1FEATURES
• Qualified for Automotive Applications
• Single +5V OR +3V Operation
• High SFDR: 5MHz Output at 100MSPS: 68dBc
• Low Glitch: 3pV-s
• Low Power: 170mW at +5V
• Internal Reference: Optional External
Reference Adjustable Full-Scale Range
Multiplying Option
• Latch-Up Performance Meets 100 mA
Per JESD 78, Class I

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

DESCRIPTION
The DAC900 is a high-speed, Digital-to-Analog Converter (DAC) offering a 10-bit resolution option within the
SpeedPlus family of high-performance converters. Featuring pin compatibility among family members, the
DAC908, DAC902, and DAC904 provide a component selection option to an 8-, 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 DAC900 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 DAC900 has a high impedance (200kΩ) 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 singleended 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 DAC900 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 batteryoperated systems.
Further optimization can be realized by lowering the output current with the adjustable full-scale option.
For noncontinuous operation of the DAC900, a power-down mode results in only 45mW of standby power.
The DAC900 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 DAC900.
The reference structure of the DAC900 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 DAC900 is available in a TSSOP-28 (PW) package.