ADA4571

Data Sheet

Rev. 0 | Page 20 of 21

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Short-Circuit Condition to GND or VDD

In the event of a short-circuit condition, the output voltages are

pulled to the GND or VDD pin.

Short-Circuit Between Sine and Cosine Sensor Outputs

In the event of a short-circuit between sensor outputs, the IC

output voltages are tied to the output common-mode voltage. A

gross angular error is detected in the microcontroller.

Figure 34. Output Span Classification During Short-Circuit Diagnostic Condition

Table 7. Diagnostic Cases

Fault Description

Output Conditions

Alert

Broken Bond Wire Between the

Internal MR Sensor and the ASIC

Broken bond wire detection is activated; the

broken channel(s), VSIN or VCOS, are pulled to

ground

Diagnostic region violation

Broken Bond Wire at the PD Pin

Device remains functional

No alert

Broken Bond Wire at the GC Pin

Gain control is activated

Possible change in output amplitude

Output Short-Circuit to GND

Shorted channel is pulled to ground

Diagnostic region violation

Output Short-Circuit to VDD

Shorted channel is pulled to VDD

Diagnostic region violation

100%

93%

LINEAR REGION

SHORT-CIRCUIT DIAGNOSTIC BAND (HIGH)

SHORT-CIRCUIT DIAGNOSTIC BAND (LOW)

7%

0%