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

DAC908 (ACTIVE)

8-Bit 165-MSPS Digital-to-Analog Converter (DAC)

8-Bit 165-MSPS Digital-to-Analog Converter (DAC)  - DAC908
 

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

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Parametrics Compare all products in High Speed DACs (>10MSPS)

 
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 DAC2900 DAC2902 DAC2904 DAC900 DAC900-Q1 DAC902 DAC904
200     125     125     125     200     200     200     200    
Low Power     Low Power     Low Power     Low Power     Low Power     Low Power     Low Power     Low Power    
8     10     12     14     10     10     12     14    
1     2     2     2     1     1     1     1    
Parallel CMOS     Parallel CMOS     Parallel CMOS     Parallel CMOS     Parallel CMOS     Parallel CMOS     Parallel CMOS     Parallel CMOS    
67     80     80     80     68     68     67     68    
3.0
5.0    
3.3
5.0    
3.3
5.0    
3.3
5.0    
3.0
5.0    
3.3
5.0    
3.0
5.0    
3.0
5.0    
170     310     310     310     170     170     170     170    
-40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 125     -40 to 85     -40 to 85    
SOIC
TSSOP    
TQFP     TQFP     TQFP     SOIC
TSSOP    
TSSOP     SOIC
TSSOP    
SOIC
TSSOP    
28SOIC: 184 mm2: 10.3 x 17.9(SOIC)
28TSSOP: 62 mm2: 6.4 x 9.7(TSSOP)    
48TQFP: 81 mm2: 9 x 9(TQFP)     48TQFP: 81 mm2: 9 x 9(TQFP)     48TQFP: 81 mm2: 9 x 9(TQFP)     28SOIC: 184 mm2: 10.3 x 17.9(SOIC)
28TSSOP: 62 mm2: 6.4 x 9.7(TSSOP)    
28TSSOP: 62 mm2: 6.4 x 9.7(TSSOP)     28SOIC: 184 mm2: 10.3 x 17.9(SOIC)
28TSSOP: 62 mm2: 6.4 x 9.7(TSSOP)    
28SOIC: 184 mm2: 10.3 x 17.9(SOIC)
28TSSOP: 62 mm2: 6.4 x 9.7(TSSOP)    
Catalog     Catalog     Catalog     Catalog     Catalog     Automotive     Catalog     Catalog    
1x     1x     1x     1x     1x     1x     1x     1x    
Current Source     Current Source     Current Source     Current Source     Current Source     Current Source     Current Source     Current Source    
Differential     Differential     Differential     Differential     Differential     Differential     Differential     Differential    
Ext
Int    
Ext
Int    
Ext
Int    
Ext
Int    
Ext
Int    
Ext
Int    
Ext
Int    
Ext
Int