ADS801U - 12-Bit 25-MSPS ADC | Texas Instruments
部品番号: ADS801U ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
ADS801U 概要
An ADC is a data-converter category that samples an analog voltage and converts it into a digital code for processing, storage, display, or control. The ADS801U belongs to the parallel-output pipelined ADC family and is positioned between general-purpose mixed-signal processing and high-speed measurement. Its 12-bit resolution provides 4096 quantization levels, while the 25-MSPS sampling rate supports rapidly changing signals when the analog front end and system clock are designed appropriately.
Key features include no missing codes, a 65 MHz track-and-hold bandwidth, internal references, single-ended or differential input configuration, and compatibility with ADS800 and ADS802 pin arrangements. The single +5 V supply simplifies system power design, while the three-state outputs support bus-oriented connection to digital logic. The supplied technical data identifies a 54 mA supply current and an industrial temperature grade of -40 °C to +85 °C for the ADS801U package.
The converter uses a small-geometry CMOS process and a pipelined conversion architecture. Pipelining supports high throughput by dividing the conversion process into stages, although system designers must account for the device's specified acquisition and conversion timing. The 28-pin SOIC package is intended for surface-mount assembly and includes analog, digital, reference, and control connections.
Typical applications include industrial measurement, communications equipment, test and measurement instrumentation, control systems, and embedded signal acquisition. The 25 MSPS rate is useful when sampling waveforms or feedback signals, while 12-bit resolution balances data fidelity against digital interface bandwidth. Differential input support can improve signal integrity when the source is balanced and the PCB layout is controlled.
Designers should verify the exact pinout, analog input range, reference configuration, timing, output coding, and package details in the manufacturer datasheet before layout. Keep analog and digital return paths separated, place bypass capacitance near the supply pins, and provide a controlled input source. The SOIC footprint also allows easy breadboard and prototype assembly, although production layouts should minimize parasitic capacitance and digital crosstalk.
ドロップイン代替品: ADS801U — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: ADS801U （同一形状・フットプリント） — 相違点: Package, Process Technology.
クイック比較ツール — 並列比較する代替部品を選択:
ADS802U
✅ ドロップイン✓ 在庫あり
価格はお問い合わせください
データシートを見る →ADS801UG4
✅ ドロップイン📋 参考代替品（カタログ未掲載）
ADS801U 最大定格＆電気的特性
| 仕様はありません |
ADS801U standard ピン配置ガイド
ADS801U (standard パッケージ) のピン配置。 このアナログコンポーネントは、入力、出力、および電源ピンを備えています。オフセットナル、補償、イネーブルピンの設定については、メーカーのデータシートを参照してください。信号調整やアンプ回路に最適です。
詳細なピン配置データはありません: ADS801U.
詳細は データシート をご参照ください。
主な用途
ADS801U の用途: 6 件s: Industrial Signal Acquisition, Test and Measurement Instrumentation, Communications and Control Loops, Waveform Monitoring, Sensor Interface Systems, Embedded Data Acquisition.
Industrial Signal Acquisition
ADS801U fits industrial signal-acquisition systems that need a compact 12-bit converter with a 25 MSPS sampling rate. The 65 MHz track-and-hold bandwidth gives the analog front end useful bandwidth margin for conditioning sensor or process signals. Its single +5 V supply simplifies system integration, while single-ended or differential input selection allows the board to support grounded sensors or balanced sources. Designers should place the converter close to the input network, use stable bypass capacitors, and verify the acquisition timing for the required waveform bandwidth.
おすすめ
Test and Measurement Instrumentation
ADS801U is appropriate for oscilloscope-like, instrumentation, and automated test systems that sample waveforms at up to 25 MSPS. The 12-bit quantizer provides 4096 digital codes, offering a practical balance between resolution, data rate, and parallel-output implementation. Its three-state outputs can simplify connection to digital acquisition logic when the surrounding bus architecture supports them. The analog input path still needs sufficient bandwidth, low noise, controlled grounding, and calibration to achieve useful measurement accuracy.
