Product Summary

The AD7864ASZ-1 is a high speed, low power, 4-channel simultaneous sampling 12-bit A/D converter that operates from a single +5 V supply. The part contains a 1.65 ms 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 input signals on four channels are sampled simultaneously, thus preserving the relative phase information of the signals on the four analog inputs. The part accepts analog input ranges of ±10 V, ±5 V (AD7864-1), 0 V to 2.5 V, 0 V to 5 V for AD7864ASZ-1.

Parametrics

Absolute maximum ratings: (1)VDD to AGND: –0.3 V to +7 V; (2)VDD to DGND: –0.3 V to +7 V; (3)Analog Input Voltage to AGND: –1 V to +20 V; (4)Reference Input Voltage to AGND: –0.3 V to VDD + 0.3 V; (5)Digital Input Voltage to DGND: –0.3 V to VDD + 0.3 V; (6)Digital Output Voltage to DGND: –0.3 V to VDD + 0.3 V; (7)Operating Temperature Range: Commercial (A, B Version): –40℃ to +85℃; (8)Storage Temperature Range: –65℃ to +150℃; (9)Junction Temperature: +150℃; (10)MQFP Package, Power Dissipation: 450 mW.

Features

Features: (1)High Speed (1.65êms) 12-Bit ADC; (2)Four Simultaneously Sampled Inputs; (3)Four Track/Hold Amplifiers; (4)0.35êms Track/Hold Acquisition Time; (5)1.65 ms Conversion Time per Channel; (6)HW/SW Select of Channel Sequence for Conversion; (7)Single Supply Operation; (8)Selection of Input Ranges: ±10 V, 65 V for AD7864-1, ±2.5 V for AD7864-3, 0 V to 2.5 V, 0 V to 5 V for AD7864-2; (9)High Speed Parallel Interface Which Also Allows Interfacing to 3 V Processors; (10)Low Power, 90 mW Typ; (11)Power Saving Mode, 20μmW Typ; (12)Overvoltage Protection on Analog Inputs.

Diagrams

<IMG src="http://www.seekic.com/uploadfile/ic-mfg/20128231023317.jpg" border=0>

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
AD7864ASZ-1
AD7864ASZ-1

IC ADC 12BIT DUAL 4CH 44-MQFP
Data Sheet
0-1: $15.22
1-10: $14.08
10-100: $12.02
100-250: $11.03
250-500: $10.50
500-1000: $10.14
AD7864ASZ-1REEL
AD7864ASZ-1REEL

IC ADC 12BIT DUAL 4CH 44-MQFP
Data Sheet
0-800: $10.14