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Number: CS1083208
Contact: moshe FRID
First name: moshe
Last name: FRID
Short description: Typical Characteristics curve
Phone: 972974174117411
Email: moshef@adcom.co.il
Company: adcom
Company phone:
Language: English
State: Open
Provide case details or comments:TLV320ADC6140
at the data sheet page 17 there is a curve of : Figure 18. FFT With Idle Input With DRE Disabled
we use that chip X 2 with 4 analog mems diff microphones each:
my customer want to check the design quality by restoring that curve
he ran a that checking and got more noise than at that curve in low freq. :
my question is how to make all the conditions that are with that curve
1. linear phase decimation filter -how to config it
2. all performance measurements are done with a 20-kHz, low-pass filter, -how to add it?
3. A-weighted filter - how to do it?
4. what is ''IDLE INPUT'' - we did not connect the Mic. to the board but the serial capacitors 1uF stay so do i need to connect a 2.5K resistor instead in order to fix impedance matching issue?
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