Overview
The AD7840JN, produced 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 with 14-bit accuracy.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 14 |
| Interface | Parallel and Serial |
| Signal-to-Noise Ratio | 80 dB |
| Power Consumption | 70 mW (typical) |
| Supply Voltage | ±4.75 V to ±5.25 V |
| Output Range | ±3 V |
| Settling Time | 4 μs |
| Integral Nonlinearity (INL) | 2 LSB |
| Package | 24-pin plastic and hermetic dual-in-line package (DIP), 28-terminal plastic leaded chip carrier (PLCC) |
Key Features
- Complete 14-bit D/A function with on-chip reference and output buffer amplifier.
- Dynamic specifications for DSP users, including signal-to-noise ratio and harmonic distortion.
- Fast and versatile microprocessor interface with 14-bit parallel and serial capabilities.
- Low power consumption of 70 mW typical.
- Compatible with high-speed DSP processors and 16-bit microprocessors.
- Double-buffered interface logic with 14-bit input latch and 14-bit DAC latch.
Applications
The AD7840JN is suitable for a variety of applications, including digital signal processing, audio and video systems, medical equipment, and industrial control systems. Its high accuracy and dynamic performance make it particularly useful in environments where precise analog output is required.
Q & A
- What is the resolution of the AD7840JN DAC?
The AD7840JN has a resolution of 14 bits. - What types of interfaces does the AD7840JN support?
The AD7840JN supports both parallel and serial interfaces. - What is the signal-to-noise ratio of the AD7840JN?
The signal-to-noise ratio of the AD7840JN is 80 dB. - What is the typical power consumption of the AD7840JN?
The typical power consumption of the AD7840JN is 70 mW. - What is the output voltage range of the AD7840JN?
The output voltage range of the AD7840JN is ±3 V. - How long does it take for the AD7840JN to settle?
The settling time of the AD7840JN is 4 μs. - What is the integral nonlinearity (INL) of the AD7840JN?
The integral nonlinearity (INL) of the AD7840JN is 2 LSB. - In what packages is the AD7840JN available?
The AD7840JN is available in 24-pin plastic and hermetic dual-in-line package (DIP) and 28-terminal plastic leaded chip carrier (PLCC). - Is the AD7840JN compatible with high-speed DSP processors?
Yes, the AD7840JN is compatible with high-speed DSP processors and 16-bit microprocessors. - How is data loaded into the AD7840JN?
Data is loaded into the AD7840JN through either parallel or serial modes, controlled by CS, WR, SCLK, SYNC, and SDATA signals.
