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AS5263
Datasheet - D e t a i l e d D e s c r i p t i o n
7.2.7
Analog Output Diagnostic Mode
Due to the low pin count in the application, a wrong operation must be indicated by the output pin OUT_T , OUT_B . This could be realized using
the failure bands. The failure band is defined with a fixed level. The failure band low is specified from 0% to 4% of the supply range. The failure
band high is defined from 100% to 96%. Several failures can happen during operation. The output signal remains in these bands over the
specified operating and load conditions. All the different failures can be grouped into the internal alarms (failures) and the application related
failures.
C LOAD ≤ 42 nF, R PU = 2k…5.6k Ω
R PD = 2k…5.6k Ω load pull-up
Table 8. Different Failure Cases of AS5263
Type
Failure Mode
Symbol
Failure Band
Note
Out of magnetic range
Could be switched off by one OTP bit
(too less or too high magnetic
input)
MAGRng
High/Low
EXT_RANGE .
Programmable by OTP bit DIAG_HIGH
Internal alarms (failures)
Application related
failures
Cordic overflow
Offset compensation finished
Watchdog fail
Oscillator fail
Overvoltage condition
Broken VDD
Broken VSS
Short circuit output
COF
OCF
WDF
OF
OV
BVDD
BVSS
SCO
High/Low
High/Low
High/Low
High/Low
High/Low
High/Low
Programmable by OTP bit DIAG_HIGH
Programmable by OTP bit DIAG_HIGH
Programmable by OTP bit DIAG_HIGH
Programmable by OTP bit DIAG_HIGH
Dependent on the load resistor
Pull up → failure band high
Pull down → failure band low
Switch off → short circuit dependent
For efficient use of diagnostics it is recommended to program to clamping levels CLL and CLH .
7.2.8
Analog Output Driver Parameters
The output stage is configured in a push-pull output. Therefore it is possible to sink and source currents.
C LOAD ≤ 42 nF, R PU = 2k…5.6k Ω
R PD = 2k…5.6k Ω load pull-up
Table 9. General Parameters for the Output Driver
Symbol
IOUTSCL
IOUTSCH
TSCDET
TSCREC
ILEAKOUT
BGNDPU
BGNDPD
BVDDPU
BVDDPD
Parameter
Short circuit output current (low side driver)
Short circuit output current (high side driver)
Short circuit detection time
Short circuit recovery time
Output Leakage current
Output voltage broken GND with pull-up
Output voltage broken GND with pull-down
Output voltage broken VDD with pull-up
Output voltage broken VDD with pull-down
Min
8
-8
20
2
-20
96
0
96
0
Typ
Max
32
-32
600
20
20
100
4
100
4
Unit
mA
mA
μs
ms
μA
%VDD
%VDD
%VDD
%VDD
Note
V OUT =27V
V OUT =0V
output stage turned off
output stage turned on
V OUT =VDD=5V
R PU = 2k…5.6k
R PD = 2k…5.6k
R PU = 2k…5.6k
R PD = 2k…5.6k
Note: A Pull-Up/Down load is up to 1k Ω with increased diagnostic bands from 0%-6% and 94%-100%.
www.austriamicrosystems.com/AS5263
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