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Mazet has announced a four-channel MDDC sensor-signal amplifier for sensors with current input.

The on-chip solution is capable of digitising low levels of current input at high speeds with high bandwidths and dynamics.

The MDDS is suitable for handling rapidly changing process parameters that sensors provide in applications such as inline measurement of colour and pressure for real-time control of automated processes.

Each channel of the transimpedance amplifier is independently digitally programmable at 16 stages via 5 bits of its SPI interface.

Gradation of transimpedance per channel is implemented binarily with additional intermediate levels in the 1.6 to 100Mohm band.

At maximum transimpedance, fast current measurement is possible in the nA range with a dynamic range of 30dB.

The transimpedance amplifier stages are characterised by low noise.

They respond in a highly linear manner with channel synchronism.

External programming of the amplifier stages allows for independent, dynamic inline amplification across all channels in ongoing operations.

The MDDC comprises a 12 bit on-chip A/D converter that works on the ‘successive approximation’ principle.

The effect of temperature fluctuations on signal processing is said to be compensated to a high extent.

All required reference sources are implemented on chip and can be programmed externally via the serial interface.

The S and H function supports parallel sampling with successive conversion of the analogue values from the channels.

Communication between the MDDC and the downstream controller is implemented by means of a 12 bit SPI interface with a clock speed of up to 16MHz.

The SPI clock speed is also used for the A/D converter.

This allows for a conversion time of 1us per channel or a sampling rate of up to 100kS/s for each of the four channels.

The four-channel MDDC sensor signal IC is suited for multiple sensor applications with exacting precision requirements.

Applications include optical sensors (colour sensors and optical arrays), as well as inline detectors for a, B and gamma rays, X-rays and ions.

The sensor signal IC is available in an SMD housing or can be provided as a naked chip for downstream hybrid or MCM processing.

Mazet offers a True Color Sensor IC with digital output whose signal-processing capabilities are based on the MDDC.

Customer satisfaction, the satisfaction of our own workforce and lasting mutual business success is what we strive for.

The development and manufacture of custom- and application-engineered chips, boards and software using advanced technologies, as well as optoelectronics, represent our core operations.

Our target areas are medical engineering, automation engineering, industrial metrology, and optoelectronic applications.

High quality and delivery reliability are the driving forces of Mazet employees. Certified procedures are in place to guarantee the customer gapless traceability of processes from development through to the manufacture of electronic modules, creation of software or integrated circuits. An established document and data management system ensures that engineering design and manufacturing data is readily available for as long as the customer requires. 

Quality conformity at all phases guarantees the delivery of quality assured services. Mazet uses a quality management system under DIN EN ISO 9001 : 2000 for all of its operational procedures, thus ensuring the highest quality at any given process step.

'Our goal is success through your satisfaction': this is the quality philosophy of any Mazet employee. Consistently ongoing improvement of the quality of products and processes is part of the company's strategy. It relies on a permanent qualification program for employees at all levels, a process management system to optimise work procedures and on investments in all necessary equipment.

Mazet takes on the challenge of defining quality targets, including for new developments, and continuously monitoring fulfillment. The efforts for improvement in quality and output are supported by the social commitment of the senior management.

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