Overview
The AD7847AN is a dual 12-bit digital-to-analog converter (DAC) manufactured by Analog Devices Inc. This component is designed for high-performance applications requiring precise analog output control. The AD7847AN features a 12-bit resolution, making it suitable for a wide range of industrial, medical, and scientific instruments. It operates in a bipolar mode, allowing for four-quadrant multiplication, and is fabricated using the Linear Compatible CMOS (LC2MOS) process, combining precision bipolar circuits with low-power CMOS logic.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Bits | 12 | |
| Number of D/A Converters | 2 | |
| Settling Time | 5µs | |
| Output Type | Voltage - Buffered | |
| Differential Output | No | |
| Data Interface | Parallel | |
| Reference Type | External | |
| Voltage - Supply, Analog | ±14.25 V ~ 15.75 V | |
| INL/DNL (LSB) | ±1 (Max), ±1 (Max) | |
| Architecture | R-2R | |
| Operating Temperature | -40°C ~ 85°C | |
| Package | 24-DIP (0.300", 7.62mm) |
Key Features
- Dual 12-bit DACs: The AD7847AN contains two independent 12-bit DACs, each with its own control logic and latch, allowing for simultaneous or independent operation.
- Parallel Data Interface: The component uses a parallel data interface, enabling direct connection to microprocessors and other digital systems.
- Bipolar Operation: Supports four-quadrant multiplication with bipolar output, making it suitable for applications requiring both positive and negative voltage outputs.
- Low Settling Time: A settling time of 5µs ensures fast conversion and high throughput.
- External Reference: Allows for an external reference voltage, providing flexibility in system design and ensuring high accuracy.
- Wide Operating Temperature Range: Operates from -40°C to 85°C, making it suitable for a variety of environmental conditions.
Applications
- Industrial Control Systems: Ideal for applications requiring precise analog output control, such as process control and automation.
- Medical Instruments: Suitable for medical devices that need high-precision analog outputs, such as patient monitoring systems and diagnostic equipment.
- Scientific Instruments: Used in various scientific instruments that require accurate and stable analog outputs, such as data acquisition systems and laboratory equipment.
- Aerospace and Defense: Applicable in aerospace and defense systems where high reliability and precision are critical.
Q & A
- What is the resolution of the AD7847AN DAC?
The AD7847AN has a 12-bit resolution.
- How many DACs are included in the AD7847AN?
The AD7847AN contains two independent DACs.
- What is the settling time of the AD7847AN?
The settling time is 5µs.
- What type of data interface does the AD7847AN use?
The AD7847AN uses a parallel data interface.
- Can the AD7847AN operate in bipolar mode?
- What is the operating temperature range of the AD7847AN?
The operating temperature range is -40°C to 85°C.
- What type of package is the AD7847AN available in?
The AD7847AN is available in a 24-DIP (0.300", 7.62mm) package.
- What is the architecture of the AD7847AN DACs?
The DACs use an R-2R architecture.
- Can the AD7847AN be used in industrial control systems?
- Does the AD7847AN require an external reference voltage?
