AD4680BCPZ - 16-Bit 1MSPS Dual SAR ADC | Analog Devices
料号： AD4680BCPZ ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $33.67 | $33.67 |
| 10 | $31.5 | $315.00 |
| 100 | $28.9 | $2,890.00 |
| 500 | $26.4 | $13,200.00 |
| 1,000 | $24.1 | $24,100.00 |
AD4680BCPZ 概述
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 to a digital output. It compares the input voltage against a reference voltage using a capacitive digital-to-analog converter (DAC) and a comparator, iterating from the most significant bit (MSB) to the least significant bit (LSB). SAR ADCs are known for their high speed, low power, and excellent accuracy, making them ideal for applications such as data acquisition systems, motor control, and medical instrumentation. They are a subset of the broader ADC family, which also includes delta-sigma and pipeline converters.
Key features of the AD4680BCPZ include dual simultaneous sampling, which allows two channels to be sampled at the same instant, preserving phase information between signals. The device also offers a high-speed serial interface (SPI) for easy connection to microcontrollers and DSPs. With a 16-bit resolution and 1 MSPS throughput, it provides high precision and fast conversion rates. The low power consumption, typically 15 mW at 1 MSPS, makes it suitable for battery-powered and portable equipment.
The AD4680BCPZ uses a charge redistribution architecture with an internal reference buffer, ensuring accurate conversions over temperature. It includes a flexible power-down mode to reduce power consumption during idle periods. The device also features a temperature range of -40°C to +125°C, suitable for industrial environments. The LFCSP package offers excellent thermal performance and a small footprint, enabling high-density PCB layouts.
Typical applications include motor control, where dual simultaneous sampling is essential for accurate current and voltage measurement, and data acquisition systems for industrial automation. The device is also used in medical devices, such as patient monitoring systems, where precision and low power are critical. Additionally, it is suitable for power monitoring and instrumentation.
When designing with the AD4680BCPZ, ensure that the reference voltage is stable and well-decoupled. Use a low-noise reference, such as the ADR4520, to achieve optimal performance. The SPI interface should be isolated if the ADC is placed near noisy components. Proper PCB layout, including a solid ground plane and short traces, is essential to minimize noise and achieve the specified performance.
直接替换替代料： AD4680BCPZ ——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： AD4680BCPZ （相同外形与封装尺寸） ——差异在于 Resolution, Sampling Rate, Interface, Package, Operating Temperature.
快速对比工具——选择替代料号进行并排对比：
AD4681BCPZ
✅ 直接替换✓ 有现货
$8.1 / 个
查看数据手册 →AD7380BCPZ
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$7.89 / 个
查看数据手册 →AD7381BCPZ
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$8.1 / 个
查看数据手册 →AD4680BCPZ 最大额定值与电气特性
| 分辨率 | 16 Bit |
| Number of Inputs | 2 |
| Input Type | Differential |
| 采样率 | 1 MSPS |
| Architecture | SAR |
| 电源电压 | 3.0 V to 3.6 V |
| 接口 | SPI |
| 封装 | 16-LFCSP (3x3 mm) |
| 工作温度 | -40°C to +125°C |
| Power Dissipation | 15 mW (typical) |
| 基准电压 | 2.5 V (internal) |
| SNR | 92 dB (typical) |
| INL | ±1 LSB (typical) |
| DNL | ±1 LSB (typical) |
| RoHS | Compliant |
AD4680BCPZ 引脚配置
| 引脚 1 | VIN1+ — Positive differential input channel 1 |
| 引脚 2 | VIN1- — Negative differential input channel 1 |
| 引脚 3 | VIN2+ — Positive differential input channel 2 |
| 引脚 4 | VIN2- — Negative differential input channel 2 |
| 引脚 5 | GND — Ground |
| 引脚 6 | VREF — Reference voltage input/output |
| 引脚 7 | AVDD — Analog supply voltage |
| 引脚 8 | DVDD — Digital supply voltage |
| 引脚 9 | SCLK — Serial clock input |
| 引脚 10 | SDI — Serial data input |
| 引脚 11 | SDO — Serial data output |
| 引脚 12 | CS — Chip select (active low) |
| 引脚 13 | BUSY — Busy indicator output |
| 引脚 14 | RESET — Reset input |
| 引脚 15 | PD — Power-down input |
| 引脚 16 | EP — Exposed pad (ground) |
典型应用
AD4680BCPZ 适用于 6 应用s: Motor Control, Data Acquisition Systems, Medical Instrumentation, Power Monitoring, Industrial Automation, Test and Measurement.
Motor Control
The AD4680BCPZ is ideal for motor control applications due to its dual simultaneous sampling capability, which allows accurate measurement of phase currents and voltages at the same instant. With 16-bit resolution and 1 MSPS sampling rate, it provides high precision for current sensing loops. The differential inputs reject common-mode noise from motor drives, ensuring clean signals. The low power consumption of 15 mW is beneficial for compact drives. The SPI interface simplifies connection to microcontrollers. The wide temperature range of -40°C to +125°C ensures reliable operation in industrial environments. The small LFCSP package saves PCB space, enabling high-density designs.
