7.3.3 Analog Output

The AMC0x00D provides a differential analog output voltage on the OUTP and OUTN pins proportional to the

input voltage. For input voltages in the range from VFSR, MIN to VFSR, MAX, the device has a linear response with

an output voltage equal to:

VOUT = VOUTP – VOUTN = 8.2 × VIN = 8.2 × (VINP – VINN)

(1)

At zero input, both pins output the same common-mode output voltage VCMout, as specified in the Electrical

Characteristics table. For absolute input voltages greater than |VFSR | but less than |VClipping|, the differential

output voltage continues to increase in magnitude, but with reduced linearity performance. The outputs saturate

at a differential output voltage of VCLIPout, as shown in Figure 7-2, if the input voltage exceeds the VClipping value.

Linear input range (VFSR)

Maximum input range before clipping (VClipping)

VClipping

VClipping

VFSR

VFSR

0

VOUTP

VOUTN

Input Voltage (VIN)

VCMout

VCLIPout

VFAILSAFE

Figure 7-2. Input to Output Transfer Curve of the AMC0x00D

The AMC0x00D output offers a fail-safe feature that simplifies diagnostics on a system level. Figure 7-2 shows

the behavior in fail-safe mode, in which the AMC0x00D outputs a negative differential output voltage that does

not occur under normal operating conditions. The fail-safe output is active:

• When the high-side supply VDD1 of the AMC0x00D device is missing

• When the high-side supply VDD1 falls below the undervoltage threshold VDD1UV

Use the maximum VFAILSAFE voltage specified in the Electrical Characteristics table as a reference value for

fail-safe detection on a system level.

www.ti.com

AMC0200D, AMC0300D

SBASAR7 – SEPTEMBER 2025

Copyright © 2025 Texas Instruments Incorporated

Submit Document Feedback

21

Product Folder Links: AMC0200D AMC0300D