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A1391SEHLT-T Datasheet

  • A1391SEHLT-T

  • Micro Power 3V Linear Hall Effect Sensor with Tri-State Outp...

  • 15頁(yè)

  • ALLEGRO   ALLEGRO

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A1391 and A1392
Micro Power 3 V Linear Hall Effect Sensor with Tri-State Output
and User-Selectable Sleep Mode
These 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 A1391 and A1392 minimize current consumption to less than
25
渭A
through the addition of a user-selectable sleep mode. This makes these devices per-
fect for battery-operated applications such as: cellular phones, digital cameras, and portable
tools. End users can control the current consumption of the A1391 and A1392 by applying
a logic level signal to the 爐 爐 爐 爐 爐 pin. The outputs of the devices are not valid (high-imped-
SLEEP
爐爐爐
ance mode) during sleep mode. The high-impedance output feature allows the connection of
multiple A1391 and A1392 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.
Despite the low power consumption of the circuitry in the A1391 and A1392, 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-com-
pensating 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.
This device is available in a small 2.0 脳 3.0 mm, 0.75 mm nominal height micro leaded pack-
age (MLP). It is Pb (lead) free, with 100 % matte tin leadframe plating.
Package EH, 6-pin MLP/DFN
VCC
OUT
GND
1
2
3
6
5
4
VREF
SLEEP
GND
ABSOLUTE MAXIMUM RATINGS
*
Supply Voltage, V
CC
.............................................
8 V
Reverse-Supply Voltage, V
RCC
.......................
鈥?.1 V
Ratiometric Supply Reference Voltage, V
REF
......
7 V
Reverse-Ratiometric Supply
Reference Voltage, V
RREF
.........................
鈥?.1 V
Logic Supply Voltage, V
爐爐 爐 爐 P
SLEE爐
爐爐爐
(V
CC
> 2.5 V)...............................................
32 V
Reverse-Logic Supply Voltage, V
R爐爐 爐 爐 P
.........
鈥?.1 V
SLEE爐
爐爐爐爐
Output Voltage, V
OUT
............................
V
CC
+ 0.1 V
Reverse-Output Voltage, V
ROUT
......................
鈥?.1 V
Temperatures
Operating Ambient, T
A
, Range S ....
鈥?0潞C to 85潞C
Junction, T
J(MAX)
.......................................165潞C
Storage, T
S
.................................
鈥?5潞C to 170潞C
*All ratings with reference to ground.
Features and Benefits
鈥?High-impedance output during sleep mode
鈥?Compatible with 2.5 to 3.5 V power supplies
鈥?10 mW power consumption in the active mode
鈥?Miniature MLP package
鈥?Ratiometric output scales with the ratiometric supply reference voltage (VREF pin)
鈥?Temperature-stable quiescent output voltage and sensitivity
鈥?Wide ambient temperature range: 鈥?0擄C to 85擄C
鈥?ESD protection greater than 3 kV
鈥?Solid-state reliability
鈥?Preset sensitivity and offset at final test
Use the following complete part numbers when ordering:
Part Number
A1391SEHLT-T
A1392SEHLT-T
(mV / G, Typ.)
Sensitivity
Packing*
7-in. reel, 3000 pieces/reel
7-in. reel, 3000 pieces/reel
1.25
2.50
*Contact Allegro for additional packing options.
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
A1391-DS

A1391SEHLT-T 產(chǎn)品屬性

  • Current Sensor

  • 1

  • 傳感器，轉(zhuǎn)換器

  • 磁性 - 霍爾效應(yīng)，數(shù)字式開關(guān)，線性，羅盤 (IC)

  • -

  • 1.25mV/G

  • 線性

  • 2.5 V ~ 3.5 V

  • 3.2mA

  • -

  • 三態(tài)

  • -

  • -20°C ~ 85°C

  • 6-WFDFN 裸露焊盤

  • 6-MLP/DFN（2x3）

  • Digi-Reel?

  • 620-1031-6

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