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 signals—essential 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.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | DAC908 SpeedPlus 8-Bit 165-MSPS Digital-to-Analog Converter datasheet (Rev. B) | 23 Jan 2003 | |
| EVM User's guide | DAC90x Evaluation Module User's Guide | 08 Aug 2017 | ||
| Application note | Wideband Complementary Current Output DAC Single-Ended Interface (Rev. A) | 08 May 2015 | ||
| Application note | High Speed, Digital-to-Analog Converters Basics (Rev. A) | 23 Oct 2012 | ||
| User guide | DEM-DAC90x: Evaluation Fixture for the DAC900, DAC902, DAC904, DAC908 | 27 Sep 2000 |
For additional terms or required resources, click any title below to view the detail page where available.
High-speed digital-to-analog converters (DACs) most often use a (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| SOIC (DW) | 28 | Ultra Librarian |
| TSSOP (PW) | 28 | Ultra Librarian |
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