GENERAL DESCRIPTION

The ADSD-1420S is a functionally complete, dual 14-bit, 20MSPS, sampling A/D converter. Its standard, 40-pin, triple-wide SMT DIP contains two fast-settling sample/hold amplifiers, two 14-bit A/D converters, multiplexed output buffers, a precision reference, and all the timing and control logic necessary to operate from either two or a single start convert pulse.

The ADSD-1420S is optimized for wideband frequency-domain applications and is fully FFT tested. The ADSD-1420S requires only ±5V supplies and typically consumes 1.6 Watts. The digital output power supply is capable of directly driving 5V or 3V logic systems. Models are available in either commercial 0 to +70°C or military -55 to +125°C operating temperature ranges.

FEATURES

■ 14-bit resolution; 20MSPS sampling rate

■ Functionally complete; ±2.5V input range

■ No missing codes over full temperature range

■ Edge-triggered

■ ±5V supplies, 1.6 Watts

■ 75dB SNR, -80dB THD

■ Ideal for both time and frequency-domain applications