AD4086BCPZ - 14-Bit 40 MSPS SAR ADC | Analog Devices
料号： AD4086BCPZ ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $28.45 | $28.45 |
| 10 | $26.5 | $265.00 |
| 100 | $24 | $2,400.00 |
| 500 | $21.5 | $10,750.00 |
| 1,000 | $19 | $19,000.00 |
AD4086BCPZ 概述
What is a SAR ADC? A SAR ADC converts an analog input into a digital code by performing a binary search across a capacitor DAC under control of a successive-approximation register. SAR ADCs are favored for high-speed, low-power precision data acquisition where low latency and a single-cycle sample-and-hold are important. Within the ADC hierarchy, SAR converters sit between delta-sigma devices and pipeline converters in the speed-versus-resolution trade-off.
The AD4086's 14-bit resolution and 40 MSPS throughput make it suitable for applications that require high dynamic range at speed. The integrated 16K FIFO reduces host-side interrupt loading, while the internal LDOs and reference buffer lower external BOM count. Low noise and low power design support dense, channel-count systems.
Because critical supply and reference decoupling capacitors are integrated inside the package, PCB layout is simplified and parasitic inductance from external decoupling is minimized. The LDOs generate clean core and digital rails, reducing the need for multiple external regulators. The low drift reference buffer maintains ADC accuracy across temperature.
Typical applications include medical imaging front ends, high-speed data acquisition, communications receivers, industrial instrumentation, and portable test equipment. The 40 MSPS rate can address IF/baseband sampling in communications, while low power supports battery-operated units.
When designing with the AD4086, pay attention to the input drive amplifier settling time and the reference source impedance. The integrated 16K FIFO should be used to burst-read conversion results to minimize digital host overhead. Ensure the input common-mode range matches the driver output for optimum SNR/SFDR.
直接替换替代料： AD4086BCPZ ——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： AD4086BCPZ （相同外形与封装尺寸） ——差异在于 Resolution, Input Type, Package, Integrated Reference Buffer, Lifecycle Status.
快速对比工具——选择替代料号进行并排对比：
AD4086BCPZ-RL
✅ 直接替换📋 参考替代料（不在目录中）
AD4086BCPZ-R2
✅ 直接替换📋 参考替代料（不在目录中）
AD4086BCPZ 最大额定值与电气特性
| 分辨率 | 14 bits |
| 采样率 | 40 MSPS |
| Architecture | SAR |
| Number of Inputs | 1 |
| Input Type | Single-ended |
| Data Interface | SPI |
| Reference Type | External, Internal |
| 电源电压 | 1.8 V (core), 3.3 V (digital I/O) |
| 封装 | LFCSP |
| 工作温度范围 | -40°C to +125°C |
| Integrated FIFO | 16K results |
| Integrated LDOs | Yes (core and digital interface) |
| Integrated Reference Buffer | Yes (low drift) |
| Integrated Decoupling Capacitors | Yes (supply and reference) |
| RoHS | Compliant |
AD4086BCPZ 引脚配置
| 引脚 1 | AVDD — Analog supply voltage (1.8V) |
| 引脚 2 | AVSS — Analog ground |
| 引脚 3 | VIN — Analog input |
| 引脚 4 | REF — Reference input/output |
| 引脚 5 | REFGND — Reference ground |
| 引脚 6 | DVDD — Digital supply voltage (3.3V) |
| 引脚 7 | DVSS — Digital ground |
| 引脚 8 | SCLK — Serial clock input |
| 引脚 9 | SDI — Serial data input |
| 引脚 10 | SDO — Serial data output |
| 引脚 11 | CS — Chip select (active low) |
| 引脚 12 | BUSY — Busy indicator output |
典型应用
AD4086BCPZ 适用于 6 应用s: Medical Imaging Front End, High-Speed Data Acquisition, Communications Receivers, Industrial Instrumentation, Portable Test Equipment, Communications Infrastructure.
Medical Imaging Front End
The AD4086BCPZ's 14-bit resolution and 40 MSPS sampling rate enable high dynamic range in medical imaging systems such as ultrasound and CT scanners. Its low noise and low power design support dense channel arrays, while the integrated FIFO reduces host processor loading during continuous data acquisition. The internal LDOs and reference buffer simplify power and reference design, ensuring consistent performance across temperature. The compact LFCSP package fits space-constrained imaging modules, and the SPI interface allows easy integration with FPGAs or DSPs.
