DSPA56371AF150 - 150MHz 24-Bit Audio DSP | NXP Semiconductors
部品番号: DSPA56371AF150 ✗ 生産終了| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.4 | $114.00 |
| 100 | $10.2 | $1,020.00 |
| 500 | $9.3 | $4,650.00 |
| 1,000 | $8.6 | $8,600.00 |
DSPA56371AF150 概要
A digital signal processor is a specialized microprocessor whose architecture is optimized for the fast, real-time mathematical operations required in digital signal processing, such as multiply-accumulate (MAC) filtering, Fourier transforms, and audio codec workloads. Within the signal-chain hierarchy, a DSP sits between general-purpose microcontrollers and fixed-function audio decoders, offering programmable flexibility with DSP-grade throughput. The DSP56371 belongs to the DSP56300 family -> embedded DSP -> digital signal processor -> semiconductor taxonomy.
Key features include a 24-bit DSP56300 core executing at 150 MHz, an instruction set and on-chip peripherals specifically tailored for multichannel audio processing, and support for delay management, bass management and surround-sound decoding workloads described in the NXP product overview. The 24-bit data width matches the native word size of professional and consumer audio streams, avoiding truncation error in filter computations.
Architecturally, the DSP56300 family uses a Harvard-style bus structure with separate program and data memory spaces and hardware MAC units, which sustains one multiply-accumulate per instruction cycle - the workhorse operation of audio IIR/FIR filtering and convolution. On-chip memory and serial audio interfaces allow direct connection to audio ADCs/DACs and receivers.
Typical applications include audio/video (AV) receivers, home theater systems, surround-sound decoders, mini stereo systems, digital TV audio systems and automotive audio systems, per the official NXP product page.
Design consideration: this device is End-of-Life per NXP, so new designs should secure lifetime stock or plan a replacement strategy before layout freeze; verify the current NXP discontinuance PCN before committing.
This page synthesizes distributor pricing, drop-in same-family alternatives (DSPB56371AF150, DSPC56371AF180), and practical design notes not found in the manufacturer datasheet alone.
ドロップイン代替品: DSPA56371AF150 — 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: DSPA56371AF150 （同一形状・フットプリント） — 相違点: Package, Audio Decoder Support, Core, Core Clock Frequency, Product Series.
クイック比較ツール — 並列比較する代替部品を選択:
DSPB56371AF150
✅ ドロップイン✓ 在庫あり
$13.9 / 個
データシートを見る →DSPC56371AF180
✅ ドロップイン✓ 在庫あり
$66 / 個
データシートを見る →DSPA56371AF150 仕様
| Core | DSP56300 family 24-bit DSP core |
| Core Frequency | 150 MHz |
| Data Width | 24-bit |
| Product Series | DSP56371 (DSP371) |
| Target Applications | AV receivers, home theater, surround sound decoders, digital TV and automotive audio |
| Audio Decoder Support | Dolby, THX, DTS and other latest-generation decoders |
| On-chip Functions | Delay management, bass management, audio post-processing |
| パッケージ | TQFP-80 |
| 実装タイプ | Surface Mount |
| ライフサイクル状態 | End of Life (per NXP product page) |
DSPA56371AF150 tqfp-80 ピン配置ガイド
DSPA56371AF150 (tqfp-80 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: DSPA56371AF150.
詳細は データシート をご参照ください。
主な用途
DSPA56371AF150 の用途: 6 件s: Audio/Video (AV) Receivers, Home Theater and Surround Sound Decoders, Mini Stereo Systems, Digital TV Audio Systems, Automotive Audio Amplifiers, Professional and Installed Sound Processing.
Audio/Video (AV) Receivers
The DSPA56371AF150 fits AV receiver designs because its 150 MHz 24-bit DSP56300 core provides the MIPS and numeric precision needed to run multichannel surround decoders (Dolby, THX, DTS) concurrently with bass management, delay management and room-equalization filters. In a typical receiver mainboard, the DSP sits between the HDMI/audio front-end and the multichannel DAC, receiving I2S-style serial audio, decoding and post-processing it, then outputting 5.1/7.1 channels. The 24-bit data path preserves the 16-24 bit source dynamic range through cascaded biquad filter banks without audible truncation error, and the single-cycle MAC architecture sustains the filter load at 48/96 kHz sample rates with timing margin for future firmware features.
おすすめ
Home Theater and Surround Sound Decoders
For dedicated surround-sound decoder platforms, the DSPA56371AF150 offers a proven, decoder-ready processing platform: NXP documents support for the latest generation Dolby, THX and DTS decoder suites, so manufacturers license certified decoder libraries and run them directly on the 150 MHz core. Its on-chip delay management suits the speaker-distance compensation required in home theater calibration, while bass management redirects low-frequency content to the subwoofer channel per THX alignment practice. The single-chip approach replaces multiple fixed-function decoder ICs, reducing BOM cost. Designers should budget DSP MIPS across decoder, equalization and room-correction tasks; at 150 MHz there is measurable headroom, but the 180 MHz DSPC56371AF180 variant can be drop-in substituted if firmware grows.
