Signal ASICs for inline processes

The signal ASICs feature four or eight signal channels and can be dynamically programmed in the process by means of multiple amplification levels. This makes the devices suitable for multi-channel sensor systems in applications with dynamic amplification and a high sensor bandwidth. The signal ASICs are available in SOP and COB packages.

TIAs used as current-voltage converters ensure continuous signal processing at high signal frequencies, thus meeting the demands of automated processes. They are best suited to synchronous measuring procedures in the kilohertz range, where fast converters are required to scan optical signals. Examples include sensors for quality testing in inline manufacturing processes or those in touchless handheld devices.

The MTI04 can convert up to four photo currents per chip within an eight-pin programmable amplification level featuring parallel signal output. Alongside a sample and hold circuit, the MTI08 eight-channel converter features a multiplexer at the voltage output, enhancing the functions of the MTI04. This design enables reduced space requirements, lower amplification and outstanding synchronisation properties across the gain stages.

The MDDC04 and MCDC04AQ current-to-digital converters, which can be programmed using a digital interface, feature high-resolution on-chip AD conversion, signal amplification and temperature compensation. The MDDC04 contains four current-voltage converters that work in cycles. For each channel, 16 transimpedances can be separately adjusted in binary increments. Covering a dynamic range of 30dB, the device can even measure currents in the nano-ampere range. However, the current-to-digital converter is particularly suitable for higher signal frequencies in the kilohertz range, making it useful for fast synchronous measuring processes.

The MCDC04AQ converts photo currents from detectors via a continually integrating load balance procedure. Via an I²C interface, the device makes these currents available as digital data in a 16-bit format on the output side. Due to the internal current load conversion in the corresponding parameters, the current-to-digital converter is suitable for use in connection with optical sensors for applications that require the measurement of light in a broad range.