A1308 and
A1309
Linear Hall-Effect Sensor ICs with Analog Output
Available in a Miniature, Low-Profile Surface-Mount Package
OPERATING CHARACTERISTICS: Valid through TA , CBYPASS = 0.1 µF, VCC = 5 V, unless otherwise noted
Characteristics
ELECTRICAL CHARACTERISTICS
Supply Voltage
Symbol
Test Conditions
Min.
Typ.
Max.
Unit [1]
VCC
4.5
–
5.0
–
5.5
3
V
V
K temp. option tested at TA = 25°C to 125°C
(device powers on); L temp. option tested at TA =
25°C to 150°C (device powers on)
VUVLOHI
Undervoltage Threshold[2]
K temp. option tested at TA = 25°C to 125°C
VUVLOLO (device powers off); L temp. option tested at TA =
25°C to 150°C (device powers off)
2.5
–
–
V
Supply Current
ICC
tPO
No load on VOUT
TA = 25°C, CL(PROBE) = 10 pF
TA = 25°C
–
9
50
–
11.5
–
mA
µs
Power-On Time[3][4]
–
V
CC Ramp Time[3][4]
CC Off Level[3][4]
tVCC
VCCOFF
tCLP
VZ
0.005
100
0.55
–
ms
V
V
TA = 25°C
0
–
6
–
–
–
Delay to Clamp[3][4]
TA = 25°C, CL = 10 nF
TA = 25°C, ICC = 14.5 mA
Small signal –3 dB
TA = 25°C
30
7.3
20
400
µs
Supply Zener Clamp Voltage
Internal Bandwidth[3]
–
V
BWi
fC
–
kHz
kHz
Chopping Frequency[3][5]
OUTPUT CHARACTERISTICS
–
VCC = 5 V, TA = 25°C, CBYPASS = open,
Sens ≥ 1.3 mV/G, no load on VOUT
–
–
–
–
1.7
2.8
1.5
2.5
–
–
–
–
G
Output Referred Noise[3][6]
VN
VCC = 5 V, TA = 25°C, CBYPASS = open,
G
Sens = 0.5 mV/G, no load on VOUT
VCC = 5 V, TA = 25°C, CBYPASS = open,
Sens ≥ 1.3 mV/G, no load on VOUT
mG/√Hz
mG/√Hz
Input Referred RMS Noise Density[3]
VNRMS
VCC = 5 V, TA = 25°C, CBYPASS = open,
Sens = 0.5 mV/G, no load on VOUT
DC Output Resistance[3]
Output Load Resistance[3]
Output Load Capacitance[3]
ROUT
RL
–
3
–
–
Ω
VOUT to GND
VOUT to GND
4.7
–
kΩ
CL
–
–
10
nF
VCLPHIGH TA = 25°C, RL=10kΩ(VOUT to GND)
VCLPLOW TA = 25°C, RL=10kΩ(VOUTto VCC)
A1308LLHLX-05-T
4.35
0.40
0.43
1.17
1.17
2.4
4.5
0.55
0.5
1.3
1.3
2.5
2.5
3.125
3.125
5
4.65
0.70
0.57
1.43
1.43
2.6
V
Output Voltage Clamp[7][8]
V
mV/G
mV/G
mV/G
mV/G
mV/G
mV/G
mV/G
mV/G
mV/G
mV/G
mV/G
mV/G
V
A1308KUA-1-T
A1308LLHLX-1-T
A1308LLHLX-2-T
A1308KUA-2-T
2.4
2.6
A1308KUA-3-T
3.025
3.025
4.85
4.85
8.73
8.73
–9.27
2.488
3.225
3.225
5.15
5.15
9.27
9.27
–8.73
2.512
Sensitivity
Sens
TA = 25°C
A1308LLHLX-3-T
A1308KUA-5-T
A1308LLHLX-5-T
A1309LLHLX-9-T
A1309KUA-9-T
A1309LLHLX-RP9-T
TA = 25°C
5
9
9
–9
Quiescent Voltage Output (QVO)
Sensitivity Temperature Coefficient
VOUT(Q)
TCSens
2.5
Programmed at TA = 125°C (K temp. option) or
150°C (L temp. option), calculated relative to
Sens at 25°C
0.08
0.12
0.16
%/°C
Continued on the next page…
Allegro MicroSystems, LLC
115 Northeast Cutoff
4
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com