AD4002BRUZ - 18-Bit SAR ADC, 2 MSPS | Analog Devices
料号： AD4002BRUZ ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.25 | $112.50 |
| 100 | $10 | $1,000.00 |
| 500 | $9 | $4,500.00 |
| 1,000 | $8.5 | $8,500.00 |
AD4002BRUZ 概述
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.
直接替换替代料： AD4002BRUZ ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： AD4002BRUZ （相同外形与封装尺寸） ——差异在于 Package, Resolution, Supply Voltage, Input Type, Interface.
快速对比工具——选择替代料号进行并排对比：
AD4002BRUZ-RL7
✅ 直接替换📋 参考替代料（不在目录中）
AD4000BRUZ
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$8.1 / 个
查看数据手册 →AD4006BRUZ
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$23 / 个
查看数据手册 →AD4001BRUZ
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$6.6818 / 个
查看数据手册 →AD7091R-5BRUZ
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$3.1 / 个
查看数据手册 →AD4002BRUZ 最大额定值与电气特性
| 分辨率 | 18-bit |
| 采样率 | 2 MSPS |
| Input Type | Single-ended |
| 接口 | SPI |
| 电源电压 | 1.8V to 5V |
| 基准电压 | VREF (external) |
| 封装 | 16-TSSOP (0.173", 4.40mm Width) |
| 工作温度 | -40°C to +125°C |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
| Number of Channels | 1 |
AD4002BRUZ 引脚配置
| 引脚 1 | VDD — Power supply |
| 引脚 2 | GND — Ground |
| 引脚 3 | VREF — Reference voltage input |
| 引脚 4 | IN+ — Positive analog input |
| 引脚 5 | IN- — Negative analog input |
| 引脚 6 | SCK — Serial clock input |
| 引脚 7 | SDI — Serial data input |
| 引脚 8 | SDO — Serial data output |
| 引脚 9 | CNV — Convert input |
| 引脚 10 | BUSY — Busy output |
| 引脚 11 | GND — Ground |
| 引脚 12 | VDD — Power supply |
典型应用
AD4002BRUZ 适用于 6 应用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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
推荐产品汇总
工程参考数据： AD4002BRUZ ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | 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 |
关键差异点
- 18-bit resolution at 2 MSPS （对比 AD4000BRUZ)
- Easy Drive technology （对比 AD4006BRUZ)
- Input overvoltage clamp （对比 AD4001BRUZ)
设计说明
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.
合规信息
RoHS compliant per DigiKey listing. Other compliance data not provided.
