Hallogic Hall Effect Sensor Assembly
OHB900
Electrical Characteristics
(Vcc = 4.5 V to 24 V, T
A
= 25
° C
unless otherwise noted)
Symbol
I
CC
V
OL
I
OH
t
r
t
f
Parameter
Supply Current
Output Saturation Voltage
Output Leakage Current
Output Rise Time
Output Fall Time
Min
Typ
4
100
0.1
0.21
0.10
Max
7
400
10.0
1.00
1.00
Units
mA
mV
µA
µs
µs
Test Conditions
Vcc = 24 V, Output Off
Vcc = 4.5 V, I
OL
= 20 mA, Slot Open
Vcc = 4.5 V, V
OUT
= 24 V, Slot Blocked
(1)
R
L
= 820
Ω,
C
L
= 20 pF
(1) Slot blocked with a ferrous material to interrupt magnetic flux.
B
OP
B
RP
Rise & Fall Time vs Temperature
350
Magnetic Field
300
V
OH
90%
Tf
V
OL
10%
Tr
10%
90%
250
Typical Time (ns)
Rise Time
Fall Time
Right
Operate
Point
Minimum
Maximum
0.073"
[1,85mm]
0.003"
[0,08mm]
Right
Release
Point
0.045"
[1,14mm]
-0.005"
[-1,27mm]
Left
Release
Point
-0.045"
[-1,14mm]
0.005"
[1.27mm]
Left
Operate
Point
-0.073"
[-1,85mm]
-0.003"
[-0,08mm]
Vcc 1
820 Ohm
U.U.T.
Ground 2
Output
3
20 pf
200
150
Measurements are referenced to Center Line.
ROP
RRP
100
M
S
Center Line
50
LOP
LRP
Vane - Material = 1018 Cold Rolled Steel - 0.03" [0.76mm] Thick
Location = 0.50" [1.27mm] from Bottom of Slot
0
-40°C
0°C
40°C
80°C
120°C
150°C
Temperature (°C)
Icc vs Temperature
9.0
8.0
Saturation Voltage vs Temperature
0.40
0.35
Typical Saturation Voltage (V)
7.0
6.0
Icc ON (mA)
Icc OFF (mA)
R
L
= 820
ohms
0.30
Typical Icc (mA)
5.0
4.0
3.0
2.0
1.0
0.0
-40°C
0°C
40°C
80°C
120°C
150°C
0.25
0.20
0.15
0.10
-40°C
0°C
40°C
80°C
120°C
150°C
Temperature (°C)
Temperature (°C)
OPTEK Technology Inc.—
1645 Wallace Drive, Carrollton, Texas 75006
Phone: (800) 341-4747 FAX: (972) 323– 2396 sensors@optekinc.com www.optekinc.com
Issue A
Page 2
02/ 05
OPTEK [ OPTEK TECHNOLOGIES ]
