AD768

a FEATURES 30 MSPS Update Rate 16-Bit Resolution Linearity: 1/2 LSB DNL @ 14 Bits 1 LSB INL @ 14 Bits Fast Settling: 25 ns Full-Scale Settling to 0.025% SFDR @ 1 MHz Output: 86 dBc THD @ 1 MHz Output: 71 dBc Low Glitch Impulse: 35 pV-s Power Dissipation: 465 mW On-Chip 2.5 V Reference Edge-Triggered Latches Multiplying Reference Capability APPLICATIONS Arbitrary Waveform Generation Communications Waveform Reconstruction Vector Stroke Display PRODUCT DESCRIPTION DCOM (MSB) DB15 16-Bit, 30 MSPS D/A Converter AD768 FUNCTIONAL BLOCK DIAGRAM VDD AD768 MSBs: SEGMENTED CURRENT SOURCES AND SWITCHES MSB DECODER AND EDGETRIGGERED BIT LATCHES LSBs: CURRENT SOURCES, SWITCHES, AND 1kΩ R-2R LADDERS IOUTA IOUTB 1k 1k LADCOM DB0 (LSB) CLOCK NC 2.5V BANDGAP REFERENCE CONTROL AMP VEE REFCOM REFOUT IREFIN NR The AD768 is a 16-bit, high speed digital-to-analog converter (DAC) that offers exceptional ac and dc performance. The AD768 is manufactured on ADI’s Advanced Bipolar CMOS (ABCMOS) process, combining the speed of bipolar transistors, the accuracy of laser-trimmable thin film resistors, and the efficiency of CMOS logic. A segmented current source architecture is combined with a proprietary switching technique to reduce glitch energy and maximize dynamic accuracy. Edge triggered input latches and a temperature compensated bandgap reference have been integrated to provide a complete monolithic DAC solution. The AD768 is a current-output DAC with a nominal full-scale output current ...