Overview
The TLC5628CDW is an octal 8-bit voltage output digital-to-analog converter (DAC) produced by Texas Instruments. This device is designed for applications requiring multiple analog outputs controlled by a digital interface. The TLC5628CDW operates from a single 5-V supply and features a simple three-wire serial bus interface that is CMOS compatible, making it easy to interface with microprocessors and microcontrollers. The device includes internal power-on reset, low-power consumption, and simultaneous update facilities, ensuring reliable and efficient operation.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Number of DACs | Octal (8) | 8 |
| Resolution | 8-bit | 8-bit |
| Supply Voltage | Single supply | 5 V |
| Operating Temperature Range | TLC5628C | 0°C to 70°C |
| Operating Temperature Range | TLC5628I | –40°C to 85°C |
| Package | SOIC (DW) | 16 pins |
| Interface | Serial (three-wire) | CMOS compatible |
| Output Range | Programmable 1x or 2x | Reference voltage |
| Power-On Reset | Internal | Yes |
| Power Consumption | Low power | Typically 4 mA at 5 V |
Key Features
- Eight 8-bit voltage output DACs with buffered reference inputs (high impedance)
- 5-V single-supply operation
- Serial interface (three-wire) that is CMOS compatible
- Programmable 1 or 2 times output range
- Simultaneous update facility through LDAC control
- Internal power-on reset for repeatable start-up conditions
- Low-power consumption
- Half-buffered output
- Digital inputs with Schmitt triggers for high-noise immunity
Applications
- Programmable voltage sources
- Digitally controlled amplifiers/attenuators
- Mobile communications
- Automatic test equipment
- Process monitoring and control
- Signal synthesis
Q & A
- What is the resolution of the TLC5628CDW DACs?
The TLC5628CDW has 8-bit resolution for each of its eight DACs.
- What is the operating supply voltage for the TLC5628CDW?
The TLC5628CDW operates from a single 5-V supply.
- What types of temperature ranges are supported by the TLC5628C and TLC5628I?
The TLC5628C operates from 0°C to 70°C, while the TLC5628I operates from –40°C to 85°C.
- How does the TLC5628CDW interface with microcontrollers?
The TLC5628CDW uses a simple three-wire serial bus interface that is CMOS compatible, making it easy to interface with microprocessors and microcontrollers.
- What is the purpose of the LDAC pin on the TLC5628CDW?
The LDAC pin controls the simultaneous update of all DAC outputs. When LDAC is taken from high to low, the DAC outputs are updated.
- Does the TLC5628CDW require external trimming?
No, the TLC5628CDW does not require external trimming.
- What is the typical power consumption of the TLC5628CDW?
The typical power consumption is 4 mA at 5 V.
- What are the reference input characteristics of the TLC5628CDW?
The reference inputs are high impedance and buffered, ensuring minimal load on the reference sources.
- How are the DAC outputs updated in the TLC5628CDW?
The DAC outputs are updated simultaneously through the control of the LDAC pin.
- What are some common applications of the TLC5628CDW?
Common applications include programmable voltage sources, digitally controlled amplifiers/attenuators, mobile communications, automatic test equipment, process monitoring and control, and signal synthesis.
