Overview
The AD557JNZ, produced by Analog Devices Inc., is a complete voltage-output 8-bit digital-to-analog converter (DAC) integrated into a single monolithic chip. This device includes an output amplifier, a full microprocessor interface, and a precision voltage reference, eliminating the need for external components or trims. The AD557JNZ is designed using advanced monolithic bipolar technologies and features an integrated injection logic (I2L) structure, which is dense and low-power. The internal precision voltage reference is based on a patented low-voltage band-gap circuit, allowing for full-accuracy performance on a single +5 V power supply.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 8 | Bits | ||
| Relative Accuracy (0°C to 70°C) | ±1/2 LSB | |||
| Output Range | 0 | 2.56 | V | |
| Output Settling Time | 0.8 | 1.5 | µs | |
| Full-Scale Accuracy @ 25°C | ±2.5 LSB | |||
| Zero Error @ 25°C | ±1 LSB | |||
| Digital Input Current | 100 µA | |||
| Operating Voltage Range (VCC) | 4.5 | 5.5 | V | |
| Power Supply Current (ICC) | 15 | 25 | mA | |
| Operating Temperature Range | 0 | 70 | °C |
Key Features
- Complete Microprocessor Interface: The AD557JNZ includes a full microprocessor interface, making it compatible with 8-bit and 16-bit data buses.
- Precision Voltage Reference: The device features a patented low-voltage band-gap circuit for precise voltage reference, ensuring full-accuracy performance on a single +5 V power supply.
- No External Components Required: The AD557JNZ does not require any external components or trims for accurate operation, thanks to its integrated design and laser-wafer trimming of thin-film resistors.
- Fast Settling Time: The device has a settling time of 0.8 µs for a full-scale step, ensuring rapid response times.
- Monotonic Operation: Guaranteed monotonic operation over the entire operating temperature range is ensured by the use of thin-film silicon-chromium resistors.
- Low Power Consumption: The AD557JNZ operates with a low power supply current of 15 mA to 25 mA, making it energy-efficient.
Applications
- Industrial Control Systems: The AD557JNZ can be used in industrial control systems where precise analog output is required from digital inputs.
- Medical Devices: Its accuracy and reliability make it suitable for use in medical devices that require precise analog signals.
- Aerospace and Defense: The device's robustness and precision make it a candidate for use in aerospace and defense applications.
- Automotive Systems: The AD557JNZ can be integrated into automotive systems that require reliable and accurate analog output from digital inputs.
Q & A
- What is the resolution of the AD557JNZ?
The AD557JNZ has an 8-bit resolution.
- What is the output voltage range of the AD557JNZ?
The output voltage range is from 0 V to 2.56 V.
- What is the settling time for a full-scale step?
The settling time is 0.8 µs for a full-scale step.
- Does the AD557JNZ require external components or trims?
No, the AD557JNZ does not require any external components or trims for accurate operation.
- What is the operating temperature range of the AD557JNZ?
The operating temperature range is from 0°C to 70°C.
- What is the power supply current range of the AD557JNZ?
The power supply current range is from 15 mA to 25 mA.
- How is the precision voltage reference achieved in the AD557JNZ?
The precision voltage reference is achieved through a patented low-voltage band-gap circuit.
- What type of logic does the AD557JNZ use for its microprocessor interface?
The AD557JNZ uses integrated injection logic (I2L) for its microprocessor interface.
- What are the package options available for the AD557JNZ?
The AD557JNZ is available in 16-pin plastic DIP and 20-pin JEDEC standard PLCC packages.
- Is the AD557JNZ guaranteed to be monotonic over its operating temperature range?
Yes, the AD557JNZ is guaranteed to be monotonic over its entire operating temperature range.
