ADI AD7828LPZ

The AD7824 and AD7828 are high speed, multichannel, 8-bit ADCs with a choice of four (AD7824) or eight (AD7828) multiplexed analog inputs. A half-flash conversion technique gives a fast conversion rate of 2.5 µs per channel, and the parts have a built-in track-and-hold function capable of digitizing full-scale signals of 10 kHz (157 mV/k µs slew rate) on all channels. The AD7824 and AD7828 operate from a single 5 V supply and have an analog input range of 0V to 5V, 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-lead “skinny” DIP, while the AD7828 is available in a 0.6" wide, 28-lead DIP and in 28-terminal surfacemount packages.

• 4 or 8 Analog Input Channels
• Built-In Track-and-Hold Function
• 10 kHz Signal Handling on Each Channel
• Fast Microprocessor Interface
• Single 5 V Supply
• Low Power: 50 mW
• Fast Conversion Rate: 2.5 µs/ Channel
• Tight Error Specification: 1/2 LSB