CS5321 datasheet(34/36 Pages) CIRRUS

34 / 36 page

CS5321/22

DS454F2

5. PARAMETER DEFINITIONS

Dynamic Range

The ratio of the full-scale (rms) signal to the broadband (rms) noise signal. Broadband noise is

measured with the input grounded within the bandwidth of 1 Hz to f3 Hz (See “CS5322

FILTER CHARACTERISTICS” on page 8). Units in dB.

Signal-to-Distortion

The ratio of the full-scale (rms) signal to the rms sum of all harmonics up to f3 Hz.

Units in dB.

Intermodulation Distortion

The ratio of the rms sum of the two test frequencies (30 and 50 Hz) which are each 6 dB down

from full-scale to the rms sum of all intermodulation components within the bandwidth of dc to

f3 Hz. Units in dB.

Full Scale Error

The ratio of the difference between the value of the voltage reference and analog input voltage

to the full scale span (two times the voltage reference value). This ratio is calculated after the

effects of offset and the external bias components are removed and the analog input voltage is

adjusted. Measurement of this parameter uses the circuitry illustrated in the System Connection

Diagram. Units in %.

Full Scale Drift

The change in the Full Scale value with temperature. Units in %/

°C.

Offset

The difference between the analog ground and the analog voltage necessary to yield an output

code from the CS5321/22 of 000000(H). Measurement of this parameter uses the circuit

configuration illustrated in the System Connection Diagram. Units in mV.

Offset Drift

The change in the Offset value with temperature. Measurement of this parameter uses the

circuit configuration illustrated in the System Connection Diagram. Units in

µV/°C.

CS5321 Datasheet(PDF) 34 Page - Cirrus Logic