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Hall Effect Sensors

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Integrated Hall Transducers

Hall Effect sensor, or transducer, designers really do have their work cut out. In order to build one of the best sensors out there, there are a variety of different elements to take into account. One of the most popular types of transducers is something called an Integrated Hall Transducer.

As with all types of transducer, or sensor, out there, these are designed to help measure an object’s magnetic field. In order to make use and measure the Hall Effect, a sensor (transducer) needs to be high quality, to give the best readings. Whilst Integrated Hall Transducers are very popular, they aren’t the highest quality out there. For regular work however, these are more than adequate, and for that reason they are regularly produced for a lower cost.

Manufacturing costs need to be as low as possible, without compromising quality, in order to take quality measurements of magnetic fields. We know that the Hall Effect is used in a large number of equipment pieces these days, including compasses and cars. For these pieces of equipment to run correctly, they need to be of the right quality.

Sensor Structure Materials

An Integrated Hall Transducer is made out of silicon, and the sensor is built upon a chip. This means it can all be done very cheaply, therefore making it ideal for mass production. Because manufacturers are making use of a transducer which is low cost, this means good quality results can be obtained without breaking the bank in production. As we just mentioned, low cost and high quality is always a winner.

How is an Integrated Hall Transducer different to other different types out there? It’s all about how it is made, in order to keep costs down and to allow correct usage.

Different Builds

There are countless different ways to build and add structure to an integrated circuit of this type, and many of these are extremely difficult to totally describe in a way that people understand. One of the easiest however is called an epitaxial Hall Effect transducer, and this is a little more simple on the structure side of things, whilst still maintaining a high quality performance, for a lower cost compared to other types.

An epitaxial Hall Effect transducer is called this because of the way it is built, i.e. it is built within something called the epitaxial N-type layer of silicon. The whole construction is arranged in such a way to create a positive voltage. There are wells which are created inside the transducer layer and these work isolated from one another. This means that you can create independent components of the circuit, e.g. transistors, and Hall Effect transducers, with the wells as a point to start at. This is a basic build, which although sounds complicated, is one of the easiest to produce for manufacturing requirements.

An epitaxial type of transducer creates good results, over larger values, making them ideal for industry. The silicon glass covers over the transducer and then an aluminium layer is used for the outer, with connectors emerging from the aluminium, to connect to the object.

Price Driven Sensors

This may all sound confusing, but the bottom line is that an Integrated Hall Transducer is a cheap and good quality way to take measurements of magnetic fields. Designers of Hall Effect transducers need to decide the best way to create high quality sensors, which can be manufactured in larger amounts, for a lower price tag. Mass production is no good if the cost is too extreme, and for that reason, the way the transducer is built is something to take great interest in.