AD7864ASZ-1 Datasheet PDF - ADI

●The AD7864ASZ-1 is a high speed, low power 4-channel simultaneous sampling 12-bit Analog-to-digital Converter (ADC) that operates from a single 5V supply. The part contains a 1.65µs successive approximation ADC, four track-and-hold amplifiers, a 2.5V reference, an on-chip clock oscillator, signal conditioning circuitry and a high speed parallel interface. The input signals on four channels sample simultaneously preserving the relative phase information of the signals on the four analog inputs. Any subset of the four channels can be converted to maximize the throughput rate on the selected sequence. Select the channels to convert via hardware or software. A single conversion start signal (CONVST) simultaneously places all the track-and-holds into hold and initiates a conversion sequence for the selected channels. The EOC signal indicates the end of each individual conversion in the selected conversion sequence. The BUSY signal indicates the end of the conversion sequence.

● 4 Simultaneously sampled inputs

● 4 Track-and-hold amplifiers

● HW/SW Select of channel sequence for conversion

● Single-supply operation

● High speed parallel interface that allows interfacing to 3V processors

● Overvoltage protection on analog inputs