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Data Acquisition Systems
The AD4680BCPZ is well-suited for data acquisition systems requiring high-speed, high-resolution conversion of multiple channels. Its dual simultaneous sampling ensures phase alignment between channels, which is critical for accurate power analysis and vibration monitoring. The 16-bit resolution and 1 MSPS throughput allow capturing fast transients. The SPI interface supports daisy-chaining for multi-device systems. The low power consumption makes it suitable for portable data loggers. The device's small footprint enables compact designs. The internal reference simplifies the BOM, reducing system cost. The wide operating temperature range supports outdoor and industrial applications.
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Medical Instrumentation
In medical instrumentation, the AD4680BCPZ provides high-precision conversion for patient monitoring and diagnostic equipment. Its 16-bit resolution ensures accurate measurement of physiological signals. The dual simultaneous sampling is useful for applications like ECG, where multiple leads must be sampled simultaneously. The low power consumption extends battery life in portable devices. The small package is ideal for wearable monitors. The device's high SNR of 92 dB ensures clean signal acquisition. The SPI interface allows easy integration with medical-grade microcontrollers. The wide temperature range ensures reliable operation in clinical environments.
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Power Monitoring
The AD4680BCPZ is used in power monitoring systems to measure voltage and current with high accuracy. Its dual simultaneous sampling ensures that voltage and current are sampled at the same instant, enabling accurate power calculation. The 16-bit resolution provides fine granularity for detecting small changes in power consumption. The differential inputs reject noise from power lines. The device operates from a 3.3V supply, making it compatible with common power monitoring ICs. The SPI interface allows easy connection to energy metering processors. The low power consumption is beneficial for always-on monitoring. The compact package fits into smart meters and industrial power analyzers.
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Industrial Automation
The AD4680BCPZ is suitable for industrial automation applications such as process control and machine vision. Its high speed and resolution enable precise measurement of analog sensors. The dual simultaneous sampling is useful for applications requiring synchronized data from two sensors. The device's robust design operates over a wide temperature range, making it suitable for harsh factory environments. The SPI interface supports high-speed data transfer to PLCs and industrial controllers. The low power consumption reduces heat generation in enclosed cabinets. The small package allows integration into compact sensor modules. The device's excellent linearity ensures accurate control loops.
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Test and Measurement
In test and measurement equipment, the AD4680BCPZ provides high-speed, high-resolution conversion for oscilloscopes, spectrum analyzers, and data loggers. Its 1 MSPS sampling rate allows capturing fast signals, while the 16-bit resolution ensures accurate amplitude measurement. The dual simultaneous sampling is useful for comparing two signals in phase. The device's low noise and high SNR make it suitable for precision measurements. The SPI interface allows easy integration with FPGAs and DSPs. The small package enables compact instrument designs. The wide temperature range ensures stable performance in benchtop and portable instruments.
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推荐产品汇总
工程参考数据： AD4680BCPZ ——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 | AD4681BCPZ | AD7380BCPZ | AD7381BCPZ |
|---|---|---|---|---|
| Package | 16-LFCSP (3x3 mm) | 16-LFCSP (3x3 mm) | 16-LFCSP (3x3 mm) | 16-LFCSP (3x3 mm) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 16 Bit | 16 Bit | 16 Bit | 16 Bit |
| Sampling Rate | 1 MSPS | 500 kSPS | 4 MSPS | 2 MSPS |
| Number of Inputs | 2 | 2 | 2 | 2 |
| Input Type | Differential | Differential | Differential | Differential |
| Supply Voltage | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V |
| Interface | SPI | SPI | SPI | SPI |
关键差异点
- Dual simultaneous sampling （对比 AD4681BCPZ)
- Higher sampling rate （对比 AD4681BCPZ)
- Pin-compatible with AD7380/AD7381 （对比 AD7380BCPZ)
设计说明
The AD4680BCPZ operates from a 3.0V to 3.6V supply. Use a low-noise LDO regulator, such as the ADP151, to provide a clean AVDD. Decouple AVDD and DVDD with 0.1uF and 10uF capacitors placed close to the pins. The reference voltage should be decoupled with a 10uF capacitor to ensure stability.
For optimal performance, use a solid ground plane and minimize trace lengths for analog inputs. Keep digital signals away from analog inputs to reduce coupling. Use a star-ground topology to avoid ground loops. The exposed pad should be soldered to the ground plane for thermal and electrical performance.
Ensure the reference voltage is stable and within the specified range. Avoid driving the reference with a high-impedance source. The SPI interface should be operated within the specified timing requirements. Do not exceed the absolute maximum ratings for supply voltage and input pins.
合规信息
RoHS compliant per distributor data. Other compliance information not specified in the provided data.