AD9280ARS - 8-Bit 32 MSPS ADC | Analog Devices
MPN： AD9280ARS ✓ 啟用中AD9280ARS 概覽
An ADC converts an analog input voltage into a corresponding digital code for processing, measurement, or transmission. The AD9280 belongs to the parallel-output ADC family within the broader semiconductor and data-converter hierarchy. Its 8-bit resolution supports 256 digital codes, while its 32 MSPS sampling rate suits video, communications, instrumentation, and industrial control systems that require rapid conversion but do not require high bit depth.
The AD9280ARS provides a 0.2 LSB differential nonlinearity specification, three-state outputs, a power-down sleep mode, and an out-of-range indicator. Its parallel architecture makes digital data available directly through eight output lines after each conversion. The device is also identified as pin-compatible with the AD876-8, which helps simplify legacy board reuse where the electrical requirements match.
Power consumption is listed as 95 mW at a 3 V supply in the retrieved product documentation. The single-supply design simplifies system-level power planning, while the internal reference removes the need for a separate reference circuit in straightforward designs. The optional clamp circuit supports dc restoration for video or ac-coupled signals, while the input and digital interface must still be checked against the specific board requirements.
Typical uses include digital video measurement, waveform capture, communications receivers, factory test equipment, and embedded signal-processing systems. When laying out a design, preserve high-speed analog routing, provide stable supply bypassing, respect output timing requirements, and account for the clock and data acquisition system. For replacement work, verify the exact SSOP footprint, pinout, supply voltage, and timing behavior rather than relying only on the resolution and sampling-rate labels.
This page combines the verified Analog Devices product information, distributor references, packaging details, application guidance, and drop-in replacement analysis to support faster engineering selection.
直接替換替代品，適用於 AD9280ARS — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： AD9280ARS （相同外形與佔位） — 差異在於 Out-of-Range Indicator, Architecture, Package, Supply Voltage, Pin Compatibility.
AD9280ARSZ
✅ 直接替換聯絡詢價
查看資料表 →AD9280ARSRL
✅ 直接替換聯絡詢價
查看資料表 →AD9280ARSZRL
✅ 直接替換聯絡詢價
查看資料表 →AD876-8
✅ 直接替換📋 參考替代品（不在目錄中）
AD9280ARS 最大額定值與電氣特性
| 解析度 | 8 bit |
| 取樣率 | 32 MSPS |
| Architecture | Multistage differential pipeline |
| Input Type | Single analog input |
| 供應電壓 | +2.7 V to +5.5 V |
| Power Dissipation | 95 mW at 3 V supply |
| Differential Nonlinearity | 0.2 LSB |
| Sample-and-Hold Amplifier | On-chip |
| Voltage Reference | On-chip |
| Power-Down Mode | Sleep mode |
| Output State | Three-state outputs |
| Out-of-Range Indicator | Provided |
| Optional Clamp Circuit | Provided for dc restoration |
| Output Interface | 8-bit parallel output |
| Missing Codes | No missing codes over full operating temperature range |
| Pin Compatibility | Pin-compatible with AD876-8 |
| 封裝 | 28-pin SSOP |
| 安裝類型 | Surface mount |
AD9280ARS 28-pin ssop 腳位配置指南
AD9280ARS（28-pin ssop 封裝）的腳位配置。 此類比元件具有輸入、輸出與電源腳位。偏移歸零、補償與致能腳位配置請參閱製造商資料表。適用於訊號調理與放大器電路。
無詳細腳位定義資料： AD9280ARS.
請參閱 資料表 以查看完整腳位配置。
典型應用
AD9280ARS 適用於 6 應用s: Digital Video Signal Digitization, Communications Receiver Front End, Industrial Waveform Capture, Test and Measurement Instrumentation, Embedded Data Acquisition, Video and Communications Power-Constrained Designs.
Digital Video Signal Digitization
AD9280ARS fits video acquisition designs that need an 8-bit converter at 32 MSPS. Its optional clamp circuit is intended for dc restoration of video or ac-coupled signals, helping the converter establish the correct signal baseline before digitization. The parallel output can feed an FPGA, video processor, or capture logic without a serial interface. Designers should verify clock timing, pixel-rate requirements, input bandwidth, and output settling before selecting the converter. Because the resolution is 8 bit, it is most appropriate where 256 codes are sufficient and the system does not require the dynamic range of a higher-resolution ADC.
