GMR Switch Product Selection Guide
NVE Corporation 11409 Valley View Road, Eden Prairie, Minnesota 55344 USA
(800) 467-7141 Web: www.nve.com
Email: info@nve.com 11/15/02
In addition to these options, NVE recently introduced a GMR Switch that has provisions
for shutting down an external power transistor in case a short circuit is detected. This is
useful in applications where the finished sensor assembly must be “bulletproof,” or
immune to improper connection.
The following table defines the first digit in the NVE AD part number:
NVE AD x xx-xx
Number Meaning
0 20mA Current Sink
1 20 mA Current Source
2 Separate 20mA Current Sink and 20mA Current Source
3 Two Separate 20mA Current Sinks
4 20mA Current Sink + Regulated Output Voltage
5 20 mA Current Source + Regulated Output Voltage
6 Separate 20mA Current Sink and 20mA Current Source +
Regulated Output Voltage
7 Two Separate 20mA Current Sinks + Regulated Output
Voltage
8 Two Separate 20mA Current Sinks + Regulated Output
Voltage + Short Circuit Detection and Shut-Off
9 Separate 20mA Current Sink and 20mA Current Source +
Regulated Output Voltage + Short Circuit Detection and
Shut-Off
Trigger Field, Direction of Sensitivity, Low Voltage Operation
The second and third numeric digits of the part number NVE ADxxx-xx specify the
magnetic trigger field and direction of sensitivity of the part. Five different magnetic
trigger fields are available for the GMR Switch:
- 10 Gauss (10 Oe, 1.0 mT, 0.8 kA/m)
- 20 Gauss (20 Oe, 2.0 mT, 1.6 kA/m)
- 28 Gauss (28 Oe, 2.8 mT, 2.23 kA/m)
- 40 Gauss (40 Oe, 4.0 mT, 3.2 kA/m)
- 80 Gauss (80 Oe, 8.0 mT, 6.4 kA/m)
Other magnetic trigger field levels ranging up to 250 Gauss are available on a custom
basis; please contact NVE.
GMR Switch Product Selection Guide
NVE Corporation 11409 Valley View Road, Eden Prairie, Minnesota 55344 USA
(800) 467-7141 Web: www.nve.com
Email: info@nve.com 11/15/02
In addition to defining the magnetic operate point, these two digits are used to define the
direction of sensitivity and optional low voltage operation. The GMR Switch can be
ordered in Standard Axis or Cross Axis directions of sensitivity; for definitions please see
NVE AD Series Sensitivity Direction and Pin Configuration later in this section.
NVE also makes a GMR Switch with the on-chip voltage regulator bypassed. This limits
the voltage range of the part, but allows it to operate at voltages as low as 3.0V.
The following table defines the second and third digits in the NVE AD part number:
NVE AD x xx-xx
Number Meaning
04 20 Gauss OP, Standard Direction of Sensitivity
05 40 Gauss OP, Standard Direction of Sensitivity
06 80 Gauss OP, Standard Direction of Sensitivity
20 28 Gauss OP, Standard Direction of Sensitivity
21 20 Gauss OP, Cross Axis Direction of Sensitivity
22 40 Gauss OP, Cross Axis Direction of Sensitivity
23 80 Gauss OP, Cross Axis Direction of Sensitivity
24 28 Gauss OP, Cross Axis Direction of Sensitivity
25 10 Gauss OP, Cross Axis Direction of Sensitivity
(ADH Series Only; see page 38)
81 20 Gauss OP, Cross Axis Direction of Sensitivity, Low Volt
82 40 Gauss OP, Cross Axis Direction of Sensitivity, Low Volt
83 80 Gauss OP, Cross Axis Direction of Sensitivity, Low Volt
84 28 Gauss OP, Cross Axis Direction of Sensitivity, Low Volt
Note: For parts that operate at 10 Gauss, see the following section describing the NVE
ADH Series sensors.
NVE AD Series Sensitivity Direction and Pin Configuration
Pin configuration is for the NVE AD Series GMR Switches is given in the following
diagrams. In addition, most GMR Switch parts are available with a choice of two
directions of sensitivity. “Standard” direction of sensitivity is defined as the direction
parallel to the edge of the package containing the pins. “Cross-Axis” direction of
GMR Switch Product Selection Guide
sensitivity is defined as the direction perpendicular to the edge of the package containing
the pins. Pin configuration and sensitivity direction for the SOIC8 and MSOP8 packages
are defined in the drawings below:
NVE AD0xx-xx through NVE AD7xx-xx, NVE ADH0xx-xx:
Standard Axis
N/C
Source
Sink(2)
Ground
VCC
N/C*
Vreg
Sink(1)
Cross Axis
VCC
Source
Sink(2)
N/C
Sink(1)
N/C*
Vreg
Ground
Note: In the case of a Standard Axis Part with the Vreg pin option, Sink(1) will appear at the pin labelled N/C*
NVE AD8xx-xx through NVE AD9xx-xx:
AD8xx-xx
Cap2
Cap
Sink(2)
Ground
VCC
ShortH
Sink(1)
Vreg
AD9xx-xx
Cap2
Cap
Source
Ground
VCC
ShortL
Sink
Vreg
Cross Axis Cross Axis
Pin configuration and sensitivity direction for the AD0xx-10 TDFN6 package are defined
in the drawing below:
AD0xx-10
VCC
N/C
N/C
Out
Test
Ground
Cross Axis
AD0xx-10
N/C
N/C
Ground
VCC
N/C
Out
Standard Axis
NVE Corporation 11409 Valley View Road, Eden Prairie, Minnesota 55344 USA
(800) 467-7141 Web: www.nve.com
Email: info@nve.com 11/15/02

AD320-00E

Mfr. #:
Manufacturer:
Description:
MAGNETIC SWITCH OMNIPOLAR 8MSOP
Lifecycle:
New from this manufacturer.
Delivery:
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