Electronic Components Datasheet Search |
|
TDA7564 Datasheet(PDF) 10 Page - STMicroelectronics |
|
TDA7564 Datasheet(HTML) 10 Page - STMicroelectronics |
10 / 20 page TDA7564 10/20 The information related to the outputs status is read and memorized at the end of the current pulse top. The acquisition time is 100 ms (typ.). No audible noise is generated in the process. As for SHORT TO GND / Vs the fault-detection thresholds remain unchanged from 26 dB to 12 dB gain setting. They are as follows: Concerning SHORT ACROSS THE SPEAKER / OPEN SPEAKER, the threshold varies from 26 dB to 12 dB gain setting, since different loads are expected (either normal speaker's impedance or high impedance). The values in case of 26 dB gain are as follows: If the Line-Driver mode (Gv= 12 dB and Line Driver Mode diagnostic = 1) is selected, the same thresholds will change as follows: b) PERMANENT DIAGNOSTICS. Detectable conventional faults are: – SHORT TO GND – SHORT TO Vs – SHORT ACROSS THE SPEAKER The following additional features are provided: – OUTPUT OFFSET DETECTION The TDA7564 has 2 operating statuses: 1 RESTART mode. The diagnostic is not enabled. Each audio channel operates independently from each other. If any of the a.m. faults occurs, only the channel(s) interested is shut down. A check of the output status is made every 1 ms (fig. 19). Restart takes place when the overload is removed. 2 DIAGNOSTIC mode. It is enabled via I2C bus and self activates if an output overload (such to cause the intervention of the short-circuit protection) occurs to the speakers outputs. Once activated, the di- agnostics procedure develops as follows (fig. 20): – To avoid momentary re-circulation spikes from giving erroneous diagnostics, a check of the output sta- tus is made after 1ms: if normal situation (no overloads) is detected, the diagnostic is not performed and the channel returns back active. – Instead, if an overload is detected during the check after 1 ms, then a diagnostic cycle having a duration of about 100 ms is started. D01AU1253 S.C. to GND x S.C. to Vs 0V 1.8V VS-1.8V VS x Normal Operation 1.2V VS-1.2V S.C. across Load x Open Load 0V 1.75 Ω 45 Ω Infinite x Normal Operation 0.5 Ω 85 Ω D01AU1327 D02AU1340 S.C. across Load x Open Load 0 Ω 7 Ω 180 Ω infinite x Normal Operation 2 Ω 330 Ω |
Similar Part No. - TDA7564 |
|
Similar Description - TDA7564 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |