TMC2242AKTCT - 30MHz Half-Band Digital Filter | onsemi
部品番号: TMC2242AKTCT ✓ 生産中TMC2242AKTCT 概要
A half-band filter is a specialized FIR digital filter whose frequency response has a narrow transition band centered near the cutoff frequency. Only every other input coefficient is nonzero in the ideal half-band structure, reducing the number of active multipliers relative to a conventional FIR filter. In signal-processing hierarchies, the TMC2242AKTCT belongs to the active-filter and digital-filter categories, then to the interface-IC and video-IC application segment.
The TMC2242AKTCT provides one filter, a nominal 30 MHz cutoff or center frequency, and digital operation identified as 12-bit or 16-bit. Its specified 4.75 V to 5.25 V supply range is suitable for conventional 5 V digital signal-processing equipment. The 44-MQFP surface-mount package provides 44 physical pins and a 10 mm by 10 mm footprint. Active-production status is reported by Rochester Electronics in the supplied distributor information.
The device combines interpolation and decimation in one digital filter family. When used for interpolation, it can increase the effective sample rate while suppressing imaging between original signal bands. When used for decimation, it can reduce the data rate while suppressing aliasing before the signal is downsampled. The half-band coefficient structure is particularly useful where computational efficiency, predictable filtering, and a compact implementation are more important than a user-programmable coefficient architecture.
Typical applications include digital video interfaces, multimedia processing chains, communications equipment, audio and video sample-rate conversion, clocked digital filtering, and embedded signal-processing systems. The component can be placed after an ADC or digital transmitter when decimation is required, or before a DAC or digital transmitter when interpolation is required. System timing, input word width, output word width, and clock polarity must be verified against the manufacturer datasheet before layout is finalized.
The primary design consideration is clock and data-interface validation. The 5 V operating range is narrow, so supply regulation, ground return paths, and exposed-pad connection must follow the manufacturer layout recommendations. Because the provided search results do not expose the complete pin table, clock timing, control-signal truth table, or thermal-resistance data, engineers should confirm those details in the Fairchild Semiconductor manufacturer datasheet before production release.
This product record consolidates verified distributor pricing, package information, lifecycle information, technical-fit guidance, and traceable source links. It also distinguishes what is confirmed from what still requires datasheet verification, providing a practical basis for schematic capture, PCB planning, sourcing, and prototype review without presenting unavailable electrical details as guaranteed specifications.
ドロップイン代替品: TMC2242AKTCT — 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。
この製品に利用可能なドロップイン代替品はありません。
代替品をリクエストTMC2242AKTCT 最大定格＆電気的特性
| Filter Type | Digital half-band interpolating/decimating filter |
| Number of Filters | 1 |
| Filter Order | Half band |
| Cutoff or Center Frequency | 30 MHz |
| Digital Word Length | 12-bit or 16-bit |
| Supply Voltage Range | 4.75 V to 5.25 V |
| パッケージ | 44-MQFP (10 mm x 10 mm) |
| 実装タイプ | Surface mount |
| Manufacturer | Fairchild Semiconductor, now onsemi |
| Product Status | Active |
TMC2242AKTCT 44-mqfp (10 mm x 10 mm) ピン配置ガイド
TMC2242AKTCT (44-mqfp (10 mm x 10 mm) パッケージ) のピン配置。 ピン番号、機能、接続図はメーカーのデータシートで定義されています。正確なフットプリントとはんだ付けのガイドラインについては、データシートを参照してください。
詳細なピン配置データはありません: TMC2242AKTCT.
詳細は データシート をご参照ください。
主な用途
TMC2242AKTCT の用途: 6 件s: Digital Video Sample-Rate Conversion, Audio Sample-Rate Interpolation, Communications Interface Filtering, Clocked Digital Signal Processing, ADC Output Decimation, Embedded Multimedia Processing.
Digital Video Sample-Rate Conversion
The TMC2242AKTCT fits digital video sample-rate-conversion stages that require a dedicated half-band filter around its specified 30 MHz cutoff or center frequency. It can be placed between a video source and a downstream transmitter or display interface to suppress spectral images during interpolation or control aliasing during decimation. The 12-bit or 16-bit digital operation and 4.75 V to 5.25 V supply suit a 5 V processing domain. Before committing the circuit, verify clock rate, data-bus timing, input and output word lengths, and the complete 44-pin signal map against the manufacturer datasheet.
おすすめ
Audio Sample-Rate Interpolation
The TMC2242AKTCT can be used in an audio-rate conversion path where a half-band interpolation stage is needed between an existing digital stream and a higher-rate output. Its confirmed 30 MHz cutoff or center frequency is much higher than typical baseband audio bandwidth, allowing the device to participate in a higher-rate multimedia processing chain rather than a conventional low-frequency audio-only filter. The 5 V supply range supports integration with established digital logic. Verify the datasheet's actual audio-mode rate, supported clocking scheme, and filter response before signal-path sign-off.
