Data Sheet
VE Corporation " 11409 Valley View Road, Eden Prairie, MN 55344-3617 " (952) 829-9217 " www.nve.com
ADL-Series
Nanopower Digital Switches
Key Features
" Ultraminiature 1.1 mm x 1.1 mm x 0.45 mm ULLGA package
" Precise Detection of Low Magnetic Fields
" Low Voltage Operation to 2.4 V
" Typical Power Consumption As Low As 72 nW at 2.4 V
" Digital Switch Output
" Continuously Operating or Duty-Cycled Versions
Description
ADL-Series sensors are Giant Magnetoresistive (GMR) Digital Switches designed to run at low voltages and
extremely low currents. The devices are manufactured with NVEs patented spintronic GMR technology for
unmatched miniaturization, sensitivity, precision, and low power.
NVEs new ULLGA leadless package measures just 1.1 mm x 1.1 mm x 0.45 mm. Bare die
(0.625 mm x 0.625 mm) are also available for extremely space-critical applications.
Configured as a magnetic switch, the output turns on when the magnetic field is applied, and turns off
when the field is removed. The applied magnetic field can be of either polarity, and the magnetic operate
point is extremely stable over supply voltage and temperature.
The ICs consist of a GMR sensor element, CMOS signal processing circuitry to convert the analog sensor
element output to a digital output, and optional oscillator and timing circuitry for power management duty
cycling.
Internally duty cycled versions conserve power. Two different duty-cycle frequencies are available, offering
a trade-off between update frequency and power consumption. An integrated latch ensures the output is
available continuously. The continuously operating versions have a frequency response of 250 kHz.
ADL-Series Digital Switches are ideal for battery-powered devices such as gas and water meters, portable
instruments, or anyplace where an extremely low power device is required. The continuously operating
versions consume less than a milliwatt, and the duty-cycled versions consume less than a microwatt. The
output is current-sinking and can sink up to 100 microamps.
Versions of this part with different magnetic characteristics and duty-cycle update frequencies are available.
Please contact NVE for details.
SB-00-017
February 2012
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