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.

• 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

• Resolution (Bits)
• 8
• Number of DAC channels (#)
• 1
• Interface type
• Parallel CMOS
• Sample/update rate (MSPS)
• 200
• Features
• Low Power
• Rating
• Catalog
• Interpolation
• 1x
• Power consumption (Typ) (mW)
• 170
• SFDR (dB)
• 70
• Architecture
• Current Source
• Operating temperature range (C)
• -40 to 85
• Reference type
• Ext, Int

DAC908的完整型号有：DAC908E、DAC908E/2K5、DAC908U、DAC908U/1K，以下是这些产品的关键参数及官网采购报价：

DAC908E，工作温度：-40 to 85，封装：TSSOP (PW)-28，包装数量MPQ：50个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网DAC908E的批量USD价格：3.892（1000+）

DAC908E/2K5，工作温度：-40 to 85，封装：TSSOP (PW)-28，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网DAC908E/2K5的批量USD价格：3.243（1000+）

DAC908U，工作温度：-40 to 85，封装：SOIC (DW)-28，包装数量MPQ：20个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网DAC908U的批量USD价格：3.892（1000+）

DAC908U/1K，工作温度：-40 to 85，封装：SOIC (DW)-28，包装数量MPQ：1000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网DAC908U/1K的批量USD价格：3.243（1000+）

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High-speed digital-to-analog converters (DACs) most often use a (...)