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The ADS7831 is a complete 12-bit sampling A/D using state-of-the-art CMOS structures. It contains a complete 12-bit capacitor-based SAR A/D with inherent S/H, reference, clock, interface for microprocessor use, and three-state output drivers.
The ADS7831 is specified at a 600kHz sampling rate, and guaranteed over the full temperature range. A ±2.5V input range and excellent Nyquist performance provide an optimum solution in ±5V supply systems.
The 28-pin ADS7831 is available in a plastic 0.3" DIP and in an SOIC, both fully specified for operation over the industrial 40°C to +85°C range.
ADS7831 Maximum Ratings
Analog Inputs: VIN ...................................................................... ±25V REF ............................... +VANA +0.3V to AGND2 0.3V CAP ..................................... Indefinite Short to AGND2 Momentary Short to +VANA Ground Voltage Differences: DGND, AGND1, AGND2 ................. ±0.3V +VANA .......................................................................................... +7V +VDIG to +VANA ....................................................................... +0.3V +VDIG ............................................................................................. 7V VANA ........................................................................................ 7V Digital Inputs ................................................... 0.3V to +VDIG +0.3V Maximum Junction Temperature ............................................ +165°C Internal Power Dissipation ...................................................... 825mW Lead Temperature (soldering, 10s) ........................................ +300°C
ADS7831 Features
`600kHz THROUGHPUT RATE `STANDARD ±2.5V INPUT RANGE `69dB min SINAD WITH 250kHz INPUT `COMPLETE WITH S/H, REF, CLOCK, ETC. `PARALLEL DATA w/LATCHES `FULLY SPECIFIED 40°C TO +85°C `15MHz 3dB BANDWIDTH `28-PIN 0.3" PDIP AND SOIC