ADS-930

® ® ADS-930 16-Bit, 500kHz Sampling A/D Converters INNOVATION and EXCELLENCE FEATURES 16-bit resolution 500kHz sampling rate Functionally complete Excellent dynamic performance 83dB SNR, –89dB THD No missing codes Small, 40-pin, TDIP package 3.5 Watts power dissipation On-board FIFO PIN INPUT/OUTPUT CONNECTIONS FUNCTION +10V REF. OUT BIPOLAR ANALOG INPUT ANALOG GROUND OFFSET ADJUST GAIN ADJUST +15V SUPPLY COMP. BITS ENABLE FIFO READ ANALOG GROUND –15V SUPPLY ANALOG GROUND OVERFLOW EOC +5V SUPPLY START CONVERT DIGITAL GROUND FSTAT1 FSTAT2 PIN 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 FUNCTION BIT 1 (MSB) BIT 1 (MSB) BIT 2 BIT 3 BIT 4 BIT 5 BIT 6 BIT 7 BIT 8 BIT 9 ANALOG GROUND BIT 10 BIT 11 BIT 12 BIT 13 BIT 14 DIGITAL GROUND FIFO/DIR BIT 15 BIT 16 (LSB) GENERAL DESCRIPTION The low-cost ADS-930 is a high-performance, 16-bit, 500kHz sampling A/D converter. This device accurately samples fullscale input signals up to Nyquist frequencies with no missing codes. The dynamic performance of the ADS-930 is optimized to achieve a THD of –89dB and an SNR of 83dB. Packaged in a small, 40-pin, ceramic TDIP, the functionally complete ADS-930 contains a fast-settling sample-hold amplifier, a subranging (three-pass) A/D converter, an internal reference, an on-board FIFO, timing and control logic, threestate outputs and error-correction circuitry. Digital inputs/ outputs are TTL. Requiring ±15V and +5V supplies, the ADS-930 typically dissipates 3.5 Wa...