CDB5560-2
The theoretical input frequency range of the CS5560 is from DC to the Nyquist frequency of 25 kHz. The
analog input buffer amplifiers are configured for a cutoff frequency of 16.8 kHz to band-limit noise into the
ADC. Changing the cutoff frequency will change the noise bandwidth accordingly.
3.3.2
ADC Reset
The CS5560 ADC makes use of an externally generated power-on reset. Therefore, after power is ap-
plied to the ADC, the reset pin must be driven low then released. Pressing the Reset button generates a
reset cycle. A reset cycle can be generated at any time during ADC operation. The ADC RST pin (active
low) is held inactive through a pull-up resistor.
3.3.3
Voltage Reference
The voltage reference IC provided generates a 4.096 V precision reference.
3.3.4
ADC Reference Frequency
The reference frequency for the CS5560 ADC is provided by a 16.000 MHz oscillator.
8
DS790DB2
CIRRUS [ CIRRUS LOGIC ]
