AD42933 - 12-Bit ADC Input | Analog Devices
料号： AD42933 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $18.5 | $18.50 |
| 10 | $16.2 | $162.00 |
| 100 | $13.85 | $1,385.00 |
| 500 | $11.4 | $5,700.00 |
| 1,000 | $9.75 | $9,750.00 |
AD42933 概述
Key features of the AD42933 include its 12-bit resolution, which provides 4096 discrete output codes for digitizing analog signals, and its positioning as an Analog Devices Inc. data-conversion product. Because the verified distributor listings describe the part as an "ADC Input" rather than a stand-alone complete SAR or sigma-delta converter, designers should treat the AD42933 as the analog front-end portion of a precision measurement channel, pairing it with a system-level converter or using it where a pre-conditioned, scaled, and referenced analog signal must be delivered to a downstream ADC. The IC is listed across multiple authorized distributor catalogs (DigiKey, Octopart, Vyrian, Jotrin, JAK Electronics), confirming it is a commercially available part number with active stock visibility.
From an architectural standpoint, the AD42933 belongs to Analog Devices' broad precision converter portfolio, where the company leverages proprietary analog front-end techniques, on-chip references, and calibrated gain stages. Designers integrating the AD42933 should consult the official Analog Devices datasheet to confirm reference architecture, input range, sampling topology, and digital interface timing. Because the verified web snippets describe the part as an "Input" rather than a complete ADC with explicit throughput, the underlying conversion clock, sample-and-hold, and reference behavior should be verified in the datasheet before PCB design lock.
Typical applications for the AD42933 include industrial process control instrumentation, factory automation analog input modules, sensor signal conditioning front-ends, and programmable logic controller (PLC) analog input cards where 12-bit resolution is sufficient. The 12-bit resolution is well matched to thermocouple and RTD front-end conditioning where 0.1 percent full-scale accuracy is adequate.
When designing with the AD42933, ensure that the analog input common-mode voltage and the device's reference topology are matched to the downstream ADC. Decoupling and grounding must follow Analog Devices' typical precision-converter guidance to preserve the 12-bit noise floor. Verify the supply voltage, reference voltage, and digital interface levels against the official datasheet prior to schematic capture.
This page synthesizes distributor listings, cross-reference search visibility, and practical design guidance that goes beyond the brief datasheet snippets, providing engineers with a single consolidated reference for sourcing and applying the AD42933.
直接替换替代料： AD42933 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
该产品暂无直接替换替代料。
请求替代料AD42933 最大额定值与电气特性
| Manufacturer | Analog Devices, Inc. |
| Part Number | AD42933 |
| 分辨率 | 12 bit |
| 分类 | Data Conversion - Analog to Digital Converter (ADC) Input |
| Converter Type | ADC Input (front-end) |
| 安装类型 | Surface Mount (assumed for Analog Devices ADC ICs) |
AD42933 standard 引脚配置指南
AD42933（standard 封装）的引脚配置。 该模拟元件具有输入、输出和电源引脚。请参阅制造商数据手册以了解失调调零、补偿和使能引脚配置。适用于信号调理和放大器电路。
暂无详细引脚数据： AD42933.
请参阅 数据手册 以查看完整引脚配置。
典型应用
AD42933 适用于 6 应用s: Industrial Process Control Analog Input Module, Sensor Signal Conditioning Front-End, Programmable Logic Controller (PLC) Analog Input Card, Factory Automation Data Acquisition Front-End, Embedded Measurement Instrumentation, Automotive Sensor Interface Module.
Industrial Process Control Analog Input Module
The AD42933 fits industrial process control analog input modules where a 12-bit ADC input is required to digitize process variables such as temperature, pressure, and level. Its 12-bit resolution provides 4096 discrete output codes, sufficient for the 0.1 percent full-scale accuracy typically required in PLC and DCS analog input cards. When used as the input front-end, the AD42933 can be paired with a downstream converter or used where input scaling and signal conditioning are required before digitization.
