www.austriamicrosystems.com

Revision 1.09

14 - 40

AS5130

Data Sheet - D e ta i l e d D e s c r i p t i o n

Figure 8. Ratiometric Analog Output

Analog Sin/Cos Outputs with External Interpolator

end for test purposes. These outputs allow the user to perform the angle calculation by an external ADC + µC, e.g. to

compute the angle with a high resolution. In addition, the inverted Sinus and Cosine signals (SINN, COSN; see dotted

lines) are available for differential signal transmission.

The input resistance of the receiving amplifier or ADC should be greater than 100k

Ω. The signal lines should be kept

as short as possible, longer lines should be shielded in order to achieve best noise performance.

The SINN / COSN / SINP / COSP signals are amplitude controlled to ~1.3Vp (differential) by the internal AGC

controller. The DC bias voltage is 2.25 V.

If the SINN and COSN outputs cannot be sampled simultaneously, it is recommended to disable the automatic gain

control (see Table 8) as the signal amplitudes may be changing between two readings of the external ADC. This may

lead to less accurate results.

micro

controller

100n

+5V

PWM

AS5130

analog

out

R

≥4k7

C

≥1µF

Analog out

PWMout

Angle

360º

180º

0º

0V

5V