AD4008BRUZ - 16-Bit 500kSPS SAR ADC | Analog Devices
料号： AD4008BRUZ ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $5.83 | $5.83 |
| 10 | $5.25 | $52.50 |
| 100 | $4.67 | $467.00 |
| 500 | $4.2 | $2,100.00 |
| 1,000 | $3.73 | $3,730.00 |
AD4008BRUZ 概述
A SAR ADC is a type of analog-to-digital converter that uses a binary search algorithm to convert an analog input to a digital output. It is known for its high speed, low power consumption, and excellent accuracy, making it ideal for applications such as data acquisition, industrial process control, and medical instrumentation. The AD4008BRUZ is part of the AD4000/AD4004/AD4008 family, which incorporates Easy Drive features like high-Z mode and an extended acquisition phase to simplify the driving amplifier requirements.
Key features of the AD4008BRUZ include a 16-bit resolution, 500 kSPS sampling rate, and a signal-to-noise ratio (SNR) of 94 dB. It also offers a low power consumption of 3.5 mW at 500 kSPS, making it suitable for battery-powered and portable devices. The device includes a high-Z mode that reduces the input current, allowing direct connection to sensors without an external buffer. Additionally, the extended acquisition phase enables the use of lower bandwidth amplifiers, reducing system cost and complexity.
The AD4008BRUZ uses a charge redistribution SAR architecture with a precision internal reference buffer. It supports both SPI and daisy-chain modes for easy interfacing with microcontrollers and DSPs. The device operates over a temperature range of -40°C to +125°C, ensuring reliable performance in harsh environments. The TSSOP package provides a compact footprint while maintaining excellent thermal performance.
Typical applications include data acquisition systems, industrial automation, medical imaging, and battery-powered instrumentation. The high accuracy and low power consumption make it ideal for portable and remote sensing applications. The Easy Drive features simplify the analog front-end design, reducing component count and board space.
When designing with the AD4008BRUZ, ensure that the reference voltage is stable and well-decoupled. The device requires a 1.8V analog supply and a separate digital supply for the interface. Proper layout techniques, such as short traces and ground planes, are essential to achieve the specified performance.
直接替换替代料： AD4008BRUZ ——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： AD4008BRUZ （相同外形与封装尺寸） ——差异在于 Input Type, Interface, Package, Resolution, Sampling Rate.
快速对比工具——选择替代料号进行并排对比：
AD4000BRUZ
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$8.1 / 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 →AD4008BRUZ 最大额定值与电气特性
| 分辨率 | 16-bit |
| 采样率 | 500 kSPS |
| Input Type | Pseudo-differential |
| Number of Channels | 1 |
| 接口 | SPI, daisy-chain |
| 电源电压 | 1.8 V |
| Power Consumption | 3.5 mW at 500 kSPS |
| SNR | 94 dB |
| THD | -110 dB |
| INL | ±0.5 LSB |
| DNL | ±0.5 LSB |
| 工作温度 | -40°C to +125°C |
| 封装 | 16-lead TSSOP |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
AD4008BRUZ 引脚配置
| 引脚 1 | VIN — Analog input |
| 引脚 2 | GND — Ground |
| 引脚 3 | VREF — Reference voltage input |
| 引脚 4 | VDD — Power supply |
| 引脚 5 | VIO — Digital interface supply |
| 引脚 6 | SCK — Serial clock |
| 引脚 7 | SDI — Serial data input |
| 引脚 8 | SDO — Serial data output |
| 引脚 9 | CNV — Convert input |
| 引脚 10 | GND — Ground |
| 引脚 11 | GND — Ground |
| 引脚 12 | GND — Ground |
| 引脚 13 | GND — Ground |
| 引脚 14 | GND — Ground |
| 引脚 15 | GND — Ground |
| 引脚 16 | GND — Ground |
典型应用
AD4008BRUZ 适用于 6 应用s: Data Acquisition Systems, Industrial Process Control, Medical Instrumentation, Battery-Powered Instrumentation, Test and Measurement Equipment, Automotive Electronics.
Data Acquisition Systems
The AD4008BRUZ is ideal for data acquisition systems requiring high accuracy and speed. Its 16-bit resolution and 500 kSPS sampling rate enable precise capture of analog signals. The low power consumption of 3.5 mW makes it suitable for portable and battery-powered data loggers. The Easy Drive features simplify the analog front-end, reducing component count and board space. The SPI interface allows easy integration with microcontrollers and DSPs.
