Overview
The TLC5628CDWR is an octal 8-bit voltage output digital-to-analog converter (DAC) produced by Texas Instruments. This device is part of the TLC5628 series, which includes the TLC5628C and TLC5628I models. The TLC5628CDWR operates from a single 5-V supply and features high-impedance reference inputs, making it suitable for a variety of applications requiring precise analog output control.
The device is packaged in a 16-pin small-outline (SOIC) package, which is ideal for space-critical applications. It includes a power-on reset function to ensure repeatable start-up conditions and features low-power consumption, making it energy-efficient.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOIC (DW) | - |
| Pins | 16 | - |
| Operating Temperature Range | 0 to 70 | °C |
| Supply Voltage (VDD) | 4.75 to 5.25 | V |
| Reference Voltage Range | GND – 0.3 V to VDD + 0.3 V | V |
| Analog Full-Scale Output Voltage | 3.5 | V |
| Load Resistance (RL) | 10 kΩ | - |
| CLK Frequency | 1 MHz | - |
| Supply Current (IDD) | 4 mA | - |
| Output Slew Rate | - | V/μs |
Key Features
- Eight 8-bit voltage output DACs with buffered reference inputs (high impedance)
- 5-V single-supply operation
- Serial interface with CMOS compatibility for easy interfacing with microprocessors and microcontrollers
- 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 operating temperature range for the TLC5628C?
The operating temperature range for the TLC5628C is from 0°C to 70°C.
- What is the package type and pin count of the TLC5628CDWR?
The TLC5628CDWR is packaged in a 16-pin small-outline (SOIC) package.
- How does the serial interface of the TLC5628 work?
The serial interface is a three-wire bus that is CMOS compatible. It includes a clock (CLK), data input (DATA), and load (LOAD) signal. The 12-bit command word comprises eight bits of data, three DAC select bits, and a range bit.
- What is the purpose of the LDAC pin?
The LDAC pin controls the update of the DAC outputs. When LDAC is high, no DAC output updates occur. The DAC outputs are updated only when LDAC is taken from high to low.
- Does the TLC5628 require external trimming?
No, the TLC5628 does not require external trimming.
- What are the reference voltage inputs used for?
The reference voltage inputs (REF1 and REF2) define the analog output range for the DACs. REF1 is used for DAC A through DAC D, and REF2 is used for DAC E through DAC H.
- What is the maximum supply current of the TLC5628?
The maximum supply current (IDD) of the TLC5628 is 4 mA.
- What is the typical output slew rate of the TLC5628?
The typical output slew rate of the TLC5628 is dependent on the load capacitance and can be found in the detailed specifications.
- Can the TLC5628 be used in high-noise environments?
- What are some common applications of the TLC5628?
The TLC5628 is commonly used in programmable voltage sources, digitally controlled amplifiers/attenuators, mobile communications, automatic test equipment, process monitoring and control, and signal synthesis).
