Part Number: PCM1681 Other Parts Discussed in Thread: PCM9211 , PCM1862 , Hello expert,
This is Koki Tsushima.
I want to ask about PCM1681 can be used LRCK for DSD compatible model.
Customer wants to common I2S between this PCM1681 and other DAC.
When the…
Part Number: PCM1681 RC.docx
PCM1681
Analog output load capacitance SPEC is 50pF,it is so small that we can not meet the SPEC,now the simulation result is 12000Pf
1 How to meet the spec
2 The circuit we will use it, is it ok ?
Part Number: PCM1681-Q1 I need support for PCM1681-Q1. I would like to understand if the TDM 4 mode is possible. This is not very clear on the datasheet. I understand that the TDM8 mode is possible. So I can configure the device in order to address all…
Part Number: PCM1681 Other Parts Discussed in Thread: TPA3116D2 tHello,
Can the PCM1681 be used without the opamp based output active low pass filters ?
Since there is already low pass filters inside the chip.
Also I feel opamps may worsen the distortion…
Part Number: PCM1681 Hello expert, I'd like to know about whether this device can use with 176.4kHz I2S. Does this device can be used with 176.4kHz I2S?
Datasheet explained this device can use with I2S up to 200kHz. However, p15's chart don't have recommended…
Part Number: PCM1681-Q1 Other Parts Discussed in Thread: PCM1681 Hello, I have a problem with a PCM1681 8-channel DAC. At 0dB FS, outputs 1 to 4 work perfectly well. On outputs 5 to 8 the waveform is saturated only on the positive. The measure was make directly…
Part Number: PCM1681 Hello Expert, I have question for datasheet description regarding SCK and LRCK/BCK clock synchronization. PCM1681's datasheet said this device require to synchronize between SCK and LRCK/BCK as this link . However, I have discussed…
Part Number: PCM1681 Hello Expert, I have question regarding PCM1681. We plan to use several PCM1681 on one product. Also this product need to care about output phase variation. Then I'd like to ask about following point regarding output phase of PCM1681…
Part Number: PCM1681 Hi team,
Customer added 2pole active filter at the output of PCM1681 and the cutoff freq is 56kHz. But audible noise was mitigated though the fc is 56kHz which is out of range of audible freq.
When they use simple RC filter, audible…
Part Number: PCM1681 Hello,
A noisy PCM1681 was found with PPM generation, there are same sample devices in our hands.
Please look at attached waveform.
In this SE voltage output DAC, Vout swing is reference from Vcom as Bi-Pore Zero level.
But our sample…
