Overview
The AD7547JNZ, produced by Analog Devices Inc., is a dual 12-bit CMOS Digital-to-Analog Converter (DAC) integrated into a single monolithic chip. This device is designed to provide high precision and versatility, making it suitable for a variety of applications. The AD7547 includes two 12-bit current output DACs, level shifters, data registers, and control logic, facilitating easy interfacing with microprocessors. The device is manufactured using the Linear Compatible CMOS (LC²MOS) process, which allows for fast digital logic and precise linear circuitry on the same die.
Key Specifications
| Parameter | Description |
|---|---|
| Resolution | 12 bits |
| Number of DACs | 2 |
| Output Type | Current output |
| Reference Inputs | Separate reference inputs for each DAC |
| Feedback Resistors | Separate feedback resistors for each DAC |
| Analog Ground | Separate AGND lines for each DAC |
| Control Signals | CSA, CSB, WR for DAC selection and loading |
| Logic Compatibility | TTL, 74HC, and 5V CMOS logic level inputs |
| Package Types | 24-Lead PDIP, 28-Lead PLCC, 24-Lead SOIC (Wide) |
| Temperature Range | Guaranteed 12-bit monotonicity over full temperature range |
Key Features
- Dual 12-Bit DACs: Two 12-bit current output DACs on a single monolithic chip, saving valuable board space.
- Monolithic Construction: Ensures excellent thermal and gain error tracking.
- Separate Reference Inputs and Feedback Resistors: Each DAC has separate reference inputs and feedback resistors, enabling 4-quadrant multiplication capabilities.
- Control Logic and Data Registers: Includes level shifters, data registers, and control logic for easy microprocessor interfacing.
- Double Buffering: Allows simultaneous update of both DACs.
- Asynchronous CLR Line: Useful in calibration routines to clear all registers.
- Logic Compatibility: Speed compatible with most microprocessors and accepts TTL, 74HC, and 5V CMOS logic level inputs.
Applications
- Automatic Test Equipment: Ideal for precision measurement and control in automated testing.
- Programmable Filters: Used in signal processing and filtering applications.
- Audio Applications: Suitable for audio signal generation and processing.
- Synchro Applications: Used in synchronization and timing applications.
- Process Control: Employed in industrial control systems for precise control and monitoring.
Q & A
- What is the resolution of the AD7547JNZ DACs?
The AD7547JNZ has two 12-bit DACs.
- What type of output does the AD7547JNZ provide?
The AD7547JNZ provides current output.
- Does the AD7547JNZ have separate reference inputs for each DAC?
Yes, each DAC has a separate reference input.
- What logic levels does the AD7547JNZ support?
The AD7547JNZ supports TTL, 74HC, and 5V CMOS logic level inputs.
- What are the package options available for the AD7547JNZ?
The AD7547JNZ is available in 24-Lead PDIP, 28-Lead PLCC, and 24-Lead SOIC (Wide) packages.
- Is the AD7547JNZ guaranteed to be monotonic over the full temperature range?
Yes, the AD7547JNZ is guaranteed to be 12-bit monotonic over the full temperature range.
- What is the purpose of the asynchronous CLR line on the AD7547JNZ?
The asynchronous CLR line is used to clear all registers, which is useful in calibration routines.
- Can the AD7547JNZ be used in audio applications?
Yes, the AD7547JNZ is suitable for audio signal generation and processing.
- Is the AD7547JNZ compatible with most microprocessors?
Yes, the AD7547JNZ is speed compatible with most microprocessors.
- What manufacturing process is used for the AD7547JNZ?
The AD7547JNZ is manufactured using the Linear Compatible CMOS (LC²MOS) process.
