Analog Devices
AD976AAR - 16-Bit 200 kSPS ADC | Analog Devices
料号： AD976AAR ✓ 量产中
5 V Vdss
28-lead SOIC Package
On-chip clock Speed
最小起订量： 1 |
AD976AAR 概述
Analog Devices AD976AAR is a high-speed, low-power, 16-bit successive-approximation analog-to-digital converter with a 200 kSPS throughput rate, a single 5 V supply, and a 28-lead SOIC package. The converter uses a switched-capacitor sampling architecture, an internal 2.5 V reference, an on-chip clock, and a high-speed parallel output interface. It is designed for precision signal acquisition where 16-bit resolution and moderate conversion speed are required.
An ADC is an analog-to-digital converter, a semiconductor that samples a continuously varying voltage and represents it as a numerical value. The AD976AAR belongs to the successive-approximation ADC family and uses switched-capacitor sampling. This combination places it within the hierarchy of data-converter ICs, analog-to-digital converters, signal-chain semiconductors, and electronic components used in industrial measurement and control systems.
The AD976A reaches 200 kSPS, while the related AD976 operates at 100 kSPS. Both provide 16-bit conversion resolution, operation from one 5 V supply, selectable external or internal reference options, and a parallel interface. The internal 2.5 V reference provides a convenient starting point for single-supply designs, while external-reference selection can support systems that require a shared precision reference.
The AD976 family is fabricated using Analog Devices' proprietary BiCMOS process, combining high-performance bipolar devices with CMOS transistors. A switched-capacitor ADC uses an internal sampling network to hold the input voltage during conversion. The parallel interface exposes the converted digital result directly across device pins, reducing serial-interface overhead and supporting designs where the destination device can latch data in parallel.
Typical uses include industrial process monitoring, instrumentation, waveform acquisition, communications equipment, control systems, and embedded measurement platforms. The 28-lead SOIC package is suitable for conventional surface-mount PCB assembly and provides enough connections for analog input handling, reference selection, digital data output, control signals, and power delivery.
Before layout is finalized, use the Analog Devices AD976A datasheet to assign every signal, identify supply and ground pins, and confirm the recommended input, reference, and bypass-capacitor networks. Treat the 200 kSPS throughput rate as the maximum sampling capability and evaluate acquisition timing, acquisition time, source impedance, and the destination logic before fixing system clocking.
This product page combines the manufacturer's device information with engineering-oriented guidance covering application fit, package constraints, interface implementation, and verified replacement options. It also identifies where the AD976AARZ shares the same 28-lead SOIC footprint, helping designers determine whether a suffix-based sourcing change can preserve the existing PCB layout.
An ADC is an analog-to-digital converter, a semiconductor that samples a continuously varying voltage and represents it as a numerical value. The AD976AAR belongs to the successive-approximation ADC family and uses switched-capacitor sampling. This combination places it within the hierarchy of data-converter ICs, analog-to-digital converters, signal-chain semiconductors, and electronic components used in industrial measurement and control systems.
The AD976A reaches 200 kSPS, while the related AD976 operates at 100 kSPS. Both provide 16-bit conversion resolution, operation from one 5 V supply, selectable external or internal reference options, and a parallel interface. The internal 2.5 V reference provides a convenient starting point for single-supply designs, while external-reference selection can support systems that require a shared precision reference.
The AD976 family is fabricated using Analog Devices' proprietary BiCMOS process, combining high-performance bipolar devices with CMOS transistors. A switched-capacitor ADC uses an internal sampling network to hold the input voltage during conversion. The parallel interface exposes the converted digital result directly across device pins, reducing serial-interface overhead and supporting designs where the destination device can latch data in parallel.
Typical uses include industrial process monitoring, instrumentation, waveform acquisition, communications equipment, control systems, and embedded measurement platforms. The 28-lead SOIC package is suitable for conventional surface-mount PCB assembly and provides enough connections for analog input handling, reference selection, digital data output, control signals, and power delivery.
Before layout is finalized, use the Analog Devices AD976A datasheet to assign every signal, identify supply and ground pins, and confirm the recommended input, reference, and bypass-capacitor networks. Treat the 200 kSPS throughput rate as the maximum sampling capability and evaluate acquisition timing, acquisition time, source impedance, and the destination logic before fixing system clocking.
