AD976AAN - 16-Bit 200 kSPS ADC | Analog Devices | Industrial
MPN: AD976AAN ✓ Hoạt độngAD976AAN Tóm tắt
An ADC is a data-conversion IC that transforms a continuous analog voltage into a digital number for processing, measurement, or transmission. The AD976A belongs to the successive-approximation, or SAR, ADC family. SAR converters compare the sampled input with an internal reference through a successive series of conversion steps. This architecture is widely used where moderate conversion speed, compact size, and direct parallel digital output are more important than very high sample rates.
The AD976AAN provides a throughput rate of 200 kSPS and 16-bit resolution, producing 65,536 possible digital codes for each conversion. Its single 5 V supply simplifies system power design, while the parallel interface allows the converted value to be read directly by suitable digital logic. A factory-calibrated internal 2.5 V reference provides a convenient default for acquisition systems, and the device also supports an external reference when greater system-level control is required.
The AD976A uses Analog Devices’ proprietary BiCMOS process, combining high-performance bipolar devices with CMOS circuitry. Internally, the converter is based on a switched-capertor successive-approximation architecture. The analog front end accepts the standard industrial ±10 V range, while the 28-pin parallel-interface package provides straightforward connection to digital control and data-capture circuitry. The maximum power dissipation stated in the datasheet is 100 mW.
Typical uses include industrial process measurement, laboratory data-acquisition equipment, industrial control systems, communications equipment, and embedded instrumentation. The 200 kSPS rate is appropriate for acquiring many analog signals or control channels while the 16-bit word length preserves fine amplitude detail. The manufacturer identifies the AD976AAN as an industrial-grade, through-hole 28-pin DIP device.
For a new design, preserve the ±10 V input-signal path and 5 V supply architecture around the converter, and follow the manufacturer datasheet for reference, analog-input, digital-interface, and decoupling connections. Pay particular attention to source impedance and acquisition timing because the switched-capacitor SAR input presents a sampled load during each conversion.
This page combines the manufacturer’s converter specifications with practical selection guidance, verified pin-compatible family alternatives, comparison parameters, and design considerations. It helps engineers evaluate the AD976AAN alongside the AD976 and AD976AANZ while preserving package and interface constraints.
Bộ thay thế dễ dàng lắp đặt cho AD976AAN — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
AD976AANZ
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
AD976AAN Tỷ lệ tối đa & tính chất điện
| Độ phân giải | 16 bit |
| Throughput Rate | 200 kSPS |
| Conversion Architecture | Successive approximation (SAR) |
| Analog Input Channels | 1 channel |
| Điện áp cung cấp | 5 V |
| Internal Reference Voltage | 2.5 V |
| Reference Selection | Internal or external, 2 choices |
| Analog Full-Scale Input Range | ±10 V |
| Digital Interface | Parallel |
| On-Chip Clock | 1 integrated clock |
| Process Technology | Proprietary BiCMOS |
| Maximum Power Dissipation | 100 mW |
| Factory Calibration | Linearity-error minimization calibrated at production |
| Hộp | 28-pin PDIP |
| Terminal Type | Through-hole |
| Temperature Grade | Industrial grade |
Hướng dẫn cấu hình chân AD976AAN 28-pin pdip
Cấu hình chân cho AD976AAN (28-pin pdip gói). Thành phần số hiệu này có chân đầu vào, đầu ra và nguồn cung cấp. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết cấu hình chân bù, bù trừ và chân kích hoạt. Hoàn hảo cho điều kiện tín hiệu và mạch khuếch đại.
Không có dữ liệu chân cụ thể sẵn có cho AD976AAN.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
AD976AAN phù hợp cho 6 Áp dụngs: Industrial Process Measurement, Laboratory Data Acquisition, Industrial Control Systems, Communications and Signal Conditioning, Test and Measurement Equipment, Embedded Data Logging.
Industrial Process Measurement
AD976AAN fits industrial process-monitoring systems that need to digitize standard ±10 V sensor or control signals with 16-bit resolution. Its 200 kSPS throughput provides ample conversion margin for multiple analog channels, while the switched-capacitor SAR architecture converts each sampled value to a 16-bit digital code. Place the converter behind protected analog front ends, observe the required acquisition interval, and use the 5 V supply and parallel interface to connect it to a controller or data-logging system.
Được đề xuất
Laboratory Data Acquisition
AD976AAN is suitable for laboratory instruments that acquire bipolar analog waveforms at up to 200 kSPS. Its 16-bit resolution represents the input with 65,536 digital codes, while the ±10 V range accommodates many conventional signal sources after appropriate attenuation or conditioning. The single 5 V supply and parallel output simplify board partitioning, although the analog source must satisfy the SAR input’s acquisition time and the digital system must capture each conversion without timing errors.
