CDB53L21 Cirrus Logic Inc, CDB53L21 Datasheet - Page 56

• Manufacturer Part Number: CDB53L21
• Description: BOARD EVAL FOR CS53L21 ADC
• Manufacturer: Cirrus Logic Inc

Specifications of CDB53L21

• Number Of Adc's: 2
• Number Of Bits: 24
• Sampling Rate (per Second): 96k
• Data Interface: Serial
• Inputs Per Adc: 3 Single Ended
• Input Range: ±2.5 V
• Power (typ) @ Conditions: 22.45mW @ 48kSPS, 2.5 V
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -10°C ~ 70°C
• Utilized Ic / Part: CS53L21
• Product: Audio Modules
• 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: 598-1550

56
7. ANALOG PERFORMANCE PLOTS
7.1
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 CDB53L21 using an Audio Precision analyzer.
50
100
200
Figure 22
Figure 22. 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
CS53L21
DS700PP1