ZHCSSI1D august 2008 – august 2023 DAC5311 , DAC6311 , DAC7311
PRODUCTION DATA
- 1
- 1 特性
- 2 应用
- 3 说明
- 4 Revision History
- 5 Device Comparison
- 6 Pin Configuration and Functions
-
7 Specifications
- 7.1 Absolute Maximum Ratings
- 7.2 ESD Ratings
- 7.3 Recommended Operating Conditions
- 7.4 Thermal Information
- 7.5 Electrical Characteristics
- 7.6 Timing Requirements
- 7.7 Timing Diagrams
- 7.8 Typical Characteristics: AVDD = 5 V
- 7.9 Typical Characteristics: AVDD = 3.6 V
- 7.10 Typical Characteristics: AVDD = 2.7 V
- 8 Detailed Description
- 9 Application and Implementation
- 10Device and Documentation Support
- 11Mechanical, Packaging, and Orderable Information
8.3.1 DAC Section
The DACx311 are fabricated using Texas Instruments' proprietary HPA07 process technology. The architecture consists of a string DAC followed by an output buffer amplifier. Because there is no reference input pin, the power supply (AVDD) acts as the reference. Figure 8-1 shows a block diagram of the DAC architecture.
Figure 8-1 DACx311 ArchitectureThe input coding to the DACx311 is straight binary, so the ideal output voltage is given by:
Equation 1.
where
- n = resolution in bits; either 8 (DAC5311), 10 (DAC6311), or 12 (DAC7311).
- D = decimal equivalent of the binary code that is loaded to the DAC register. D ranges from 0 to 255 for 8-bit DAC5311, 0 to 1023 for the 10-bit DAC6311, and 0 to 4095 for the 12-bit DAC7311.