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D601

12

OPA855

SBOS622 – JULY 2018

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Feature Description (continued)

Figure 9 shows the open-loop output impedance of the OPA855 as a function of frequency. To achieve high slew

rates and low output impedance across frequency, the output swing of the OPA855 is limited to approximately 3

V. The OPA855 is typically used in conjunction with high-speed pipeline ADCs and flash ADCs that have limited

input ranges. Therefore, the OPA855 output swing range coupled with the class-leading voltage noise

specification for a CMOS amplifier maximizes the overall dynamic range of the signal chain.