AD976CN - 16-Bit 100 kSPS BiCMOS ADC | Analog Devices
料号： AD976CN ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
AD976CN 概述
An ADC is an analog-to-digital converter, a data-acquisition IC that transforms a continuously varying voltage into a numeric code for processing, storage, or control. The AD976 belongs to the successive-approximation ADC hierarchy within integrated circuits and data-conversion semiconductors. At 100 kSPS and 16-bit resolution, it balances conversion speed with precision while preserving a straightforward parallel-output architecture.
The AD976CN's headline parameters are its 16-bit resolution, 100 kSPS conversion throughput, and single 5 V supply operation. According to the Analog Devices AD976 product page, the closely related AD976A reaches 200 kSPS, while the AD976 is specifically identified as the 100 kSPS member. The family also supports external or internal 2.5 V references, a feature that gives designers flexibility in establishing full-scale conversion range.
The BiCMOS implementation combines bipolar and CMOS process characteristics to support precision sampling, comparison, and digital output functions. Maximum power dissipation is listed as 100 mW, while typical power-supply current is specified at 14 mA under stated conditions. The converter uses a parallel data interface, which can simplify connection to older digital buses and dedicated data-acquisition controllers when timing and bus-width constraints are managed correctly.
Typical uses include industrial process monitoring, instrumentation, digital measurement equipment, waveform acquisition, and embedded control systems. Its single-ended input architecture is useful when the source can be referenced and scaled to the selected input range. The internal or external 2.5 V reference choice also makes the ADC suitable for laboratory and industrial systems where traceability or system-level reference partitioning affects measurement accuracy.
When designing around the AD976CN, preserve the manufacturer's recommended analog and digital grounding and decoupling arrangements, and account for acquisition, conversion, and output-update timing at the system level. The 28-lead DIP package is less common in new high-density assemblies, so designers should verify connector availability and assembly process requirements before committing the footprint. Because the verified data identifies AD976CN as obsolete or EOL, lifecycle planning and sourcing risk are significant selection considerations.
This page consolidates the verified manufacturer specifications, lifecycle information, sourcing context, and design implications for AD976CN. It also distinguishes verified facts from parameters that remain unavailable in the supplied data, helping engineers evaluate legacy replacements without assuming unverified electrical or pin-level compatibility.
AD976CN 最大额定值与电气特性
| Converter Type | Successive-approximation A/D converter |
| Architecture | BiCMOS |
| 分辨率 | 16 bit |
| Throughput | 100 kSPS |
| 电源电压 | 5 V |
| Number of Inputs | 1 |
| Input Type | Single-ended |
| Data Interface | Parallel |
| Reference Type | External or internal |
| Internal Reference | 2.5 V |
| Maximum Power Dissipation | 100 mW |
| 工作温度范围 | -35 C to +85 C |
| 封装 | 28-lead ceramic DIP |
| On-Chip Clock | Yes |
AD976CN 28-lead ceramic dip 引脚配置指南
AD976CN（28-lead ceramic dip 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： AD976CN.
请参阅 数据手册 以查看完整引脚配置。
典型应用
AD976CN 适用于 6 应用s: Industrial Process Monitoring, Precision Laboratory Instrumentation, Waveform Acquisition, Digital Control Systems, Sensor Interface Electronics, Embedded Measurement Platforms.
Industrial Process Monitoring
AD976CN fits legacy process-monitoring systems that require 16-bit conversion at up to 100 kSPS from a single-ended sensor signal. Its 100 kSPS throughput is suitable for measured process variables that do not require the 200 kSPS rate of AD976A. Place the converter behind suitable input conditioning, protect the analog input from transients, and use the manufacturer-defined reference and supply decoupling. The obsolete lifecycle status should be addressed with qualified sourcing and a documented replacement plan.
推荐
Precision Laboratory Instrumentation
The AD976CN is appropriate for laboratory measurement equipment where a 16-bit parallel ADC and 100 kSPS conversion rate provide a practical balance between resolution and acquisition speed. Its single-ended input can receive a conditioned and referenced sensor signal, while the selectable external or internal 2.5 V reference supports calibration planning. Because the part is obsolete or EOL, instrument makers should verify calibration stability, reference availability, and lifecycle risk during any long-term platform redesign.