This product page combines the manufacturer's device information with engineering-oriented guidance covering application fit, package constraints, interface implementation, and verified replacement options. It also identifies where the AD976AARZ shares the same 28-lead SOIC footprint, helping designers determine whether a suffix-based sourcing change can preserve the existing PCB layout.
直接替换替代料： AD976AAR ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
AD976AARZ
✅ 直接替换📦 28-lead SOIC
RoHS-associated ordering suffix; 16-bit resolution and 200 kSPS class performance remain unchanged, with the same 28-lead SOIC footprint
📋 参考替代料（不在目录中）
AD976AAR 最大额定值与电气特性
| Converter Type | Successive-approximation ADC |
| 分辨率 | 16 bit |
| AD976A Throughput Rate | 200 kSPS |
| AD976 Throughput Rate | 100 kSPS |
| 电源电压 | 5 V |
| Internal Reference Voltage | 2.5 V |
| Reference Selection | Internal or external |
| Architecture | Switched-capacitor ADC |
| Process Technology | Proprietary BiCMOS |
| Output Interface | High-speed parallel |
| Clock | On-chip clock |
| 封装 | 28-lead SOIC |
| 安装类型 | Surface mount |
| Analog Input Count | 1 input |
AD976AAR 28-lead soic 引脚配置指南
AD976AAR（28-lead soic 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： AD976AAR.
请参阅 数据手册 以查看完整引脚配置。
典型应用
AD976AAR 适用于 3 应用s: 信号调理, 数据采集, 音频处理.
信号调理
使用 AD976AAR 放大和滤波传感器信号。
数据采集
使用 AD976AAR 将模拟信号转换为数字信号进行处理。
音频处理
使用 AD976AAR 进行音频信号放大和处理。
What is the AD976AAR?
The AD976AAR is a 16-bit, 200 kSPS successive-approximation ADC from Analog Devices. According to the Analog Devices AD976A datasheet, it operates from a single 5 V supply and combines a switched-capacitor sampling architecture, an internal 2.5 V reference, an on-chip clock, and a high-speed parallel interface. The AD976AAR is the 28-lead SOIC package option intended for surface-mount data-acquisition and instrumentation designs.
What is the conversion throughput of the AD976AAR?
The AD976AAR has a maximum throughput rate of 200 kSPS. According to the Analog Devices AD976A product information, the related AD976 provides 100 kSPS, making the AD976A capable of twice the sampling throughput of that family member. Design timing around the converter's acquisition and conversion intervals so that every 5 µs sampling period contains sufficient time for acquisition, conversion, and output latching.
What resolution does the AD976AAR ADC provide?
The AD976AAR provides 16-bit conversion resolution. According to the Analog Devices AD976A datasheet, the device is a fast 16-bit ADC using a switched-caparitor architecture. That resolution is useful for signal acquisition systems requiring substantially more detail than an 8-bit converter while operating at a moderate sample rate rather than the throughput of a high-speed pipeline ADC.
Does the AD976AAR operate from a single 5 V supply?
Yes, the AD976AAR operates from a single 5 V supply. According to the Analog Devices AD976A product page, both AD976 and AD976A devices support single-supply operation, while the AD976A provides 200 kSPS throughput. Use the manufacturer's recommended supply decoupling and layout guidance to preserve analog and digital signal integrity around the converter.
Where can I download the AD976AAR datasheet PDF?
The AD976AAR documentation is available through Analog Devices' AD976 and AD976A product pages and the linked manufacturer datasheet. According to the Analog Devices AD976A datasheet, the AD976 family includes the 28-lead DIP, SSOP, and SOIC packages. Use the AD976A datasheet for the complete electrical characteristics, pin assignments, timing diagrams, reference configuration, and application information.
Where can I find the AD976AAR pinout?
The AD976AAR pinout is documented in the Analog Devices AD976A datasheet, which includes the 28-lead SOIC pin configuration and package drawings. The 28-pin SOIC footprint is also used by the identified AD976AARZ replacement candidate. Assign the analog input, reference, clock, control, and 16-bit parallel data signals directly from the datasheet pin-description table.
What is the difference between AD976AAR and AD976AR?
