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High-Performance Power ICs and Hall-Effect Sensors
Related Links:
Datasheets:
A3260: Two-Wire, Chopper-Stabilized, Precision Hall-Effect Bipolar Switch (PDF)
Selection Guides:
Hall-Effect Sensors,
Bipolar Hall-Effect Digital Switches
Technical Publications:
Chopper-Stabilized Amplifiers With A Track-And-Hold Demodulator (PDF),
Two-Wire Hall-Effect Switches (PDF),
Understanding Bipolar Hall-Effect Sensors (PDF),
Monolithic Magnetic Hall Sensors using Dynamic Quadrature Offset Cancellation (PDF)
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A3260
Two-Wire, Chopper-Stabilized, Precision Hall-Effect Bipolar Switch
These parts have been phased out of production as of April 28, 2007.
Features
- Internal Current Regulator for 2-Wire Operation
- Output Slew Rate Controlled
- Resistant to Physical Stress
- Superior Temperature Stability
- Operation From Unregulated Supply
- Reverse Battery Protection
- Solid-State Reliability
- Small Size
Description
The A3260-- Hall-effect bipolar switch is an extremely temperature-stable and stress-resistant sensor especially suited for operation over extended temperature ranges to +150°C. Superior high-temperature performance is made possible through dynamic offset cancellation, which reduces the residual offset voltage normally caused by device overmolding, temperature dependencies, and thermal stress.
The device includes on a single silicon chip a voltage regulator, Hall-voltage generator, small-signal amplifier, chopper stabilization, Schmitt trigger, and a constant-current open-collector output. A south pole of sufficient strength will turn the output OFF. An on-board regulator permits operation with supply voltages of 3.5 to 24 volts. Noise radiation is limited by control of the output current slew rate.
The first character of the part number suffix determines the device operating temperature range; suffix ‘E–’ is -40°C to +85°C and ‘L–’ is -40°C to +150°C. Two package styles provide a magnetically optimized package for most applications. Suffix ‘–LH’ is a miniature SOT23W low-profile surface-mount package, while suffix ‘–UA’ is a three-lead ultra-mini-SIP for through-hole mounting.
Functional Block Diagram
| Part Number | Package Type | RoHS Compliant |
Part Composition/ RoHS Data |
Temperature | Comments | Samples | Distributor Stock |
|---|---|---|---|---|---|---|---|
| A3260ELHLT | 3-lead SOT | No | view data | -40 °C to 85 °C | discontinued | samples not available | |
| A3260EUA | 3-pin SIP | No | view data | -40 °C to 85 °C | discontinued | samples not available | |
| A3260LLHLT | 3-lead SOT | No | view data | -40 °C to 150 °C | discontinued | samples not available | |
| A3260LUA | 3-pin SIP | No | view data | -40 °C to 150 °C | discontinued | samples not available |
Allegro's products are not to be used in life support devices or systems, if a failure of an Allegro product can reasonably be expected to cause the failure of that life support device or system, or to affect the safety or effectiveness of that device or system.