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Summary of Contents for Microsemi LX1792
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Page 1: Evaluation Board User Guide
LX1792 Eval CLASS-D AUDIO AMPLIFIER EVALUATION BOARD USER GUIDE I N T E G R AT E D P R O D U C T S Powe r Ma na ge men t Copyright © 2002 Rev 0.3, 3/4/2002... - Page 2 LX1792 E VALUATION OARD UIDE ABLE ONTENTS LX1792 Evaluation Board Features and Circuit Description ............2 Input Select Gain Set Impedance Select Output Select Filter Stage Breadboard Quick Start Guide ..........................4 Evaluation Board Schematic ......................6 Bill of Materials ..........................7 Microsemi Page 2 Copyright ©...
- Page 3 LX1792 output to either a spectrum analyzer or an oscilloscope. Gain in the LX1792 amplifier can be set to a Breadboard space is also provided on the evaluation maximum total gain of 40dB. The preamp gain is board to offer the user the opportunity to attach a set by the ratio of the external resistors (R2/R1).
- Page 4 UIDE if the user wants to connect the amplifier to a READBOARD custom load on the breadboard. The LX1792 gives the user the option of connecting the amplifier to a custom filter and load. The ILTER TAGE differential output of the LX1792 is wired directly If the single-ended output is chosen, the amplifier to the breadboard.
- Page 5 Class-D Amplifier. To begin evaluation ended signal. The single-ended signal is of the LX1792, just follow these simple steps. then low-pass filtered with a cutoff frequency of 20kHz. The output of the...
- Page 6 Gain Setting adjust volume to desired level. 50mVrms 20dB 25mVrms 26dB 13) Listen 13mVrms 32dB If the LX1792 is not operating properly, 6mVrms 38dB verify the preceding steps or contact Microsemi MicroPower technical 12) Audio Source assistance (760) 431-5490. Verify that a low level audio source is...
- Page 7 LX1792 E VALUATION OARD UIDE CHEMATIC Out M Breadboard Out P Single Ended Output OUT BNC Selector Single Ended Headphone Unloaded Impedence Select Headphone U1 LX1790 Banana Banana Input Select Figure 1 – Evaluation Board Schematic Microsemi Page 7 Copyright © 2002 Integrated Products –...
- Page 8 LX1792 E VALUATION OARD UIDE ATERIALS M I S C E L L A N E O U S C O M P O N E N T S M I S C E L L A N E O U S C O M P O N...
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