Overview
The TLC7528CFNR, produced by Texas Instruments, is a dual 8-bit multiplying digital-to-analog converter (DAC) designed for various microprocessor-controlled applications. This device features separate on-chip data latches for each DAC, ensuring exceptionally close DAC-to-DAC matching. It is easily interfaced to microprocessors and is compatible with popular microprocessor buses and output ports. The TLC7528CFNR operates in voltage mode, producing a voltage output, and is suitable for applications requiring fast control signaling, particularly in digital signal processor (DSP) environments, including interfaces with the TMS320 series.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 8 bits |
| Linearity Error | 1/2 LSB |
| Power Dissipation at VDD = 5V | 20 mW (typical) |
| Settling Time at VDD = 5V | 100 ns |
| Propagation Delay Time at VDD = 5V | 80 ns |
| Operating Voltage Range | 5V to 15V |
| Operating Temperature Range | TLC7528C: 0°C to 70°C, TLC7528I: -25°C to 85°C, TLC7528E: -40°C to 85°C |
| Storage Temperature Range | -65°C to 150°C |
Key Features
- Easily interfaced to microprocessors with on-chip data latches.
- Monotonic over the entire A/D conversion range.
- Interchangeable with Analog Devices AD7528 and PMI PM-7528.
- Fast control signaling for DSP applications, including interface with TMS320.
- Voltage-mode operation.
- CMOS technology.
- Segmenting of high-order bits to minimize glitches.
- 2- or 4-quadrant multiplying capability.
Applications
The TLC7528CFNR is suitable for a variety of applications, including microprocessor-controlled gain-setting and signal-control, digital signal processing, and programmable attenuators. Specific use cases include:
- DSP applications, particularly with the TMS320 series.
- Programmable window detectors and upper- and lower-limit testers.
- Digitally-controlled signal attenuators, such as in stereo audio and telephone signal level control.
Q & A
- What is the resolution of the TLC7528CFNR? The resolution is 8 bits.
- What is the typical power dissipation of the TLC7528CFNR at 5V? The typical power dissipation is 20 mW.
- What is the operating voltage range of the TLC7528CFNR? The operating voltage range is from 5V to 15V.
- How does the TLC7528CFNR interface with microprocessors? It interfaces through a common 8-bit input port, with control inputs similar to the write cycle of a random-access memory.
- Is the TLC7528CFNR compatible with other DAC models? Yes, it is interchangeable with Analog Devices AD7528 and PMI PM-7528.
- What are the key features of the TLC7528CFNR? Key features include easy microprocessor interface, on-chip data latches, monotonic operation, fast control signaling for DSP, and voltage-mode operation.
- What are some typical applications of the TLC7528CFNR? Applications include DSP, programmable window detectors, and digitally-controlled signal attenuators.
- What is the temperature range for the TLC7528C, TLC7528I, and TLC7528E? The TLC7528C operates from 0°C to 70°C, the TLC7528I from -25°C to 85°C, and the TLC7528E from -40°C to 85°C.
- Does the TLC7528CFNR support 2- or 4-quadrant multiplying? Yes, it supports both 2- and 4-quadrant multiplying.
- How does the TLC7528CFNR minimize glitches during bit changes? It minimizes glitches by segmenting the high-order bits.
