NVE Sensor and Isolator News
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    May 2017 Electrifying  News  From  NVE
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In This Issue
TDFN Analog Sensor

Recent Conferences and Exhibitions

Upcoming Conferences and Exhibitions

Analog Sensor Amplifier
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Quick Links
Sensor Selector Guide

Isolator Selector Guide

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Document Updates
Sensor Catalog
Updates; added new AAL004
 
Analog sensor datasheet
Added AAL004
(see story at right)
 
AAT00x angle sensor datasheet
More detailed accuracy specifications
 
ADL-Series Nanopower digital sensor datasheet
Updates; new reference circuits
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New YouTube Videos
Magnet distance Web application
Current sensing Web application
ADT-Series TMR Rotation Sensors
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Memorial Day
 
  NVE will be closed
  May 29
  for Memorial Day.
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NEW! World’s Smallest Analog Sensor
 
NVE’s industry-standard analog magnetometer sensors just got smaller with a new TDFN6 version, the AAL004-10E. The new part is the world’s smallest high-performance analog sensor IC.

TDFN Package 
 
The new AAL004-10E is
our smallest analog sensor
.
 
The magnetometers provide a precise output proportional to the applied magnetic field. Second-generation GMR materials provide extremely low hysteresis and excellent temperature stability.

The sensors are configured as inherently temperature-compensating Wheatstone bridges:

AA-Series sensor schematic
 
A Wheatstone bridge configuration
for inherent temperature compensation.
 
The AAL-subtype uses second-generation GMR technology for exceptional temperature stability and low hysteresis, making it ideal for low-field sensing.

Key AAL004-10 features include:
  • Low fields: linear down to 1.5 Oe
  • High sensitivity: 3.5 mV/V/Oe typical
  • Low hysteresis: <2%
  • Omnipolar output
  • –40 to 125°C operating temperature
  • Ultraminiature: 2.5 x 2.5 x 0.8 mm TDFN6 package

NVE’s low-field analog sensors are summarized in the following table:
 
Low-Field Magnetometer Sensors
Part 
Number
 (click for detais)  
 Linear 
Range
(Oe)
Typ.
Sens-
itivity
 (mV/V/Oe) 
Max.
 Hyster- 
esis
Typ.
 Resist- 
ance
 Package 
0.6–3.0
15
15%
2 kΩ
SOIC8
1.5–7.5
4
15%
2 kΩ
MSOP8
1.5–10.5
3.5
2%
5.5 kΩ
SOIC8
 ***NEW***
1.5–10.5
3.5
2%
2.2 kΩ
TDFN6
 
Download datasheet > 
 
All four low-field part types are in stock and available for immediate delivery.
 
 Buy low-field sensors
 
Recent Conferences
 
Intermag
NVE researchers presented two invited papers at the prestigious Intermag Conference in Ireland:
 
Bio-Applications of Giant Magnetoresistance and Tunneling Magnetoresistance Phenomena: In-Flow Magnetic Biomarker Detection
 
AND:
 
Spintronic Sensors in Transportation
 
Upcoming Conferences
 
PCIM EuropePower Conversion and Intelligent Motion (PCIM),
May 16 to 18, Nürnberg, Germany
 
NVE distributors Hy-Line (stand 9-525) and IS-Power (stand 7-601) will display our products. Unique featured products will include six-kilovolt isolators.
Download Free Registration Coupon Courtesy HY-LINE Power > 
 
 
Sensor+Test
Sensor+Test 2017,
May 30 to June 1, Nürnberg, Germany
 
NVE sensors will be on display in cooperation with distributor IS-LINE (stand 5-146).
 
Application Corner
 
Analog Sensor Amplifier 
 
Although NVE analog sensors such as the new AAL004-10E have large output signals, preamplifiers are used in some applications. Instrumentation amplifiers such as the INA826 are popular because they have a low component count and excellent common-mode rejection ratios without needing to match resistors.
 
The reference circuit below has a gain of 20 to provide a full-scale output over the sensor’s linear range:

Instrumentation amplifier reference circuit 
A single-ended analog sensor
instrumentation amplifier circuit.

 
Note that the instrumentation amplifier has a minimum output of 0.1 volt, so to detect very low fields on a single supply, an offset can
be provided by using a non-zero amplifier VREF.
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