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DAC7728SPAG-DAC7728SRTQT
Octal, Low Power, 12-Bit, +/-16.5 V Output Parallel Input Digital-To-Analog Converter
DAC7728
DAC7728ogal Monitro
DAC7728REF-A
IOVDD DGND DVDD AVDD AVSS-0OUT
www.ti.com SBAS461A –JUNE 2009–REVISED NOVEMBER 2009
Output, Parallel Input
DIGITAL-TO-ANALOG CONVERTER
1FEATURES DESCRIPTION Bipolar Output: ±3V, upto ±16.5V The DAC7728 is a low-power, octal, 12-bit
digital-to-analog converter (DAC). With a 5V
• Unipolar Output: 0Vto +33Vreference, the output can either bea bipolar ±15V
• 12-Bit Resolution voltage when operating froma dual ±15.5V (or
• Low Power: 13.5mW/Ch higher) power supply, ora unipolar 0V to +30V
Relative Accuracy: 1LSB Max voltage when operating
Witha 5.5V reference,
• Flexible User Calibration ±16.5V fora dual ±17V
• Low Zero/Gain Error:±1 LSB Max unipolar 0Vto +33V voltage when operating froma
Low Glitch: 4nV-s +33.5V (or higher) power supply. This DAC provides
low-power operation, good linearity, and low glitch
• Settling Time: 15μs over the specified temperature range of –40°Cto
• Channel Monitor Output +105°C. This deviceis trimmedin manufacturing and
• Programmable Gain: x4,x6 has very low zero and full-scale error.In addition,
user calibration can be performed over the entire
• Programmable Offset signal chain. The output range canbe offsetby using
• 12-Bit Parallel Interface: the DAC Offset Register.
50MHz (Write Operation)The DAC7728 featuresa standard, high-speed, 12-bit
• Packages: QFN-56 (8mmx 8mm), parallel interface that operatesat upto 50MHz andis
TQFP-64 (10mmx 10mm) 1.8V, 3V, and 5V logic compatible,to communicate
witha DSPor microprocessor. The eight DACs and
APPLICATIONS the auxiliary registers are addressed with five address
• Automatic Test Equipment lines. The device features double-buffered interface
logic. An asynchronous load input (LDAC) transfers
• PLC and Industrial Process Controldata from the DAC data registerto the DAC latch.
• Communications The asynchronous CLR input sets the outputof all
eight DACsto AGND. The VMON pinisa monitor
output that connectsto the individual analog outputs,
the offset DAC, and the reference buffer outputs (mux). pin-to-pin compatible with the
