ADS-937

The low-cost ADS-937 is a 16-bit, 1MHz sampling A/D converter. This device accurately samples full-scale input signals up to Nyquist frequencies with no missing codes. This feature, combined with excellent signal-to-noise ratio (SNR) and total harmonic distortion (THD), makes the ADS-937 the ideal choice for both time-domain (CCD/medical imaging, scanners, process control) and frequency-domain (radar, telecommunications, spectrum analysis) applications. Packaged in a 32-pin, side-brazed, metal-sealed, ceramic

TDIP, the functionally complete ADS-937 contains a fastsettling sample-hold amplifier, a subranging (two-pass) A/D converter, an internal reference, timing/control logic, and errorcorrection circuitry. Digital input and output levels are TTL. ADS-937 only requires the rising edge of the start convert pulse to operate.

Requiring ±15V and ±5V supplies, the ADS-937 typicallydissipates 1.25 Watts. The device is offered with both bipolar (±5V) and unipolar (0 to 10V) analog input ranges. Models are available for use in either commercial (0 to +70°C) or military (55 to +125°C) operating temperature ranges. A proprietary, auto-calibrating, error-correcting circuit enables
the device to achieve specified performance over the full military temperature range.