New COTS-grade 12-bit / 8-channel low-power ADCs

Datel has introduced the ADS-429 Series of multi-channel analog-to-digital converters (ADCs) that offer 12-bit resolution and are housed in 16-pin plastic TSSOP packages. Available in two low-cost, enhanced commercial of the shelf (COTS) grades, the devices target defence and aerospace applications. 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: –40C to +105C (ADS-429SE); –55C to +125C (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 the ideal selection for low power and battery operated multi-channel Data Acquisition Systems. The ADS-429 offers a novel architecture that includes a sample-hold, a successive approximation A/D, and an SPI compatible serial interface. It features an excellent signal-to noise ratio (SNR) of 73dB and a total harmonic distortion (THD) of -85dB, which makes the ADS-429 the ideal choice for both time domain (imaging, telemetry, process control) and frequency-domain (radar, telecommunications, spectrum analysis) applications. For the more demanding and ruggedized application, Datel also offers the products as fully-screened high-reliability ADS-429–QL and ADS-429/883 models. They 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, says the company.