AMC1311&1301: Inquiry about OOK and edge

Victoria Qin

Part Number: AMC1311
Other Parts Discussed in Thread: AMC1301, AMC1350, AMC3330

Hi team,

AMC1301 is using edge-based link, AMC1311 is using OOK-based link.

1. Could you explain why we do this evolution and what's the adv of OOK over edge?

2. In AMC1301 datasheet as below, is there any impedance demand for signal source of current sensing amplifier? and why.

Regards,

Victoria

over 1 year ago

+1 Alexander Smith over 1 year ago

TI__Guru 51211 points

Hi Victoria,

This change was made in order to reduce the radiated emissions produced by the device. Please see this collateral for additional information: https://www.ti.com/lit/ml/sbaa438a/sbaa438a.pdf

Devices with low input impedance comes with additional challenges when sensing a high impedance node, such as for a voltage sensing application. It's typically preferable to use a device with higher input imepdance for voltage sensing such as AMC1311, AMC3330 (with integrated DC/DC converter) or AMC1350/1. Please see this collateral and this excel calculator for additional information: https://www.ti.com/lit/ml/sbaa350a/sbaa350a.pdf

https://www.ti.com/lit/zip/sbar013

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AMC1311&1301: Inquiry about OOK and edge