AS5043 Programmable 360° Magnetic Angle Encoder

Revision 1.4, 04-Apr-06

www.austriamicrosystems.com

Page 8 of 26

Vref

0°

90°

180°

270°

360°

0%

analog

output

voltage

angle

100%

90%

10%

normal

operating

area

In an error case, the output

voltage is in the grey area

Note: Figure 8 and are shown for 360° operation. See Table 5 (page 12) for further angular range programming options.

11.1.2 Diagnostic Output Mode

In Diagnostic Output Mode (see Figure

9) the analog output of the internal DAC

error case, either when the supply is

interrupted or when the magnetic field is

in the “red” range, (see Table 3) the

output is switched to 0V and thus

indicates the error condition.

Figure 9: Diagnostic Output Mode

It is possible to enable the analog output permanently (it will not be switched off even if the magnetic field is out of range).

To enable this feature an OTP bit in the factory setting must be set. The corresponding bit is FS6. See application note

AS5040-20 (Extended features of OTP programming) for further details. The application note is available for download at the

austriamicrosystems website.

The analog and digital outputs will have the following conditions:

Status

DAC output voltage

SSI digital output

normal operation

#0 - #1023 (0°-360°),

MagRngn = 1

magnetic field out of range

DAC output is

switched to 0V

#0 - #1023 (0°-360°)

out of range is signaled in status bits:

MagInc=MagDec=LIN=1, MagRngn= 0

broken positive power supply

broken power supply ground

broken positive power supply

broken power supply ground

with pull down resistor at DO (receiving

side), all bits read by the SSI will be

“0”-s, indicating a non-valid output

**) VDD = positive supply voltage at receiving side (3.0 – 5.5V)