CS5126 datasheet(15/32 Pages) CIRRUS

15 / 32 page

supplies must always remain above the mini-

mum specification.

As with any high-precision A/D converter, the

CS5126 requires careful attention to grounding

and layout arrangements. However, no unique

layout issues must be addressed to properly ap-

ply the CS5126. The CDB5126 evaluation board

is available for the CS5126, which avoids the

need to design, build, and debug a high-preci-

sion PC board to initially characterize the part.

The board comes with a socketed CS5126, and

can be quickly reconfigured to simulate any

combination of sampling and master clock con-

ditions.

Power Supply Rejection

The CS5126 features a fully differential compa-

rator design, resulting in superior power supply

rejection. Rejection is further enhanced by the

on-chip self-calibration and "auto-zero" process.

Figure 14 shows worst-case rejection for all

combinations of conversion rates and input con-

ditions.

Power Supply Ripple Frequency

1 kHz

10 kHz

100 kHz

1 MHz

Figure 14. Power Supply Rejection

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CS5126

DS32F1

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