7.2.2.3 Application Curves

The effective number of bits (ENOB) is often used to compare the performance of ADCs and ΔΣ modulators.

Figure 7-3 shows the ENOB of the AMC0136 with different oversampling ratios.

1

10

100

1000

OSR

0

2

4

6

8

10

12

14

16

sinc1

sinc2

sinc3

G013

Figure 7-3. Measured Effective Number of Bits vs Oversampling Ratio

7.3 Best Design Practices

Do not leave the analog input (INP pin) of the AMC0136 unconnected when the device is powered up. If the

device input is left floating, the output of the device is not valid.

Do not connect protection diodes to the input (INP pin) of the AMC0136. Diode leakage current potentially

introduces significant measurement error especially at high temperatures. The input pin is protected against high

voltages by the ESD protection circuit and the high impedance of the external resistive divider.

AMC0136

SBASAZ0A – AUGUST 2024 – REVISED DECEMBER 2024

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