Overview
The TLC7528IDWR, produced by Texas Instruments, is a dual 8-bit multiplying digital-to-analog converter (DAC) designed for high-performance 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 various digital signal processor (DSP) applications, including those involving the TMS320 series. The TLC7528IDWR operates in voltage mode, producing a voltage output, and is suitable for microprocessor-controlled gain-setting and signal-control applications.
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 | 5V to 15V | |
| Operating Temperature Range | -40°C to +85°C (TLC7528E), -25°C to +85°C (TLC7528I), 0°C to +70°C (TLC7528C) | °C |
| Storage Temperature Range | -65°C to +150°C | °C |
| Input Resistance Match (REFA to REFB) | ±1% | |
| DC Supply Sensitivity (∆gain/∆VDD) | 0.04%/V | |
| Supply Current (Quiescent) | 2 mA | |
| Supply Current (Standby) | 0.5 mA |
Key Features
- Easily interfaced to microprocessors with a common 8-bit input port and control signals similar to the write cycle of a random-access memory.
- On-chip data latches for each DAC, ensuring close DAC-to-DAC matching.
- 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, producing a voltage output rather than a current output.
- CMOS technology for low power consumption.
- Segmenting of high-order bits to minimize glitches during changes in the most significant bits.
- 2- or 4-quadrant multiplying capability for various gain-setting and signal-control applications.
Applications
- Microprocessor-controlled gain-setting and signal-control applications.
- Digital signal processor (DSP) applications, including those involving the TMS320 series.
- Programmable window detectors and comparators.
- Automated test equipment and measurement systems.
- Industrial control systems requiring precise analog output control.
Q & A
- What is the resolution of the TLC7528IDWR?
The TLC7528IDWR has a resolution of 8 bits.
- What is the operating voltage range of the TLC7528IDWR?
The operating voltage range is from 5V to 15V.
- What is the settling time of the TLC7528IDWR at VDD = 5V?
The settling time is 100 ns at VDD = 5V.
- Is the TLC7528IDWR compatible with other DAC models?
Yes, it is interchangeable with Analog Devices AD7528 and PMI PM-7528.
- What is the operating temperature range for the TLC7528E?
The operating temperature range for the TLC7528E is -40°C to +85°C.
- How does the TLC7528IDWR minimize glitches during digital input changes?
The device segments the high-order bits to minimize glitches during changes in the most significant bits.
- What type of technology is used in the TLC7528IDWR?
The TLC7528IDWR uses CMOS technology.
- Can the TLC7528IDWR be used in DSP applications?
Yes, it is designed for fast control signaling in DSP applications, including interface with TMS320.
- What is the typical power dissipation of the TLC7528IDWR at VDD = 5V?
The typical power dissipation is less than 20 mW at VDD = 5V.
- How does the TLC7528IDWR interface with microprocessors?
The device interfaces through a common 8-bit input port and control signals similar to the write cycle of a random-access memory.