推薦
Communications Receiver Front End
The 32 MSPS sampling rate makes AD9280ARS useful for communication receivers and envelope or waveform monitoring when an 8-bit digital representation is sufficient. The multistage differential pipeline architecture provides a direct conversion path into digital logic, while the single-supply operation simplifies portable and embedded systems. Use the on-chip sample-and-hold amplifier and reference for baseline designs, but account for analog input bandwidth, clock jitter, and output timing in high-speed installations. The device is not a substitute for a high-resolution RF converter without a complete signal-chain review.
推薦
Industrial Waveform Capture
AD9280ARS can sample repetitive waveforms in industrial diagnostic equipment where 32 MSPS and 8-bit resolution provide a practical balance between bandwidth, data volume, and cost. The parallel output allows a capture FPGA to timestamp samples and perform filtering, thresholding, or peak detection. The single +2.7 V to +5.5 V supply range supports compact embedded designs, while the internal reference reduces external circuit count. Engineers should still calibrate the analog front end, define the input bandwidth, and verify that 8-bit quantization meets the required measurement resolution.
推薦
Test and Measurement Instrumentation
The AD9280ARS is appropriate for digitizing repetitive signals in oscilloscope-like, automated test, and signal-analysis equipment when 32 MSPS is sufficient. Its on-chip reference and sample-and-hold amplifier can simplify the converter subsystem, and the 8-bit parallel interface is convenient for FPGA-based acquisition. Instrument designs should place the acquisition path close to the ADC, control clock jitter, and account for analog gain and bandwidth separately from converter resolution. For measurements requiring more than 8 bits, use a higher-resolution converter or add gain and averaging without assuming that the ADC itself supplies the missing resolution.
推薦
Embedded Data Acquisition
AD9280ARS supports embedded acquisition systems that need deterministic parallel data rather than a serial converter interface. The 32 MSPS rate provides temporal resolution for vibration, control, and event signals, while the 8-bit output keeps the data bus and processing load manageable. An FPGA or DSP can buffer samples, perform windowing, or extract control variables in real time. The single-supply operation is useful in compact systems, but the designer must verify input common-mode range, signal amplitude, clock source quality, and the exact 28-pin SSOP footprint.
推薦
Video and Communications Power-Constrained Designs
The 95 mW power-dissipation value listed for a 3 V supply makes AD9280ARS relevant to compact acquisition boards where converter power must remain bounded. Its 32 MSPS sampling capability and 8-bit parallel output are useful for low-power video monitoring or communications front ends that do not require higher resolution. Power savings should be evaluated against analog drive, clocking, memory, FPGA, and I/O power rather than considering the ADC alone. Sleep mode and three-state outputs can help control power and bus contention during inactive periods, subject to the timing behavior in the datasheet.
推薦
推薦產品摘要
工程參考資料，適用於 AD9280ARS — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | AD9280ARSZ | AD9280ARSRL | AD9280ARSZRL | AD876-8 |
|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
主要差異化特點
- Single-supply 32 MSPS conversion (對比AD9280ARSZ)
- Pipeline architecture with no missing codes (對比AD876-8)
- Video-oriented dc restoration option (對比AD9280ARSRL)
設計說明
Treat the AD9280ARS as a high-speed mixed-signal device even though the interface is only 8 bits wide. Route the sampling clock, analog input, and digital outputs with controlled return paths and avoid long stubs or unnecessary vias. The 32 MSPS specification makes clock jitter and data timing part of the signal-integrity budget. Validate with an eye diagram or equivalent timing test on the assembled board.
Place supply bypass capacitors close to the AD9280ARS power pins and use the manufacturer’s recommended supply and reference layout. The verified data lists 95 mW dissipation at a 3 V supply, but actual board power also includes analog drivers, clock circuitry, digital loads, and leakage. Estimated: the ADC’s tabulated 95 mW is not a complete system power budget; measure current under the intended sampling and output-loading conditions.
Keep the analog input path short and separate it from the eight-bit parallel output bus where possible. Use a continuous ground reference and place decoupling, analog input conditioning, and digital interface components according to the datasheet pin and layout guidance. The 28-pin SSOP package is not an exposed-pad thermal design by default, so do not assume a large exposed thermal pad exists without checking the exact package drawing.
Do not substitute AD9280ARSZ, AD9280ARSRL, AD9280ARSZRL, or AD876-8 solely because the descriptions look similar. Confirm the exact pinout, suffix-specific temperature grade, package dimensions, output timing, supply limits, and lifecycle status. The supplied data explicitly establishes AD876-8 pin compatibility but does not establish complete electrical equivalence. Request manufacturer documentation before using any replacement in production.
合規資訊
The supplied verified data does not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status for AD9280ARS. These fields remain unknown rather than inferred.