Overview
The AD7847ARZ-REEL, produced by Analog Devices Inc., is a complete, dual, 12-bit multiplying digital-to-analog converter (DAC) with integrated output amplifiers on a monolithic CMOS chip. This device is part of the AD7837/AD7847 family and is designed to provide high precision and reliability. It does not require external user trims to achieve full specified performance, making it a robust solution for various applications. The AD7847 is fabricated using Linear Compatible CMOS (LC2MOS), a mixed technology process that combines precision bipolar circuits with low-power CMOS logic.
Key Specifications
| Parameter | Value | Units | Test Conditions/Comments |
|---|---|---|---|
| Resolution | 12 | Bits | - |
| Relative Accuracy | ±1 | LSB max | - |
| Differential Nonlinearity | ±1 | LSB max | - |
| Zero Code Offset Error | ±2 | mV max @ +25°C | DAC Latch Loaded with All 0s |
| Gain Error | ±4 | mV max @ +25°C | - |
| Output Voltage Range | ±10 V | - | Across a 2 kΩ load |
| Package Type | 24-Lead SOIC (Wide) | - | - |
| VDD/VSS | ±15 V ± 5% | - | - |
Key Features
- Complete, dual 12-bit multiplying DAC with integrated output amplifiers.
- No external user trims required for full specified performance.
- Microprocessor compatible with high-speed data latches and interface logic.
- 12-bit parallel data loading with separate Chip Select inputs for each DAC.
- Internally compensated output amplifiers with low input offset voltage due to laser trimming.
- Fabricated in Linear Compatible CMOS (LC2MOS) process, combining precision bipolar circuits with low-power CMOS logic.
- Low leakage configuration ensuring low offset errors over the specified temperature range.
Applications
- Industrial control systems requiring precise analog output.
- Automotive systems needing reliable and accurate DACs.
- Medical devices that demand high precision and reliability.
- Aerospace and defense applications where robust and accurate DACs are crucial.
- Test and measurement equipment requiring high-precision analog outputs.
Q & A
- What is the resolution of the AD7847ARZ-REEL?
The AD7847ARZ-REEL has a resolution of 12 bits.
- What is the output voltage range of the AD7847ARZ-REEL?
The output voltage range is ±10 V across a 2 kΩ load.
- Does the AD7847ARZ-REEL require external user trims?
No, the AD7847ARZ-REEL does not require external user trims to achieve full specified performance.
- What is the package type of the AD7847ARZ-REEL?
The package type is a 24-Lead SOIC (Wide).
- Is the AD7847ARZ-REEL microprocessor compatible?
- How is the data loaded into the DAC latches?
Data is loaded into the DAC latches using the WR input and separate Chip Select inputs for each DAC.
- What is the fabrication process used for the AD7847ARZ-REEL?
The AD7847ARZ-REEL is fabricated using Linear Compatible CMOS (LC2MOS) process.
- What are some common applications of the AD7847ARZ-REEL?
Common applications include industrial control systems, automotive systems, medical devices, aerospace and defense, and test and measurement equipment.
- What is the temperature coefficient of the zero code offset error?
The temperature coefficient of the zero code offset error is ±5 µV/°C typical.
- Are the output amplifiers internally compensated?
