AD4003BRUZ - 18-Bit 2MSPS SAR ADC | Analog Devices
MPN: AD4003BRUZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $17.87 | $17.87 |
| 10 | $16.5 | $165.00 |
| 100 | $15.2 | $1,520.00 |
| 500 | $14.1 | $7,050.00 |
| 1,000 | $13 | $13,000.00 |
AD4003BRUZ Overview
What is a SAR ADC? A successive approximation register (SAR) ADC is a type of analog-to-digital converter that uses a binary search algorithm to convert an analog input into a digital output. It is known for its high speed, low power consumption, and high accuracy, making it ideal for applications such as industrial process control, medical instrumentation, and test and measurement equipment. SAR ADCs are part of the broader category of data converters, which also includes delta-sigma and pipeline ADCs, and are essential components in mixed-signal systems.
Key features of the AD4003BRUZ include its 18-bit resolution, 2 MSPS throughput, and Easy Drive technology, which simplifies the driving of the analog inputs by reducing the input current and settling time requirements. The device also offers a wide input voltage range, low power dissipation, and a serial interface that is compatible with SPI. These features make it suitable for high-performance applications where accuracy and speed are critical.
Technically, the AD4003BRUZ uses a precision SAR architecture with an internal reference buffer and a high-speed serial interface. It supports both single-ended and differential input configurations, and includes a flexible power-down mode to reduce power consumption during idle periods. The device is specified over the industrial temperature range of -40°C to +125°C, ensuring reliable operation in harsh environments.
Typical applications for the AD4003BRUZ include industrial automation, medical imaging, vibration analysis, and high-speed data acquisition systems. Its high resolution and speed make it ideal for capturing fast-changing signals with high fidelity, while its low power consumption is beneficial for battery-powered and portable instruments.
When designing with the AD4003BRUZ, it is important to provide a clean, low-noise power supply and a stable reference voltage to achieve the specified performance. Proper PCB layout, including adequate decoupling and grounding, is essential to minimize noise and ensure accurate conversions.
Drop-in alternatives for AD4003BRUZ — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with AD4003BRUZ (same form factor and footprint) — differing in Resolution, Package, Interface, Power Dissipation, Input Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
AD4003BRMZ
✅ Drop-In📋 Reference alternative (not in catalog)
AD4000BRUZ
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$8.1 / Unit
View Datasheet →AD4001BRUZ
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$6.6818 / Unit
View Datasheet →AD7980BRMZ
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$16.8636 / Unit
View Datasheet →AD7690BRMZ
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$17.6 / Unit
View Datasheet →AD4003BRUZ Maximum Ratings & Electrical Characteristics
| Resolution | 18 Bit |
| Number of Channels | 1 |
| Input Type | Differential |
| Sampling Rate | 2 MSPS |
| Architecture | SAR |
| Interface | SPI |
| Supply Voltage | 1.8 V to 5.5 V |
| Reference Voltage | 2.5 V to 5 V |
| Power Dissipation | 15 mW at 2 MSPS |
| Operating Temperature | -40°C to +125°C |
| Package | 10-MSOP |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Easy Drive Technology | Yes |
| SNR | 100 dB |
AD4003BRUZ Pin Configuration
| Pin 1 | VDD — Power supply |
| Pin 2 | GND — Ground |
| Pin 3 | IN+ — Positive differential input |
| Pin 4 | IN- — Negative differential input |
| Pin 5 | REF — Reference voltage input |
| Pin 6 | GND — Ground |
| Pin 7 | SCK — Serial clock input |
| Pin 8 | SDI — Serial data input |
| Pin 9 | SDO — Serial data output |
| Pin 10 | CNV — Convert input |
Typical Applications
AD4003BRUZ is suitable for 6 applications: Industrial Process Control, Medical Instrumentation, Vibration Analysis, High-Speed Data Acquisition, Battery-Powered Instruments, Test and Measurement.
Industrial Process Control
The AD4003BRUZ's 18-bit resolution and 2 MSPS sampling rate enable precise monitoring and control of industrial processes. Its differential input rejects common-mode noise, ensuring accurate measurements in noisy factory environments. The low power consumption and wide temperature range make it suitable for remote sensors and control modules. With Easy Drive technology, it simplifies the interface to sensors and transducers, reducing design complexity and improving system reliability.
