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Schematic, Bill of Materials, and Reference

16

SBOU205 – March 2018

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Copyright © 2018, Texas Instruments Incorporated

INA1620EVM Audio Amplifier Evaluation Module

6

Schematic, Bill of Materials, and Reference

This section contains the schematics, the bill of materials, and a list of reference documents.

6.1

Schematic

illustrates the EVM schematics.

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Содержание INA1620EVM

Страница 1: ...CB layout schematic and bill of materials BOM of the INA1620EVM Contents 1 Introduction 3 2 Performance Specification Summary 3 3 Modifications 3 3 1 Gain 4 3 2 Cutoff Frequency 5 3 3 Phase Shift 5 3...

Страница 2: ...oad 9 7 THD N vs Amplitude for a 16 Load 10 8 FFT of Left Channel With a 32 Load 10 9 FFT of Right Channel With a 32 Load 11 10 FFT of Left Channel With a 16 Load 11 11 FFT of Right Channel With a 16...

Страница 3: ...1 kHz VIN 1 VRMS Load 32 measurement bandwidth 90 kHz 107 8 dB THD N vs at 1 kHz VIN 1 VRMS Load 16 measurement bandwidth 90 kHz 107 1 dB Second Harmonic Left Channel VIN 1 VRMS Load 32 Fin 1 kHz 129...

Страница 4: ...n Equation 1 and Equation 2 display the transfer function of the circuit shown in Figure 1 1 2 When using the internal thin film resistors all resistance values in Equation 1 and Equation 2 are 1 k Th...

Страница 5: ...Resistors For most headphone amplifier applications the internal thin film resistors in the INA1620 are used as shown in Figure 1 However these resistors may be used for other purposes if desired The...

Страница 6: ...output load The THD N vs Frequency THD N vs Amplitude FFT and CMRR vs Frequency measurements were taken using an Audio Precision APx555 All measurements were taken using 15 V supplies at an ambient te...

Страница 7: ...i com Test Setup and Results 7 SBOU205 March 2018 Submit Documentation Feedback Copyright 2018 Texas Instruments Incorporated INA1620EVM Audio Amplifier Evaluation Module Figure 3 Power Supply Connect...

Страница 8: ...test points provide a connection to measure the performance of the two channels with an audio analyzer distortion analyzer or other test equipment 4 4 Enable Jumper J4 provides access to the EN pin on...

Страница 9: ...D N vs Amplitude measurements the output amplitude was swept from 10 mVRMS to 3 VRMS at a frequency of 1 kHz The measurement bandwidth of the Audio Precision was set to 22 kHz Note that driving low im...

Страница 10: ...t 2018 Texas Instruments Incorporated INA1620EVM Audio Amplifier Evaluation Module Figure 7 shows the THD N vs Amplitude for a 16 load Figure 7 THD N vs Amplitude for a 16 Load 4 7 Fast Fourier Transf...

Страница 11: ...st Setup and Results 11 SBOU205 March 2018 Submit Documentation Feedback Copyright 2018 Texas Instruments Incorporated INA1620EVM Audio Amplifier Evaluation Module Figure 9 shows an FFT of the right c...

Страница 12: ...INA1620EVM Audio Amplifier Evaluation Module Figure 11 shows an FFT of the right channel with a 16 load The second harmonic was measured to be 120 68 dBV Figure 11 FFT of Right Channel With a 16 Load...

Страница 13: ...rs C6 and C8 were placed as close as possible to the supply pins of the INA1620 The placement of the remaining passive components was kept as close and symmetrical as possible to minimize loop areas w...

Страница 14: ...Board Layout www ti com 14 SBOU205 March 2018 Submit Documentation Feedback Copyright 2018 Texas Instruments Incorporated INA1620EVM Audio Amplifier Evaluation Module Figure 13 Top Layer PCB Layout...

Страница 15: ...www ti com Board Layout 15 SBOU205 March 2018 Submit Documentation Feedback Copyright 2018 Texas Instruments Incorporated INA1620EVM Audio Amplifier Evaluation Module Figure 14 Bottom Layer PCB Layout...

Страница 16: ...n Feedback Copyright 2018 Texas Instruments Incorporated INA1620EVM Audio Amplifier Evaluation Module 6 Schematic Bill of Materials and Reference This section contains the schematics the bill of mater...

Страница 17: ...hematic Bill of Materials and Reference 17 SBOU205 March 2018 Submit Documentation Feedback Copyright 2018 Texas Instruments Incorporated INA1620EVM Audio Amplifier Evaluation Module Figure 15 INA1620...

Страница 18: ...Header 100mil 3x1 Gold TH 3x1 Header TSW 103 07 G S Samtec J2 1 Audio Jack 3 5mm Stereo R A SMT Audio Jack SMD SJ 3523 SMT CUI Inc J4 1 Header 100mil 2x1 Gold TH Header 100mil 2x1 TH HTSW 102 07 G S S...

Страница 19: ...set forth above or credit User s account for such EVM TI s liability under this warranty shall be limited to EVMs that are returned during the warranty period to the address designated by TI and that...

Страница 20: ...the antenna types listed in the user guide with the maximum permissible gain and required antenna impedance for each antenna type indicated Antenna types not included in this list having a gain great...

Страница 21: ...t the EVM user guide prior to connecting any load to the EVM output If there is uncertainty as to the load specification please contact a TI field representative During normal operation even with the...

Страница 22: ...OST OF REMOVAL OR REINSTALLATION ANCILLARY COSTS TO THE PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES RETESTING OUTSIDE COMPUTER TIME LABOR COSTS LOSS OF GOODWILL LOSS OF PROFITS LOSS OF SAVINGS LOSS OF...

Страница 23: ...TI Resource NO OTHER LICENSE EXPRESS OR IMPLIED BY ESTOPPEL OR OTHERWISE TO ANY OTHER TI INTELLECTUAL PROPERTY RIGHT AND NO LICENSE TO ANY TECHNOLOGY OR INTELLECTUAL PROPERTY RIGHT OF TI OR ANY THIRD...

Страница 24: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Texas Instruments INA1620EVM...

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