PCM55HP - 16-Bit Audio DAC | Texas Instruments
MPN： PCM55HP ✗ 停產PCM55HP 概覽
A digital-to-analog converter, or DAC, converts digital code values into proportional voltage or current. A parallel DAC accepts several bits simultaneously, making it suitable for systems in which a processor or digital audio interface can present a complete conversion word within the converter’s acquisition interval. The PCM55HP belongs to the broader semiconductor and signal-conversion hierarchy: DAC, data converter, interface IC, and audio signal-processing component.
The PCM55HP combines a 16-bit parallel input stage, a current-switched resistor network, an internal low-noise reference, and an output amplifier on one monolithic IC. The manufacturer material identifies parallel input format, 16-bit resolution, 15-bit typical monotonicity, ±1 mA audio output, 92 dB THD for the K grade, 96 dB dynamic range, and operation from ±12 V supplies. These specifications place the device in the audio DAC category rather than in general-purpose low-power or high-speed converter families.
Typical uses include digital audio playback, audio synthesis, sound-generation instruments, test equipment, and legacy audio systems. The parallel data interface can simplify connection to a suitable digital source, while the analog output requires appropriate output-network and signal-conditioning design. Because the device is a high-voltage, multi-supply audio converter, system designers should verify signal levels, grounding, bypass capacitors, and output-load requirements against the manufacturer datasheet before production use.
A key design consideration is supply and analog-output implementation. The PCM55HP uses positive and negative power rails, so the circuit must provide adequate bypassing and maintain a clean reference ground. The output stage and external reconstruction or filtering network should be designed to preserve the converter’s intended audio bandwidth and distortion performance.
This page consolidates the verified PCM55HP identity, datasheet links, sourcing information, package data, and design-oriented guidance into one engineering reference. It also distinguishes verified manufacturer information from parameters that require confirmation for the exact grade, package variant, sourcing channel, or system configuration.
直接替換替代品，適用於 PCM55HP — 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。
PCM55HP/1K
✅ 直接替換📋 參考替代品（不在目錄中）
PCM55HPG6
✅ 直接替換📋 參考替代品（不在目錄中）
PCM55HP/1KG6
✅ 直接替換📋 參考替代品（不在目錄中）
PCM55HP/1K
✅ 直接替換📋 參考替代品（不在目錄中）
PCM55HPG6
✅ 直接替換📋 參考替代品（不在目錄中）
PCM55HP 最大額定值與電氣特性
| Product Type | 16-bit monolithic digital-to-analog converter |
| Input Format | Parallel |
| 解析度 | 16 bits |
| Typical Monotonicity | 15 bits |
| THD, K Grade | 92 dB |
| Dynamic Range | 96 dB |
| Settling Time | 3 µs |
| 輸出類型 | ±1 mA audio output |
| 供應電壓 | ±12 V |
| 封裝 | 24-pin SOP |
| Package Pin Count | 24 pins |
| 安裝類型 | Surface mount |
| Terminal Form | Gull wing |
| Temperature Grade | Commercial |
| Channel Count | 1 channel |
| Data Interface | 16-bit parallel |
PCM55HP 24 pins 腳位配置指南
PCM55HP（24 pins 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： PCM55HP.
請參閱 資料表 以查看完整腳位配置。
典型應用
PCM55HP 適用於 6 應用s: Digital Audio Playback, Audio Signal Synthesis, Instrument and Test-Signal Generation, Sound-Card and Legacy Audio Systems, Broadcast and Audio Processing, Precision Analog Signal Conversion.
Digital Audio Playback
The PCM55HP fits legacy digital audio playback systems that can present a 16-bit parallel word to the converter. Its 16-bit resolution, 3 µs settling time, and ±1 mA audio output provide a defined conversion path from digital source data to an analog audio signal. The design must include compatible parallel data timing, ±12 V supplies, output loading, and reconstruction filtering. Because the verified information describes a bipolar analog output, the external signal path should be designed around current-mode operation rather than assuming an ordinary voltage-output DAC.
