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Q&A from Analog Devices EngineerZone: SigmaDSP/SigmaStudio and DSP discussions (16 topics).
16 topics · 61 messages
Filtered by: #power ✕
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ADAU1787 current consumption in software power-down when using the internal DVDD LDO
We are characterizing the power consumption of the ADAU1787 in a battery-powered embedded platform. During these tests, we observed a large difference between hardware power-down and software full-chi
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ADAU146X - Low-Power Mode and Wake up from digital audio signal
Hello, I am trying to figure out a standby/sleep scheeme for a DSP/amplifier board featuring the ADAU1462/66. To wake up the board via my ADC its pretty clear, since it has a threshold based audio det
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Wondom DSP Kernel Board APM 2 - Power Supply ?
Hello, have a maybe stupid question concerning a power supply for the APM 2 Board. Reason, I have connected a 5 Volts power supply to the APM 2 and the unit "smoked off", means, it got hot and now if
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ADAU1701 duplicate power pins
Hello All, I am currently working on the PCB layout for a board that includes an ADAU1701. However, I am a little confused with the power pins. The chip has a pair of power and ground pins in each cor
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ADAU1761 SNR x Power profile
Hi Folks, ADAU1761 datasheet shows in table 4 the Typical THD + N for each power profile considering that all bias settings (MXBIAS, ADCBIAS, HPBIAS, DACBIAS, RBIAS, PBIAS) are configured for the same
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What is the "power-down" state of the ADAU145x?
For standby (soft powerdown) operation we need to of course draw minimal power, and I'd like to avoid switching the IOVDD off, mostly because voltages on the potentially still-active I2C bus can destr
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Audio processor recommendation for megaphone project
Hi, We are working on a low-power battery-operated megaphone/bullhorn project (purpose is to amplify a user's voice). In terms of the audio flow, the user's voice will first be captured by 1 - 2 digit
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Sequencing separate regulators for AVDD and IOVDD for ADAU1761
I plan to use two ADP7104 (3.3V) regulators to power the AVDD and IOVDD separately on an ADAU1761, is this possible? If yes are there any restrictions on power sequencing, e.g IOVDD has to come up fir
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ADAU145x power down
Can we use the START_CORE register to enter a low power state with fast power up? Please advice how to enter power saving mode with fast recovery - with no re-booting? Audio Signal Processors adau1451
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ADP7142 for use with ADAU1701
I need to drop down from a higher voltage than the venerable ADP3336 can handle and so I'm looking at the ADP7142. It's only rated for 200ma of current though compared to the 800ma for the 3336 but I
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Output Crash when power down ADAU1446 pcb and power amp
Hello! I have a question about power down my pcb (ADAU1446 and AD1939) in combination with a power amplifier and a loudspeaker. It crashes/crackles very very loud every time I turn off the power of th
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EVAL_ADAU1701MINIBZ with NO power supply?
Hi, I'm writting here to announce that I have just recived an EVAL_ADAU1701MINIBZ evaluation board, which in theory comes with the USBi board, the ADAU1701 board, the USB cables and a POWER SUPPLY. "T
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Processor horsepower / instructions x cycle / load percentage
Hi everybody, I'm using Sygmastudio 3.8, I remember that some time ago there was the possibility to see the details about the generated program in order to understand how much of the horsepower of the
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ADAU1701 in self-boot mode with reduced power consumption ?
Hi all, i need to know if it is possible to have the ADAU1701 (configured in self-bot mode) while powered down most of all chip sections (for reduced stand-by consumption) and observing an ADC for sma
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Power supplies, capacitors, and application schematics
In SigmaDSP datasheets, the pin description table often has a statement like the following: This pin should be decoupled to DGND with a 100nF capacitor. However, if you look at the application circuit
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About the relation between AVDD and IOVDD at ADAU1761
Should I use same voltage for AVDD and IOVDD? [ex) AVDD = IOVDD = 1.8 or 3.3V] If power supply settings are AVDD = 3.3V and IOVDD =1.8V, is it OK? And in this case,is the supply current increase? My c