IC-LNB_13 Datasheet, PDF (10/35 Pages) IC-Haus GmbH – 18-BIT OPTO ENCODER WITH SPI AND SER/PAR INTERFACES

iC-LNB 18-BIT OPTO ENCODER ^preliminary
WITH SPI AND SER/PAR INTERFACES
Rev A1, Page 10/35
ELECTRICAL CHARACTERISTICS
Operating conditions: VDDA = 4 V to 5.5 V, VDD = 3 V to 5.5 V, GNDA = GND, Tj = -40 °C to 125 °C, unless otherwise specified.
Item Symbol Parameter
No.
Conditions
Min. Typ. Max.
Output Voltage PSIN, NSIN, PCOS, NCOS
401 Vdc()
DC-Voltage at all Outputs
Offset adjusted to VDDAH
47
50
53
402 Vpk()
Permissible Signal Amplitude DC level = VDDA/2
0.5 0.6
403 I()mx
Permissible Output Current
-1
1
404 Ri()
Output Resistor
I() = -1 . . . 1 mA
75 200
LED Power Control LED, Error Message ERR
501 Imx()
Permissible LED Current at LED
-100
0
502 Iop()
LED Current Control Range
ERRS (internal) = 0, V(LED) > Vs(LED)
-50
-1
503 Vs()
Saturation Voltage at LED
Vs() = VDDA - V(LED); I() = -50 mA
1
504 tr()
Rise Time LED Current
I(LED): 0 % → 90 %
0.8 1.5
505 tset()
Settling Time of LED Control
amplitude at PSIN, NSIN, PCOS and NCOS
300
Loop
from 50 % to 100 % of setpoint
506 Vs()hi
Saturation Voltage hi at ERR Vs()hi = VDD - V(ERR);
400
VDD = 3 . . . 4 V, I() = 1.5 mA
VDD = 4 . . . 5.5 V, I() = 2.5 mA
507 Isc()hi
Short-Circuit Current hi at ERR
-100
-1.5
508 Vs()lo
Saturation Voltage lo at ERR VDD = 3 . . . 4 V, l() = 1.5 mA
400
VDD = 4 . . . 5.5 V, l() = 2.5 mA
509 Isc()lo
Short-Circuit Current lo at ERR
1.5
100
Interpolator
701 AAabs Absolute Angular Position
referenced to a Sin/Cos signal period
Accuracy
RESIPO = 10 (6 bit interpolation)
2.8
RESIPO = 01 (7 bit interpolation)
1.4
RESIPO = 00 (8 bit interpolation)
0.7
702 AArel
Relative Angular Error
referenced to output period T, see Figure 1
RESIPO = 10 (6 bit interpolation)
1
RESIPO = 01 (7 bit interpolation)
2
RESIPO = 00 (8 bit interpolation)
4
703 AAhys
Angular Hysteresis
referenced to output period T, see Figure 1
RESIPO = 10 (6 bit interpolation)
2.8
RESIPO = 01 (7 bit interpolation)
1.4
RESIPO = 00 (8 bit interpolation)
0.7
704 tw()hi
Duty Cycle
referenced to output period T, see Figure 1
50
RESIPO = 11 (interpolation active)
705 t_AB
Phase Shift A versus B
referenced to output period T, see Figure 1
25
RESIPO = 11 (interpolation active)
706 f_max
FlexCount
Maximum Permissible Sin/Cos
Frequency
RESIPO = 10 (6 bit interpolation)
RESIPO = 01 (7 bit interpolation)
RESIPO = 00 (8 bit interpolation)
f_oipo /64
f_oipo /128
f_oipo /256
801 _AArelFlex
Additional Relative Angular Error referenced to output period T, see Figure 1
of FlexCount
all resolutions
0
25
all binary resolutions
0
maximum resolution - 4
25
Unit
%VDDA
V
mA
Ω
mA
mA
V
ms
µs
mV
mA
mV
mA
DEG
DEG
DEG
%
%
%
DEG
DEG
DEG
%
%
kHz
kHz
kHz
%
%
%
802 tp_Flex()
803 f_max
Propagation Delay FlexCount
Maximum Permissible Sin/Cos
Frequency
for RESIPO = 00 (8 bit interpolation):
RESSUB = 0x01387 (resolution 5 000)
RESSUB = 0x04E1F (resolution 20 000)
RESSUB = 0x09C3F (resolution 40 000)
RESSUB = 0x3FFFB (resolution 2¹⁸ - 4)
RESIPO = 10 (6 bit interpolation)
RESIPO = 01 (7 bit interpolation)
RESIPO = 00 (8 bit interpolation)
0.48 %
1.92 %
3.85 %
25
%
1/f_oflex
f_oflex /64
kHz
f_oflex /128
kHz
f_oflex /256
kHz