おすすめ
Mini Stereo Systems
Compact mini/hi-fi stereo systems benefit from the DSPA56371AF150's integration: one 24-bit DSP at 150 MHz handles source decoding, tone control, loudness, dynamic bass boost and stereo widening that would otherwise require several analog or ASIC stages. The DSP56371's serial audio interfaces connect directly to CD/USB/Bluetooth audio sources and to the class-D or class-AB power amplifier path, keeping the signal chain fully digital until the final power stage. This minimizes PCB area - valuable in the shallow chassis typical of mini systems - and allows feature upgrades through firmware. Because the part is EOL, mini-system manufacturers building service-life stock should pair last-time-buy quantities of DSPA56371AF150 with the pin-compatible DSPB56371AF150 as a second source.
おすすめ
Digital TV Audio Systems
In digital TV audio boards, the DSPA56371AF150 processes broadcast audio - de-embedding, decoding, and leveling - before driving TV speakers or an external audio return path. Its 150 MHz core runs decoder plus loudness management (e.g., night-mode dynamic range control) concurrently, and the 24-bit path preserves quality across sample-rate conversions between broadcast rates and speaker playback rates. NXP explicitly lists digital TV audio among the DSP56371's target markets. The TQFP-80 surface-mount package suits the thin, thermally constrained PCBs of TV mainboards, dissipating its modest DSP-level power without heatsinking. Firmware-level audio features (virtual surround, dialog enhancement) can be added across TV model families on one hardware platform.
おすすめ
Automotive Audio Amplifiers
Automotive audio head units and external amplifiers use the DSP56371 family, as stated on the NXP product page, for cabin equalization, road-noise compensation, surround decoding and speaker delay/bass management. The 24-bit core at 150 MHz delivers the deterministic processing needed for 6-12 speaker zones, while its serial audio ports interface with automotive audio DACs/ADCs and digital optical inputs. Designers must select the qualification grade (DSPB/DSPC variants) matching the automotive temperature and quality requirements, and - given the EOL status - lock lifetime-buy volumes with their distributor early. Thermal design is straightforward: DSP-level dissipation in a TQFP-80 is handled by standard 2-oz copper pours on the automotive PCB.
おすすめ
Professional and Installed Sound Processing
Installed-sound applications - conference rooms, worship venues, commercial paging - can use the DSPA56371AF150 as the processing heart of a fixed-function DSP card: its 150 MHz, 24-bit single-cycle-MAC architecture comfortably runs the mixing matrices, feedback suppressors and 31-band equalizers typical of installed audio, and decoder support adds surround capability where needed. Compared with re-designing around a modern general-purpose audio SoC, reusing the DSP56371 with proven decoder firmware shortens qualification, which matters for repair/legacy service of installed equipment - one of the main remaining use cases for EOL parts. Sourcing from broker stock with verified date codes, or substituting the pin-compatible DSPB56371AF150, keeps service fleets running without PCB changes.
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: DSPA56371AF150 — 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 | DSPB56371AF150 | DSPC56371AF180 |
|---|---|---|---|
| Package | TQFP-80 | TQFP-80 - same | TQFP-80 - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core Frequency | 150 MHz | 150 MHz | 180 MHz |
| Data Width | 24-bit | 24-bit | 24-bit |
| Core Family | DSP56300 (DSP56371/DSP371) | DSP56300 (DSP56371/DSPB371) | DSP56300 (DSP56371/DSPC371) |
| Audio Decoder Support | Dolby, THX, DTS and other latest-generation decoders | Same decoder set (identical core/peripherals) | Same decoder set, more MIPS headroom |
| Target Applications | AV receivers, home theater, digital TV, automotive audio | Same application set | Same application set |
主な差別化要因
- Purpose-built audio decoder platform （vs DSPC56371AF180)
- Grade selection flexibility within one footprint （vs DSPB56371AF150)
- Honest trade-off: EOL availability （vs DSPB56371AF150)
設計ノート
The DSPA56371AF150 is End-of-Life per the NXP product page, which also hosts the Discontinuance and Replacement Product Change Notice. Before any new layout or last-time-buy, download the PCN from nxp.com/part/DSPA56371AF150 and confirm the final order window and recommended replacement. Buying broker stock without checking the PCN risks acquiring parts with restricted warranty or unknown storage history; always request date codes and certificates of conformance for EOL DSP purchases.
Estimated: DSP56300-family devices typically use a 3.3 V supply domain, but the exact core/IO voltage split for the DSP56371 must be confirmed in the official datasheet before power-tree design. Budget a clean analog/digital supply partition with local 100 nF decoupling at each supply pin pair plus bulk 10 uF per rail, and sequence supplies per the datasheet power-up ordering to avoid latch-up. Measure actual core current under full decoder load during firmware bring-up rather than relying on typical figures alone.
For the TQFP-80 footprint, place the 100 nF ceramic decoupling capacitors within 2-3 mm of the supply pins on the top layer with direct via stitching to the ground plane. Route the serial audio interfaces (I2S-style clocks and data) as short, matched traces away from crystal and clock lines to keep jitter low - audio clock jitter directly raises the converter noise floor. Provide an unbroken ground plane under the DSP; do not route digital address/data buses across the audio return path.
The 150 MHz core clock and its PLL harmonics can couple into the audio serial bit clock if layout is careless. Use a dedicated clean clock tree for the audio master clock (typically derived from a low-jitter crystal or clock generator), and keep the DSP core PLL loop filter components exactly per datasheet values. If substituting the 180 MHz DSPC56371AF180, re-verify supply decoupling and thermal margins, since core current rises roughly proportionally with clock frequency.
コンプライアンス情報
Compliance details were not present in the provided web data; confirm on the NXP product page Environmental Quality section. AEC-Q100 qualification is marked not_applicable pending datasheet confirmation of automotive grade status.
