Overview
The AD7237AARZ-REEL7, produced by Analog Devices Inc., is an enhanced version of the industry-standard AD7237/AD7247 dual 12-bit digital-to-analog converters (DACs). This component is a complete, dual, 12-bit, voltage output DAC with output amplifiers and a Zener voltage reference integrated on a monolithic CMOS chip. It is designed to offer significant space savings and increased reliability compared to multichip designs. The AD7237AARZ-REEL7 is microprocessor compatible, featuring high-speed data latches and interface logic, making it suitable for a wide range of applications requiring precise analog output control.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Channels | 2 |
| Resolution | 12 bits |
| Output Voltage Range | 0 V to +5 V, 0 V to +10 V, ±5 V (with dual supplies) |
| Interface Type | Parallel (Byte for AD7237A, 12-bit parallel for AD7247A) |
| Operating Temperature Range | -40°C to 85°C |
| Power Supply Range | 12 V to 15 V (single supply), ±10.8 V to ±16.5 V (dual supply) |
| Settling Time | 8 µs |
| Package Type | 24-Lead SOIC (Wide) |
| RoHS Compliance | Yes |
| INL/DNL (LSB) | ±0.5 LSBs (INL), ±0.9 LSBs (DNL) |
Key Features
- Dual 12-bit DACPORT® on a single chip, offering space savings and increased reliability.
- Microprocessor compatible with high-speed data latches and interface logic.
- Double buffered interface structure for the AD7237A, allowing data to be loaded in two write operations.
- Asynchronous LDAC signal for updating DAC latches and analog outputs.
- REF OUT/REF IN function allowing use of either on-chip 5 V reference or an external reference.
- Faster interface times and better reference variations with VDD.
- No external user trims required to achieve full specified performance.
- Output amplifiers capable of developing +10 V across a 2 kΩ load to GND.
Applications
- Industrial control systems requiring precise analog output control.
- Automotive systems where reliable and fast DAC performance is critical.
- Medical devices that need high accuracy and stability in analog output.
- Aerospace and defense applications requiring robust and reliable DACs.
- Test and measurement equipment where precise analog signals are necessary.
Q & A
- What is the resolution of the AD7237AARZ-REEL7?
The AD7237AARZ-REEL7 has a resolution of 12 bits.
- What are the available output voltage ranges for the AD7237AARZ-REEL7?
The output voltage ranges are 0 V to +5 V, 0 V to +10 V, and ±5 V (with dual supplies).
- How many channels does the AD7237AARZ-REEL7 have?
The AD7237AARZ-REEL7 has two channels.
- What is the operating temperature range of the AD7237AARZ-REEL7?
The operating temperature range is -40°C to 85°C.
- Is the AD7237AARZ-REEL7 RoHS compliant?
Yes, the AD7237AARZ-REEL7 is RoHS compliant.
- What is the settling time of the AD7237AARZ-REEL7?
The settling time is 8 µs.
- How is data loaded into the AD7237A?
Data is loaded into the AD7237A through a double buffered interface structure in two write operations.
- Can the AD7237AARZ-REEL7 use an external reference voltage?
Yes, the AD7237AARZ-REEL7 can use either the on-chip 5 V reference or an external reference voltage.
- What is the package type of the AD7237AARZ-REEL7?
The package type is 24-Lead SOIC (Wide).
- Does the AD7237AARZ-REEL7 require external user trims for full performance?
No, the AD7237AARZ-REEL7 does not require external user trims to achieve full specified performance.
