Overview
The AD7840KP-REEL, produced by Analog Devices Inc., is a complete 14-bit voltage output Digital-to-Analog Converter (DAC). This component integrates a 14-bit DAC, a 3 V buried Zener reference, a DAC output amplifier, and high-speed control logic. It is designed to provide high accuracy and dynamic performance, making it suitable for a variety of applications requiring precise analog signal generation.
Key Specifications
| Parameter | Value | Notes |
|---|---|---|
| Resolution | 14 bits | |
| Analog Output Range | ±3 V | |
| Reference Voltage | 3 V buried Zener | |
| Interface Modes | Parallel and Serial | |
| Parallel Data Setup Time | 21 ns | |
| Serial Data Clock Rate | Up to 6 MHz | |
| Power Supply Voltage | +5 V ±5% | |
| Current Consumption (IDD) | Typically 10 mA, Max 14 mA | Output Unloaded, SCLK = +5 V |
| Power Dissipation | Typically 70 mW, Max 110 mW | |
| Operating Temperature Range | J, K Versions: 0°C to +70°C; A, B Versions: –25°C to +85°C; S Version: –55°C to +125°C | |
| Package Type | 28-terminal PLCC (Plastic Leaded Chip Carrier) |
Key Features
- Complete 14-Bit D/A Function: Includes an on-chip reference, an output buffer amplifier, and a 14-bit D/A converter for creating AC signals and DC voltages with high accuracy.
- Dynamic Specifications: Fully specified for dynamic performance parameters such as signal-to-noise ratio and harmonic distortion, making it suitable for DSP applications.
- Fast and Versatile Interface: Supports both parallel and serial interfacing, with fast data setup times and high data transfer rates.
- Low Power Consumption: Operates with low power consumption, typically 10 mA, making it energy-efficient.
- Advanced Packaging: Available in a 28-terminal PLCC package, offering a compact and reliable solution.
Applications
- Digital Signal Processing (DSP): Ideal for applications requiring high dynamic performance and precision, such as audio processing and medical imaging.
- Industrial Control Systems: Suitable for generating precise analog signals in industrial control and automation systems.
- Medical Devices: Used in medical devices that require accurate and reliable analog signal generation.
- Aerospace and Defense: Applicable in aerospace and defense systems where high precision and reliability are critical.
Q & A
- What is the resolution of the AD7840KP-REEL DAC?
The AD7840KP-REEL has a resolution of 14 bits.
- What is the analog output range of the AD7840KP-REEL?
The analog output range is ±3 V.
- What types of interfaces does the AD7840KP-REEL support?
The AD7840KP-REEL supports both parallel and serial interfaces.
- What is the maximum serial data clock rate for the AD7840KP-REEL?
The maximum serial data clock rate is up to 6 MHz.
- What is the typical power consumption of the AD7840KP-REEL?
The typical power consumption is 10 mA.
- What are the operating temperature ranges for the AD7840KP-REEL?
The operating temperature ranges are: J, K Versions: 0°C to +70°C; A, B Versions: –25°C to +85°C; S Version: –55°C to +125°C.
- In what package type is the AD7840KP-REEL available?
The AD7840KP-REEL is available in a 28-terminal PLCC package.
- What are some common applications of the AD7840KP-REEL?
Common applications include DSP, industrial control systems, medical devices, and aerospace and defense systems.
- Does the AD7840KP-REEL have an on-chip reference voltage?
Yes, the AD7840KP-REEL includes a 3 V buried Zener reference voltage.
- What is the significance of the fast data setup time in the AD7840KP-REEL?
The fast data setup time of 21 ns allows for direct parallel interfacing to digital signal processors and high-speed microprocessors.
