The DAC908 is a high-speed, Digital-to-Analog Converter (DAC) offering an 8-bit resolution option within the _SpeedPlus_ family of high-performance converters. Featuring pin compatibility among family members, the DAC900, DAC902, and DAC904 provide a component selection option to an 10-, 12-, and 14-bit resolution, respectively. All models within this family of DACs support update rates in excess of 165MSPS with excellent dynamic performance, and are especially suited to fulfill the demands of a variety of applications.
●The advanced segmentation architecture of the DAC908 is optimized to provide a high Spurious-Free Dynamic Range (SFDR) for single-tone, as well as for multi-tone signalsessential when used for the transmit signal path of communication systems.
●The DAC908 has a high impedance (200k) current output with a nominal range of 20mA and an output compliance of up to 1.25V. The differential outputs allow for both a differential or single-ended analog signal interface. The close matching of the current outputs ensures superior dynamic performance in the differential configuration, which can be implemented with a transformer.
●Utilizing a small geometry CMOS process, the monolithic DAC908 can be operated on a wide, single-supply range of +2.7V to +5.5V. Its low power consumption allows for use in portable and battery-operated systems. Further optimization can be realized by lowering the output current with the adjustable full-scale option.
●For noncontinuous operation of the DAC908, a power-down mode results in only 45mW of standby power.
●The DAC908 comes with an integrated 1.24V bandgap reference and edge-triggered input latches, offering a complete converter solution. Both +3V and +5V CMOS logic families can be interfaced to the DAC908.
●The reference structure of the DAC908 allows for additional flexibility by utilizing the on-chip reference, or applying an external reference. The full-scale output current can be adjusted over a span of 2mA to 20mA, with one external resistor, while maintaining the specified dynamic performance.
●The DAC908 is available in the SO-28 and TSSOP-28 packages.
● SINGLE +5V OR +3V OPERATION
● HIGH SFDR: 5.04MHz Output at 100MSPS: 67dBc
● LOW GLITCH: 3pV-s
● LOW POWER: 170mW at +5V
● INTERNAL REFERENCE:
● Optional Ext. Reference
● Adjustable Full-Scale Range
● Multiplying Option
● APPLICATIONS
● MEDICAL INSTRUMENTATION
● Ultrasound (DBF)
● VIDEO, DIGITAL TV
● WAVEFORM GENERATION
● Direct Digital Synthesis (DDS)
● Arbitrary Waveform Generation (ARB)
● TEST INSTRUMENTATION
● COMMUNICATIONS
