Overview
The AD7840ARSZ, produced by Analog Devices Inc., is a fast and complete 14-bit voltage output digital-to-analog converter (DAC). This component integrates a 14-bit DAC, a 3V buried Zener reference, a DAC output amplifier, and high-speed control logic. It is designed to provide high performance and versatility, making it suitable for a wide range of applications requiring precise analog output.
Key Specifications
| Specification | Value |
|---|---|
| Number of Bits | 14 |
| Output Type | Voltage - Buffered |
| Data Interface | Parallel, Serial |
| Reference Type | External, Internal |
| Voltage - Supply, Analog | ±5V |
| Operating Temperature | -25°C ~ 85°C |
| Package / Case | 24-SSOP (0.209", 5.30mm Width) |
| Settling Time | 4µs |
| Signal-to-Noise Ratio | 80 dB |
| Max Dual Supply Voltage | 5.25 V |
| Max Input Voltage | 3.15 V |
| Max Operating Temperature | 125 °C |
Key Features
- Double-buffered interface logic with 14-bit input latch and 14-bit DAC latch.
- Parallel and serial data interface capabilities.
- Fast data setup time of 21ns, allowing direct parallel interfacing to digital signal processors and high-speed microprocessors.
- Maximum serial data clock rate of up to 6 MHz.
- Bipolar output range of ±3V.
- Low power consumption of 70 mW typical.
- Fabricated in linear compatible CMOS (LC2MOS) technology, combining precision bipolar circuits with low power CMOS logic.
Applications
The AD7840ARSZ is suitable for various applications that require high precision and speed in digital-to-analog conversion. These include:
- Digital signal processing systems.
- High-speed data acquisition systems.
- Audio and video signal generation.
- Industrial control systems.
- Medical equipment requiring precise analog outputs.
Q & A
- What is the resolution of the AD7840ARSZ DAC?
The AD7840ARSZ has a resolution of 14 bits. - What are the data interface options for the AD7840ARSZ?
The AD7840ARSZ supports both parallel and serial data interfaces. - What is the maximum serial data clock rate for the AD7840ARSZ?
The maximum serial data clock rate is up to 6 MHz. - What is the output voltage range of the AD7840ARSZ?
The output voltage range is ±3V. - What is the typical power consumption of the AD7840ARSZ?
The typical power consumption is 70 mW. - What is the operating temperature range for the AD7840ARSZ?
The operating temperature range is -25°C to 85°C. - What package options are available for the AD7840ARSZ?
The AD7840ARSZ is available in 24-pin SSOP, 24-pin PDIP, and 28-terminal PLCC packages. - How does the AD7840ARSZ handle data transfer between the input and DAC latches?
Data is transferred from the input latch to the DAC latch under control of an asynchronous LDAC signal. - What is the signal-to-noise ratio (SNR) of the AD7840ARSZ?
The signal-to-noise ratio is 80 dB. - Is the AD7840ARSZ suitable for high-speed applications?
Yes, the AD7840ARSZ is designed for high-speed applications with a fast data setup time and compatibility with high-speed DSP processors and microprocessors.
