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GMR Switch™ Precision Digital Sensors
NVE Technical Video GMR Switch Sensor Demonstration
Unmatched Sensitivity and Precision

GMR Switches integrate GMR sensor elements with digital signal processing electronics. These sensors are more precise than other magnetic sensors, and magnetic field operate points are stable over voltage and temperature extremes. GMR Switches can operate over a wide range of magnetic fields, and are available in SOIC8, MSOP8, 2.5 mm x 2.5 mm TDFN6 packages, or 1.1 mm x 1.1 mm ULLGA packages.

NVE offers five series of GMR Switch sensors:
  • AD-Series TDFN/MSOP Digital Sensors; 4.5 V – 30 V supply voltage
  • ADL-Series 1.1 mm x 1.1 mm Digital Sensors; 2.4 – 3.6 supply voltage; duty-cycled versions available
  • ADV001-Series bipolar (south field ON, north field OFF) TDFN Digital Sensors
  • AFL-Series TDFN digital sensors; 0.9 V – 5.5 V supply voltage
  • AHL-Series 1.1 x 1.1 mm Low-Voltage Digital Sensors; 0.9 V – 2.4 V supply voltage; duty-cycled versions available
AD-Series Precision GMR Digital Sensors are the industry standard for sensitivity and precision. Models available in a wide variety of magnetic operate points, output configurations, and package types. The most popular part types are listed below:

AD-Series TDFN/MSOP Digital Sensors
Part Number
Typical Magnetic Operate Point (Oe)
Typical Magnetic Release Point (Oe)
Output Type
Max. Operating Temperature (C)
Package
20
10
Sink
125
MSOP8
40
25
Sink
125
MSOP8

AD021-00

20
10
Sink
125
MSOP8
40
25
Sink
125
MSOP8
28
14
Sink
125
MSOP8
28
14
Sink
125
TDFN6
AD621-00
20
10
Sink+Source
125
MSOP8
AD824-00
28
14
2 Sinks +SCP
150
MSOP8
11
5
Sink
150
MSOP8

 AD‑Series data sheet (.pdf)

 Evaluation Kit


ADL-Series sensors are internally duty cycled versions conserve power. Two different duty-cycle frequencies are available (ADL0xx and ADL1xx Series), offering a trade-off between update frequency and power consumption. An integrated latch ensures the output is available continuously. A continuously-operating version (the ADL9xx Series) is available, with a frequency response of 250 kHz. Key specifications are:
  • 1.1 mm x 1.1 mm x 0.45 mm ULLGA package
  • 2.4 - 3.6 V supply voltage
  • Typ. power consumption as low as 72 nW at 2.4 V
  • 40, 28, or 20 Oe operate points
  • Current-sinking output up to 100 µA
  • -40°C to +125°C temperature range

NVE Technical Video ADL-Series Nanopower
Magnetic Sensor Demonstration
NVE Technical Video Sensors run forever
on a watch battery
NVE Technical Video ADL-Series Sensor
Evaluation Kit


ADL-Series 1.1 mm x 1.1 mm Digital Sensors
Part
Number
Typ. Magnetic Operate Point (Oe)
Max. Quiescent
 Current at 2.4 V (A)
Max. Quiescent
 Current at 3.6 V (A)
Typ. Update Frequency
Package
20
0.160
0.305
55 Hz
1.1 mm x 1.1 mm ULLGA
ADL022-14E
40
0.160
0.305
55 Hz
1.1 mm x 1.1 mm ULLGA

ADL024-14E

28
0.160
0.305
55 Hz
1.1 mm x 1.1 mm ULLGA
20
0.060
0.160
30 Hz
1.1 mm x 1.1 mm ULLGA
ADL122-14E
40
0.060
0.160
30 Hz
1.1 mm x 1.1 mm ULLGA

ADL124-14E

28
0.060
0.160
30 Hz
1.1 mm x 1.1 mm ULLGA
20
50
120
Continuous
1.1 mm x 1.1 mm ULLGA
ADL922-14E
40
50
120
Continuous
1.1 mm x 1.1 mm ULLGA

ADL924-14E

28
50
120
Continuous
1.1 mm x 1.1 mm ULLGA

 ADL‑Series data sheet (.pdf)

ADT Evaluation Kit
Evaluation Kit

 ADL021 Evaluation Boards


The ADV001-00E is a GMR Digital Switch using a bipolar output GMR material. This material allows the sensor to maintain an operate point with the application of a negative (south) magnetic field, and a release point with the application of a positive (north) magnetic field. The part is ideal for use with magnetic encoders that have alternating north/south poles, or in any other application where one polarity of field is required to turn the part on, and the opposite polarity is required to turn it off. Available in RoHS-compliant MSOP8 or 2.5 mm x 2.5 mm TDFN packages.

