Overview
The AD7840KP, manufactured by Analog Devices Inc., is a fast and complete 14-bit voltage output Digital-to-Analog Converter (DAC). This component is designed to provide high accuracy and versatility in various digital signal processing applications. It features an on-chip reference, an output buffer amplifier, and a 14-bit DAC, making it suitable for creating both AC signals and DC voltages. The AD7840KP operates with low power consumption, typically 70 mW, and is compatible with high-speed DSP processors and microprocessors.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 14 |
| Number of D/A Converters | 1 |
| Settling Time | 4 µs |
| Output Type | Voltage - Buffered |
| Differential Output | No |
| Data Interface | Parallel, Serial |
| Reference Type | External, Internal |
| Voltage - Supply, Analog | ±5 V |
| INL/DNL (LSB) | ±1 (Max), ±0.9 (Max) |
| Architecture | R-2R |
| Operating Temperature | 0°C ~ 70°C |
| Package / Case | 28-LCC (J-Lead), 28-PLCC |
| Mounting Type | Surface Mount |
Key Features
- Complete 14-bit voltage output DAC with on-chip reference and output buffer amplifier.
- Parallel and serial interface capability, allowing for high-speed data transfer rates up to 6 MHz in serial mode.
- Low power consumption of 70 mW typical.
- Fast data setup time of 21 ns and write pulse width of 45 ns, making it compatible with modern 16-bit microprocessors and DSP processors.
- Dynamic performance specifications including signal-to-noise ratio and harmonic distortion.
- Operates from ±5 V supplies.
- Available in 24-pin plastic and hermetic dual-in-line package (DIP) and 28-terminal plastic leaded chip carrier (PLCC).
Applications
The AD7840KP is suitable for a variety of applications, including:
- Digital signal processing systems requiring high accuracy and speed.
- Audio and video signal generation.
- Industrial control systems.
- Medical equipment.
- Automotive systems.
Q & A
- What is the resolution of the AD7840KP DAC?
The AD7840KP has a resolution of 14 bits. - What are the available interface modes for the AD7840KP?
The AD7840KP supports both parallel and serial interface modes. - What is the typical power consumption of the AD7840KP?
The typical power consumption is 70 mW. - What is the settling time of the AD7840KP?
The settling time is 4 µs. - What are the supply voltage requirements for the AD7840KP?
The AD7840KP operates from ±5 V supplies. - What is the maximum serial data clock rate for the AD7840KP?
The maximum serial data clock rate is 6 MHz. - What is the output type of the AD7840KP?
The output type is voltage-buffered. - Is the AD7840KP suitable for high-speed DSP applications?
Yes, it is designed to be compatible with high-speed DSP processors and microprocessors. - What are the package options for the AD7840KP?
The AD7840KP is available in 24-pin DIP and 28-terminal PLCC packages. - What is the operating temperature range of the AD7840KP?
The operating temperature range is 0°C to 70°C.
