AS5245-HQFT austriamicrosystems, AS5245-HQFT Datasheet - Page 15

• Manufacturer Part Number: AS5245-HQFT
• Description: IC ENCODER PROG 32-QFN
• Manufacturer: austriamicrosystems
• Type: Linear, Rotary Encoder - Programmabler

Specifications of AS5245-HQFT

• Sensing Range: 45mT ~ 75mT
• Voltage - Supply: 3 V ~ 3.6 V, 4.5 V ~ 5.5 V
• Current - Supply: 21mA
• Current - Output (max): 4mA
• Output Type: Quadrature with Index (Incremental)
• Features: Programmable
• Operating Temperature: -40°C ~ 150°C
• Package / Case: 32-VQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AS5245
Data Sheet - D e t a i l e d D e s c r i p t i o n
Figure 10. Daisy Chain Mode Data Transfer
8.3 Pulse Width Modulation (PWM) Output
The AS5245 provides a pulse width modulated output (PWM), whose duty cycle is proportional to the measured angle. For angle position 0 to
4094:
Examples:
Exception:
The PWM frequency is internally trimmed to an accuracy of ±5% (±10% over full temperature range). This tolerance can be cancelled by
measuring the complete duty cycle as shown above.
Figure 11. PWM Output Signal
www.austriamicrosystems.com/AS5245
1. An angle position of 180º will generate a pulse width ton = 2049µs and a pause t
2. An angle position of 359.8º will generate a pulse width ton = 4095µs and a pause t
1. An angle position of 359.9º will generate a pulse width ton = 4097µs and a pause t
CSn
CLK
DO
calculation: 2049 * 4098 / (2049 + 2049) -1 = 2048
culation: 4095 * 4098 / (4095 + 3) -1 = 4094
culation: 4097 * 4098 / (4097 + 1) -1 = 4096
t
DO active
t
CLK FE
1
D11
T
D10
CLK/2
359.91 deg
(Pos 4095)
t
DO valid
(Pos 0)
Angle
0 deg
D9
D8
Angular Position Data
D7
1µs
D6
PW
Position =
MIN
D5
8
D4
------------------------ - 1
(
t
t
on
on
D3
Revision 1.5
⋅
+
PW
4098
1/f
t
D2
PWM
off
MAX
)
D1
–
1
D0 OCF COF LIN
st
Device
OFF
OFF
OFF
of 2049 µs resulting in Position = 2048 after the
4096µs
Status Bits
of 3 µs resulting in Position = 4094 after the cal-
of 1 µs resulting in Position = 4096 after the cal-
4097µs
Mag
INC
DEC
Mag
18
Even
PAR
D
Angular Position Data
1
D11
2
nd
Device
2
D10 D9
3
(EQ 1)
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