Overview
The AD5445YRUZ-REEL is a 12-bit current output digital-to-analog converter (DAC) produced by Analog Devices Inc. This device is part of the AD5424/AD5433/AD5445 family, which includes 8-, 10-, and 12-bit DACs, respectively. The AD5445 operates from a 2.5 V to 5.5 V power supply, making it suitable for a wide range of applications, including battery-powered devices. It features a fast parallel interface with a write cycle time of 17 ns and an update rate of 20.4 MSPS. The DAC is known for its high accuracy and monotonicity, ensuring reliable performance in various environments.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| Resolution | 12 Bits | ||
| Relative Accuracy | ±1 LSB | ||
| Differential Nonlinearity | –1/+2 LSB | Guaranteed monotonic | |
| Gain Error | ±10 mV | ||
| Gain Error Temperature Coefficient | ±5 ppm/°C | ||
| Output Leakage Current | ±10 nA | Data = 0×0000, TA = 25°C | |
| Power Supply Range | 2.5 V to 5.5 V | ||
| Power Consumption | 0.4 µA (typical) | Logic inputs = 0 V or VDD, T = –40°C to +125°C | |
| Operating Temperature Range | –40°C to +125°C | ||
| Package Type | 20-lead TSSOP and chip scale (4 mm × 4 mm) |
Key Features
- Fast parallel interface with a 17 ns write cycle time and an update rate of 20.4 MSPS.
- Integrated feedback resistor (RFB) for temperature tracking and full-scale voltage output.
- Guaranteed monotonic 4-quadrant multiplication.
- Power-on reset with brownout detection.
- Data readback function.
- Low power consumption: 0.4 µA typical.
- Extended temperature range: –40°C to +125°C.
- Available in 20-lead TSSOP and chip scale packages.
Applications
- Portable battery-powered applications.
- Waveform generators.
- Analog processing and instrumentation.
- Programmable amplifiers and attenuators.
- Digitally controlled calibration.
- Programmable filters and oscillators.
- Composite video and ultrasound systems.
- Gain, offset, and voltage trimming.
Q & A
- What is the resolution of the AD5445YRUZ-REEL DAC?
The AD5445YRUZ-REEL has a resolution of 12 bits. - What is the operating temperature range of the AD5445YRUZ-REEL?
The operating temperature range is –40°C to +125°C. - What is the power supply range for the AD5445YRUZ-REEL?
The power supply range is 2.5 V to 5.5 V. - What is the typical power consumption of the AD5445YRUZ-REEL?
The typical power consumption is 0.4 µA. - Does the AD5445YRUZ-REEL support data readback?
Yes, it supports data readback. - What is the write cycle time of the AD5445YRUZ-REEL?
The write cycle time is 17 ns. - What are the package options for the AD5445YRUZ-REEL?
The device is available in 20-lead TSSOP and chip scale (4 mm × 4 mm) packages. - Is the AD5445YRUZ-REEL guaranteed to be monotonic?
Yes, it is guaranteed to be monotonic. - What are some common applications of the AD5445YRUZ-REEL?
Common applications include portable battery-powered devices, waveform generators, analog processing, and programmable amplifiers and attenuators. - Does the AD5445YRUZ-REEL have power-on reset and brownout detection?
Yes, it has power-on reset with brownout detection.