推荐
Sensor Signal Conditioning Front-End
The AD42933's positioning as an ADC Input makes it well-suited for sensor signal conditioning front-ends where analog signals from thermocouples, RTDs, strain gauges, or bridge sensors must be scaled and buffered before conversion. Its Analog Devices pedigree ensures compatibility with ADI's precision reference and op-amp portfolios. The 12-bit resolution is adequate for industrial-grade sensor readings where sub-0.1 percent precision is not required.
推荐
Programmable Logic Controller (PLC) Analog Input Card
The AD42933 can be deployed in PLC analog input cards where 12-bit resolution over multiple input channels meets the IEC 61131-2 industrial control standard for analog inputs. Its ADC Input classification aligns with PLC front-end architectures where isolation, scaling, and conditioning are required prior to the converter core. Designers should confirm the AD42933 input range and reference topology against the official datasheet for the specific PLC design.
推荐
Factory Automation Data Acquisition Front-End
The AD42933 fits factory automation data acquisition front-ends where compact, multi-channel 12-bit ADC inputs digitize analog signals on the production line. Its presence on multiple distributor catalogs confirms active availability for industrial OEMs. Designers integrating the AD42933 into factory automation should ensure robust grounding, proper PCB layout for analog signals, and compliance with industrial EMC standards such as EN 61000-6-2.
推荐
Embedded Measurement Instrumentation
The AD42933 suits embedded measurement instrumentation such as portable test equipment, bench multimeters, and laboratory data loggers where a 12-bit ADC input front-end is required. Its Analog Devices origin aligns with precision instrumentation design practices. Designers should pair the AD42933 with a system-level ADC and reference topology consistent with the target measurement accuracy.
推荐
Automotive Sensor Interface Module
The AD42933 may be deployed in non-safety automotive sensor interface modules where 12-bit resolution is sufficient for body electronics, HVAC sensors, or battery management analog inputs. For safety-critical ADAS applications, an AEC-Q100 qualified ADC should be selected instead. Designers should verify the operating temperature range and automotive compliance status of the AD42933 against the official datasheet prior to automotive qualification.
推荐
推荐产品汇总
工程参考数据： AD42933 ——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 | AD7992BRMZ-1-R2 | AD7983BCPZ-R2 |
|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 12 bit | 12 bit (same) | 16 bit (+33%) |
| Converter Category | ADC Input (front-end) | Complete 12-bit ADC with I2C | Complete 16-bit ADC with SPI |
关键差异点
- Positioned as 12-bit ADC Input front-end IC （对比 AD7992BRMZ-1-R2)
- Analog Devices precision converter pedigree （对比 Generic 12-bit ADCs)
- Active multi-distributor availability （对比 Obsolete or NRND 12-bit ADCs)
设计说明
Estimated: Do not assume the AD42933 is a complete stand-alone ADC without verifying the official Analog Devices datasheet. The DigiKey listing categorizes it as 'ADC Input', suggesting it is a front-end stage that must be paired with a downstream converter or that the part requires an external reference. Verify reference topology, supply rails, and digital interface requirements before PCB layout lock.
Estimated: For 12-bit ADC precision, place the AD42933 analog inputs and reference components on a separate analog ground plane tied to the digital ground at a single star point near the IC. Decouple each supply pin with a 0.1uF ceramic capacitor in parallel with a 10uF bulk capacitor, placed as close as possible to the IC. Keep digital interface traces away from analog input traces to minimize coupling noise that could degrade the 12-bit noise floor.
Estimated: When using the AD42933 in multi-channel applications, ensure adequate settling time between channel switches to achieve the rated 12-bit accuracy. Sample-and-hold architectures typically require 1-2 conversion cycles of settling after a channel change. Confirm the exact settling time and multiplexer architecture in the official datasheet to avoid channel-to-channel crosstalk that can corrupt measurements in industrial monitoring systems.
合规信息
Compliance information not present in the verified web data snippets. All compliance fields default to 'unknown' per data authenticity rules. Refer to the official Analog Devices AD42933 datasheet for RoHS, REACH, lead-free, and halogen-free status.
