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FEATURES AD7776: Single Channel AD7777: 4-Channel AD7778: 8-Channel Fast 10-Bit ADC: 2.5 s Worst Case +5 V Only Half-Scale Conversion Option Fast Interface Port Power-Down Mode APPLICATIONS HDD Servos Instrumentation GENERAL DESCRIPTION
LC2MOS, High Speed 1-, 4- & 8-Channel 10-Bit ADCs AD7776/AD7777/AD7778*
FUNCTIONAL BLOCK DIAGRAMS
CLKIN CONTROL REGISTER 10 AIN 1 MUX T/H 10-BIT ADC ADCREG1 10 CREFIN VBIAS REFIN RTN VSWING CONTROL LOGIC AGND REF REFOUT REFIN DB0–DB9 VCC
AD7776
AGND
VCC
The AD7776, AD7777 and AD7778 are a family of high speed, multichannel, 10-bit ADCs primarily intended for use in R/W head positioning servos found in high density hard disk drives. They have unique input signal conditioning features that make them ideal for use in such single supply applications.