DA7217 datasheet(8/170 Pages) RENESAS

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DA7217

Ultra-Low Power Stereo Codec

Datasheet

Revision 3.5

23-Feb-2022

CFR0011-120-00

8 of 169

Terminology

[1]

Crosstalk (dB) is the level difference between the active path output and the idle path measured

signal level, at the test signal frequency. The active path is configured and supplied with an

input signal capable of driving a full scale output, with the signal measured at the output of the

specified idle path.

[2]

Mute Attenuation is the difference in level between the full scale output signal and the output

with mute applied.

[3]

Channel Separation (dB) [left-to-right and right-to-left] is the difference in level between the

active channel (driven to maximum full scale output) and the signal level measured in the idle

channel at the test signal frequency. The active channel is configured and supplied with an input

signal capable of driving a full scale output, with the signal measured at the output of the

associated idle channel.

[4]

PSRR is the ratio of a given power supply change relative to the output signal that results from

it. PSRR is measured under quiescent signal path conditions.

[5]

SNR is the difference in level between the maximum full scale output signal and the output with

no input signal applied.

[6]

THD+N is the level of the rms value of the sum of harmonic distortion products plus noise in the

specified bandwidth relative to the amplitude of the measured output signal.

All performance measurements carried out with 20 kHz low pass filter, and where noted an A-

weighted filter. Failure to use such a filter will result in higher THD and lower SNR readings than are

found in the Electrical Characteristics. The low-pass filter removes out of band noise; although it is

not audible it may affect dynamic specification values.

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