推荐
High-Speed Data Acquisition
In high-speed data acquisition systems, the AD4086BCPZ provides 14-bit resolution at 40 MSPS, capturing fast transients with high fidelity. The integrated 16K FIFO allows burst-mode data transfer, reducing host interrupt overhead and enabling efficient data streaming. The low drift reference buffer ensures accurate conversions over temperature, critical for industrial and scientific instrumentation. The LFCSP package and integrated decoupling capacitors simplify PCB layout, reducing design time and board space. The SPI interface supports daisy-chaining for multi-channel systems.
推荐
Communications Receivers
The AD4086BCPZ is suitable for IF/baseband sampling in communications receivers, offering 40 MSPS sampling to digitize intermediate frequencies with sufficient bandwidth. Its low noise performance preserves signal integrity, while the integrated LDOs provide clean supply rails for the ADC core and digital interface, reducing external filtering. The 16K FIFO helps manage data flow in bursty communication protocols. The small LFCSP package is ideal for compact radio modules, and the SPI interface simplifies connection to baseband processors.
推荐
Industrial Instrumentation
For industrial instrumentation, the AD4086BCPZ offers high-speed, high-resolution conversion for applications like vibration analysis and power monitoring. Its wide operating temperature range (-40°C to +125°C) ensures reliability in harsh environments. The integrated reference buffer and LDOs reduce external component count, lowering BOM cost and improving system reliability. The SPI interface allows easy integration with industrial microcontrollers, and the 16K FIFO supports efficient data logging. The LFCSP package is robust for industrial PCBs.
推荐
Portable Test Equipment
The AD4086BCPZ's low power consumption makes it ideal for battery-operated portable test equipment such as oscilloscopes and spectrum analyzers. The integrated LDOs and reference buffer minimize external power components, saving board space and extending battery life. The 40 MSPS sampling rate enables real-time signal analysis, while the 16K FIFO reduces processor wake-ups, further saving power. The compact LFCSP package fits handheld devices, and the SPI interface supports low-pin-count microcontrollers.
推荐
Communications Infrastructure
In communications infrastructure, the AD4086BCPZ provides high-speed digitization for base stations and software-defined radios. Its 14-bit resolution and 40 MSPS sampling rate support wideband signal processing, while the integrated FIFO and LDOs simplify system design. The low noise performance ensures high SNR for weak signal detection. The LFCSP package is suitable for high-density line cards, and the SPI interface allows seamless integration with FPGAs. The device's active lifecycle status ensures long-term availability for infrastructure projects.
推荐
推荐产品汇总
工程参考数据： AD4086BCPZ ——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 | AD4086BCPZ-RL | AD4086BCPZ-R2 | AD4086BBCZ | AD4086BBCZ-RL7 | AD7685BRMZ |
|---|---|---|---|---|---|---|
| Package | LFCSP | LFCSP | LFCSP | 49-CSPBGA (5x5) | 49-CSPBGA (5x5) | MSOP-10 |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 14 bits | 14 bits | 14 bits | 14 bits | 14 bits | 16 bits |
| Sampling Rate | 40 MSPS | 40 MSPS | 40 MSPS | 40 MSPS | 40 MSPS | 250 kSPS |
| Integrated FIFO | 16K | 16K | 16K | 16K | 16K | None |
| Integrated LDOs | Yes | Yes | Yes | Yes | Yes | No |
| Integrated Reference Buffer | Yes | Yes | Yes | Yes | Yes | No |
| Data Interface | SPI | SPI | SPI | SPI | SPI | SPI |
关键差异点
- Integrated 16K FIFO reduces host processor loading （对比 AD7685BRMZ)
- Integrated LDOs and reference buffer simplify power design （对比 AD7685BRMZ)
- Higher sampling rate for high-speed applications （对比 AD7685BRMZ)
设计说明
The AD4086BCPZ integrates LDO regulators for the ADC core and digital interface, simplifying power supply design. Ensure the external supply voltage is within the recommended range (1.8V for AVDD, 3.3V for DVDD) and provide adequate decoupling on the supply pins. The internal LDOs reduce external component count, but proper PCB layout with low-inductance paths is still essential for optimal performance.
The AD4086BCPZ integrates critical supply and reference decoupling capacitors inside the package, which minimizes parasitic inductance and simplifies PCB layout. However, it is still important to place external decoupling capacitors close to the power pins to handle transient currents. Use a solid ground plane and avoid routing digital signals near the analog input to maintain signal integrity.
Ensure the input drive amplifier settling time is adequate for 40 MSPS sampling to avoid conversion errors. The reference source impedance should be low to maintain accuracy. Use the integrated 16K FIFO to burst-read conversion results, reducing host overhead. Verify the input common-mode range matches the driver output for optimum SNR/SFDR.
合规信息
RoHS compliance is indicated by the 'Z' suffix in the part number. Other compliance details not specified in the provided data.
