Overview
The TLC7528CPWR, produced by Texas Instruments, is a dual 8-bit digital-to-analog converter (DAC) designed for a variety of microprocessor-controlled applications. This device features separate on-chip data latches and is known for its exceptionally close DAC-to-DAC matching. It operates in voltage mode, producing a voltage output rather than a current output, and is compatible with a wide range of microprocessor buses and output ports.
The TLC7528CPWR is part of the TLC7528 family, which includes different temperature grades such as TLC7528C, TLC7528E, and TLC7528I, each characterized for operation over different temperature ranges. This makes the device versatile for various environmental conditions.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 8 bits | |
| Linearity Error | 1/2 LSB | |
| Power Dissipation at VDD = 5V | 20 mW | |
| Settling Time at VDD = 5V | 100 ns | |
| Propagation Delay Time at VDD = 5V | 80 ns | |
| Operating Voltage Range | 4.75V to 15.5V | V |
| Operating Free-Air Temperature Range | TLC7528C: 0°C to +70°C, TLC7528E: -40°C to +85°C, TLC7528I: -25°C to +85°C | °C |
| Supply Current (Quiescent) | 2 mA | |
| Supply Current (Standby) | 0.5 mA | |
| Input Capacitance (DB0-DB7) | 10 pF | |
| Output Capacitance (OUTA, OUTB) | 50 pF to 120 pF |
Key Features
- Easily interfaced to microprocessors and digital signal processors (DSPs) like the TMS320.
- On-chip data latches for each DAC, allowing for independent control of each converter.
- Monotonic over the entire A/D conversion range, ensuring reliable and accurate conversions.
- Interchangeable with Analog Devices AD7528 and PMI PM-7528.
- Voltage-mode operation, producing a voltage output.
- CMOS technology for low power consumption.
- Segmenting of high-order bits to minimize glitches during significant bit changes.
- 2- or 4-quadrant multiplying capability, suitable for gain-setting and signal-control applications.
Applications
- Microprocessor-controlled gain-setting and signal-control applications.
- Digital signal processing (DSP) applications, including interface with TMS320 DSPs.
- Programmable window detectors and upper- and lower-limit testers.
- Digitally-controlled signal attenuators, such as in stereo audio and telephone signal level control.
- Digitally-controlled state-variable filters for various filtering applications.
Q & A
- What is the resolution of the TLC7528CPWR?
The TLC7528CPWR has a resolution of 8 bits.
- What is the typical power dissipation of the TLC7528CPWR at VDD = 5V?
The typical power dissipation is 20 mW at VDD = 5V.
- What is the settling time of the TLC7528CPWR at VDD = 5V?
The settling time is 100 ns at VDD = 5V.
- What is the operating voltage range of the TLC7528CPWR?
The operating voltage range is from 4.75V to 15.5V.
- What are the temperature ranges for different versions of the TLC7528?
TLC7528C: 0°C to +70°C, TLC7528E: -40°C to +85°C, TLC7528I: -25°C to +85°C.
- How does the TLC7528CPWR interface with microprocessors?
The TLC7528CPWR interfaces through a common 8-bit input port and control signals (CS, WR, DACA/DACB), allowing easy integration with most microprocessor buses and output ports.
- What are some common applications of the TLC7528CPWR?
Common applications include microprocessor-controlled gain-setting, signal-control, DSP applications, programmable window detectors, and digitally-controlled state-variable filters.
- Is the TLC7528CPWR interchangeable with other DACs?
Yes, it is interchangeable with Analog Devices AD7528 and PMI PM-7528.
- What is the typical supply current in quiescent mode?
The typical supply current in quiescent mode is 2 mA.
- What is the output capacitance range of the TLC7528CPWR?
The output capacitance ranges from 50 pF to 120 pF.
