Overview
The AD7837AR is a dual 12-bit digital-to-analog converter (DAC) produced by Analog Devices Inc. This component is part of the LC2MOS family and is designed for high-performance applications requiring precise analog output. The AD7837AR features two independent DACs, each with its own input and output stages, allowing for flexible and simultaneous control of multiple analog signals.
Key Specifications
| Specification | Value |
|---|---|
| Number of Bits | 12 |
| 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 | ±14.25 V ~ 15.75 V |
| Operating Temperature | -40°C ~ 85°C |
| INL/DNL (LSB) | ±1 (Max), ±1 (Max) |
| Architecture | R-2R |
| Package | 24-SOIC (0.295", 7.50mm Width) |
Key Features
- Dual 12-bit DACs with independent input and output stages.
- Parallel data interface for easy integration with microprocessors.
- External reference input for precise voltage control.
- Buffered voltage output with a settling time of 5 µs.
- R-2R architecture for high linearity and accuracy.
- Asynchronous LDAC input for simultaneous updating of both DACs.
- Compatible with a wide range of analog supply voltages (±14.25 V ~ 15.75 V).
Applications
The AD7837AR is suitable for various high-performance applications, including:
- Industrial control systems requiring precise analog output control.
- Aerospace and defense systems where reliability and accuracy are critical.
- Medical devices that demand high precision and stability in analog signals.
- Automotive systems, particularly those involving advanced driver-assistance systems (ADAS).
- Test and measurement equipment where accurate and stable analog outputs are necessary.
Q & A
- What is the resolution of the AD7837AR DACs?
The AD7837AR features dual 12-bit DACs. - What is the settling time of the AD7837AR?
The settling time is 5 µs. - What type of data interface does the AD7837AR use?
The AD7837AR uses a parallel data interface. - Can the AD7837AR be used with external reference voltages?
Yes, the AD7837AR supports external reference inputs. - What is the operating temperature range of the AD7837AR?
The operating temperature range is -40°C to 85°C. - What is the architecture of the AD7837AR DACs?
The DACs use an R-2R architecture. - How many analog outputs does the AD7837AR have?
The AD7837AR has two independent analog outputs. - Is the LDAC input synchronous or asynchronous?
The LDAC input is asynchronous and independent of the WR input. - What is the package type of the AD7837AR?
The AD7837AR is available in a 24-SOIC package. - What are some typical applications of the AD7837AR?
Typical applications include industrial control systems, aerospace and defense systems, medical devices, automotive systems, and test and measurement equipment.