Recommended
Medical Instrumentation
In medical devices such as patient monitors and diagnostic equipment, the AD4003BRUZ provides high-resolution conversion of biosignals with low noise and low power. Its 100 dB SNR ensures accurate representation of small physiological signals, while the small MSOP package saves board space in portable devices. The SPI interface allows easy integration with microcontrollers, and the wide supply voltage range accommodates battery-powered operation. The device's reliability over the industrial temperature range is critical for medical applications.
Recommended
Vibration Analysis
The AD4003BRUZ is ideal for vibration analysis in predictive maintenance and structural health monitoring. Its 2 MSPS sampling rate captures high-frequency vibration signals, while the 18-bit resolution provides fine amplitude resolution for detecting subtle changes. The differential input reduces interference from electromagnetic sources, and the low power consumption enables deployment in wireless sensor nodes. Easy Drive technology reduces input settling time, allowing accurate sampling of fast transients.
Recommended
High-Speed Data Acquisition
For high-speed data acquisition systems, the AD4003BRUZ offers a balance of speed and resolution. Its 2 MSPS throughput allows digitization of fast signals, and the 18-bit resolution ensures high fidelity. The SPI interface supports high-speed data transfer, and the low power dissipation is beneficial in multi-channel systems. The device's Easy Drive feature simplifies the analog front-end, reducing component count and design time. It is suitable for applications like radar, lidar, and high-speed test equipment.
Recommended
Battery-Powered Instruments
The AD4003BRUZ's low power consumption makes it ideal for battery-powered instruments such as portable multimeters and data loggers. It operates from a single 1.8 V to 5.5 V supply, allowing direct battery connection. The device includes a power-down mode to extend battery life during idle periods. Its small MSOP package and SPI interface reduce board space and simplify design. The high resolution and accuracy ensure reliable measurements in field applications.
Recommended
Test and Measurement
In test and measurement equipment, the AD4003BRUZ provides the accuracy and speed needed for benchtop instruments and automated test systems. Its 18-bit resolution and 2 MSPS sampling rate enable precise characterization of electronic components and signals. The differential input and high SNR ensure accurate measurements even in the presence of noise. The device's SPI interface allows easy integration with FPGAs and microcontrollers, and its low power consumption reduces thermal effects in sensitive measurements.
Recommended
Recommended Products Summary
Engineering reference data for AD4003BRUZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD4003BRMZ | AD4000BRUZ | AD4001BRUZ | AD7980BRMZ | AD7690BRMZ |
|---|---|---|---|---|---|---|
| Package | 10-MSOP | 10-MSOP | 10-MSOP | 10-MSOP | 10-MSOP | 10-MSOP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 18-bit | 18-bit | 16-bit | 18-bit | 16-bit | 18-bit |
| Sampling Rate | 2 MSPS | 2 MSPS | 2 MSPS | 1 MSPS | 1 MSPS | 400 kSPS |
| Input Type | Differential | Differential | Differential | Differential | Differential | Differential |
| Interface | SPI | SPI | SPI | SPI | SPI | SPI |
| Supply Voltage | 1.8V to 5.5V | 1.8V to 5.5V | 1.8V to 5.5V | 1.8V to 5.5V | 2.3V to 5.5V | 2.3V to 5.5V |
| Power Dissipation | 15 mW | 15 mW | 15 mW | 10 mW | 7 mW | 4 mW |
Key Differentiators
- 18-bit resolution at 2 MSPS (vs AD7980BRMZ)
- Easy Drive technology (vs AD7690BRMZ)
- Wide supply voltage range (vs AD7980BRMZ)
Design Notes
Provide a clean, low-noise power supply for the AD4003BRUZ. Use a low-dropout regulator (LDO) to generate VDD, and place 0.1uF and 10uF decoupling capacitors close to the VDD pin. The reference voltage should be buffered with a precision reference like the AD780 to ensure stable conversions.
For optimal performance, use a solid ground plane and separate analog and digital ground areas. Route the differential input traces symmetrically and keep them away from digital signals. Place the ADC close to the signal source to minimize trace length and reduce noise pickup.
Avoid driving the analog inputs with high-impedance sources without buffering. The Easy Drive technology reduces input current, but a low-impedance source is still recommended. Also, ensure the reference voltage is stable and noise-free, as it directly affects the ADC's accuracy.
Compliance Information
RoHS compliant per Analog Devices product page. No AEC-Q100 qualification for this part.
