Dual 12-Bit 8-Bit Byte Double-Buffered CMOS D/A Converter
a
Dual 12-Bit (8-Bit Byte) Double-Buffered CMOS D/A Converter DAC8248
PIN CONNECTIONS 24-Pin 0.3" Cerdip (W Suffix), 24...
Description
a
Dual 12-Bit (8-Bit Byte) Double-Buffered CMOS D/A Converter DAC8248
PIN CONNECTIONS 24-Pin 0.3" Cerdip (W Suffix), 24-Pin Epoxy DIP (P Suffix), 24-Pin SOL (S Suffix)
FEATURES Two Matched 12-Bit DACs on One Chip 12-Bit Resolution with an 8-Bit Data Bus Direct Interface with 8-Bit Microprocessors Double-Buffered Digital Inputs RESET to Zero Pin 12-Bit Endpoint Linearity ( ؎1/2 LSB) Over Temperature ؉5 V to ؉ 15 V Single Supply Operation Latch-Up Resistant Improved ESD Resistance Packaged in a Narrow 0.3" 24-Pin DIP and 0.3" 24-Pin SOL Package Available in Die Form APPLICATIONS Multichannel Microprocessor-Controlled Systems Robotics/Process Control/Automation Automatic Test Equipment Programmable Attenuator, Power Supplies, Window Comparators Instrumentation Equipment Battery Operated Equipment GENERAL DESCRIPTION
The DAC8248’s double-buffered digital inputs allow both DAC’s analog output to be updated simultaneously. This is particularly useful in multiple DAC systems where a common LDAC signal updates all DACs at the same time. A single RESET pin resets both outputs to zero. The DAC8248’s monolithic construction offers excellent DACto-DAC matching and tracking over the full operating temperature range. The DAC consists of two thin-film R-2R resistor ladder networks, two 12-bit, two 8-bit, and two 4-bit data registers, and control logic circuitry. Separate reference input and feedback resistors are provided for each DAC. The DAC8248
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