+3.3 V to +5 V Quad/Octal 10-Bit DACs
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FEATURES Four 10-Bit DACs in One Package Serial and Parallel Loading Facilities Available AD7804 Quad 10-Bit Serial Lo...
Description
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FEATURES Four 10-Bit DACs in One Package Serial and Parallel Loading Facilities Available AD7804 Quad 10-Bit Serial Loading AD7805 Quad 10-Bit Parallel Loading AD7808 Octal 10-Bit Serial Loading AD7809 Octal 10-Bit Parallel Loading +3.3 V to +5 V Operation Power-Down Mode Power-On Reset Standby Mode (All DACs/Individual DACs) Low Power All CMOS Construction 10-Bit Resolution Double Buffered DAC Registers Dual External Reference Capability APPLICATIONS Optical Disk Drives Instrumentation and Communication Systems Process Control and Voltage Setpoint Control Trim Potentiometer Replacement Automatic Calibration GENERAL DESCRIPTION
+3.3 V to +5 V Quad/Octal 10-Bit DACs AD7804/AD7805/AD7808/AD7809*
FUNCTIONAL BLOCK DIAGRAMS
AVDD DVDD REFOUT REFIN AVDD DIVIDER COMP CHANNEL D CONTROL REG DATA REGISTER VBIAS DAC C DAC REGISTER MUX 1.23V REF AGND DGND VOUTF* POWER ON RESET
AD7804/ AD7808
VBIAS DAC D
VOUTE*
VOUTD
MUX
VOUTC
CHANNEL C CONTROL REG
DATA REGISTER VBIAS MUX
DAC REGISTER
DAC B
VOUTB
CHANNEL B CONTROL REG
DATA REGISTER VBIAS
DAC REGISTER
MUX
DAC A
VOUTA
PD**
CHANNEL A CONTROL REG SYSTEM CONTROL REG
DATA REGISTER
DAC REGISTER VOUTH*
The AD7804/AD7808 are quad/octal 10-bit digital-to-analog converters, with serial load capabilities, while the AD7805/AD7809 are quad/octal 10-bit digital-to-analog converters with parallel load capabilities. These parts operate from a +3.3 V to +5 V (± 10%) power supply and incorporates an on-chip reference. These DACs provi...
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