Thanks Ryan.
In order to keep any transient reverse current out of the REG103, I added a schottky MBD54 anode to cathode from REG103 output pin 2 to input pin 1. When I ramp +12V slowly I see the REG103 working as expected into the 470 ohm load. However…
Other Parts Discussed in Thread: REG103REG103UA-3.3 - Can the outputs of two or more of these regulators be tied together? I am bringing an RS-485 serial interface to a connector as well as the flash programming signals and the +3.3V to the same connector…
Other Parts Discussed in Thread: PCM2906C , REG103 Why is the VCCCI pin at PCM2906C externally powered in EVM and TYPICAL CIRCUIT CONNECTION 1?
Is the internal 3.3V voltage generator not powerful enough for "high-performance application" or too noisy?…
Hi Eli,
As with any audio ADC, there is no need to low pass filter the inputs. The LPF is typically required at the output side (i.e. DAC output stage). You should take care to ensure that your input source has sufficient level to match the ADC's 0dBFS…
Bill,
Thanks for jumping-in on this issue ... our REG103's are working fine. With Vin = 0v, and Vout = 0v -- i.e., regulator not powered -- our /ERROR flag output voltage is still at +0.93v (or thereabouts). It looks like an issue with the TXB0104…
Other Parts Discussed in Thread: REG103 The datasheet states VCOM is 0.5 x VCCI which is around 1.85V with the suggeset REG103 driving that pin.
But, the datasheet is unclear on what Vmin and Vmax out of the DAC is expected. The only hint is a reference…
Other Parts Discussed in Thread: TMS320VC5505 , REG103 Hello,
I am using the TMS320VC5505 eZdp USB Stick evaluation board to program the VC5505 DSP. For my project I need a high resolution (>16 bit) DAC and ADC. Instead of buying an external one I first…
Other Parts Discussed in Thread: TPS62110 , TPS7A80 Needing a 5 volt voltage regulator with 500ma output and a input voltage of 12 volts I selected the Reg103-5 SO-8 package, but then found that I neglected the Theta Ja and the PD = (Vin -Vout) * Iout …
I have another question. :)
In PCM290x datasheets, I can read that additional LDO regulator (REG103-A) is needed for better analog (audio) performances. Output voltage of REG103 (cca. +4V), is connected through Schottky diode to pin 10 (Vccci), and with…