Overview
The AD7245ABRZ is a 12-bit digital-to-analog converter (DAC) produced by Analog Devices Inc. This component is a complete, voltage output DAC with an integrated output amplifier and Zener voltage reference on a monolithic CMOS chip. It is designed to be microprocessor compatible, featuring high-speed data latches and double-buffered interface logic. The AD7245ABRZ is fabricated using linear compatible CMOS (LC2MOS), a mixed technology process that combines precision bipolar circuits with low-power CMOS logic. This single-chip design offers significant space savings and increased reliability compared to multichip designs, making it ideal for various industrial and instrumentation applications.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 12 |
| Architecture | R-2R |
| Data Interface | Parallel |
| Reference Type | Internal |
| Voltage Supply (Analog) | ±10.8V to ±16.5V |
| Voltage Supply (Digital) | 10.8V to 16.5V |
| Settling Time | 7µs |
| Output Type | Voltage - Buffered |
| Differential Output | No |
| INL/DNL (LSB) | ±0.75 (Max), ±1 (Max) |
| Operating Temperature | -40°C to +85°C |
| Package Style | 24-lead wide SOIC |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Key Features
- Microprocessor compatible with high-speed data latches and double-buffered interface logic.
- No external user trims required to achieve full specified performance.
- Single or dual supply operation.
- Low power consumption: 65mW typical in single supply.
- Fast interface with 30ns typical data setup time.
- Full-scale temperature coefficient of ±30ppm of FSR/°C max at (VDD = 15V).
- Relative accuracy of ±1/2LSB.
- Integrated output amplifier and Zener voltage reference.
Applications
The AD7245ABRZ is designed for industrial and instrumentation applications where reliability and accuracy are crucial. It is commonly used in:
- Process control systems to control analog actuators and sensors with high precision.
- Test and measurement equipment for accurate signal generation and conditioning.
- Medical instrumentation, such as medical imaging equipment, to ensure reliable diagnostics.
Q & A
- What is the resolution of the AD7245ABRZ?
The AD7245ABRZ is a 12-bit digital-to-analog converter.
- What is the operating voltage range of the AD7245ABRZ?
The operating voltage range is from ±10.8V to ±16.5V.
- What is the settling time of the AD7245ABRZ?
The settling time is 7µs.
- Does the AD7245ABRZ require external user trims?
No, external user trims are not required to achieve full specified performance.
- What is the package style of the AD7245ABRZ?
The package style is a 24-lead wide SOIC.
- What is the operating temperature range of the AD7245ABRZ?
The operating temperature range is from -40°C to +85°C.
- Is the AD7245ABRZ microprocessor compatible?
Yes, it is microprocessor compatible with high-speed data latches and double-buffered interface logic.
- What is the typical power consumption of the AD7245ABRZ in single supply operation?
The typical power consumption is 65mW.
- Does the AD7245ABRZ support single or dual supply operation?
Yes, it supports both single and dual supply operation.
- What is the full-scale temperature coefficient of the AD7245ABRZ?
The full-scale temperature coefficient is ±30ppm of FSR/°C max at (VDD = 15V).
