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A1393SEHLX-T

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
Description
The A139x family of linear Hall effect sensor integrated circuits
(ICs) provide a voltage output that is directly proportional to
an applied magnetic field. Before amplification, the sensitivity
of typical Hall effect ICs (measured in mV/G) is directly
proportional to the current flowing through the Hall effect
transducer element inside the ICs. In many applications, it
is difficult to achieve sufficient sensitivity levels with a Hall
effect sensor IC without consuming more than 3 mA of current.
The A139x minimize current consumption to less than 25 μA
through the addition of a user-selectable sleep mode. This makes
these devices perfect for battery-operated applications such as:
cellular phones, digital cameras, and portable tools. End users
can control the current consumption of the A139x by applying a
logic level signal to the S
¯
¯
L
¯
¯
E
¯
¯
E
¯
¯
P
¯
pin. The outputs of the devices
are not valid (high-impedance mode) during sleep mode. The
high-impedance output feature allows the connection of multiple
A139x Hall effect devices to a single A-to-D converter input.
The quiescent output voltage of these devices is 50 % nominal of
the ratiometric supply reference voltage applied to the VREF pin
of the device. The output voltage of the device is not ratiometric
with respect to the SUPPLY pin.
1391-DS, Rev. 7
Features and Benefits
▪ High-impedance output during sleep mode
▪ Compatible with 2.5 to 3.5 V power supplies
▪ 10 mW power consumption in the active mode
▪ Miniature MLP/DFN package
▪ Ratiometric output scales with the ratiometric supply
reference voltage (VREF pin)
▪ Temperature-stable quiescent output voltage and
sensitivity
▪ Wide ambient temperature range: –20°C to 85°C
▪ ESD protection greater than 3 kV
▪ Solid-state reliability
▪ Preset sensitivity and offset at final test
Micro Power 3 V Linear Hall Effect Sensor ICs
withTri-State Output and User-Selectable Sleep Mode
Continued on the next page…
Package: 6 pin MLP/DFN (suffix EH)
Functional Block Diagram
Approximate scale
A1391, A1392, A1393, and A1395
Amp Out
VCC
OUT
GND
Filter
Dynamic Offset
Cancellation
Gain
Offset
Hall Element
Regulator
Programming Logic
Circuit Reference Current
To all subcircuits
R
Ratio
/ 2
R
Ratio
/ 2
VREF
SLEEP
Micro Power 3 V Linear Hall Effect Sensor ICs
with Tri-State Output and User Selectable Sleep Mode
A1391, A1392,
A1393, and A1395
2
Allegro MicroSystems, LLC
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
Terminal List Table
Pin Name Function
1 VCC Supply
2 OUT Output
3 GND Ground
4 GND Ground
5
¯
S
¯
¯
L
¯
¯
E
¯
¯
E
¯
¯
P
¯
Toggle sleep mode
6 VREF Supply for ratiometric reference
Despite the low power consumption of the circuitry in the A139x,
the features required to produce a highly-accurate linear Hall effect
IC have not been compromised. Each BiCMOS monolithic circuit
integrates a Hall element, improved temperature-compensating
circuitry to reduce the intrinsic sensitivity drift of the Hall element,
a small-signal high-gain amplifier, and proprietary dynamic
offset cancellation circuits. End of line, post-packaging, factory
programming allows precise control of device sensitivity and
offset.
These devices are available in a small 2.0 × 3.0 mm, 0.75 mm nominal
height microleaded package (MLP/DFN). It is Pb (lead) free, with