推薦
Audio Signal Synthesis
The PCM55HP can serve as the final conversion stage in an audio synthesizer or digital sound-generation instrument. Its 16-bit parallel interface allows the system controller to update the converter word directly, while the 3 µs settling time helps define the allowable update interval. The key engineering concern is maintaining a clean analog path around the ±1 mA output and ±12 V rails. External filtering, grounding, and output-stage design should be validated for the required bandwidth and distortion target.
推薦
Instrument and Test-Signal Generation
The PCM55HP is relevant to test and measurement equipment that generates controlled audio waveforms from parallel digital data. Its 16-bit resolution provides a defined code width, and its manufacturer-listed 96 dB dynamic range can support precise low-level signal generation when the complete external circuit is designed consistently. The bipolar supply arrangement and current output require careful reference grounding and filtering. Before using it in an instrument, verify settling behavior, output linearity, load impedance, and calibration requirements with the exact grade datasheet.
推薦
Sound-Card and Legacy Audio Systems
The PCM55HP is suited to older sound-card, digital-audio interface, and laboratory audio designs that expose a parallel digital bus. Its 24-pin SOP package and parallel input architecture align with systems designed around older converter families rather than compact serial-audio DACs. The design advantage is straightforward parallel connection; the trade-off is the need for dual high-voltage supplies and a carefully designed analog output network. Confirm pinout, timing, and package land pattern from the manufacturer documentation before replacing an existing converter.
推薦
Broadcast and Audio Processing
The PCM55HP may be used in specialized broadcast or audio-processing equipment where a parallel converter interface and analog current output are acceptable. Its 92 dB THD specification for the K grade and 96 dB dynamic range provide useful design targets, but actual system performance depends on the output stage, reconstruction network, clocking, and power-supply implementation. The device is not a modern digital audio interface solution, so it is most appropriate where the existing architecture already supports parallel data and bipolar analog circuitry.
推薦
Precision Analog Signal Conversion
The PCM55HP can be considered for precision analog signal conversion when the application accepts its 16-bit parallel architecture and bipolar output stage. The verified specifications include 15-bit typical monotonicity and 3 µs settling time, which help define conversion resolution and timing. The circuit should minimize digital-to-analog crosstalk by keeping clock and data routing controlled, while preserving the converter’s reference and output networks. Exact monotonicity, linearity, reference accuracy, and temperature limits must be confirmed from the complete manufacturer datasheet for the selected grade.
推薦
推薦產品摘要
工程參考資料，適用於 PCM55HP — 比較、設計指引及合規資訊。
選型指南
主要差異化特點
- Parallel input architecture (對比PCM55HP/1K)
- Specified audio performance (對比PCM55HPG6)
- Same-package sourcing variants (對比PCM55HP/1KG6)
設計說明
Design the supply rails and bypass network for the PCM55HP’s ±12 V bipolar operating requirement. Place low-inductance bypass capacitors close to the supply pins and provide a quiet return path for the analog output. Because the verified material does not include exact decoupling values, derive them from the complete manufacturer datasheet rather than using generic values. Check startup, rail sequencing, and ground offsets before enabling the converter.
Route the 16-bit parallel data bus away from sensitive analog output and supply-return paths. Use a consistent source timing budget based on the verified 3 µs settling time, and keep data lines sufficiently short to avoid introducing excessive skew between bits. The PCM55HP is a legacy parallel-interface device, so processor fanout and connector routing can materially affect data integrity and converter noise.
Do not treat PCM55HP, PCM55HP/1K, PCM55HPG6, or PCM55JP as interchangeable solely because the family names are similar. Confirm the complete ordering code, package, pinout, supply requirements, output circuit, temperature grade, and timing before substitution. The verified data supports same-family 24-SO variants but does not provide enough information to certify every listed candidate as a universal drop-in replacement.
合規資訊
The supplied verified data does not provide current RoHS, REACH, lead-free, halogen-free, or conflict-minerals statements for PCM55HP. The product is listed as commercial-grade by a distributor result, but this does not establish AEC-Q100 qualification.
