DAC902 - 12-Bit 165-MSPS Digital-to-Analog Converter (DAC)

Updated : 2020-01-09 14:30:08
Description

The DAC902 is a high-speed, Digital-to-Analog Converter (DAC) offering a 12-bit resolution option within the SpeedPlus Family of high-performance converters. Featuring pin compatibility among family members, the DAC908, DAC900, and DAC904 provide a component selection option to an 8-, 10-, 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 DAC902 is optimized to provide a high Spurious-Free Dynamic Range (SFDR) for single-tone, as well as for multi-tone signals—essential when used for the transmit signal path of communication systems.

The DAC902 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 DAC902 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 DAC902, a power-down mode results in only 45mW of standby power.

The DAC902 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 DAC902.

The reference structure of the DAC902 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 DAC902 is available in the SO-28 and TSSOP-28 packages.

Products containing the "DAC902" keyword are: DAC902E , DAC902E , DAC902E. , DAC902E/2K5 , DAC902E/2K5 DAC902E/2K5G , DAC902E/2K5G4 , DAC902E2K5 , DAC902EG4 , DAC902EVM , DAC902U , DAC902U , DAC902U/1K , DAC902U/1K , DAC902U/1KG4 , DAC902U/1KG4 DAC902E/2K5 , DAC902U1K , DAC902UG4 , DAC902UG4
Features

  • SINGLE +5V OR +3V OPERATION
  • HIGH SFDR: 5MHz 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
    • COMMUNICATION TRANSMIT CHANNELS:
           WLL, Cellular Base Station
           Digital Microwave Links
           Cable Modems
    • WAVEFORM GENERATION:
           Direct Digital Synthesis (DDS)
           Arbitrary Waveform Generation (ARB)
    • MEDICAL/ULTRASOUND
    • HIGH-SPEED INSTRUMENTATION AND CONTROL
    • VIDEO, DIGITAL TV