OUT+ and OUT- pins, which are not sinusoidal (in STD mode they are). Here below it is reported an oscilloscope snapshot, which shows the output waveforms in SB-I mode (@ Po >... -
Page 7: Demo Board Schematic
UM2376 Demo board schematic Demo board schematic Figure 4. EVAL-TDA7803A Demo board schematic UM2376 - Rev 2 page 7/14... -
Page 8: Information On Board Use
This evaluation board/kit is intended to be used for ENGINEERING DEVELOPMENT, DEMONSTRATION OR EVALUATION PURPOSES ONLY and it is not considered by ST Microelectronics (ST) a finished end product fit for general consumer use. People handling the product(s) must have electronics training and observe good engineering practice standards. -
Page 9: Appendix A Reference Documents
UM2376 Reference documents Appendix A Reference documents Table 2. Reference documents Doc Name Title High efficiency digital input automotive quad power amplifier with built-in diagnostics features, 'start stop' DS12195 030745 compatible DS12230 030826 High efficiency digital input automotive quad power amplifier, 'start stop' compatible UM2376 - Rev 2 page 9/14... -
Page 10: Revision History
UM2376 Revision history Table 3. Document revision history Date Version Changes 05-Apr-2018 Initial release. 05-Aug-2020 Removed PSO package. UM2376 - Rev 2 page 10/14... -
Page 11: Table Of Contents
UM2376 Contents Contents Hardware description ............. . 2 Board description . - Page 12 EVAL-TDA7803A components description........
- Page 13 EVAL-TDA7803A Demo board schematic........
- Page 14 ST’s terms and conditions of sale in place at the time of order acknowledgement. Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of Purchasers’...
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