User guide

5
Oct. 2009 Rev. 1. 2 BCD Semiconductor Manufacturing Limited
SINGLE PHASE HALL EFFECT LATCH AH477A
Data Sheet
Parameter Symbol Test Condition Min Typ Max Unit
Output Saturation Voltage (Sink)
V
SAT
V
CC
=14V, I
O
=200mA 0.45 0.65 V
Output Saturation Voltage (Drive)
V
CC
=14V, I
O
=200mA V
CC
-
1.3
V
CC
-
1.0
V
CC
V
Supply Current I
CC
V
CC
=20V, Output Open 13.5 16 mA
Output Rise Time tr R
L
=820Ω, C
L
=20pF 0.5 1.0 µs
Output Fall Time tf R
L
=820Ω, C
L
=20pF 0.5 1.0 µs
(T
A
=25
o
C, V
CC
=14V, unless otherwise specified)
Electrical Characteristics
Parameter Symbol Grade Min Typ Max Unit
Operating Point
B
OP
A5 70
Gauss
B 100
Releasing Point
B
RP
A-70 -5
Gauss
B -100
Hysteresis B
HYS
70 Gauss
Magnetic Characteristics
(T
A
=25
o
C)
Test Circuit
N
S
Marking Side
AH477A
V
CC
DO DOB GND
12
3
4
C1
0.1µF
V
CC
820Ω