DAC908 8-Bit 165-MSPS Digital-to-Analog Converter (DAC) | TI.com

DAC908
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
8-Bit 165-MSPS Digital-to-Analog Converter (DAC)

 

Description

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.

Features

  • 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

Parametrics

Compare all products in High-speed DACs (>10MSPS) Email Download to Excel
Part number Order Sample/update rate (MSPS) Features Resolution (Bits) DAC channels Interface SFDR (dB) Supply voltage(s) (V) Power consumption (Typ) (mW) Operating temperature range (C) Package Group Package size: mm2:W x L (PKG) Rating Interpolation Architecture Output type Reference: type
DAC908 Order now 200     Low Power     8     1     Parallel CMOS     70     3.0
5.0    
170     -40 to 85     SOIC | 28
TSSOP | 28    
28SOIC: 184 mm2: 10.3 x 17.9 (SOIC | 28)
28TSSOP: 62 mm2: 6.4 x 9.7 (TSSOP | 28)    
Catalog     1x     Current Source     Differential     Ext
Int    
DAC2900 Order now 125     Low Power     10     2     Parallel CMOS     80     3.3
5.0    
310     -40 to 85     TQFP | 48     48TQFP: 81 mm2: 9 x 9 (TQFP | 48)     Catalog     1x     Current Source     Differential     Ext
Int    
DAC2902 Samples not available 125     Low Power     12     2     Parallel CMOS     82     3.3
5.0    
310     -40 to 85     TQFP | 48     48TQFP: 81 mm2: 9 x 9 (TQFP | 48)     Catalog     1x     Current Source     Differential     Ext
Int    
DAC2904 Order now 125     Low Power     14     2     Parallel CMOS     82     3.3
5.0    
310     -40 to 85     TQFP | 48     48TQFP: 81 mm2: 9 x 9 (TQFP | 48)     Catalog     1x     Current Source     Differential     Ext
Int    
DAC900 Samples not available 200     Low Power     10     1     Parallel CMOS     76     3.0
5.0    
170     -40 to 85     SOIC | 28
TSSOP | 28    
28SOIC: 184 mm2: 10.3 x 17.9 (SOIC | 28)
28TSSOP: 62 mm2: 6.4 x 9.7 (TSSOP | 28)    
Catalog     1x     Current Source     Differential     Ext
Int    
DAC900-Q1 Order now 200     Low Power     10