Summary specifications are as follows:

ADV001-Series Bipolar Digital Sensors
Parameter
Min.

Typ.

Max.
Units
Magnetic Operate Point
-10
-4
0
|Oersteds|
Magnetic Release Point
0
4
10
|Oersteds|

Operate/Release Differential

2
12
|Oersteds|
Operating Supply Voltage
4.5
30
Volts
Quiescent Supply Current (Vcc = 12V)
2.5
4.5
mA
Output Drive Current
0
20
mA
VOL at 20 mA Output Drive Current    
0.4
Volts
Frequency Response
100
 
KHz
Temperature Range of Operation
-40
125
C

 ADV001‑Series data sheet (.pdf)

 Demonstration Video

 Buy ADV001-00E Online


AFL-Series
Low-Voltage GMR Digital Sensors are available in a wide variety of voltages, output types, magnetic operate points, and package types. The most popular part types are summarized below:
 
AFL-Series TDFN Digital Sensors
Part Number
 Voltage Range
Output Type
Magnetic Operate Point (Oe)
Package
0.9 V 1.3 V
Normally Off,
Current Sink
10
TDFN6

AFL000-01

0.9 V 1.3 V
Normally Off,
Current Sink
10
Die (IC only)
AFL002-10E
0.9 V 1.3 V
Normally Off,
Current Sink
28
TDFN6
AFL020-00E
0.9 V 1.3 V
Normally On,
Current Source
10
MSOP8
AFL030-00E
0.9 V 1.3 V
Normally Off,
Current Source
10
MSOP8
AFL100-00E
1.8 V 2.5 V
Normally Off,
Current Sink
10
MSOP8
AFL100-10E
1.8 V 2.5 V
Normally Off,
Current Sink
10
TDFN6
AFL103-01
1.8 V 2.5 V
Normally Off,
Current Sink
40
Die (IC only)
2.7 V 3.6 V
Normally Off,
Current Sink
10
MSOP8
AFL300-00E
4.5 V 5.5 V
Normally Off,
Current Sink
10
MSOP8

 AFL‑Series data sheet (.pdf)

AHL-Series sensors aredesigned to run at low voltages and extremely low currents. Internally duty cycled versions (the AHL0xx Series) provide remarkably low power consumption. Continuously-operating versions (the AHL9xx Series) are also available for maximum frequency response. AHL-Series sensors are ideal for battery-powered devices such as gas and water meters, portable instruments, or any place where extremely low is required. Key specifications are:

  • 1.1 mm x 1.1 mm x 0.45 mm ULLGA package
  • 0.9 - 2.4 V supply voltage
  • Power consumption <1 W (duty-cycled vesrions)
  • 28, 20, or 10 Oe operate points
  • Current-sinking output up to 100 A
  • -40C to +85C temperature range
Standard part types are listed below (bare die and custom parts are also available):

AHL-Series 1.1 x 1.1 mm Low-Voltage Digital Sensors
Part
Number
Typ. Magnetic 
Operate Point (Oe)
Typ. Quiescent
 Current at 1.4 V (A)
Max. Quiescent
 Current at 2.4 V (A)
Operating Mode
Package
AHL021-14E
20
0.095
0.65
Duty Cycled
1.1 mm x 1.1 mm ULLGA

AHL024-14E

28
0.095
0.65
Duty Cycled
1.1 mm x 1.1 mm ULLGA
AHL025-14E
10
0.095
0.65
Duty Cycled
1.1 mm x 1.1 mm ULLGA
AHL921-14E
20
35
110
Continuous
1.1 mm x 1.1 mm ULLGA

AHL924-14E

28
35
110
Continuous
1.1 mm x 1.1 mm ULLGA
AHL925-14E
10
35
110
Continuous
1.1 mm x 1.1 mm ULLGA

Sensor Reference Designs

 AHL‑Series data sheet (.pdf)


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