3425 Datasheet, PDF (3/12 Pages) Allegro MicroSystems – DUAL, CHOPPER-STABILIZED, ULTRA-SENSITIVE, BIPOLAR HALL-EFFECT SWITCH

3425
DUAL, CHOPPER-STABILIZED,
ULTRA-SENSITIVE,
BIPOLAR HALL-EFFECT SWITCH
ELECTRICAL CHARACTERISTICS over operating temperature range, each switch tested
separately (unless otherwise specified).
Limits
Characteristic
Symbol
Test Conditions
Min. Typ. Max. Units
Supply Voltage Range
Output Leakage Current
Output Saturation Voltage
Output Current Limit
Chopping Frequency
Output Rise Time
Output Fall Time
Total Supply Current
Reverse Battery Current
Zener Voltage
Zener Impedance
V_CC
I_OFF
V_OUT(SAT)
I_OM
f_C
t_r
t_f
I_CC
I_CC
V_Z + V_D
z_z + z_D
Operating, T_J < 170°C¹
V_OUT = 18 V, B < B_RP
I_OUT = 20 mA, B > B_OP
3.3
–
26.5
V
–
<1.0
10
µA
–
225
400
mV
B > B_OP
30
–
55
mA
–
340
–
kHz
R_L = 820 Ω, C_L = 10 pF
–
110
–
ns
R_L = 820 Ω, C_L = 10 pF
–
55
–
ns
Both outputs off, V_CC ≤ 26.5 V
–
3.8
6.0
mA
Both outputs on, V_CC ≤ 26.5 V
–
7.5
10
mA
V_RCC = -18 V
–
2.0
15
mA
I_CC = 15 mA, T_A = 25°C
28
33
37
V
I_CC = 15 mA, T_A = 25°C
–
50
100
Ω
NOTES:1. Supply voltage is limited by allowable package power dissipation as a function of ambient temperature.
2. B_OP = operate point (output turns on); B_RP = release point (output turns off).
3. Typical Data is at T_A = +25°C and V_CC = 12 V and is for design information only.
MAGNETIC CHARACTERISTICS over operating supply voltage and temperature ranges, each
switch tested separately (unless otherwise specified).
Limits
Characteristic
Symbol
Test Conditions
Min. Typ. Max. Units
Operate Point
Release Point
Hysteresis
Operate Differential
Release Differential
Symmetry
B_OP1
B_OP2
B_RP1
B_RP2
B_hys
B_OP(dif)
B_RP(dif)
B_sym
B_OP – B_RP
B_OP1 – B_OP2
B_RP1 – B_RP2
B_OP + B_RP
–
8.0
24
G
–
11
24
G
-24
-11
–
G
-24
-8.0
–
G
5.0
19
35
G
–
-2.0
±30
G
–
-3.3
±30
G
–
–
±30
G
NOTES:1. As used here, negative flux densities are defined as less than zero (algebraic convention) and -50 G is less than +10 G.
2. Typical Data is at T_A = +25°C and V_CC = 12 V and is for design information only.
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