AS5043 View Datasheet(PDF) - Unspecified

Part Name

Description

Manufacturer

AS5043

PROGRAMMABLE 360° MAGNETIC ANGLE ENCODER WITH ABSOLUTE SSI AND ANALOG OUTPUTS

Unspecified 

AS5043 Programmable 360° Magnetic Angle Encoder

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

Vref

100%

90%

analog

output

voltage

10%

0%

0°

90°

180°

In an error case, the output

voltage is in the grey area

270°

normal

operating

area

angle

360°

In Diagnostic Output Mode (see Figure

9) the analog output of the internal DAC

ranges from 10% - 90% Vref*). In an

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

normal operation

DAC output voltage

10% - 90% Vref*)

magnetic field out of range

< 10% Vref*),

DAC output is

switched to 0V

broken positive power supply

(VOUT pull down resistor at receiving side)

broken power supply ground

(VOUT pull down resistor at receiving side)

broken positive power supply

(VOUT pull up resistor at receiving side)

broken power supply ground

(VOUT pull up resistor at receiving side)

< 10% VDD**)

< 10% VDD**)

> 90% VDD**)

> 90% VDD**)

SSI digital output

#0 - #1023 (0°-360°),

MagRngn = 1

#0 - #1023 (0°-360°)

out of range is signaled in status bits:

MagInc=MagDec=LIN=1, MagRngn= 0

with pull down resistor at DO (receiving

side), all bits read by the SSI will be

“0”-s, indicating a non-valid output

*) Vref = internal: ½ * VDD5V (pin #16) or external: VDACref (pin#9), depending on Ref_extEN bit in OTP (0=int., 1=ext.)

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

Revision 1.4, 04-Apr-06

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