as5140 austriamicrosystems, as5140 Datasheet - Page 22

• Manufacturer Part Number: as5140
• Description: 10-bit 360? Programmable Magnetic Rotary Encoder For High Ambient Temperatures Up To 150?c
• Manufacturer: austriamicrosystems

AS5140H 10-BIT PROGRAMMABLE MAGNETIC ROTARY ENCODER
16.7 Electrical System Specifications
(operating conditions: T
Revision 1.1, 02-03-2007
Parameter
Resolution
7 bit
8 bit
9 bit
10 bit
Integral non-linearity (optimum)
Integral non-linearity (optimum)
Integral non-linearity
Differential non-linearity
Transition noise
Hysteresis
On voltage; 300mV typ. hysteresis
Off voltage; 300mV typ. hysteresis
Power-up time
System propagation delay
absolute output
System propagation delay
incremental output
Sampling rate for absolute
output
Read-out frequency
Power-on reset thresholds
1023
512
0
0 °
α
10bit code
2
1
0
am b
= -40 to +150°C, VDD5V = 3.0-3.6V (3V operation) VDD5V = 4.5-5.5V (5V operation) unless otherwise noted)
Figure 23: Integral and differential non-linearity example (exaggerated curve)
0.35°
TN
Symbol
INL
INL
INL
t
RES
DNL
Hyst
LSB
t
CLK
PwrUp
INL
TN
V
V
delay
f
S
temp
on
off
opt
DNL+1LSB
Min
1,37
1.08
9.90
9.38
180°
Actual curve
Ideal curve
512
2.813
1.406
0.703
0.352
0.704
10.42
10.42
Typ
2.2
1.9
www.austriamicrosystems.com
± 0.176
10.94
11.46
± 0.5
± 0.9
± 1.4
Max
0.12
192
2.9
2.6
10
50
48
1
Unit
RMS
MHz
Deg
deg
deg
deg
deg
deg
deg
kHz
ms
µs
µs
bit
V
V
Until offset compensation finished
Note
0.352 deg
Adjustable resolution only available for incremental
output modes;
Least significant bit, minimum step
Maximum error with respect to the best line fit.
Verified at optimum magnet placement, T
Maximum error with respect to the best line fit.
Verified at optimum magnet placement ,
T
Best line fit = (Err
Over displacement tolerance with 6mm diameter
magnet, T
10bit, no missing codes
RMS equivalent to 1 sigma
Incremental modes only
DC supply voltage 3.3V (VDD3V3)
DC supply voltage 3.3V (VDD3V3)
Includes delay of ADC and DSP
Calculation over two samples
Internal sampling rate, T
Internal sampling rate, T
Max. clock frequency to read out serial data
amb
= -40 to +150°C
360 °
amb
1023
= -40 to +150°C
max
– Err
α
amb
amb
min
[degrees]
= 25°C
= -40 to +150°C
) / 2
amb
Page 22 of 26
=25 °C.