CS4340-KS datasheet(21/28 Pages) CIRRUS

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CS4340

DS297PP3

21

7. ANALOG PERFORMANCE PLOTS

The following CS4340 Analog Performance Plots

were taken from the CDB4340 evaluation board

using the Audio Precision Dual Domain System

Two Cascade. All Base Rate Mode (BRM) plots

were taken at a 48 kHz sample rate with a 20 Hz to

20 kHz bandwidth using a 20 kHz low-pass brick-

wall filter in the DSP Analyzer. All High Rate

Mode (HRM) plots were taken at a 96 kHz sample

rate with a 20 Hz to 40 kHz bandwith using a

40 kHz brickwall filter in the DSP Analyzer.

Gain

dB

-10dB

0dB

Frequency

T2 = 15 µs

T1=50 µs

F1

F2

3.183 kHz

10.61 kHz

Figure 20. De-Emphasis Curve

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