12-bit DAC
Overview
The TI-12DAC is a 12-bit digital-to-analog converter (DAC) with guaranteed 12-bit monotonicity performance within the automotive temperature range. The DAC operates with a single 1.8 V power supply and external reference voltages. There is an option of using internal or external current source. The lower 8 bits of digital-to-analog conversion are implemented as the R-2R Ladder, while the upper 4 bits are implemented as the Thermometer (Fully-Decoded) DAC. This combination allows to obtain 12-bit resolution, requiring only ensuring of accuracy of each part: 8-bit R-2R DAC and 4-bit potentiometer DAC.
Key Features
- Resolution: 12 bits
- Longest conversion: 35 ns
- 439 uV LSB with 1.8 full-scale range
- 12-bit linearity and monotonicity
Benefits
- Combination of R-2R Ladder and Binary-to-Thermometer Decoder
- Internal current source/external 100 uA current input selection
- ESD-protection
- Low power consumption
Block Diagram
Applications
- Microprocessor Controlled Gain Circuits
- Microprocessor Controlled Attenuator Circuits
- Generation Precision AGC Circuits
- Bus Structured Instruments
- Process control
- Data acquisition systems
- Closed-loop servo-control
- PC peripherals
- Portable instrumentation
Deliverables
- Datasheet
- GDSII database
- Customer support
Technical Specifications
Foundry, Node
X-FAB XP018 (180 nm)
Maturity
Silicon proven
Availability
Yes