Overview
The TLC7528IDW, produced by Texas Instruments, is a dual 8-bit multiplying digital-to-analog converter (DAC) designed for a variety of microprocessor-controlled applications. This device features two identical 8-bit DACs, each with on-chip data latches, making it suitable for precise analog output control. The TLC7528IDW operates over a wide power supply range from 5V to 15V and is characterized for operation from −25°C to +85°C, making it versatile for different environmental conditions.
Key Specifications
| Specification | 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 Free-Air Temperature Range | −25°C to +85°C | |
| Supply Current (Quiescent) | 2 mA | |
| Supply Current (Standby) | 0.5 mA | |
| Input Capacitance | 10 pF | |
| Output Capacitance | 50 pF to 120 pF |
Key Features
- Easily interfaced to microprocessors through a common 8-bit input port.
- On-chip data latches for each DAC, allowing for independent control of each DAC.
- Monotonic over the entire A/D conversion range.
- Interchangeable with Analog Devices AD7528 and PMI PM-7528.
- Fast control signaling suitable for Digital Signal Processor (DSP) applications, including interface with TMS320.
- Voltage-mode operation producing a voltage output rather than a current output.
- CMOS technology for low power consumption.
- TTL-compatible digital inputs when operated at 5V supply voltage.
Applications
- Microprocessor-controlled gain-setting and signal-control applications.
- Digital Signal Processing (DSP) applications.
- Programmable window detectors and comparators.
- Digitally controlled telephone attenuators.
- Programmable state-variable or universal filters for low-pass, high-pass, and bandpass outputs.
Q & A
- What is the resolution of the TLC7528IDW?
The resolution of the TLC7528IDW is 8 bits.
- What is the operating temperature range for the TLC7528IDW?
The operating temperature range for the TLC7528IDW is −25°C to +85°C.
- How does the TLC7528IDW interface with microprocessors?
The TLC7528IDW interfaces with microprocessors through a common 8-bit input port using CS, WR, and DACA/DACB control signals.
- What is the power dissipation of the TLC7528IDW at VDD = 5V?
The power dissipation of the TLC7528IDW at VDD = 5V is 20 mW.
- Is the TLC7528IDW compatible with other DAC models?
Yes, the TLC7528IDW is interchangeable with Analog Devices AD7528 and PMI PM-7528.
- What are some common applications of the TLC7528IDW?
Common applications include microprocessor-controlled gain-setting, DSP applications, programmable window detectors, and digitally controlled filters.
- What is the settling time of the TLC7528IDW at VDD = 5V?
The settling time of the TLC7528IDW at VDD = 5V is 100 ns.
- Does the TLC7528IDW support voltage-mode operation?
Yes, the TLC7528IDW supports voltage-mode operation, producing a voltage output rather than a current output.
- What is the typical supply current of the TLC7528IDW in quiescent mode?
The typical supply current of the TLC7528IDW in quiescent mode is 2 mA.
- What is the output capacitance range of the TLC7528IDW?
The output capacitance range of the TLC7528IDW is 50 pF to 120 pF.
