Overview
The AD7809BST from Analog Devices Inc. is an octal 10-bit digital-to-analog converter (DAC) that offers parallel loading capabilities. This device is part of the AD7804/AD7805/AD7808/AD7809 family, which provides a range of loading options and channel configurations. The AD7809 operates from a +3.3 V to +5 V power supply and includes an on-chip reference, making it a versatile component for various applications.
Key Specifications
| Parameter | Value | Units | Comments |
|---|---|---|---|
| Resolution | 10 | Bits | |
| Relative Accuracy | ±4 | LSB max | |
| Gain Error | ±3 | % FSR max | |
| Bias Offset Error | ±60 | mV max | DAC Code = 0.5 Full Scale |
| Zero-Scale Error | ±35 | mV max | DAC Code = 000H for Offset Binary |
| Minimum Load Resistance | 2 kΩ min | ||
| Output Voltage Range | VBIAS ± 15/16 × VBIAS | ||
| Power Supply | +3.3 V to +5 V (±10%) | ||
| Package Type | 44-Lead TQFP (10mm x 10mm) |
Key Features
- Octal 10-bit digital-to-analog converters with parallel loading capabilities
- Operates from a +3.3 V to +5 V power supply
- On-chip reference and on-chip control registers for system and individual channel control
- Double buffered data inputs allowing simultaneous update of all analog outputs using the asynchronous LDAC input
- Power-down mode and standby mode for all DACs or individual DACs
- Low power consumption with all CMOS construction
- On-chip Sub DAC for shifting the transfer function of each individual 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 AD7809BST?
The AD7809BST has a resolution of 10 bits.
- What is the operating voltage range of the AD7809BST?
The AD7809BST operates from a +3.3 V to +5 V power supply.
- Does the AD7809BST have an on-chip reference?
- What is the minimum load resistance for the AD7809BST?
The minimum load resistance is 2 kΩ.
- Can the AD7809BST be powered down?
- What package type is the AD7809BST available in?
The AD7809BST is available in a 44-Lead TQFP (10mm x 10mm) package.
- What are the key applications of the AD7809BST?
The AD7809BST is used in Optical Disk Drives, Instrumentation and Communication Systems, Process Control and Voltage Setpoint Control, Trim Potentiometer Replacement, and Automatic Calibration.
- Does the AD7809BST support simultaneous update of all analog outputs?
- What is the output voltage range of the AD7809BST?
The output voltage range is VBIAS ± 15/16 × VBIAS.
- Does the AD7809BST have individual channel control?
