Overview
The AD7248AAPZ-REEL, produced by Analog Devices Inc., is an enhanced version of the industry-standard AD7248. This component is a 12-bit, voltage output, digital-to-analog converter (DAC) that features an on-chip output amplifier and a Zener voltage reference on a monolithic CMOS chip. It is designed to operate with high speed and precision, making it suitable for a variety of applications requiring accurate analog output from digital data.
Key Specifications
| Parameter | Value | Unit | Conditions |
|---|---|---|---|
| Resolution | 12 bits | ||
| Data Bus Width | 8 bits | Loaded in two write operations | |
| Supply Voltage (VDD) | +12 V to +15 V | V | |
| Supply Voltage (VSS) | –12 V to –15 V | V | |
| Analog Ground (AGND) | 0 V | V | |
| Output Voltage Range (Single Supply) | 0 V to +5 V, 0 V to +10 V | V | |
| Output Voltage Range (Dual Supply) | ±5 V | V | |
| Load Resistance (RL) | 2 kΩ | Ω | |
| Load Capacitance (CL) | 100 pF | pF | |
| Chip Select Pulsewidth (t1) | 55 ns (typ), 80 ns (min) | ns | TMIN to TMAX |
| Write Pulsewidth (t2) | 40 ns (typ), 80 ns (min) | ns | TMIN to TMAX |
| Chip Select to Write Setup Time (t3) | 0 ns (min) | ns | TMIN to TMAX |
| Chip Select to Write Hold Time (t4) | 0 ns (min) | ns | TMIN to TMAX |
| Data Valid to Write Setup Time (t5) | 40 ns (typ) | ns |
Key Features
- High-speed data latches and double-buffered interface logic for microprocessor compatibility.
- On-chip 5 V buried Zener diode providing a low noise, temperature-compensated reference for the DAC.
- No external user trims required to achieve full specified performance.
- Extended temperature range operation for commercial and industrial grades.
- Asynchronous LDAC signal for transferring data from the input latch to the DAC latch.
- CLR signal on the DAC latch for features like power-on reset.
- Output amplifiers capable of developing +10 V across a 2 kΩ load to GND.
- Fabricated in linear compatible CMOS (LC MOS) technology combining precision bipolar circuits with low power CMOS logic.
Applications
The AD7248AAPZ-REEL is suitable for various applications requiring precise digital-to-analog conversion, such as:
- Industrial control systems.
- Aerospace and defense systems.
- Medical devices.
- Automotive systems.
- Test and measurement equipment.
Q & A
- What is the resolution of the AD7248AAPZ-REEL?
The AD7248AAPZ-REEL has a resolution of 12 bits. - How is data loaded into the AD7248AAPZ-REEL?
Data is loaded into the AD7248AAPZ-REEL through an 8-bit-wide data bus in two write operations. - What are the supply voltage ranges for the AD7248AAPZ-REEL?
The supply voltage ranges are +12 V to +15 V for VDD and –12 V to –15 V for VSS. - What are the output voltage ranges for the AD7248AAPZ-REEL?
The output voltage ranges are 0 V to +5 V, 0 V to +10 V for single supply, and ±5 V for dual supply. - Does the AD7248AAPZ-REEL require external user trims?
No, the AD7248AAPZ-REEL does not require external user trims to achieve full specified performance. - What is the purpose of the LDAC signal in the AD7248AAPZ-REEL?
The LDAC signal is an asynchronous input that transfers data from the input latch to the DAC latch and updates the analog output. - What is the significance of the CLR signal in the AD7248AAPZ-REEL?
The CLR signal allows features such as power-on reset to be implemented. - In what package types is the AD7248AAPZ-REEL available?
The AD7248AAPZ-REEL is available in 20-lead PDIP, SOIC (Wide), and Flatpack packages. - What is the fabrication technology used for the AD7248AAPZ-REEL?
The AD7248AAPZ-REEL is fabricated in linear compatible CMOS (LC MOS) technology. - What are some typical applications of the AD7248AAPZ-REEL?
Typical applications include industrial control systems, aerospace and defense systems, medical devices, automotive systems, and test and measurement equipment.
