AD4002BRUZ - 18-Bit SAR ADC, 2 MSPS | Analog Devices
MPN： AD4002BRUZ ✓ 啟用中AD4002BRUZ 概覽
A SAR ADC is a type of analog-to-digital converter that uses a successive approximation register to convert an analog input signal into a digital output. It works by comparing the input voltage against a series of binary-weighted reference voltages, refining the approximation with each clock cycle. SAR ADCs are known for their high speed, low power consumption, and ease of use, making them ideal for applications such as data acquisition, industrial process control, and medical instrumentation.
Key features of the AD4002BRUZ include 18-bit resolution, a maximum sampling rate of 2 MSPS, and an Easy Drive architecture that simplifies the analog front-end design by reducing input drive requirements. The device also features input span compression, which eliminates the need for a negative supply to the ADC driver amplifier while preserving access to the full ADC code range. An input overvoltage clamp protects the ADC inputs against overvoltage events, minimizing disturbances on the reference pin and eliminating the need for external protection diodes.
Technically, the AD4002BRUZ uses a precision SAR architecture with an internal reference buffer, ensuring high linearity and low noise. The device supports a wide input voltage range and operates from a single 1.8V to 5V supply, making it versatile for various system power rails. The Easy Drive feature reduces the settling time requirements of the driving amplifier, allowing for lower power and simpler front-end designs.
Typical applications include high-speed data acquisition systems, industrial automation, medical imaging, and precision instrumentation. The AD4002BRUZ is also suitable for battery-powered devices due to its low power consumption. When designing with this ADC, ensure proper decoupling of the VDD and VREF pins and consider the input overvoltage clamp for robust operation in harsh environments.
直接替換替代品，適用於 AD4002BRUZ — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： AD4002BRUZ （相同外形與佔位） — 差異在於 Package, Resolution, Supply Voltage, Input Type, Interface.
AD4002BRUZ-RL7
✅ 直接替換📋 參考替代品（不在目錄中）
AD4000BRUZ
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →AD4006BRUZ
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →AD4001BRUZ
✅ 直接替換 ⚠️ 規格未經驗證✗ 缺貨
$6.6818 / 單位
查看資料表 →AD7091R-5BRUZ
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →AD4002BRUZ 最大額定值與電氣特性
| 解析度 | 18-bit |
| 取樣率 | 2 MSPS |
| Input Type | Single-ended |
| 介面 | SPI |
| 供應電壓 | 1.8V to 5V |
| 參考電壓 | VREF (external) |
| 封裝 | 16-TSSOP (0.173", 4.40mm Width) |
| 工作溫度 | -40°C to +125°C |
| 安裝類型 | Surface Mount |
| RoHS 狀態 | Compliant |
| Number of Channels | 1 |
AD4002BRUZ 腳位配置
| 腳位 1 | VDD — Power supply |
| 腳位 2 | GND — Ground |
| 腳位 3 | VREF — Reference voltage input |
| 腳位 4 | IN+ — Positive analog input |
| 腳位 5 | IN- — Negative analog input |
| 腳位 6 | SCK — Serial clock input |
| 腳位 7 | SDI — Serial data input |
| 腳位 8 | SDO — Serial data output |
| 腳位 9 | CNV — Convert input |
| 腳位 10 | BUSY — Busy output |
| 腳位 11 | GND — Ground |
| 腳位 12 | VDD — Power supply |
典型應用
AD4002BRUZ 適用於 6 應用s: High-Speed Data Acquisition, Industrial Automation, Medical Instrumentation, Precision Instrumentation, Battery-Powered Devices, Communication Systems.
High-Speed Data Acquisition
The AD4002BRUZ's 18-bit resolution and 2 MSPS sampling rate make it ideal for high-speed data acquisition systems. Its Easy Drive feature reduces input drive requirements, simplifying the analog front-end. The input overvoltage clamp protects against transients, ensuring reliable operation in industrial environments. With a wide supply range and low power, it suits portable and battery-powered data loggers.
推薦
Industrial Automation
In industrial automation, the AD4002BRUZ provides precise analog-to-digital conversion for process control and monitoring. Its wide operating temperature range (-40°C to +125°C) ensures reliability in harsh environments. The SPI interface simplifies integration with industrial microcontrollers. The input overvoltage clamp eliminates the need for external protection diodes, reducing BOM cost and board space.
推薦
Medical Instrumentation
The AD4002BRUZ is suitable for medical instrumentation such as patient monitoring and diagnostic equipment. Its high accuracy and low noise ensure precise measurements. The small 16-TSSOP package fits compact medical devices. The Easy Drive feature reduces the complexity of the driving amplifier, which is beneficial in battery-powered portable medical devices. The wide supply range allows operation from common battery voltages.
推薦
Precision Instrumentation
For precision instrumentation like digital multimeters and spectrum analyzers, the AD4002BRUZ offers 18-bit resolution and high linearity. Its SPI interface allows easy connection to DSPs and FPGAs. The input span compression feature eliminates the need for a negative supply, simplifying the design. The overvoltage clamp protects sensitive inputs, enhancing robustness in test and measurement equipment.
推薦
Battery-Powered Devices
The AD4002BRUZ's low power consumption and wide supply range (1.8V to 5V) make it ideal for battery-powered devices. Its small package and Easy Drive feature reduce overall system power and size. The input overvoltage clamp provides protection without external components, saving board space. This makes it suitable for portable medical devices, handheld instruments, and wireless sensors.
推薦
Communication Systems
In communication systems, the AD4002BRUZ can be used for baseband signal processing and digital predistortion. Its high sampling rate and resolution enable accurate signal capture. The SPI interface supports high-speed data transfer. The Easy Drive feature simplifies the interface to RF front-ends. The wide supply range allows integration with various logic levels.
推薦
推薦產品摘要
工程參考資料，適用於 AD4002BRUZ — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | AD4000BRUZ | AD4006BRUZ | AD4001BRUZ |
|---|---|---|---|---|
| Resolution | 18-bit | 16-bit | 18-bit | 16-bit |
| Sampling Rate | 2 MSPS | 1 MSPS | 500 kSPS | 2 MSPS |
| Supply Voltage | 1.8V to 5V | 1.8V to 5V | 1.8V to 5V | 1.8V to 5V |
| Package | 16-TSSOP | 16-TSSOP | 16-TSSOP | 16-TSSOP |
| Interface | SPI | SPI | SPI | SPI |
| Input Type | Single-ended | Single-ended | Single-ended | Single-ended |
| Operating Temperature | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
主要差異化特點
- 18-bit resolution at 2 MSPS (對比AD4000BRUZ)
- Easy Drive technology (對比AD4006BRUZ)
- Input overvoltage clamp (對比AD4001BRUZ)
設計說明
Decouple the VDD pin with a 10uF ceramic capacitor and a 0.1uF capacitor placed as close to the pin as possible. The VREF pin should also be decoupled with a 10uF capacitor to ensure a stable reference voltage. Proper decoupling minimizes noise and ensures accurate conversions.
Use a solid ground plane under the ADC to minimize noise. Keep analog and digital grounds separate and connect them at a single point. Route the SPI lines away from analog input traces to avoid crosstalk. Follow the layout guidelines in the AD4002 datasheet for optimal performance.
Ensure the input signal is within the specified common-mode range. The input overvoltage clamp protects against overvoltage, but do not rely on it for continuous operation. Also, avoid driving the input with a high-impedance source without a buffer, as this can cause settling errors. Use a low-impedance driver or an op-amp buffer.
合規資訊
RoHS compliant per DigiKey listing. Other compliance data not provided.