おすすめ
Communications Interface Filtering
The TMC2242AKTCT is applicable where a communications data path needs dedicated interpolation or decimation rather than a configurable general-purpose FIR filter. Its confirmed one-filter half-band architecture, nominal 30 MHz cutoff or center frequency, and 12-bit or 16-bit operation can support digital conditioning around high-rate converters or interface stages. The 44-MQFP surface-mount package accommodates dense digital layouts, but its 10 mm by 10 mm body is not a tiny alternative to a small QFN. Confirm maximum input and output rates, clock latency, and control compatibility in the manufacturer documentation.
おすすめ
Clocked Digital Signal Processing
The TMC2242AKTCT suits clocked digital signal-processing systems requiring a fixed half-band response in a 5 V logic environment. Its confirmed 30 MHz cutoff or center frequency and 12-bit or 16-bit interface description make it appropriate for evaluation in multimedia pipelines where interpolation or decimation is part of the data architecture. Because the supplied results do not specify maximum clock frequency, setup time, or pipeline latency, those parameters must be obtained from the Fairchild Semiconductor datasheet before defining the surrounding clock tree and PCB timing budget.
おすすめ
ADC Output Decimation
The TMC2242AKTCT can serve as a decimation stage after a high-speed ADC when the downstream processor requires a lower sample rate and reduced aliasing content. The supplied data identifies a 30 MHz cutoff or center frequency and 12-bit or 16-bit operation, making it a candidate for evaluating in high-speed digital acquisition paths. The device must be clocked consistently with the ADC and the receiving logic, and its supported word-length modes must be confirmed. Do not finalize synchronization or latency assumptions until the complete timing and pinout information is verified from the manufacturer datasheet.
おすすめ
Embedded Multimedia Processing
The TMC2242AKTCT is applicable to embedded multimedia systems that combine digital video, audio, or communications channels and require a fixed half-band filter function. Its dedicated interpolating and decimating architecture can reduce the complexity of implementing equivalent FIR behavior in general-purpose logic or software. The verified 5 V operating range and surface-mount 44-MQFP package support conventional board-level integration. Engineering review should still cover clock-domain crossing, enable sequencing, ground-plane continuity, exposed-pad soldering, and the manufacturer's recommended input and output termination.
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: TMC2242AKTCT — 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 |
|---|---|
| Brand | onsemi |
| Manufacturer Heritage | Fairchild Semiconductor, now onsemi |
| Product Type | Digital half-band interpolating/decimating filter IC |
| Number of Filters | 1 |
| Cutoff or Center Frequency | 30 MHz |
| Digital Operation | 12-bit or 16-bit |
| Supply Voltage Range | 4.75 V to 5.25 V |
| Package | 44-MQFP (10 mm x 10 mm) |
| Mounting Type | Surface mount |
| Lifecycle Status | Active |
主な差別化要因
- Dedicated half-band processing function （vs TMC2242AKTC)
- Established 5 V digital integration range （vs TMC2242AKTC)
- Explicit active-production status （vs TMC2242AKTC)
設計ノート
Route the digital clock and data signals as short, impedance-controlled nets, and place the device close to the source and destination devices. The verified package is 44-MQFP, so the pinout and exposed-pad layout must be taken directly from the manufacturer datasheet; do not infer connections from the 10 mm by 10 mm body size. If the package includes an exposed thermal pad, follow the manufacturer's solder, via, and land-pattern recommendations.
The TMC2242AKTCT requires a supply within 4.75 V to 5.25 V. Provide a stable 5 V rail with low impedance and place local high-frequency bypass capacitors close to the supply and ground pins. The verified results do not provide current consumption, so a final power budget requires the manufacturer supply-current figures and the actual operating clock and data rates.
Clock and data timing must be established before PCB sign-off because the supplied search snippets do not disclose setup time, hold time, maximum frequency, or propagation latency. Use the manufacturer's recommended clock topology and external components, account for board skew, and avoid introducing uncontrolled stubs into high-speed digital nets. Validate the final interface with representative source and destination devices.
Do not substitute TMC2242AKTC for TMC2242AKTCT solely because distributor snippets show the same 44-MQFP package and filter description. The final ordering suffix may distinguish packaging or orderable variants, and the supplied evidence does not define its meaning. Obtain manufacturer or authorized-supplier confirmation of electrical equivalence, packaging, moisture handling, and lifecycle status before using it as a drop-in replacement.
コンプライアンス情報
The supplied verified results do not contain explicit RoHS, REACH, lead-free, halogen-free, or conflict-minerals statements. The device is a digital filter IC rather than an automotive-qualified power component, so AEC-Q100 is recorded as not applicable based on the product function.
