Overview
The AD7237AAR-REEL7, produced by Analog Devices Inc., is an enhanced version of the industry-standard AD7237/AD7247 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 AD7237AAR-REEL7 is compatible with most modern microprocessors, featuring improved interface times and a wide power supply range from 12 V to 15 V.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 12-bit |
| Conversion Rate | 125 ksps |
| Output Range (Single Supply) | 0 V to +5 V, 0 V to +10 V |
| Output Range (Dual Supply) | ±5 V, in addition to single supply ranges |
| Integral Nonlinearity (INL) | 1 LSB |
| Package Type | 24-SOIC Surface Mount |
| Number of Pins | 24 |
| Power Supply Range | 12 V to 15 V |
| Differential Output | No |
| Contact Plating | Lead, Tin |
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 with an 8-bit wide data bus for the AD7237A, and parallel data input for the AD7247A.
- Faster settling times and improved reference variations with VDD.
- No external user trims required to achieve full specified performance.
- REF OUT/REF IN function allowing the use of either the on-chip 5 V reference or an external reference.
- Asynchronous LDAC signal for updating DAC latches and analog outputs.
Applications
The AD7237AAR-REEL7 is suitable for a variety of 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 AD7237AAR-REEL7? The resolution is 12-bit.
- What is the conversion rate of the AD7237AAR-REEL7? The conversion rate is 125 ksps.
- What are the output ranges for single and dual supply operations? For single supply, the output ranges are 0 V to +5 V and 0 V to +10 V. For dual supply, an additional ±5 V range is available.
- Is the AD7237AAR-REEL7 microprocessor compatible? Yes, it is compatible with most modern microprocessors.
- What is the package type of the AD7237AAR-REEL7? The package type is 24-SOIC Surface Mount.
- Does the AD7237AAR-REEL7 require external user trims? No, external user trims are not required to achieve full specified performance.
- What is the power supply range for the AD7237AAR-REEL7? The power supply range is from 12 V to 15 V.
- How does the LDAC signal function in the AD7237AAR-REEL7? The LDAC signal is asynchronous and controls the transfer of 12-bit data from the input latches to the DAC latches, updating both analog outputs simultaneously.
- What types of applications is the AD7237AAR-REEL7 suitable for? It is suitable for industrial control systems, aerospace and defense systems, medical devices, automotive systems, and test and measurement equipment.
- What is the Integral Nonlinearity (INL) of the AD7237AAR-REEL7? The INL is 1 LSB.