おすすめ
Communications and Control Loops
ADS801U can serve as the sampling element in communications equipment and control systems that monitor rapidly varying analog feedback. Its 25 MSPS rate supports higher throughput than lower-speed general-purpose converters, while differential input support can help reject common-mode noise on balanced signals. The design must still account for digital clock routing, output timing, input bandwidth, and system latency. For closed-loop control, verify whether the application needs simultaneous sampling or other features not specified in the verified data.
おすすめ
Waveform Monitoring
ADS801U is suitable for waveform monitoring when the sampled signal is within the converter's input and bandwidth requirements. The 65 MHz track-and-hold bandwidth supports acquisition of higher-frequency content than the 25 MSPS sampling rate alone might imply, although anti-aliasing and output timing must be designed correctly. Differential input can be valuable in noisy environments, while single-ended input can simplify lower-cost sensor interfaces. Digital storage and processing should account for the parallel output timing and acquisition latency.
おすすめ
Sensor Interface Systems
ADS801U can convert conditioned outputs from pressure, position, current, and other analog sensors when the required bandwidth justifies a 25 MSPS converter. A single-ended input simplifies single-supply sensor interfaces, while differential input can reduce sensitivity to common-mode voltage in balanced circuits. The internal reference and integrated track-and-hold reduce the number of separate blocks needed for a compact acquisition channel. Calibration, input scaling, grounding, and protection must be added externally because those functions are not fully specified in the verified data.
おすすめ
Embedded Data Acquisition
ADS801U is appropriate for an embedded acquisition module when the host processor can receive parallel digital samples and the application needs more sampling capability than a slow integrated ADC. The 28-pin SOIC package is convenient for prototype boards and conventional surface-mount assembly, while the 12-bit output provides a straightforward digital interface. Because the verified material does not specify all timing and logic-level details, the host interface should be designed only after checking the current manufacturer datasheet and validating output timing.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: ADS801U — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | ADS802U | ADS801UG4 |
|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 28-pin SOIC (DW) | 28-pin SOIC (DW), reported pin-compatible | SOIC-28 |
主な差別化要因
- Higher sampling rate than the verified TI replacement candidate （vs ADS802U)
- Explicit 12-bit quantization （vs ADS802U)
- Wideband track-and-hold capability （vs ADS802U)
- Single +5 V operation （vs ADS801UG4)
設計ノート
Route analog input and reference connections away from digital output and clock traces. Keep the ADC input network close to the converter, use a continuous ground reference, and place supply bypass capacitance near the +5 V and ground pins. Because ADS801U is a high-speed converter, uncontrolled trace inductance and parasitic capacitance can degrade acquisition behavior even when the nominal sampling rate is within specification.
Verify acquisition and conversion timing with the current manufacturer datasheet before setting the sampling clock. The converter's 25 MSPS rating and 65 MHz track-and-hold bandwidth do not guarantee usable performance for every input frequency. Account for source impedance, amplifier settling time, anti-alias filtering, and clock jitter so that the analog front end can settle before each sample.
Do not substitute ADS802U without checking throughput. The verified TI support result identifies ADS802U as a drop-in replacement candidate, but its 10 MHz sampling frequency is substantially below ADS801U's 25 MHz. It may be usable in lower-bandwidth designs, yet it can change system timing and bandwidth behavior. Confirm package pinout, input range, timing, and output coding against the current datasheet.
For differential inputs, route the signal pair with matched geometry and controlled return paths, and keep the analog and digital grounds arranged to minimize shared impedance. The verified data confirms differential input support, but it does not provide the complete recommended layout or input-range values. Those details must be obtained from the official ADS801 datasheet before high-speed board release.
コンプライアンス情報
The verified search results identify the industrial -40 °C to +85 °C temperature grade but do not provide explicit RoHS, REACH, lead-free, halogen-free, conflict-minerals, or AEC-Q100 statements. ADS801U is an analog-to-digital converter rather than an automotive-qualified device in the supplied data.
