Aerospace & Defence

COTS ADCs for defence applications

24th May 2016
Joe Bush

Aimed at military, airborne and aerospace applications, DATEL has announced the introduction of its ADS-429 Series - a new line of multi-channel analogue-to-digital converters that offer 12-bit resolution and are housed in a 16-pin plastic TSSOP package.

The series is available in two low cost, enhanced commercial-off-the-shelf (COTS) grades and each unit features no missing codes, ±0.5 LSB of Differential Non-Linearity, ±0.5 of Integral Non-Linearity and is 100% tested for performance across one of the two temperature ranges - -40 to 105ºC (ADS-429SE) and -55 to 125ºC (ADS-429SM). The ADS-429 requires only one supply voltage for operation ranging from 2.7 to 5.25V and consumes only 3mA of supply current. It has a sleep mode feature that consumes only 8uA of current. It is well suited for low power and battery operated multi-channel data acquisition systems.

The ADS-429 offers an architecture that includes a sample hold, a successive approximation A/D, and an SPI compatible serial interface. It features a signal to noise ratio (SNR) of 73dB and a total harmonic distortion (THD) of -85dB, which makes the ADS-429 suitable for both time domain (imaging, telemetry, process control) and frequency domain (radar, telecommunications, spectrum analysis) applications.

For more demanding and ruggedised applications, DATEL also offers this family of products as fully screened high reliability ADS-429–QL and ADS-429/883 models. These two MIL-STD models are offered in a hermetically sealed ceramic package to protect the IC from the effects of moisture/outgassing and to isolate the IC from the stresses that may occur on the printed circuit.

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