Overview
The AD5425YRM from Analog Devices Inc. is a CMOS, 8-bit, current output digital-to-analog converter (DAC) designed for a wide range of applications. It operates from a 2.5 V to 5.5 V power supply, making it suitable for battery-powered devices and other low-voltage applications. The DAC features a double-buffered, 3-wire serial interface compatible with SPI®, QSPI™, MICROWIRE™, and most DSP interface standards. On power-up, the internal shift register and latches are filled with 0s, and the DAC outputs are set to 0 V. The AD5425YRM is manufactured on a CMOS submicron process, offering excellent 4-quadrant multiplication characteristics and large signal multiplying bandwidths of up to 10 MHz.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Resolution | 8 Bits | ||||
| Relative Accuracy | ±0.25 LSB | ||||
| Differential Nonlinearity | ±0.5 LSB | ||||
| Gain Error | ±10 mV | ||||
| Gain Error Temperature Coefficient | ±5 ppm/°C | ||||
| Output Leakage Current | ±10 nA | ±20 nA | A | Data = 0x0000, TA = 25°C, IOUT1 | |
| Reference Input Range | ±10 V | V | VREF Input | ||
| Power Supply Range | 2.5 V | 5.5 V | V | ||
| Power Consumption | 0.4 µA | 0.6 µA | 5 µA | A | Logic inputs = 0 V or VDD, TA = 25°C |
| Maximum Clock Frequency | 50 MHz | Hz |
Key Features
- 4-Quadrant Multiplication: Offers excellent multiplication characteristics with large signal multiplying bandwidths up to 10 MHz.
- Power-On Reset with Brownout Detection: Ensures the DAC outputs are set to 0 V on power-up and includes brownout detection for robust operation.
- LDAC Function: Allows simultaneous updates in multi-DAC configurations.
- Low Power Consumption: Typical power consumption of 0.4 µA, making it suitable for battery-powered applications.
- Double-Buffered Serial Interface: Compatible with SPI®, QSPI™, MICROWIRE™, and most DSP interface standards.
- Integrated Feedback Resistor (RFB): Provides temperature tracking and full-scale voltage output when combined with an external I-to-V precision amplifier.
Applications
- Portable Battery-Powered Applications: Ideal for devices that require low power consumption.
- Waveform Generators: Can be used to generate various waveforms due to its high bandwidth and accuracy.
- Analog Processing and Instrumentation: Suitable for applications requiring precise analog signal processing.
- Programmable Amplifiers and Attenuators: Can be used in calibration and trimming of gain and offset.
- Programmable Filters and Oscillators: Useful in applications requiring dynamic filter and oscillator configurations.
- Composite Video and Ultrasound: Can be applied in video and ultrasound systems due to its high bandwidth and accuracy.
Q & A
- What is the resolution of the AD5425YRM DAC?
The AD5425YRM has an 8-bit resolution.
- What is the power supply range for the AD5425YRM?
The power supply range is from 2.5 V to 5.5 V.
- What is the typical power consumption of the AD5425YRM?
The typical power consumption is 0.4 µA.
- What is the maximum clock frequency for the AD5425YRM?
The maximum clock frequency is 50 MHz.
- What interface standards is the AD5425YRM compatible with?
The AD5425YRM is compatible with SPI®, QSPI™, MICROWIRE™, and most DSP interface standards.
- What is the temperature range for the Y version of the AD5425YRM?
The temperature range for the Y version is from −40°C to +125°C.
- Does the AD5425YRM have an integrated feedback resistor (RFB)?
Yes, the AD5425YRM includes an integrated feedback resistor (RFB) for temperature tracking and full-scale voltage output.
- What are some common applications of the AD5425YRM?
Common applications include portable battery-powered devices, waveform generators, analog processing, instrumentation, programmable amplifiers and attenuators, and more.
- How does the LDAC function work in the AD5425YRM?
The LDAC function allows for simultaneous updates in multi-DAC configurations.
- What is the reference input range for the AD5425YRM?
The reference input range is ±10 V.