The principal documented difference is throughput: AD976A reaches 200 kSPS, while AD976 reaches 100 kSPS. According to the Analog Devices AD976 product information, both are 16-bit switched-capacitor converters with single 5 V operation, an internal 2.5 V reference, and a parallel interface. The half-rate AD976AR is not used here as a drop-in alternative because its sampling throughput is 50% lower.
Is AD976AAR suitable for precision instrumentation?
The AD976AAR is suitable for instrumentation and measurement systems that require 16-bit resolution, a 200 kSPS maximum throughput, and a parallel digital interface. According to the Analog Devices AD976A datasheet, its internal 2.5 V reference and selectable external-reference operation support both standalone and externally referenced designs. Input bandwidth, source impedance, acquisition timing, and reference accuracy still determine the achievable system accuracy.
Can AD976AARZ replace AD976AAR without changing the PCB?
The AD976AARZ is the closest documented drop-in candidate because it is the RoHS-associated suffix variant of the same AD976A device and shares the 28-lead SOIC footprint. According to the Analog Devices AD976A product information, the AD976A family is offered in 28-lead DIP, SSOP, and SOIC packages. Verify ordering information, temperature grade, and production status against the manufacturer datasheet before production release.
What can replace the AD976AAR?
The AD976AARZ is the only verified same-footprint replacement candidate identified for the AD976AAR, with identical 16-bit resolution, 200 kSPS class positioning, single 5 V operation, and a 28-lead SOIC package. Cross-reference searches also list AD976AR, AD9761ARSZ, and AD9764ARZ for comparison, but they do not provide sufficient evidence of equivalent sampling throughput and pin-compatible interchangeability. A broader replacement should not be assumed.
What is the best Analog Devices equivalent for AD976AAR?
The AD976AARZ is the best supported Analog Devices equivalent because it represents the same AD976A family in the same 28-lead SOIC package. According to the Analog Devices AD976A product page, the AD976A family uses a 16-bit switched-caporitor architecture, a 2.5 V internal reference, a high-speed parallel interface, and 200 kSPS throughput. Confirm electrical and ordering details before treating it as a production replacement.
When should I choose the AD976AAR over a lower-speed ADC?
Choose the AD976AAR when a system requires more than the AD976 family's 100 kSPS sampling rate while retaining 16-bit resolution, single 5 V operation, and a parallel output interface. According to the Analog Devices AD976A product information, AD976A doubles the family throughput to 200 kSPS. A lower-speed converter may be preferable when acquisition time and interface simplicity matter more than sampling throughput.
How should the AD976AAR input and reference network be designed?
Design the analog input and reference network for the operating mode and acquisition bandwidth specified in the Analog Devices AD976A datasheet. According to the manufacturer documentation, the converter supports internal or external 2.5 V reference selection and uses switched-capacitor sampling. Keep the analog trace short, provide a stable reference connection, and follow the recommended bypass-capacitor and grounding arrangement to minimize acquisition-time and settling errors.
How is the 16-bit parallel output of AD976AAR interfaced?
The AD976AAR presents the 16-bit conversion result through a dedicated high-speed parallel interface rather than a serial data link. According to the Analog Devices AD976A datasheet, the AD976 family contains a high-speed parallel interface. The receiving FPGA, DSP, CPLD, or memory must support the required acquisition and conversion timing, and its input thresholds must be compatible with the converter's digital output levels.
What are the key specifications engineers should know about AD976AAR?
The AD976AAR is a 16-bit, 200 kSPS ADC with a single 5 V supply, switched-capacitor architecture, internal 2.5 V reference, on-chip clock, and high-speed parallel interface in a 28-lead SOIC package. According to the Analog Devices AD976A product page, the AD976A family also supports external-reference selection and offers 100 kSPS in the original AD976. These characteristics define its suitability for moderate-speed precision acquisition.
Where can I request a quote and current lead time for AD976AAR?
Use the Request a Quote form on this page to request current AD976AAR pricing, stock, minimum order quantity, and lead time. The available product listings identify AD976AAR as a 16-bit, 200 kSPS parallel-interface ADC in a 28-lead SOIC package, but they do not establish a fixed quantity-break price table or a guaranteed inventory position. Quote responses should be used for the current commercial commitment.
