Overview
The AD5445YRUZ, produced by Analog Devices Inc., is a 12-bit current output digital-to-analog converter (DAC). This CMOS device 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. The AD5445YRUZ is part of the AD5424/AD5433/AD5445 family, which offers 8-, 10-, and 12-bit resolutions, respectively. It features a fast parallel interface with a write cycle time of 17 ns and an update rate of 20.4 MSPS. The device is known for its excellent 4-quadrant multiplication characteristics and a large signal multiplying bandwidth of up to 10 MHz.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/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 | - | 5.5 V | - | - |
| Power Consumption (IDD) | 0.4 µA | - | 5 µA | - | Logic inputs = 0 V or VDD, T = –40°C to +125°C |
| Package Type | - | - | - | 20-Lead TSSOP | - |
Key Features
- Fast parallel interface with a write cycle time of 17 ns and an update rate of 20.4 MSPS.
- Excellent 4-quadrant multiplication characteristics with a large signal multiplying bandwidth of up to 10 MHz.
- Guaranteed monotonicity and low differential nonlinearity (–1/+2 LSB).
- Data readback function allowing the user to read the contents of the DAC register via the DB pins.
- Power-on reset with brownout detection and zero-scale output on power-up.
- Low power consumption (typical 0.4 µA).
- Extended temperature range: –40°C to +125°C.
- Integrated feedback resistor (RFB) for temperature tracking and full-scale voltage output when combined with an external I-to-V precision amplifier.
Applications
- Portable battery-powered applications.
- Waveform generators.
- Analog processing and instrumentation applications.
- Programmable amplifiers and attenuators.
- Digitally controlled calibration.
- Programmable filters and oscillators.
- Composite video and ultrasound applications.
- Gain, offset, and voltage trimming.
Q & A
- What is the resolution of the AD5445YRUZ DAC?
The AD5445YRUZ is a 12-bit current output digital-to-analog converter.
- What is the power supply range for the AD5445YRUZ?
The device operates from a 2.5 V to 5.5 V power supply.
- What is the typical power consumption of the AD5445YRUZ?
The typical power consumption is 0.4 µA.
- What is the temperature range for the AD5445YRUZ?
The device operates over an extended temperature range of –40°C to +125°C.
- Does the AD5445YRUZ support data readback?
Yes, the AD5445YRUZ supports data readback, allowing the user to read the contents of the DAC register via the DB pins.
- What is the multiplying bandwidth of the AD5445YRUZ?
The device has a large signal multiplying bandwidth of up to 10 MHz.
- What package types are available for the AD5445YRUZ?
The AD5445YRUZ is available in a 20-Lead TSSOP package.
- Is the AD5445YRUZ suitable for battery-powered applications?
Yes, the device is suitable for battery-powered applications due to its low power consumption and wide power supply range.
- What are some common applications of the AD5445YRUZ?
Common applications include waveform generators, analog processing, instrumentation, programmable amplifiers and attenuators, and more.
- Does the AD5445YRUZ have integrated feedback resistors?
Yes, the device includes an integrated feedback resistor (RFB) for temperature tracking and full-scale voltage output.
