NVE Sensor and Isolator News
May 2009
In This Issue

Nanopower Sensors

The Right Isolator

IC Isolation

Quick Links
Sensor Selector Guide

Isolator Selector Guide

Online Store

Contact Us

Upcoming Shows
Sensor/Test Logo
NVE sensors will be on display at Sensor+Test 2009 in cooperation with NVE distributor HY-LINE Sensor-Tech. The show runs May 26 to 28 in Nüremberg, Germany, and is one of the largest sensor shows in the world.
<Free Registration
Courtesy HY-LINE>

Fun Formulas
    Ferrous Wheel
Ferrous Wheel

Fun Fact
Coffee CupA coffee cup could hold about 700,000 of NVE’s smallest packaged parts, the new 1.1 millimeter square ULLGA Nanopower Sensors (we don’t recommend storing them in a coffee cup, though).
<More Fun Facts>
Product News
Nanopower Magnetic Sensors NEW!

Samples are now available for a number of models of the new ADL-Series Giant Magnetoresistive (GMR) Digital Switches. The new devices are NVE’s smallest packaged parts at just 1.1 mm x 1.1 mm x 0.45 mm, and are ideal for ultraminiature industrial controls.
ADL-Series Sensors fit on the head of a pin
ADL-Series Sensors fit
on the head of a pin.

The output is configured as a magnetic “switch,” where the output turns on when a magnetic field is applied and off when the field is removed. The field can be either polarity, and the magnetic operate point is extremely stable over supply voltage and temperature.

Internally duty cycled versions (the ADL0xx and ADL1xx Series) reduce power consumption. An integrated latch ensures the output is available continuously. Two duty-cycle frequencies are available, offering a tradeoff between update frequency and power consumption. A continuously-operating version (the ADL9xx Series) is also available.

ADL0xx-14 Functional Block Diagram
ADLxxx-14 Functional Block Diagram

Continuously-operating versions consume less than a milliwatt, while duty-cycled versions consume less than a microwatt.

ADL-Series parts are ideal for battery-powered devices such as gas and water meters, portable instruments, or anyplace where extremely low power is required.

Key specifications are:
  •  1.1 mm x 1.1 mm x 0.45 mm ULLGA package
  •  2.4 - 3.6 V supply voltage
  •  As low as 72 nW typ. power consumption at 2.4 V
  •  20, 28, or 40 Oersted operate points
  •  Current-sinking output up to 100 µA
  •  -40°C to +125°C temperature range

Samples are available to qualified customers.

Call our Sensor department at or (800) GMR-7141 or e-mail sensor-info@nve.com.

<Learn More About NVE’s Smallest Packaged Sensors>

Choosing the Right Isolator IsoLoop--The Opto Alternative

With over 100 isolator models, there’s certain to be one ideal for your application. Use the following guide to select the right IsoLoop isolator:

Application Requirement Isolator Design Feature Products
High data rate
High bandwidth GMR IL7xx, IL2xx, IL6xx
Smallest footprint MSOP8 or narrow-body SOIC16 All
Analog or differential inputs Passive (coil) input IL6xx
Low PWD, 50 ps jitter
High slew rate electronics IL7xx, IL2xx, IL6xx
Low EMI signature Data-driven transfer function IL7xx, IL2xx, IL6xx
Low power consumption Edge-sensitive switching IL7xx, IL2xx, IL5xx
Excellent transient immunity Low capacitance
Wheatstone bridge output
Known initial output state Internal refresh or passive input IL5xx (Internal refresh);
IL6xx ( passive input)
Channel-to-channel isolation Integrated, isolated inputs IL611, IL613
Wired-OR outputs Open-drain outputs IL6xxA (“A” types only)
Fail-safe operation Known zero-input state IL6xx
DC stability
Inherent DC stability or refresh IL6xx (Inherent DC stability);
IL5xx (refresh)
True optocoupler emulation
Passive input IL6xx
Cost sensitive Lower-cost electronics IL5xx

<More Info (Application Bulletin No. 16>

<Isolator Selector Guide>

Application Corner
I²C Isolation Using IL612A
By Sandy Templeton
Director, Isolator Product Development and Applications

This circuit provides bidirectional isolation of I²C bus signals with no restrictions on data rate, and none of the I²C bus latch-up problems common with other isolation circuits:

Single-Component RS-485 Receiver Using IL610

The P82B96 buffer prevents loop latch-up in the low state by driving an I²C low voltage of 0.6 V on pin 3, preventing it from holding SDA low when SDA_Iso transitions from low to high.

<Download IL600A Series Datasheet>

<More Isolator Applications>Buy Online