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IC-PVL Datasheet, PDF (26/33 Pages) IC-Haus GmbH – LINEAR/OFF-AXIS BATTERY-BUFFERED HALL MULTITURN ENCODER
◁
iC-PVL LINEAR/OFF-AXIS
preliminary
BATTERY-BUFFERED HALL MULTITURN ENCODER
CURRENT CONSUMPTION IN BATTERY MODE
Rev B3, Page 26/33
Serial Interface Mode (SEL = LOW)
In this chapter, all values for angular velocity and ac-
celeration refer to one magnetic period, i.e. one north-
south pole pair sequence. One period is 360°. A ve-
locity of one pole pair per second relates to 360°/s =
1 Hz = 60 1/min.
The current consumption of the iC-PVL can be config-
ured by parameter A_MAX. Besides the current con-
sumption, this parameter sets the maximum angle ac-
celeration (from complete halt) supported by the iC-PVL
in the respective configuration. The relationship be-
tween maximum acceleration and current consump-
tion is shown in Table 33. For accelerations below
48 · 103rad/s2, the typical current consumption is below
10 µA.
For applications where only sporadic motor movement
is expected during battery supply, Table 33 mainly de-
fines the current consumed by iC-PVL. Additionally,
Table 34 gives typical values in case of enduring move-
ment at a certain angular velocity during battery supply.
Note: A magnetic field according to the specifications
should be provided any time (see Elec. Char. No.
102). If a suitable magnetic target can not be provided
during shipment or storage, use the sleep command
(refer to Table 30) or disconnect the battery.
A_MAX
Code
000
001
010
011
100
101
110
111
Addr. 0x03; bit 5:3
◦
αmax [ s2 ]
αmax
[
rad
s2
]
160 · 106
40 · 106
10 · 106
2.5 · 106
625 · 103
160 · 103
40 · 103
10 · 103
3000 · 103
760 · 103
190 · 103
48 · 103
12 · 103
3 · 103
0.75 · 103
0.2 · 103
typ
Iavg [µA]
52
26
14
7
4
2.5
2
1.5
max
Iavg [µA]
72
36
18
10
6
4
3
2.5
Table 33: Maximum supported angular acceleration
(from shaft halt) and average current con-
sumption on shaft halt or slow angular veloc-
ity. V(VBAT) = 3.6 V, V(PRE) < 0.5 V.
I(VBAT) for angular velocity [RPM]
f [RPM]
fmag [Hz]
2-pole magnet magnetic
input freq.
0
0
< 125
<2
< 250
<4
< 500
<8
< 1000
< 16
< 2000
< 33
< 4000
< 66
< 8000
< 133
< 16000
< 266
< 32000
< 533
< 64000
< 1066
< 128000
< 2133
< 480000
< 8000
Iavg [µA]
AMAX =
110
2
2
2
2.5
4
7
14
26
52
100
200
400
800
Iavg [µA]
AMAX =
101
2.5
2.5
2.5
2.5
4
7
14
26
52
100
200
400
800
Iavg [µA]
AMAX =
100
4
4
4
4
4
7
14
26
52
100
200
400
800
Iavg [µA]
AMAX =
011
7
7
7
7
7
7
14
26
52
100
200
400
800
Iavg [µA]
AMAX =
010
14
14
14
14
14
14
14
26
52
100
200
400
800
Iavg [µA]
AMAX =
001
26
26
26
26
26
26
26
26
52
100
200
400
800
Iavg [µA]
AMAX =
000
52
52
52
52
52
52
52
52
52
100
200
400
800
Table 34: Average current consumption vs. angular velocity. Typical values for V(VBAT) = 3.6 V, Tj = 27 °C and
V(PRE) < 0.5 V.
Parallel Encoder Mode (SEL = HIGH)
The current consumption in parallel encoder mode is
directly proportional to the sampling frequency, fs. The
typical average current consumption of iC-PVL is calcu-
lated as shown below (V(VBAT) = 3.6 V, Tj = 27 °C):
Iavg[µA] = 25 · fs[kHz]
For instance, at a sampling frequency of 1 000 samples
per second: fs = 1 kHz and I = 25 µA. At 100 samples
per second: I = 2.5 µA.
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