推荐
Industrial Process Control
In industrial process control, the AD4008BRUZ provides accurate and reliable conversion of sensor signals. Its wide operating temperature range of -40°C to +125°C ensures performance in harsh environments. The pseudo-differential input rejects common-mode noise, improving measurement accuracy. The device's low power consumption reduces heat generation, enhancing system reliability. The SPI interface enables seamless integration with industrial controllers.
推荐
Medical Instrumentation
The AD4008BRUZ is well-suited for medical instrumentation such as patient monitoring and diagnostic equipment. Its high SNR of 94 dB ensures accurate signal acquisition, critical for medical measurements. The low power consumption extends battery life in portable devices. The compact TSSOP package saves board space, enabling miniaturized designs. The device's high accuracy and reliability meet the stringent requirements of medical applications.
推荐
Battery-Powered Instrumentation
The AD4008BRUZ is perfect for battery-powered instrumentation due to its low power consumption of 3.5 mW. The single 1.8V supply simplifies power management. The high-Z mode reduces input current, allowing direct sensor connection without external buffers, saving power and space. The device's high accuracy ensures reliable measurements in portable devices. The SPI interface supports low-power sleep modes for further energy savings.
推荐
Test and Measurement Equipment
The AD4008BRUZ is ideal for test and measurement equipment such as digital multimeters and oscilloscopes. Its 16-bit resolution and 500 kSPS sampling rate provide high-speed, accurate measurements. The low THD of -110 dB ensures signal fidelity. The device's small package and low power consumption enable compact, portable test instruments. The SPI interface allows easy integration with measurement processors.
推荐
Automotive Electronics
The AD4008BRUZ is suitable for automotive electronics such as battery management systems and motor control. Its wide temperature range and high reliability meet automotive standards. The pseudo-differential input rejects noise from automotive electrical systems. The low power consumption reduces heat in enclosed environments. The SPI interface supports daisy-chaining for multiple ADC channels, simplifying wiring.
推荐
推荐产品汇总
工程参考数据： AD4008BRUZ ——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 | AD4008BRMZ | AD4008BCPZ-RL7 | AD4000BRUZ |
|---|---|---|---|---|
| Package | 16-lead TSSOP | 10-lead MSOP | 10-lead LFCSP-WD (3x3) | 16-lead TSSOP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 16-bit | 16-bit | 16-bit | 16-bit |
| Sampling Rate | 500 kSPS | 500 kSPS | 500 kSPS | 400 kSPS |
| Input Type | Pseudo-differential | Pseudo-differential | Pseudo-differential | Pseudo-differential |
| Supply Voltage | 1.8 V | 1.8 V | 1.8 V | 1.8 V |
| Power Consumption | 3.5 mW | 3.5 mW | 3.5 mW | 3.5 mW |
| SNR | 94 dB | 94 dB | 94 dB | 94 dB |
关键差异点
- Higher sampling rate than AD4000BRUZ （对比 AD4000BRUZ)
- Lower power consumption than AD7690BRMZ （对比 AD7690BRMZ)
- Easy Drive features （对比 AD7091R-5BRUZ)
设计说明
The AD4008BRUZ requires a clean 1.8V analog supply (VDD) and a separate digital supply (VIO) for the interface. Use low-dropout regulators with low output noise to avoid degrading the ADC's SNR. Decouple each supply pin with a 0.1uF ceramic capacitor placed as close as possible to the pin, and a 10uF bulk capacitor for low-frequency filtering.
For optimal performance, use a solid ground plane under the ADC and keep analog and digital grounds separate, connecting them at a single point. Route the analog input (VIN) away from digital traces to minimize coupling. Use short, direct traces for the SPI interface (SCK, SDI, SDO, CNV) and add series resistors (e.g., 33 ohm) to reduce ringing.
Ensure the reference voltage (VREF) is stable and well-decoupled. Use a precision reference like the ADR4520 and place a 10uF capacitor at the VREF pin. Avoid driving the analog input with a high-impedance source; use a buffer amplifier if necessary. The high-Z mode can help, but verify the source impedance is within the specified range.
合规信息
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified.
