Core Technical Specifications

• Product Type: 16-bit single-channel voltage-output DAC with serial interface control and unbuffered output design
• Brand: Analog Devices (ADI), a global leader in high-performance analog semiconductor solutions
• Resolution and Linearity: 16-bit resolution with guaranteed monotonicity; Integral Nonlinearity (INL) ≤ ±1LSB, Differential Nonlinearity (DNL) ≤ ±0.5LSB; stable accuracy maintained across the full temperature range without calibration
• Output Characteristics: Unipolar output range from 0V to VREF; unbuffered design with an output impedance of approximately 6.25kΩ, capable of directly driving loads above 60kΩ without additional buffer circuits
• Settling Time: 1μs (to 1/2 LSB) with a conversion rate of 17V/μs, enabling fast response to changes in digital input signals
• Power Consumption: Typical power consumption of only 0.625mW at 5V supply, reducing to 0.375mW at 3V supply; even lower standby power consumption, suitable for battery-powered portable devices
• Noise Performance: Ultra-low output noise spectral density of 11.8nV/√Hz; peak-to-peak noise of only 0.134μV in the 0.1Hz~10Hz band, ensuring low-noise analog signal output
• Supply and Reference Voltage: Supply voltage range of 2.7V~5.5V (±10%), compatible with standard logic power supplies; reference voltage range of 2.0V~VDD, supporting flexible output amplitude configuration
• Package and Packaging: 14-pin narrow-body SOIC package (identified by "CRZ"); "REEL7" indicates 7-inch reel packaging (suitable for high-volume surface-mount production)
• Operating Temperature: -40°C~+85°C (Grade C wide temperature range), adapting to harsh industrial-grade environments
• ESD Protection: All pins feature 5kV HBM ESD protection, enhancing anti-interference reliability in industrial scenarios

Key Features

1. Flexible Interface and Control Characteristics

• 3-wire serial interface compatible with SPI/QSPI/MICROWIRE/DSP standards, supporting a maximum clock frequency of 25MHz for high-speed data transmission
• 16-bit data word uses MSB-first transmission format, combined with Chip Select (CS) and Serial Clock (SCLK) synchronization mechanisms, enabling seamless connection with various microcontrollers
• Unique Load DAC (LDAC) pin supports asynchronous update of DAC output without waiting for serial transmission completion, enhancing system response flexibility
• Power-On Reset Function: Automatically clears the DAC output to 0V when powered on, ensuring the system starts in a safe state and avoiding abnormal output
• Supports daisy-chain connection mode, allowing multiple DACs to share a serial bus and simplifying multi-channel system design

2. High Reliability and Environmental Adaptability

• Wide operating temperature range (-40°C~+85°C), meeting the requirements of harsh temperature environments such as industrial control and outdoor equipment
• Low Power Supply Rejection Ratio (PSRR) ≥ 80dB (1kHz), reducing the impact of power supply fluctuations on output accuracy
• Lead-free, RoHS-compliant package, meeting environmental standards and adapting to global electronic device compliance requirements
• Storage temperature range of -65°C~+150°C, ensuring device stability during transportation, storage, and extreme environments

3. Differentiated Advantages (Compared with the same-series AD5542)

• Focuses on unipolar output scenarios with simpler circuit design and more competitive cost (AD5542 supports bipolar output and requires additional op-amp configuration)
• Maintains consistent high precision and fast settling time at the same power consumption level, suitable for cost-sensitive applications that do not require bipolar output
• Pin-compatible with AD5542, enabling pin-to-pin replacement in the same package, facilitating system design upgrades or cost optimization

Internal Architecture and Working Principle

1. The 16-bit digital input signal is divided into 4 upper bits and 12 lower bits; the 4 upper bits are decoded to drive 15 precision-matched switches, controlling the connection of corresponding resistor branches to VREF or AGND;
2. The 12 lower bits drive a high-precision R-2R ladder network, providing fine voltage division adjustment to ensure accurate output with 16-bit resolution;
3. The output stage is directly connected to the voltage division network; the unbuffered design reduces power consumption and delay while retaining external flexible configuration space (op-amps can be added as needed to expand driving capability);
4. Built-in Kelvin sense pins (REFIN and AGND) are used for precise sampling of reference voltage and analog ground, reducing impedance errors caused by PCB layout and further improving measurement accuracy;
5. The serial interface module converts external digital signals into internal control signals, and cooperates with the LDAC pin to achieve asynchronous updates, meeting the real-time control needs of high-speed systems.

Application Fields

1. Industrial Automation and Control

• Precision motor servo control systems, providing high-precision position/speed control reference voltage
• Analog output modules for PLC (Programmable Logic Controller) and DCS (Distributed Control System)
• Hydraulic/pneumatic proportional valve control in industrial robots, enabling smooth mechanical movement
• Setpoint signal generation in process control, ensuring stable production process parameters

2. Test and Measurement Equipment

• High-precision reference signal source for Automatic Test Equipment (ATE) used to calibrate tested devices
• Analog output channels for Data Acquisition Systems (DAQ) to generate customized test waveforms
• Calibration modules for measuring instruments such as multimeters and oscilloscopes, providing standard voltage references

3. Medical and Portable Devices

• Precise control signal output for medical monitors, infusion pumps, and other equipment
• Low-power analog signal generation for portable analytical instruments (e.g., handheld spectrometers)
• Microcurrent/voltage control modules in biomedical equipment to support precision experimental operations

4. Communication and Consumer Electronics

• RF module gain control in communication base stations to optimize signal transmission quality
• Digital-to-analog conversion in high-end audio equipment, providing low-noise audio output
• Sensor calibration and control signal generation in smart home devices