推荐
Waveform Acquisition
AD976CN can serve in legacy waveform-acquisition systems that need 100 kSPS sampling with a 16-bit conversion word. Its parallel interface is helpful when the acquisition controller already expects a parallel ADC, provided the controller also satisfies the converter's timing and handshake requirements. Sampling performance depends on the complete front end, including the acquisition path and reference, rather than converter resolution alone. Verify timing from the manufacturer datasheet before interpreting acquisition bandwidth or record length.
推荐
Digital Control Systems
The AD976CN is useful in embedded control and data-acquisition systems where a measured analog quantity must become a 16-bit digital value. Its single 5 V supply and parallel outputs simplify integration with older digital controllers, while the single-ended input is compatible with conditioned current, voltage, or sensor signals. Designers should keep analog and digital return paths controlled and avoid assuming that converter resolution alone determines control-loop performance. The -35 C to +85 C range supports many industrial environments.
推荐
Sensor Interface Electronics
AD976CN can digitize a conditioned single-ended sensor output in legacy measurement electronics. The 16-bit resolution is useful when the downstream system needs more precision than a lower-resolution ADC, while the 100 kSPS rate supports moderate-speed sampling. Signal-chain design must include sensor amplification, filtering, input-range scaling, and reference selection so the sensor signal does not exceed the converter's permitted input range. The internal or external 2.5 V reference choice also helps define calibration strategy.
推荐
Embedded Measurement Platforms
AD976CN is relevant to embedded measurement platforms already designed around a 16-bit parallel ADC and a legacy 28-lead DIP footprint. The converter's 100 kSPS throughput is suitable for continuous parameter monitoring, and its single-ended input simplifies connection to a referenced analog front end. Integration is not risk-free: exact pin functions, acquisition timing, reference configuration, and output-valid behavior must be checked in the official documentation. For new platforms, evaluate whether a current ADC family can remove obsolete sourcing constraints.
推荐
推荐产品汇总
工程参考数据： AD976CN ——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 |
|---|---|
| Package | 28-lead ceramic DIP |
| Brand | Analog Devices |
| Resolution | 16 bit |
| Throughput | 100 kSPS |
| Supply Voltage | 5 V |
| Input Type | Single-ended |
| Data Interface | Parallel |
| Reference | External or internal 2.5 V |
| Maximum Power Dissipation | 100 mW |
| Operating Temperature | -35 C to +85 C |
关键差异点
- 100 kSPS versus the faster AD976A family member （对比 AD976A)
- Legacy 28-lead ceramic DIP integration （对比 AD976AR)
- Single-ended 16-bit acquisition with selectable reference （对比 AD976)
设计说明
Do not substitute a generic 16-bit ADC for AD976CN without checking the complete footprint and timing. The verified data confirms a 28-lead package, single-ended input, parallel interface, and 100 kSPS throughput, but it does not provide the full pinout or acquisition timing. Treat any proposed replacement as a redesign candidate until pin functions, output timing, reference behavior, and supply requirements are verified against the manufacturer datasheet.
Use the verified 5 V operating context and listed 14 mA typical supply current as design inputs, while separately checking the maximum 100 mW power-dissipation figure against the actual converter activity and reference configuration. Keep supply decoupling close to the device and observe the manufacturer's grounding recommendations. An estimated thermal check can be made with P = VDD × IDD, using the actual operating current rather than assuming the typical value applies to every condition.
Preserve the analog input, reference, and digital output paths as separate as practical in the PCB layout. The AD976CN is a high-resolution data converter, so reference noise, supply variation, and clock or digital-interface coupling can affect measurement quality. Use the package pin arrangement and recommended layout from the manufacturer documentation; exact trace guidance and pin functions are not present in the supplied verified text and should not be invented.
合规信息
The supplied verified data does not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. The device is identified as obsolete or EOL, but lifecycle status is not itself a compliance certification.
