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.