S-5712ANDL0-M3T1U Datasheet, PDF (13/30 Pages) Seiko Instruments Inc – LOW VOLTAGE OPERATION

LOW VOLTAGE OPERATION BOTH POLES / UNIPOLAR DETECTION TYPE HALL IC
Rev.4.6_00
S-5712 Series
3. Product with N pole detection
3. 1 Product with B_OP = 1.8 mT typ.
Table 21
Item
Operation point^*1
Release point^*2
Hysteresis width^*3
N pole
N pole
N pole
Symbol
B_OPN
B_RPN
B_HYSN
(Ta = +25°C, V_DD = 1.85 V, V_SS = 0 V unless otherwise specified)
Condition
Min.
Typ.
Max. Unit Test Circuit
−
−3.0
−1.8
−0.6
mT
5
−
−2.4
−1.1
−0.1
mT
5
B_HYSN = |B_OPN − B_RPN|
−
0.7
−
mT
5
3. 2 Product with B_OP = 3.0 mT typ.
Table 22
Item
Operation point^*1
Release point^*2
Hysteresis width^*3
N pole
N pole
N pole
Symbol
B_OPN
B_RPN
B_HYSN
(Ta = +25°C, V_DD = 1.85 V, V_SS = 0 V unless otherwise specified)
Condition
Min.
Typ.
Max. Unit Test Circuit
−
−4.0
−3.0
−1.4
mT
5
−
−3.7
−2.2
−1.1
mT
5
B_HYSN = |B_OPN − B_RPN|
−
0.8
−
mT
5
3. 3 Product with B_OP = 4.5 mT typ.
Table 23
Item
Operation point^*1
Release point^*2
Hysteresis width^*3
N pole
N pole
N pole
Symbol
B_OPN
B_RPN
B_HYSN
(Ta = +25°C, V_DD = 1.85 V, V_SS = 0 V unless otherwise specified)
Condition
Min.
Typ.
Max. Unit Test Circuit
−
−6.0
−4.5
−2.5
mT
5
−
−5.5
−3.5
−2.0
mT
5
B_HYSN = |B_OPN − B_RPN|
−
1.0
−
mT
5
*1. B_OPN, B_OPS: Operation points
B_OPN and B_OPS are the values of magnetic flux density when the output voltage (V_OUT) changes after the magnetic flux
density applied to this IC by the magnet (N pole or S pole) is increased (by moving the magnet closer).
Even when the magnetic flux density exceeds B_OPN or B_OPS, V_OUT retains the status.
*2. B_RPN, B_RPS: Release points
B_RPN and B_RPS are the values of magnetic flux density when the output voltage (V_OUT) changes after the magnetic flux
density applied to this IC by the magnet (N pole or S pole) is decreased (the magnet is moved further away).
Even when the magnetic flux density falls below B_RPN or B_RPS, V_OUT retains the status.
*3. B_HYSN, B_HYSS: Hysteresis widths
B_HYSN and B_HYSS are the difference between B_OPN and B_RPN, and B_OPS and B_RPS, respectively.
Remark The unit of magnetic density mT can be converted by using the formula 1 mT = 10 Gauss.
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