| In This Issue | October 22, 2026 |
• Ultraminiature ALT-Series Magnetometers
• NEW: Ultralow-Noise BLT022 Magnetometer
• Evaluation Boards and BLT022 Connection Boards
• Meet NVE at MD&M Midwest, October 28–29
• ABT-Series TMR Gear Sensor Demonstration
Before we forget: we are exhibiting at MD&M Midwest in Minneapolis next week! Keep reading to find your free entry pass!
Smaller Sensors. Smaller Signals.
How small can a magnetometer get? How faint a field can it detect? NVE is pushing both frontiers with Tunneling Magnetoresistance (TMR) sensors. Our ALT-Series brings high sensitivity to ultraminiature packages, while the BLT022 takes magnetic field detection into the picotesla range.
ALT022-20E: Big Capability in a Tiny Footprint
At just 0.55 × 0.55 mm, the ALT022-20E packs a sensitive analog TMR bridge into a wafer-level chip-scale package. Its package footprint is approximately 95% smaller than a 2.5 × 2.5 mm DFN6, opening new possibilities for wearables, compact robotics, and space-constrained sensing.
| 2.5 × 2.5 mm DFN6 | 1.1 × 1.1 mm DFN4 | 0.55 × 0.55 mm WLCSP |
Small Size. Strong Signals.
The ALT022-20E delivers 300 mV/V/mT typical sensitivity over a ±0.25 mT linear range. Its bipolar differential output detects field strength and polarity. The ALT family offers linear ranges from ±0.25 mT to ±20 mT, with package choices for a wide range of designs.
 Representative ALT-Series response over temperature.
Field ranges vary by model. | |  Differential TMR bridge.
Output scales with supply voltage. |
Download the ALT-Series Datasheet »
NEW: BLT022: A New Frontier in Low Noise
We are offering a new sensor with a noise floor ten-times lower than our previous best. The BLT022 sets a new standard for ridiculous sensitivity and enables the applications where it is necessary. Typical field detectivity is 30 pT/√Hz at 100 Hz and 350 pT/√Hz at 1 Hz, paired with an extraordinary 1000 mV/V/mT typical sensitivity. That combination helps bring faint magnetic signals within reach for navigation, metal detection, and nondestructive analysis.
Lower Noise. Fainter Fields.
The comparison below shows field detectivity across the ALT-Series and BLT022. Lower curves mean lower magnetic field noise at a given frequency. From the tiny ALT022-20E to the ultrasensitive BLT022, choose the balance of size, field range, and noise performance your application needs.
 ALT-Series and BLT022 field detectivity versus frequency.
Lower curves indicate lower field noise; detectivity depends on frequency. BLT022 Highlights
• ±0.1 mT linear range
• Up to 350 kHz bandwidth
• 15 kΩ typical resistance
• 0 to 10 V supply range
• −40 to 125°C operation
• ±0.1%/°C output sensitivity temperature coefficient
Low Power, Too
A ratiometric bridge supports operation at very low supply voltages and produces an output proportional to its supply.
Download the BLT022 Datasheet »
Choose Your Next Design AdvantageClick a part number for product information and ordering.
*BLT022 specifications are preliminary. BLT022 is offered in a chip-on-board assembly compatible with the SOIC8 footprint. The molded SOIC8 version is coming soon.
New Video: Low-Noise TMR Sensors
Explore the move toward smaller, more sensitive magnetometers and compare ALT-Series and BLT022 noise performance.
Ready to make room for more sensitivity?
Explore the ALT-Series for smaller designs, or ask about BLT022 sampling for your next weak-field sensing project.
Contact NVE Applications Engineering »
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