Overview
The AD7528LRZ-REEL, produced by Analog Devices Inc., is a monolithic dual 8-bit digital-to-analog converter (DAC) known for its excellent DAC-to-DAC matching. This device is particularly suited for applications in audio, graphics, and process control due to its robust performance characteristics.
The AD7528 is available in various packages, including 20-pin DIP and 20-terminal surface mount packages such as the 20-SOIC (0.295", 7.50mm width) used in the AD7528LRZ-REEL variant. It features separate on-chip latches for each DAC, facilitating easy interface with microprocessors through a common 8-bit TTL/CMOS compatible input port.
The device operates within a power supply range of +5V to +15V, consuming only 20mW of power. Its design includes four quadrant multiplication characteristics with separate reference inputs and feedback resistors for each DAC.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 8 |
| Number of D/A Converters | 2 |
| Settling Time | 400ns |
| Output Type | Current - Unbuffered |
| Differential Output | No |
| Data Interface | Parallel |
| Reference Type | External Voltage |
| Voltage - Supply, Analog | +5V ~ +15V |
| Voltage - Supply, Digital | +5V ~ +15V |
| INL/DNL (LSB) | ±0.5 (Max), ±1 (Max) |
| Architecture | R-2R |
| Operating Temperature | -40°C ~ 85°C |
| Package / Case | 20-SOIC (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount |
Key Features
- Excellent DAC-to-DAC matching to 1%
- On-chip latches for both DACs, enabling easy microprocessor interface
- Operation from +5V to +15V power supply, with low power dissipation of 20mW
- TTL/CMOS compatible input port
- Four quadrant multiplication characteristics with separate reference inputs and feedback resistors for each DAC
- Bus compatible with most 8-bit microprocessors (e.g., 6800, 8080, 8085, Z80)
- R-2R ladder architecture with highly stable thin film resistors
Applications
- Digital control of gain and attenuation in various circuits
- Filter parameter control in audio and signal processing systems
- Stereo audio circuits requiring precise DAC performance
- X-Y graphics and other graphical display systems
- Process control systems where accurate analog output is necessary
Q & A
- What is the AD7528LRZ-REEL used for?
The AD7528LRZ-REEL is a dual 8-bit digital-to-analog converter used in applications such as audio, graphics, and process control.
- What are the key features of the AD7528LRZ-REEL?
Key features include excellent DAC-to-DAC matching, on-chip latches, operation from +5V to +15V, TTL/CMOS compatibility, and four quadrant multiplication characteristics.
- What is the settling time of the AD7528LRZ-REEL?
The settling time is 400ns.
- What is the architecture of the AD7528LRZ-REEL?
The architecture is based on an R-2R ladder structure.
- What is the operating temperature range of the AD7528LRZ-REEL?
The operating temperature range is -40°C to 85°C.
- What type of package does the AD7528LRZ-REEL come in?
The AD7528LRZ-REEL comes in a 20-SOIC package.
- Is the AD7528LRZ-REEL RoHS compliant?
- How does the AD7528LRZ-REEL interface with microprocessors?
The device interfaces through a common 8-bit TTL/CMOS compatible input port and is bus compatible with most 8-bit microprocessors.
- What are some common applications of the AD7528LRZ-REEL?
- What is the power consumption of the AD7528LRZ-REEL?
The device dissipates only 20mW of power.
