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Mazet will introduce the MTI04E and the MTI08 multi-channel programmable gain transimpedance amplifiers at this year’s Electronica.

The Jencolor signal amplifiers complement the existing MTI ICs to address a number of additional applications.

The circuits are designed for processing signals from sensors with multiple current outputs.

The increased sensitivity and wider dynamic range of the amplifiers means they can be used with photodiodes in array or row sensors – such as the Jencolor colour sensors – that operate in low-light environments or environments with extreme intensity/colour changes.

The MTI circuits are ROHS-compliant and are supplied in SMD housings optimised for COB assembly.

The MTI04E’s functions and pin assignments are fully compatible with the existing MTI04CS/CQ signal amplifier.

The main difference is that only three functional channels are integrated on the chip; this permits signal processing for tri-colour sensors (including reference diode) within a single module.

The fourth channel is reserved as a reference channel for the sensor system’s temperature compensation.

It is separated internally from the programmable amplifiers.

All the other functions correspond to those of the MTI04C.

The ability to set the transimpedance to eight different levels offers the customer added scope to make adjustments in accordance with the application requirements.

The amplifier is programmed via three inputs, with the programming effective for all channels at the same time.

The lowest current range is 25nA.

The ability to convert photo currents up to the single-digit nA range makes this transimpedance amplifier ideal for even the smallest sensor signals.

When several photodiodes are to be switched on, the compensation of the transimpedance amplifiers can be adjusted digitally in two stages (5pF and 80 pF) to the input capacitance of the photodiodes.

The integrated power-down mode allows the amplifier to switch to a power-saving operating mode.

When the IC is not required, the zero-signal current consumption can be temporarily reduced to 8uA.

The operating temperature range is -40C to +125C.

These characteristics allow the signal amplifier to be used for new applications such as in battery-powered measuring and checking devices.

The second amplifier, the MTI08, provides eight programmable channels.

In contrast to the existing MTI ICs, each channel can be configured individually with eight amplification levels ranging from 200 kOhm to 25.6 MOhm.

The lowest photo current is 20nA at a signal frequency of 19 kHz.

The MTI08 provides an MUX on the output and operates at a voltage of 3 – 5 V with power-down mode.

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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