工程参考数据： AD976AAR ——对比、设计指导和合规信息。
选型指南
Choose the AD976AAR when the design requires a 16-bit converter with up to 200 kSPS throughput, operation from one 5 V supply, and a parallel data interface. It is particularly suitable for moderate-speed industrial instrumentation, process measurement, and embedded signal-acquisition systems. The AD976AARZ is the preferred drop-in option when procurement or compliance ordering requires the Z-suffix variant, because it retains the same 28-lead SOIC footprint and core conversion characteristics. The original AD976AR should be selected instead only when 100 kSPS is sufficient and its lower sampling rate is acceptable. Do not treat AD9761ARSZ or AD9764ARZ as replacements without a complete timing, reference, and pin-function review. For any new design, verify the latest manufacturer datasheet, package dimensions, acquisition-time curves, and production ordering information.
与替代料对比
| 参数 | 本产品 | AD976AARZ |
|---|---|---|
| Package | 28-lead SOIC | 28-lead SOIC - same footprint |
| Brand | Analog Devices | Analog Devices |
| Resolution | 16 bit | 16 bit |
| Throughput Rate | 200 kSPS | 200 kSPS |
| Supply Voltage | 5 V | 5 V |
| Internal Reference | 2.5 V | 2.5 V |
| Converter Architecture | Successive-approximation switched-capacitor ADC | Successive-approximation switched-capacitor ADC |
| Digital Interface | High-speed parallel | High-speed parallel |
| Process Technology | Proprietary BiCMOS | Proprietary BiCMOS |
| Ordering Suffix | AD976AAR | AD976AARZ |
关键差异点
- Twice the sampling throughput of the original AD976 （对比 AD976AR)
- Same-footprint ordering option （对比 AD976AARZ)
- Parallel output reduces serial-interface overhead （对比 AD976AR)
设计说明
Route the analog input directly to the converter and keep it away from the 16-bit parallel output and clock nets. Use the Analog Devices AD976A datasheet reference configuration and package guidance when assigning input, reference, ground, and bypass connections. A short analog path, solid ground plane, and controlled return-current routing help preserve the 16-bit conversion performance expected from this switched-capacitor ADC.
Use a short, continuously referenced clock connection and match the converter's digital outputs to the receiving FPGA, DSP, or CPLD interface. The AD976AAR provides a high-speed parallel bus, so clock-to-output and data-valid timing must be checked against the acquisition and conversion cycle at the intended 200 kSPS operating rate. Avoid adding unnecessary stubs or long point-to-point branches.
Do not treat the 200 kSPS throughput value as the permitted input bandwidth. The switched-capacitor acquisition network, source impedance, reference impedance, and signal frequency determine whether each sample has enough settling time. Review the Analog Devices AD976A datasheet acquisition-time curves and drive the input with an appropriately low-impedance source before interpreting converter codes.
Place the input, reference, and bypass components close to their associated pins and follow the manufacturer's layer-placement guidance. Separate sensitive analog routing from the parallel digital outputs, and provide a continuous ground reference under the device where practical. These measures reduce parasitic coupling, ground bounce, and reference disturbance during the 5 µs sampling period associated with the 200 kSPS maximum rate.
合规信息
RoHS
Unknown
REACH
Unknown
AEC-Q100
Not Applicable
无铅
Unknown
无卤
Unknown
冲突矿物
Unknown
The AD976AARZ comparison identifies a RoHS-associated suffix, but an explicit compliance declaration for AD976AAR was not established. AEC-Q100 is not applicable because this is a general-purpose ADC.
数据核验日期： 2026-11-03
——数据由 XAIPART 元器件工程团队核验和整理
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相关元器件 & 术语
Analog Devices
AD976AAR
AD976AARZ
AD976AR
AD9761ARSZ
AD9764ARZ
Analog-to-digital converter
ADC
successive-approximation ADC
switched-capacitor ADC
data-converter IC
semiconductor
16-bit ADC
200 kSPS
5 V power supply
2.5 V internal reference
high-speed parallel interface
on-chip clock
BiCMOS
28-lead SOIC
SOIC package family
surface-mount package
industrial instrumentation
process monitoring
signal acquisition
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