GENERAL DESCRIPTION

The ADS-939 is a 16-bit, 10MHz sampling A/D converter. This device accurately samples full-scale input signals up to Nyquist frequencies with no missing codes. The dynamic performance of the ADS-939 has been optimized to achieve a signal-to-noise ratio (SNR) of 82dB and a total harmonic distortion (THD) of –86dB.

Packaged in a 40-pin TDIP, the functionally complete ADS-939 contains a fast-settling sample-hold amplifier, a subranging (two-pass) A/D converter, an internal reference, timing/control logic, and error-correction circuitry. Digital input and output levels are TTL. The ADS-939 only requires the rising edge of the start convert pulse to operate.

FEATURES

■ 16-bit resolution

■ 10MHz sampling rate

■ Functionally complete

■ No missing codes over full military temperature range

■ Edge-triggered

■ ±5V, ±12V or ±15V supplies, 1.5 Watts

■ Small, 40-pin, ceramic TDIP

■ 82dB SNR, –86dB THD

■ Ideal for both time and frequency-domain applications