AD7865ASZ-1

Product Summary

The AD7865ASZ-1 is a kind of fast, low power, four-channel simultaneous sampling 14-bit A/D converter that operates from a single 5 V supply.The AD7865ASZ-1 contains a 2.4 μs successive approximation ADC, four track/hold amplifiers, 2.5 V reference, on-chip clock oscillator, signal conditioning circuitry and a high speed parallel interface.The AD7865ASZ-1 allows any subset of the four channels to be converted in order to maximize the throughput rate on the selected sequence.The typical applications of the AD7865ASZ-1 include: (1)AC motor control; (2)uninterruptible power supplies; (3)industrial power meters/monitors; (4)data acquisition systems; (5)communications.

Parametrics

AD7865ASZ-1 absolute maximum ratings: (1)VDD to AGND: –0.3 V to +7 V; (2)VDD to DGND: –0.3 V to +7 V; (3)VDRIVE to DGND: VDD + 0.3 V; (4)Analog Input Voltage to AGND: AD7865-1 (±10 V Input Range): ±18 V; AD7865-1 (±5 V Input Range): ±9 V; (5)Reference Input Voltage to AGND: –0.3 V to VDD + 0.3 V; (6)Digital Input Voltage to DGND: –0.3 V to VDD + 0.3 V; (7)Digital Output Voltage to DGND: –0.3 V to VDD + 0.3 V; (8)Operating Temperature Range: –40℃ to +85℃; (9)Storage Temperature Range: –65℃ to +150℃; (10)Junction Temperature: 150℃; (11)PQFP Package, Power Dissipation: 450 mW; (12)θJA Thermal Impedance: 95℃/W; (13)Lead Temperature, Soldering: Vapor Phase (60 sec): 215℃; Infrared (15 sec): 220℃.

Features

AD7865ASZ-1 features: (1)Fast (2.4 μs) 14-Bit ADC; (2)Four Simultaneously Sampled Inputs; (3)Four Track/Hold Amplifiers; (4)0.35 μs Track/Hold Acquisition Time; (5)2.4 μs Conversion Time per Channel; (6)HW/SW Select of Channel Sequence for Conversion; (7)Single Supply Operation; (8)Selection of Input Ranges: 10 V, 5 V and 2.5 V, 0 V to 5 V and 0 V to 2.5 V; (9)High Speed Parallel Interface Which Also Allows Interfacing to 3 V Processors; (10)Low Power, 115 mW Typ; (11)Power Saving Mode, 15 μW Typ; (12)Overvoltage Protection on Analog Inputs.

Diagrams