ADS950

® ® ADS-950 18-Bit, 500kHz, Low-Power Sampling A/D Converters PRELIMINARY PRODUCT DATA FEATURES · · · · · · · · · 18-bit resolution 500kHz minimum sampling rate No missing codes over full military temperature range Very low power, 1.45 Watts Small, 32-pin, side-brazed, ceramic TDIP Edge-triggered Excellent performance Ideal for both time and frequency-domain applications Low cost PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 INPUT/OUTPUT CONNECTIONS FUNCTION BIT 2 BIT 1 (MSB) ANALOG GROUND ANALOG INPUT +5V REFERENCE OUT GAIN ADJUST COMPENSATION –15V SUPPLY +15V SUPPLY +5V ANALOG SUPPLY –5V ANALOG SUPPLY ANALOG GROUND DIGITAL GROUND +5V DIGITAL SUPPLY EOC START CONVERT PIN 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 FUNCTION BIT 3 BIT 4 BIT 5 BIT 6 BIT 7 BIT 8 BIT 9 BIT 10 BIT 11 BIT 12 BIT 13 BIT 14 BIT 15 BIT 16 BIT 17 BIT 18 (LSB) GENERAL DESCRIPTION The low-cost ADS-950 is an 18-bit, 500kHz 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-950 the ideal choice for both time-domain (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-950 contains a fastsettling sample-hold amplifier, a subranging (two-pass) A/D ...