Analog-to-Digital Converter (ADC) Chips from Richardson RFPD

Converter - ADC -- 5962-8876403XX

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Converter - ADC -- 5962-8876403XX-Image

The AD7824 and AD7828 are high-speed, multichannel, 8-bit ADCs with a choice of 4 (AD7824) or 8 (AD7828) multiplexed analog inputs. A half-flash conversion technique gives a fast conversion rate of 2.5 °s per channel and the parts have a built-in track/hold function capable of digitizing full-scale signals of 10 kHz (157 mV/°s slew rate) on all channels. The AD7824 and AD7828 operate from a single +5 V supply and have an analog input range of 0 V to +5 V, using an external +5 V reference.Microprocessor interfacing of the parts is simple, using standard Chip Select (CS) and Read (RD) signals to initiate the conversion and read the data from the three-state data outputs. The half-flash conversion technique means that there is no need to generate a clock signal for the ADC. The AD7824 and AD7828 can be interfaced easily to most popular microprocessors.The AD7824 and AD7828 are fabricated in an advanced, all ion-implanted, Linear-Compatible CMOS process (LC2MOS) and have low power dissipation of 40 mW (typ). The AD7824 is available in a 0.3"" wide, 24-pin ""skinny"" DIP, while the AD7828 is available in a 0.6"" wide, 28-pin DIP and in 28- terminal surface mount packages.

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