Cirrus Logic CS53L30 - Manual (Page 58)

58 DS992F1
CS53L30
8 Parameter Definitions
8 Parameter Definitions
9 Plots
9.1 Digital Filter Response
9.1.1 ADC High-Pass Filter
Dynamic range. The ratio of the rms value of the signal to the rms sum of all other spectral components over the
specified bandwidth. Dynamic range is a signal-to-noise ratio measurement over the specified band width made
with a –60 dB signal.
Frequency response. A measure of the amplitude response variation from 10 Hz to 20 kHz relative to the amplitude
response at 1 kHz. Frequency response is expressed in decibel units.
Gain drift. The change in gain value with temperature, expressed in ppm/°C units.
Interchannel gain mismatch. The gain difference between left and right channel pairs. Interchannel gain mismatch
is expressed in decibel units.
Interchannel isolation. A measure of crosstalk between the left- and right-channel pairs. Interchannel Isolation is
measured for each channel at the converter's output with no signal to the input under test and a full-scale signal
applied to the other channel. Interchannel isolation is expressed in decibel units.
Load resistance and capacitance. The recommended minimum resistance and maximum capacitance required for
the internal op-amp's stability and signal integrity. The load capacitance effectively moves the band-limiting pole
of the amp in the output stage. Increasing the load capacitance beyond the recommended value can cause the
internal op-amp to become unstable.
Figure 9-1. ADC HPF Response Figure 9-2. ADC HPF Response, Passband Detail