CS4365 View Datasheet(PDF) - Cirrus Logic

Part Name

Description

MFG CO.

CS4365

114 dB, 192 kHz 6-Channel D/A Converter

Cirrus Logic 

CS4365

4.10 Analog Output and Filtering

The application note “Design Notes for a 2-Pole Filter with Differential Input” discusses the second-order

Butterworth filter and differential to single-ended converter which was implemented on the CS4365 evalua-

tion board, CDB4365, as seen in Figure 20. The CS4365 does not include phase or amplitude compensa-

tion for an external filter. Therefore, the DAC system phase and amplitude response will be dependent on

the external analog circuitry. The off-chip filter has been designed to attenuate the typical full-scale output

level to below 2 Vrms.

Figure 19 shows how the full-scale differential analog output level specification is derived.

AOUT+

4.15 V

2.5 V

0.85 V

AOUT-

4.15 V

2.5 V

0.85 V

Full-Scale Output Level= (AOUT+) - (AOUT-)= 6.6 Vpp

Figure 19. Full-Scale Output

Figure 20. Recommended Output Filter

28

DS670F2

Share Link: