Overview
The AD7808BRZ is an octal 10-bit digital-to-analog converter (DAC) produced by Analog Devices Inc. This component operates from a +3.3V to +5V (±10%) power supply and features serial load capabilities. It incorporates an on-chip reference and provides output signals in the form of VBIAS ± VSWING, where VSWING is derived internally from VBIAS. The AD7808BRZ includes on-chip control registers, such as a system control register and channel control registers, allowing for both global and individual control over the DACs. Each DAC can be shifted around the VBIAS point using an on-chip Sub DAC, and all DACs have double-buffered data inputs for simultaneous updating of analog outputs using the asynchronous LDAC input.
Key Specifications
| Parameter | Value | Comments |
|---|---|---|
| Resolution | 10 bits | |
| Number of D/A Converters | 8 | |
| Supply Voltage | 3V to 5.5V | Digital and Analog |
| Operating Temperature | -40°C to 85°C | |
| Package Type | 24-SOIC | Surface Mount |
| Settling Time | 4µs | |
| Reference Type | External, Internal | |
| Data Interface | SPI (3-wire serial) | |
| Output Type | Voltage - Buffered | |
| INL/DNL (LSB) | ±4 (Max), ±0.125 |
Key Features
- Octal 10-bit digital-to-analog conversion with serial load capabilities.
- Operates from a +3.3V to +5V (±10%) power supply.
- On-chip reference and output signals in the form of VBIAS ± VSWING.
- On-chip control registers for system and individual DAC control.
- Double-buffered data inputs for simultaneous updating of analog outputs using the asynchronous LDAC input.
- Sub DAC for shifting the transfer function of each DAC around the VBIAS point.
Applications
- Optical disk drives
- Instrumentation and communication systems
- Process control and voltage setpoint control
- Trim potentiometer replacement
- Automatic calibration.
Q & A
- What is the resolution of the AD7808BRZ DAC?
The AD7808BRZ has a resolution of 10 bits.
- How many DACs are included in the AD7808BRZ?
The AD7808BRZ includes 8 DACs.
- What is the operating voltage range of the AD7808BRZ?
The AD7808BRZ operates from a +3.3V to +5V (±10%) power supply.
- What is the package type of the AD7808BRZ?
The AD7808BRZ is packaged in a 24-SOIC surface mount package).
- What is the settling time of the AD7808BRZ?
The settling time of the AD7808BRZ is 4µs).
- What type of data interface does the AD7808BRZ use?
The AD7808BRZ uses a 3-wire serial (SPI) data interface).
- What are the typical applications of the AD7808BRZ?
Typical applications include optical disk drives, instrumentation and communication systems, process control, voltage setpoint control, trim potentiometer replacement, and automatic calibration).
- Does the AD7808BRZ have on-chip control registers?
Yes, the AD7808BRZ includes on-chip control registers for system and individual DAC control).
- Can the AD7808BRZ update all analog outputs simultaneously?
Yes, the AD7808BRZ can update all analog outputs simultaneously using the asynchronous LDAC input).
- Is the AD7808BRZ RoHS compliant?
Yes, the AD7808BRZ is RoHS compliant).