100% matte tin leadframe plating.
Absolute Maximum Ratings*
Characteristic Symbol Notes Rating Unit
Supply Voltage V
CC
8V
Reverse-Supply Voltage V
RCC
–0.1 V
Ratiometric Supply Reference Voltage V
REF
7V
Reverse-Ratiometric Supply Reference Voltage V
RREF
–0.1 V
Logic Supply Voltage V
¯S¯ ¯L¯ ¯E¯ ¯E¯ ¯P¯
(V
CC
> 2.5 V) 32 V
Reverse-Logic Supply Voltage V
R¯S¯ ¯L¯ ¯E¯ ¯E¯ ¯P¯
–0.1 V
Output Voltage V
OUT
V
CC
+ 0.1 V
Reverse-Output Voltage V
ROUT
–0.1 V
Operating Ambient Temperature T
A
Range S –20 to 85 ºC
Junction Temperature T
J
(MAX) 165 ºC
StorageTemperature T
stg
–65 to 170 ºC
*All ratings with reference to ground
Selection Guide
Part Number
Sensitivity
(mV / G, Typ.)
Package Packing
1
A1391SEHLT-T
2
1.25
DFN/MLP 2
×
3 mm; 0.75 mm nominal height
7-in. reel, 3000 pieces/reel
A1392SEHLT-T
2
2.50
DFN/MLP 2
×
3 mm; 0.75 mm nominal height
7-in. reel, 3000 pieces/reel
A1393SEHLT-T
2
5
DFN/MLP 2
×
3 mm; 0.75 mm nominal height
7-in. reel, 3000 pieces/reel
A1395SEHLT-T
2
10
DFN/MLP 2
×
3 mm; 0.75 mm nominal height
7-in. reel, 3000 pieces/reel
1
Contact Allegro
™
for additional packing options.
2
Allegro products sold in DFN package types are not intended for automotive applications.
6
5
1
2
34
VCC
OUT
GND
VREF
GND
SLEEP
Description (continued)
Pin-out Diagram
Micro Power 3 V Linear Hall Effect Sensor ICs
with Tri-State Output and User Selectable Sleep Mode
A1391, A1392,
A1393, and A1395
3
Allegro MicroSystems, LLC
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
Device Characteristics Tables
ELECTRICAL CHARACTERISTICS valid through full operating ambient temperature range, unless otherwise noted
Characteristic Symbol Test Conditions Min. Typ.
1
Max. Units
Supply Voltage V
CC
2.5 – 3.5 V
Nominal Supply Voltage V
CCN
– 3.0 – V
Supply Zener Clamp Voltage V
CCZ
I
CC
= 7 mA, T
A
= 25°C 6 8.3 – V
Ratiometric Reference Voltage
2
V
REF
2.5 – V
CC
V
Ratiometric Reference Zener Clamp Voltage V
REFZ
I
VREF
=
3 mA, T
A
= 25°C 6 8.3 – V
¯
S
¯
¯
L
¯
¯
E
¯
¯
E
¯
¯
P
¯
Input Voltage
–0.1 – V
CC
+ 0.5 V
¯
S
¯
¯
L
¯
¯
E
¯
¯
E
¯
¯
P
¯
Input Threshold
V
INH
For active mode – 0.45 × V
CC
–V
V
INL
For sleep mode – 0.20 × V
CC
–V
Ratiometric Reference Input Resistance R
REF
V
SLEEP
> V
INH
, V
CC
=
V
CCN,
T
A
= 25°C
250 – – k
V
SLEEP
< V
INL,
V
CC
=
V
CCN,
T
A
= 25°C
–5 –M
Chopper Stabilization Chopping Frequency f
C
V
CC
=
V
CCN
, T
A
= 25°C – 200 – kHz
¯
S
¯
¯
L
¯
¯
E
¯
¯
E
¯
¯
P
¯
Input Current
I
SLEEP
V
SLEEP
= 3 V, V
CC
= V
CCN
–1 –A
Supply Current
3
I
CC
V
SLEEP
< V
INL,
V
CC
=
V
CCN,
T
A
= 25°C
– 0.025 – mA
V
SLEEP
> V
INH
, V
CC
=
V
CCN,
T
A
= 25°C
– 3.2 – mA
Quiescent Output Power Supply Rejection
4
PSR
VOQ
f
AC
< 1 kHz – –60 – dB
1
Typical data are for initial design estimations only, and assume optimum manufacturing and application conditions, such as T
A
= 25°C. Performance
may vary for individual units, within the specified maximum and minimum limits.
2
Voltage applied to the VREF pin. Note that the V
REF
voltage must be less than or equal to V
cc
. Degradation in device accuracy will occur with applied
voltages of less than 2.5 V.
3
If the VREF pin is tied to the VCC pin, the supply current would be I
CC
+ V
REF
/ R
REF
4
f
AC
is any AC component frequency that exists on the supply line.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

A1393SEHLX-T

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Description:
SENSOR HALL ANALOG 6MLP/DFN
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