Texas Instruments INA1620EVM User Manual Download Page 20

FCC Interference Statement for Class B EVM devices

NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of
the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential
installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance
with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference
will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which
can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more
of the following measures:

Reorient or relocate the receiving antenna.

Increase the separation between the equipment and receiver.

Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

Consult the dealer or an experienced radio/TV technician for help.

3.2

Canada

3.2.1

For EVMs issued with an Industry Canada Certificate of Conformance to RSS-210 or RSS-247

Concerning EVMs Including Radio Transmitters:

This device complies with Industry Canada license-exempt RSSs. Operation is subject to the following two conditions:

(1) this device may not cause interference, and (2) this device must accept any interference, including interference that may
cause undesired operation of the device.

Concernant les EVMs avec appareils radio:

Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation
est autorisée aux deux conditions suivantes: (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit
accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement.

Concerning EVMs Including Detachable Antennas:

Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and maximum (or lesser)
gain approved for the transmitter by Industry Canada. To reduce potential radio interference to other users, the antenna type
and its gain should be so chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than that necessary for
successful communication. This radio transmitter has been approved by Industry Canada to operate with 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 greater than the maximum gain indicated for that type, are strictly prohibited
for use with this device.

Concernant les EVMs avec antennes détachables

Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec une antenne d'un type et
d'un gain maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage
radioélectrique à l'intention des autres utilisateurs, il faut choisir le type d'antenne et son gain de sorte que la puissance isotrope
rayonnée équivalente (p.i.r.e.) ne dépasse pas l'intensité nécessaire à l'établissement d'une communication satisfaisante. Le
présent émetteur radio a été approuvé par Industrie Canada pour fonctionner avec les types d'antenne énumérés dans le
manuel d’usage et ayant un gain admissible maximal et l'impédance requise pour chaque type d'antenne. Les types d'antenne
non inclus dans cette liste, ou dont le gain est supérieur au gain maximal indiqué, sont strictement interdits pour l'exploitation de
l'émetteur

3.3

Japan

3.3.1

Notice for EVMs delivered in Japan:

Please see

http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_01.page

日本国内に

輸入される評価用キット、ボードについては、次のところをご覧ください。

http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_01.page

3.3.2

Notice for Users of EVMs Considered “Radio Frequency Products” in Japan:

EVMs entering Japan may not be certified

by TI as conforming to Technical Regulations of Radio Law of Japan.

If User uses EVMs in Japan, not certified to Technical Regulations of Radio Law of Japan, User is required to follow the
instructions set forth by Radio Law of Japan, which includes, but is not limited to, the instructions below with respect to EVMs
(which for the avoidance of doubt are stated strictly for convenience and should be verified by User):

1.

Use EVMs in a shielded room or any other test facility as defined in the notification #173 issued by Ministry of Internal
Affairs and Communications on March 28, 2006, based on Sub-section 1.1 of Article 6 of the Ministry’s Rule for
Enforcement of Radio Law of Japan,

2.

Use EVMs only after User obtains the license of Test Radio Station as provided in Radio Law of Japan with respect to
EVMs, or

3.

Use of EVMs only after User obtains the Technical Regulations Conformity Certification as provided in Radio Law of Japan
with respect to EVMs. Also, do not transfer EVMs, unless User gives the same notice above to the transferee. Please note
that if User does not follow the instructions above, User will be subject to penalties of Radio Law of Japan.

Summary of Contents for INA1620EVM

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

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

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