Overview
The AD7847ARZ is a high-performance, dual 12-bit digital-to-analog converter (DAC) manufactured by Analog Devices Inc. This component is part of the AD7837/AD7847 series and is known for its exceptional accuracy, low noise, and wide operating temperature range. The AD7847ARZ is fabricated using Linear Compatible CMOS (LC²MOS) technology, which combines precision bipolar circuits with low-power CMOS logic, ensuring high reliability and quality.
Key Specifications
| Parameter | Value | Units | Comments |
|---|---|---|---|
| Resolution | 12 | Bits | |
| Number of D/A Converters | 2 | ||
| Settling Time | 5 μs | ||
| Output Type | Voltage – Buffered | ||
| Differential Output | No | ||
| Data Interface | Parallel | ||
| Reference Type | External | ||
| Voltage-Supply Analog | ±14.25V ~ 15.75V | V | |
| INL/DNL (LSB) | ±1 (Max), ±1 (Max) | LSB | |
| Architecture | R-2R | ||
| Operating Temperature | -40°C ~ 85°C | °C | |
| Package/Case | 24-SOIC (0.295, 7.50mm Width) |
Key Features
- High Accuracy and Precision: The AD7847ARZ offers exceptional accuracy with a relative accuracy of ±1 LSB and differential nonlinearity of ±1 LSB, ensuring reliable and precise analog signal generation.
- Dual 12-Bit DACs: The component features two independent 12-bit DACs, each with its own chip select input and a common write input, allowing for flexible data loading and control.
- Parallel Data Interface: The DAC accepts 12-bit parallel data, making it compatible with microprocessors and facilitating high-speed data transfer.
- Output Amplifiers: The integrated output amplifiers are capable of developing ±10 V across a 2 kΩ load and are internally compensated with low input offset voltage due to laser trimming at the wafer level.
- Wide Operating Temperature Range: The component operates over a temperature range of -40°C to 85°C, making it suitable for a variety of environmental conditions.
- Low Noise and Low Offset Errors: The AD7847ARZ features a novel low leakage configuration that ensures low offset errors over the specified temperature range, contributing to its high performance and reliability.
Applications
- Industrial Automation: The AD7847ARZ is used in automated control systems to generate precise analog signals for controlling actuators, motor drives, and process variables, enhancing operational efficiency and reliability.
- Telecommunications: In telecommunications infrastructure, it facilitates the generation of accurate analog waveforms for signal conditioning, modulation, and filtering, ensuring optimal transmission performance.
- Medical Devices: The component is utilized in medical instrumentation for the precise control of sensors, actuators, and feedback loops in devices such as patient monitors, diagnostic equipment, and therapeutic systems.
- Test and Measurement: It serves as a reliable source for generating calibrated analog signals in signal generators, data acquisition systems, and calibration instruments, enabling accurate measurement and analysis.
Q & A
- What is the resolution of the AD7847ARZ?
The AD7847ARZ has a resolution of 12 bits.
- How many D/A converters does the AD7847ARZ have?
The AD7847ARZ features two independent D/A converters.
- What is the settling time of the AD7847ARZ?
The settling time of the AD7847ARZ is 5 μs.
- What type of data interface does the AD7847ARZ use?
The AD7847ARZ uses a parallel data interface.
- What is the operating temperature range of the AD7847ARZ?
The operating temperature range of the AD7847ARZ is -40°C to 85°C.
- What is the package type of the AD7847ARZ?
The AD7847ARZ is packaged in a 24-SOIC (0.295, 7.50mm Width).
- What are the typical applications of the AD7847ARZ?
The AD7847ARZ is typically used in industrial automation, telecommunications, medical devices, and test and measurement equipment.
- Does the AD7847ARZ require external user trims for full specified performance?
No, the AD7847ARZ does not require external user trims to achieve full specified performance.
- What is the output voltage range of the integrated output amplifiers?
The integrated output amplifiers can develop ±10 V across a 2 kΩ load.
- What technology is used to fabricate the AD7847ARZ?
The AD7847ARZ is fabricated using Linear Compatible CMOS (LC²MOS) technology.
