CDB42L51 Cirrus Logic Inc, CDB42L51 Datasheet - Page 78

• Manufacturer Part Number: CDB42L51
• Description: BOARD EVAL FOR CS42L51 CODEC
• Manufacturer: Cirrus Logic Inc

Specifications of CDB42L51

• Main Purpose: Audio, CODEC
• Embedded: Yes, Other
• Utilized Ic / Part: CS42L51, CS8406, CS8415
• Primary Attributes: Stereo, Digital Audio Transmitter and Receiver
• Secondary Attributes: Graphic User Interface, S/PDIF Interface
• Description/function: Audio CODECs
• Operating Supply Voltage: 5 V
• Product: Audio Modules
• For Use With/related Products: CS42L51
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant
• Other names: 598-1005

78
7.3
B
S
d
F
-100
-60
-64
-68
-72
-76
-80
-84
-88
-92
-96
20
ADC_FILT+ Capacitor Effects on THD+N
The value of the capacitor on the ADC_FILT+ pin, 16, affects the low frequency total harmonic distortion +
noise (THD+N) performance of the ADC. Larger capacitor values yield significant improvement in THD+N
at low frequencies.
en from the CDB42L51 using an Audio Precision analyzer.
50
100
200
Figure 33
Figure 33. ADC THD+N vs. Frequency w/Capacitor Effects
500
shows the THD+N versus frequency for the ADC analog input. Plots were tak-
Hz
1k
2k
5k
10k
20k
Legend –
Capacitor Value on ADC_FILT+
1 µF
10 µF
22 µF
CS42L51
DS679F1