【Part No.】 A3240
【Category】 Chopper-Stabilized Precision Hall-Effect Switch
【Packing】 SOT/SIP
【MFQ】 ALLEGRO
【Datasheet】A3240 Datasheet
A3240
Chopper-Stabilized Precision Hall-Effect Switch
Features
- Resistant to Physical Stress
- Superior Temperature Stability
- Output Short-Circuit Protection
- Operation From Unregulated Supply
- Reverse Battery Protection
- Solid-State Reliability
- Small Size
Description
The A3240-- Hall-effect 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 short-circuit protected open-collector output to sink up to 25 mA. A south pole of sufficient strength will turn the output on. An on-board regulator permits operation with supply voltages of 4.2 to 24 volts.
Three package styles provide a magnetically optimized package for most applications. Package type LH is a modified SOT23W surface-mount package, LT is a miniature SOT89/TO-243AA transistor package for surface-mount applications; while UA is a three-lead ultra-mini-SIP for through-hole mounting. The LH and UA packages are also available in a lead (Pb) free version (suffix, –T), with a 100% matte tin plated leadframe.
Functional Block Diagram
| Part Number | Package Type | RoHS | Temperature |
| Compliant | |||
| A3240ELHLT | 3-lead SOT | No | -40 °C to 85 °C |
| A3240ELHLT-T | 3-lead SOT | Yes | -40 °C to 85 °C |
| A3240ELT | 3-lead SOT | No | -40 °C to 85 °C |
| A3240ELT-T | 3-lead SOT | Yes | -40 °C to 85 °C |
| A3240ELTTR | 3-lead SOT | No | -40 °C to 85 °C |
| A3240ELTTR-T | 3-lead SOT | Yes | -40 °C to 85 °C |
| A3240EUA | 3-pin SIP | No | -40 °C to 85 °C |
| A3240EUA-T | 3-pin SIP | Yes | -40 °C to 85 °C |
| A3240LLHLT | 3-lead SOT | No | -40 °C to 150 °C |
| A3240LLHLT-T | 3-lead SOT | Yes | -40 °C to 150 °C |
| A3240LLT | 3-lead SOT | No | -40 °C to 150 °C |
| A3240LLT-T | 3-lead SOT | Yes | -40 °C to 150 °C |
| A3240LLTTR | 3-lead SOT | No | -40 °C to 150 °C |
| A3240LLTTR-T | 3-lead SOT | Yes | -40 °C to 150 °C |
| A3240LUA | 3-pin SIP | No | -40 °C to 150 °C |
| A3240LUA-T | 3-pin SIP | Yes | -40 °C to 150 °C |
Contact person:
Frances New
Phone:+86-755-81832961
Fax:+86-755-83299282
Email:sumzi@sumzi.com
MSN:sumzi_frances@msn.com
http://www.sumzi.com
