SS460S

Honeywell’s Nanopower Series Magnetoresistive (MR) Sensor ICs are ultra-sensitive devices designed to accommodate a wide range of applications with large air gaps, small magnetic fields and low power requirements. The sensor ICs respond to either a North or South pole applied in a direction parallel to the sensor. They do not require the magnet polarity to be identified, simplifying installation and potentially reducing system cost. These sensor ICs use a very low average current consumption and a push-pull output which does not require a pull-up resistor. The sensor ICs can operate from a supply voltage as low as 1.65 V, promoting energy efficiency.

The Nanopower Series is available in two magnetic sensitivities to accommodate a variety of application needs:

• •  SM351LT: For applications requiring ultra high magnetic sensitivity (7 G typical operate, 11 G maximum operate) and a very low current draw (360 nA typical).
• •  SM353LT: For applications requiring very high magnetic sensitivity (14 G typical operate, 20 G maximum operate) and a very low current draw (310 nA typical).

Applications

•  Industrial
• •  Mobile equipment (i.e., handheld computing equipment, scanners)
• •  Water, electric and gas utility meters
• •  Building access control; reed switch replacement for battery operated security systems
• •  Industrial smoke detectors
•  Medical
• •  Exercise equipment
• •  Infusion pumps
• •  Drawer position sensing (e.g., medical cabinets)
• •  Hospital beds
•  White Goods
• •  Lid, door and drawer position detection
• •  Fluid flow
•  Medium-Sized Consumer Electronics
• •  Battery-optimization position sensor

Features & Benefits

• •  High sensitivity: 7 Gauss typ., 11 Gauss max. (SM351LT); 14 G typ., 20 Gauss max. (SM353LT)
• •  Nanopower: Average current of 360 nA typ. (SM351LT) and 310 nA typ. (SM353LT)
• •  Supply voltage range: 1.65 Vdc to 5.5 Vdc; simplifies design-in
• •  Omnipolar sensing: Activates with either pole from a magnet
• •  Temperature range: -40 °C to 85 °C (-40 °F to 185 °F)
• •  Push-pull output: Does not require external pull-up resistor
• •  Non-chopper stabilized design
• •  RoHS-compliant materials: Meets Directive 2002/95/EC
• •  Package: SOT-23

Honeywell Nanopower Series Video

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Datasheet
Magnetic Sensor IC Product Line Card

Application Notes

Magnetic Position Sensing in Brushless DC Electric Motors
Magnetoresistive Sensor ICs Nanopower Series

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