7.4 Device Functional Modes

The AMC0x00D operates in one of the following states:

• Off-state: The low-side supply (VDD2) is below the VDD2UV threshold. The device is not responsive. OUTP

and OUTN are in Hi-Z state. Internally, OUTP and OUTN are clamped to VDD2 and GND2 by ESD protection

diodes.

• Missing high-side supply: The low-side of the device (VDD2) is supplied and within recommended operating

conditions. The high-side supply (VDD1) is below the VDD1UV threshold. The device outputs the VFAILSAFE

voltage.

• Analog input overrange (positive full-scale input): VDD1 and VDD2 are within recommended operating

conditions but the analog input voltage VIN is above the maximum clipping voltage VClipping, MAX. The device

outputs positive VCLIPout.

• Analog input underrange (negative full-scale input): VDD1 and VDD2 are within recommended operating

conditions but the analog input voltage VIN is below the minimum clipping voltage VClipping, MIN. The device

outputs negative VCLIPout.

• Normal operation: VDD1, VDD2, and VIN are within the recommended operating conditions. The device

outputs a differential voltage that is proportional to the input voltage.

Table 7-1 lists the operating modes.

Table 7-1. Device Operational Modes

OPERATING

CONDITION

VDD1

VDD2

VIN

DEVICE

RESPONSE

Off

Don't care

VDD2 < VDD2UV

Don't care

OUTP and OUTN are in Hi-Z state. Internally,

OUTP and OUTN are clamped to VDD2 and

GND2 by ESD protection diodes.

Missing high-side

supply

VDD1 < VDD1UV

Valid(1)

Don't care

The device outputs the VFAILSAFE voltage.

Input overrange

Valid(1)

Valid(1)

VIN > VClipping, MAX

The device outputs positive VCLIPout.

Input underrange

Valid(1)

Valid(1)

VIN < VClipping, MIN

The device outputs negative VCLIPout.

Normal operation

Valid(1)

Valid(1)

Valid(1)

The device outputs a differential voltage that

is proportional to the input voltage.

(1)

Valid denotes operation within the recommended operating conditions.

AMC0200D, AMC0300D

SBASAR7 – SEPTEMBER 2025

www.ti.com

22

Submit Document Feedback

Copyright © 2025 Texas Instruments Incorporated

Product Folder Links: AMC0200D AMC0300D