AS5043

Data Sheet – Mode Input Pin

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Revision 1.80

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Mode Input Pin

The absolute angular position is sampled at a rate of 10.4kHz (t=96µs) in fast mode and at a rate of 2.6kHz (t=384µs) in

slow mode.

These modes are selected by pin MODE (#2) during the power up of the AS5043. This pin activates or deactivates an

internal filter, which is used to reduce the digital jitter and consequently the analog output noise.

Activating the filter by pulling Mode = LOW reduces the transition noise to <0.03° rms. At the same time, the sampling

rate is reduced to 2.6kHz and the signal propagation delay is increased to 384µs. This mode is recommended for high

precision, low speed and ≤360° applications.

Deactivating the filter by setting Mode = HIGH increases the sampling rate to 10.4kHz and reduces the signal propagation

delay to 96µs. The transition noise will increase to <0.06° rms. This mode is recommended for higher speed and full scale

= 360° applications.

Switching the MODE pin affects the following parameters:

Table 4: Mode Pin Settings

Parameter

Slow Mode

(Pin MODE = 0)

Fast Mode

(Pin MODE = 1)

Sampling rate

2.61 kHz

(383µs)

10.42 kHz

(95.9µs)

Transition noise (1 sigma)

≤ 0.03° rms

≤ 0.06° rms

Propagation delay

384µs

96µs

Startup time

20ms

80ms

The MODE pin should be set at power-up. A change of the mode during operation is not allowed.