Được đề xuất
Industrial Control Systems
AD976AAN can serve as the analog input stage of an industrial controller monitoring pressure, position, level, or actuator feedback. The converter accepts a standard ±10 V industrial signal and supplies a parallel 16-bit result for digital processing. Its 200 kSPS throughput allows faster sampling than many slow supervisory-control loops require, while the internal 2.5 V reference provides a convenient default. Confirm that the complete control system satisfies the converter’s specified acquisition and settling requirements.
Được đề xuất
Communications and Signal Conditioning
AD976AAN is appropriate for communications equipment that digitizes received or transmitted analog waveforms requiring a 16-bit code and 200 kSPS sampling. The parallel interface allows direct connection to digital signal-processing logic, while the single 5 V supply supports integration into compact mixed-signal assemblies. Analog filtering and gain stages should account for the ±10 V input range, and layout should separate sensitive converter inputs from noisy digital return paths to preserve signal integrity.
Được đề xuất
Test and Measurement Equipment
AD976AAN can be incorporated into portable and bench-based test equipment that measures bipolar voltages or conditioned sensor outputs. A 16-bit conversion result supports detailed numerical analysis, and the 200 kSPS rate permits repeated sampling of dynamic but moderate-bandwidth waveforms. The 28-pin PDIP package supports through-hole assembly and prototype rework, while the internal 2.5 V reference can simplify initial bring-up. The instrument design must still provide input protection, stable supply rails, and appropriate source impedance.
Được đề xuất
Embedded Data Logging
AD976AAN can be used in embedded data loggers that periodically sample one bipolar analog channel and store the result for later analysis. Its 200 kSPS capability is substantially higher than ordinary logging rates, while 16-bit resolution preserves numerical detail. The parallel output can feed a microcontroller, FPGA, or data-capture logic, and the single 5 V supply simplifies shared power distribution. Timing design should ensure the sampled waveform is acquired correctly and each 16-bit word is transferred before the next conversion sequence requires attention.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho AD976AAN — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | AD976AANZ |
|---|---|---|
| Brand | Analog Devices | Analog Devices |
| Package | 28-pin PDIP | 28-pin PDIP |
| Resolution | 16 bit | 16 bit |
| Throughput Rate | 200 kSPS | 200 kSPS |
| Conversion Architecture | Successive approximation (SAR) | Successive approximation (SAR) |
| Analog Input Channels | 1 channel | 1 channel |
| Supply Voltage | 5 V | 5 V |
| Internal Reference | 2.5 V | 2.5 V |
| Analog Input Range | ±10 V | ±10 V |
| Digital Interface | Parallel | Parallel |
Bảo phân biệt quan trọng
- Identical conversion core in the confirmed package-compatible alternative (vsAD976AANZ)
- Factory-calibrated high-speed SAR conversion (vsAD976AANZ)
- Single-supply operation with flexible reference selection (vsAD976AANZ)
Ghi chú thiết kế
Do not treat the ±10 V input specification as permission to bypass signal conditioning. The analog input must remain within the converter’s rated range under normal operation, transients, and fault conditions. Use appropriately rated protection and attenuation networks, keep the source impedance low enough to charge the switched-capacitor input during acquisition, and verify timing with the acquisition and settling information in the Analog Devices AD976/AD976A datasheet.
The AD976AAN operates from one 5 V supply and has a listed maximum power dissipation of 100 mW. Provide a stable, low-noise 5 V rail and follow the manufacturer’s recommended input, output-reference, and bypass-capacitor arrangements. If an external reference is selected instead of the internal 2.5 V reference, verify its startup, stability, noise, and drive requirements against the datasheet because reference performance directly affects conversion accuracy.
Route the ±10 V analog input with short traces and keep the parallel digital outputs away from sensitive input and reference nodes. Place the required bypass capacitors close to their supply and reference pins, use a solid ground-plane strategy, and return digital output-current paths without sharing narrow paths with analog input current. The switched-capacitor SAR core makes careful grounding and source-impedance control especially important when converting low-level conditioned signals.
Design the digital acquisition path around the 16-bit parallel interface rather than treating it as a generic low-speed control bus. Use an available clock or the converter’s specified operating conditions to establish valid sampling instants, account for output timing at the system boundary, and avoid loading outputs with unsuitable capacitance. The 200 kSPS conversion rate is the core benchmark, but the receiving logic must satisfy the interface timing specified in the manufacturer datasheet.
Thông tin tuân thủ
The manufacturer and distributor information identifies AD976AAN as an industrial-grade 28-pin PDIP ADC but does not state the requested environmental compliance attributes. The suffixes AD976AAN and AD976AANZ must be checked against current manufacturer ordering and material declarations before production release.