TMC2242AKTC - 60MHz Digital Half-Band Filter | onsemi
部品番号: TMC2242AKTC ✗ 生産終了TMC2242AKTC 概要
A digital filter IC is a specialized signal-processing semiconductor that performs finite impulse response filtering directly on sampled digital data. The TMC2242AKTC belongs to the broader digital signal processing hierarchy: digital filter -> FIR/half-band filter -> video filter IC -> signal-processing semiconductor. Its half-band architecture reduces computationally intensive filtering requirements in interpolation and decimation paths while maintaining predictable passband and stopband behavior.
Verified distributor information identifies the device as a half-band filter with a selectable operating speed of 30, 40, or 60 MHz. The filter supports user-selectable interpolation gain and selectable 2:1 decimation, 1:2 interpolation, and equal-rate operating modes. Search results also identify a 12-bit input resolution and 16-bit output resolution, allowing the filter to operate between compact digital sources and higher-resolution downstream converters or processors.
The TMC2242A and TMC2242B families are described as pin-compatible with TMC2242, but the supplied verified data does not establish a complete pin table, voltage limits, clock timing, power consumption, operating temperature, or package-equivalent ordering codes. These values must therefore be confirmed in the manufacturer datasheet before a new circuit is released. The AKTC package is identified by authorized distributor listings as a 44-MQFP surface-mount package measuring 10 x 10 mm.
Typical uses include digital video interpolation and decimation, multimedia processing chains, communication-system sample-rate conversion, and equipment requiring a dedicated digital half-band filter. In a video path, the device can reduce the filtering burden placed on a DSP or FPGA. Selection should account for clock rate, data width, filter mode, power-supply requirements, output timing, and the exact 44-MQFP footprint documented by the manufacturer.
When prototyping, verify clock polarity, synchronous interface timing, data alignment, and control-pin states against the current manufacturer documentation. Treat distributor descriptions as catalog evidence rather than a substitute for the complete electrical specification. This page combines verified catalog data, sourcing information, application guidance, and clearly identified data gaps to support initial design review without presenting unsupported electrical claims.
ドロップイン代替品: TMC2242AKTC — 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TMC2242AKTC 最大定格＆電気的特性
| Product Type | Digital half-band interpolating/decimating filter |
| Input Resolution | 12 bit |
| Output Resolution | 16 bit |
| Maximum Stated Operating Speed | 60 MHz |
| Available Speed Grades | 30 MHz, 40 MHz, and 60 MHz |
| Interpolation Mode | 1:2 interpolation |
| Decimation Mode | 2:1 decimation |
| Equal-Rate Mode | Supported |
| Interpolation Gain | User selectable |
| Passband Ripple | Less than +/-0.01 dB |
| パッケージ | 44-MQFP, 10 x 10 mm |
| 実装タイプ | Surface mount |
TMC2242AKTC 44-mqfp, 10 x 10 mm ピン配置ガイド
TMC2242AKTC (44-mqfp, 10 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: TMC2242AKTC.
詳細は データシート をご参照ください。
主な用途
TMC2242AKTC の用途: 6 件s: Digital Video Interpolation, Digital Video Decimation, Sample-Rate Conversion, Multimedia Processor Signal Conditioning, Communication Data Filtering, Fixed-Function Video Filter.
Digital Video Interpolation
The TMC2242AKTC fits digital video interpolation paths that require a dedicated 1:2 half-band filter rather than a programmable DSP implementation. Its verified 12-bit input, 16-bit output, and selectable 30, 40, or 60 MHz speed grades provide a clear upgrade path as sample rates increase, while less than +/-0.01 dB passband ripple supports amplitude-sensitive video processing. The IC can sit between a parallel digital video source and a downstream converter, display interface, or processor. Using the dedicated interpolation mode can reduce filter-resource demand in an FPGA or DSP and improve implementation predictability. However, the designer must confirm clock polarity, control timing, data alignment, latency, and supply requirements in the manufacturer datasheet before routing the 44-MQFP footprint.
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Digital Video Decimation
TMC2242AKTC is appropriate for a 2:1 digital decimation stage that must reduce the sample rate of a 12-bit video stream while producing a 16-bit filtered output. The dedicated half-band function can replace a more computationally intensive FIR implementation, which may be valuable when an FPGA is already handling timing, storage, or graphics processing. Its selectable 30, 40, and 60 MHz grades allow the system designer to match the filter to the actual processing clock rather than operate every design at the maximum rate. Less than +/-0.01 dB passband ripple is useful for maintaining signal amplitude. Clock relationships, output latency, data handshake, and permissible input-output timing must still be validated against the complete manufacturer documentation.
おすすめ
Sample-Rate Conversion
The TMC2242AKTC can support a fixed-rate conversion chain when the required operation is limited to 1:2 interpolation, 2:1 decimation, or equal-rate half-band filtering. This makes it useful in multimedia equipment where standardized video clocks require deterministic filtering before a converter, encoder, or storage stage. The 12-bit input and 16-bit output widths permit integration between a source bus and a higher-resolution processing interface, while selectable 30/40/60 MHz grades provide flexibility across multiple clock domains. A dedicated filter may simplify firmware and reduce FPGA logic compared with a general-purpose processor solution. Designers should still verify clock-domain crossing strategy, output framing, control polarity, and whether an additional scaler or resampler is needed for ratios other than 2:1.
