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Avnet Memec has introduced the Max11043 quad, 16-bit, simultaneous-sampling ADC for sensor applications from Maxim Integrated Products.

Designed for continuous-wave (CW) chirp radar systems, this device is for conditioning and digitising the IF signals from a 24GHz or 77GHz radar front-end for a DSP or microprocessor.

The device integrates four discrete analogue filters, four high-precision, simultaneous-sampling ADCs, and a 12-bit control DAC into a 6mm x 6mm package.

The Max11043’s integration makes it suitable for automotive radar applications, industrial control applications that use radar signals, power-grid monitoring, and other applications that require simultaneous sampling.

The Max11043 contains a versatile filter block and PGA on each of its four channels.

The filter consists of seven cascaded second-order programmable filter sections, allowing the construction of a 14th-order filter.

Each second-order filter is configurable as lowpass, highpass, or bandpass with optional rectification.

Each PGA is programmable for a gain of 1 to 64 and includes an equaliser function to provide gain-versus-frequency characteristics for CW chirp radar.

The signal path of each ADC can be customised and configured individually.

Other features include an internal or external reference, power-saving modes, and a two-stage, 12-bit DAC.

The integrated DAC provides the VCO control voltage to the RF mixer in the radar front-end.

With its adjustable DAC output range, this control voltage can be matched to the VCO’s input-voltage range.

Additionally, scan mode allows the ADC’s results to be read while simultaneously updating the DAC to increase communications efficiency.

The Max11043 operates from a 3V to 3.6V supply.

It is available in a 40-pin TQFN package and is fully specified over the -40C to +125C automotive temperature range.

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