AD7862ARS-10

Product Summary

The AD7862BR-10 is a high speed, low power, dual 12-bit A/D converter that operates from a single +5 V supply. The part contains two 4 ms successive approximation ADCs, two track/hold amplifiers, an internal +2.5 V reference and a high speed parallel interface. There are four analog inputs that are grouped into two channels (A & B) selected by the A0 input. Each channel has two inputs (VA1 & VA2 or VB1 & VB2) that can be sampled and converted simultaneously thus preserving the relative phase information of the signals on both analog inputs. The AD7862BR-10 accepts an analog input range of ±10 V. Overvoltage protection on the analog inputs for the part allows the input voltage to go to ±17 V, ±7 V or +7 V, respectively, without causing damage. The applications of the AD7862BR-10 include AC Motor Control, Uninterrupted Power Supplies, Data Acquisition Systems, Communications.

Parametrics

AD7862BR-10 absolute maximum ratings: (1)VDD to AGND: -0.3 V to +7 V; (2)VDD to DGND: -0.3 V to +7 V; (3)AGND to DGND: ±0.3 V; (4)Analog Input Voltage to AGND: ±17 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 Commercial (A, B Version): -40℃ to +85℃; Extended (S Version): -55℃ to +125℃; (9)Storage Temperature Range: -65℃ to +150℃; (10)Junction Temperature: +150℃; (11)Plastic DIP Package, Power Dissipation: 670 mW, θJA Thermal Impedance: 116℃/W; Lead Temperature, (Soldering 10 sec): +260℃; (12)Ceramic DIP Package, Power Dissipation: 670 mW, θJA, Thermal Impedance: 116℃/W; Lead Temperature, (Soldering 10 sec): +260℃; (13)SOIC Package, Power Dissipation: 450 mW, θJA Thermal Impedance: 110℃/W; Lead Temperature, Soldering: Vapor Phase (60 sec): +215℃; Infrared (15 sec): +220℃; (14)SSOP Package, Power Dissipation: 450 mW; θJA Thermal Impedance: 110℃/W; Lead Temperature, Soldering: Vapor Phase (60 sec): +215℃; Infrared (15 sec): +220℃.

Features

AD7862BR-10 features: (1)Two Fast 12-Bit ADCs; (2)Four Input Channels; (3)Simultaneous Sampling & Conversion; (4)4 ms Throughput Time; (5)Single Supply Operation; (6)Selection of Input Ranges: ±10 V for AD7862-10; ±2.5 V for AD7862-3; 0 V to 2.5 V for AD7862-2; (7)High Speed Parallel Interface; (8)Low Power, 60 mW typ; (9)Power Saving Mode, 50 mW typ; (10)Overvoltage Protection on Analog Inputs; (11)14-Bit Pin Compatible Upgrade (AD7863).

Diagrams