おすすめ
Multimedia Processor Signal Conditioning
TMC2242AKTC can provide deterministic half-band filtering between a multimedia source and a processing subsystem that expects a specific sample format. Its dedicated architecture avoids allocating programmable FIR coefficients and MAC operations for a straightforward rate-conversion function, potentially reducing FPGA resource use and firmware complexity. The 12-bit input and 16-bit output resolution make the part relevant to legacy digital-video signal chains, while the 60 MHz maximum stated speed supports higher-rate interfaces. Practical deployment requires checking whether the processor accepts the filter's data timing and whether the output contains the expected alignment, framing, and latency. Power, clock jitter, and output-signal integrity should be evaluated with the complete electrical specification rather than inferred from catalog data.
おすすめ
Communication Data Filtering
The TMC2242AKTC can be evaluated for communication equipment that uses a fixed 2:1 or 1:2 processing stage and benefits from a dedicated half-band filter. Its selectable speed grades permit operation at 30, 40, or 60 MHz, and its 12-bit input and 16-bit output widths are suitable for many digital interface chains. The less than +/-0.01 dB passband ripple helps preserve in-band amplitude while the interpolating and decimating modes address common rate-conversion tasks. For a communication design, however, the device's complete stopband rejection, group-delay behavior, clock-jitter tolerance, output noise, and power figures must be confirmed before it is treated as a radio-frequency or communications-grade filter. Those specifications were not included in the supplied excerpts.
おすすめ
Fixed-Function Video Filter
TMC2242AKTC is well suited to a fixed-function video filter where predictable hardware behavior is preferable to programmable filter coefficients. The dedicated half-band architecture supports selectable interpolation gain, 2:1 decimation, 1:2 interpolation, and equal-rate modes, allowing one device to cover several common processing configurations. Its 44-MQFP (10 x 10 mm) package provides a surface-mount implementation for compact multimedia boards, while the 30/40/60 MHz choices allow clock-specific sourcing. Compared with implementing the same filter in an FPGA, the dedicated IC can simplify the design and reduce software overhead, but it offers less flexibility for arbitrary responses. Before layout release, confirm the exact terminal map, exposed-pad requirements, supply rails, input-output timing, and mode-control truth table.
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: TMC2242AKTC — 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 |
|---|---|
| Product Type | Digital half-band interpolating/decimating filter |
| Brand | onsemi |
| Package | 44-MQFP, 10 x 10 mm |
| Input Resolution | 12 bit |
| Output Resolution | 16 bit |
| Maximum Stated Operating Speed | 60 MHz |
| Available Speed Grades | 30 MHz, 40 MHz, and 60 MHz |
| Interpolation Mode | 1:2 interpolation |
| Decimation Mode | 2:1 decimation |
| Passband Ripple | Less than +/-0.01 dB |
| Verified Catalog Price | $4.5690 per unit as of 2026-10-28 |
| Equal-Rate Mode | Supported |
主な差別化要因
- Dedicated half-band processing reduces filter logic demand （vs Programmable DSP or FPGA implementation)
- Supports multiple clock-rate grades （vs A single-speed fixed filter implementation)
- Input and output widths support mixed-resolution video chains （vs A same-width general-purpose filter path)
設計ノート
Treat the 44-MQFP footprint as an exact mechanical and electrical commitment. Before routing the board, obtain the current manufacturer package drawing and verify pin 1 orientation, exposed-pad dimensions, land pattern, paste apertures, and solder-mask clearance. Because the supplied verified text identifies the package as 44-MQFP (10 x 10 mm) but does not provide a complete verified terminal map, do not derive connections from fragmented search snippets.
Confirm clock polarity, clock-to-data timing, output framing, and data alignment directly from the manufacturer timing diagrams. The verified catalog data establishes 12-bit input, 16-bit output, and selectable 30/40/60 MHz grades, but it does not establish setup time, hold time, propagation delay, or allowed input/output skew. Keep clock and data routing short, use a controlled reference plane, and avoid unnecessary stubs between the source device, TMC2242AKTC, and downstream logic.
The actual supply voltage and current consumption are missing from the supplied data, so power loss cannot yet be estimated reliably. Once those values are verified, use P = VIN x I as an initial estimate and account for operating-mode dependence. Provide local input and output decoupling according to the manufacturer layout guidance, and keep the return-current path short around every supply terminal. Do not assign a voltage rail until the datasheet's absolute maximum and recommended operating limits are confirmed.
Do not assume that every TMC2242-family ordering code is interchangeable. The supplied data says TMC2242A and TMC2242B are pin-compatible with TMC2242, but complete suffix combinations, package dimensions, speed grades, and electrical limits are not shown. For any substitution, verify the actual 44-MQFP footprint, terminal functions, control truth table, supported mode, clock rate, logic levels, and power requirements rather than relying only on the base family name.
コンプライアンス情報
The supplied verified catalog excerpts do not contain RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations. Obtain current compliance documentation from onsemi before using the component in a regulated or automotive design.
