PCM1760P - 20-Bit Dual-Input ADC | Texas Instruments
部品番号: PCM1760P ✓ 生産中PCM1760P 概要
An ADC converts continuous analog voltage signals into numerical data for processing, storage, or transmission. The PCM1760P belongs to the sigma-delta ADC family, whose architecture uses continuous-time modulation and digital filtering to shape quantization noise away from the signal band. In the broader component hierarchy, it is an ADC within the ADC/DAC category, which forms part of mixed-signal and data-conversion semiconductor systems used in professional audio, communications, instrumentation, and consumer equipment.
The principal device features include two analog input channels, 20-bit conversion resolution, and operation at up to 48 kHz. Its multi-bit enhanced-noise-shaping architecture is intended to improve in-band conversion performance, while the associated decimating digital-filter section supports practical audio-rate output. The dual-channel arrangement allows simultaneous or multiplexed capture of stereo audio without requiring two separate converter packages. A 28-pin PDIP package also supports conventional through-hole PCB assembly and prototype rework.
PCM1760P combines a multi-bit monolithic modulator with a monolithic decimation digital filter. In operation, each analog input is sampled and converted by the modulator before the digital filter removes high-frequency quantization noise and reduces the conversion rate. This division between analog modulation and digital filtering is central to the performance of the device. The resulting 20-bit, 48 kHz conversion capability is suited to systems that require greater nominal resolution than conventional low-cost audio converters while retaining a straightforward external interface architecture.
Typical uses include stereo audio capture, professional recording equipment, broadcast monitoring, consumer audio equipment, and instrumentation requiring two-channel sampling. In each case, the ADC converts the left and right analog channels into digital samples while the internal decimation process controls out-of-band noise. System designers should also consider clock quality, analog input conditioning, grounding, decoupling, and digital-interface timing because these external factors can materially affect the converter's measured performance.
For PCB implementation, place bypass capacitors close to the device supply pins and route analog and digital returns carefully to minimize shared-impedance coupling. The through-hole package simplifies inspection and manual rework, but it occupies considerably more board area than most surface-mount audio converters. Confirm clock requirements and interface signal levels against the manufacturer pin description and application guidance before finalizing the schematic.
This product page combines the manufacturer-level architecture information, exact package and conversion specifications, application guidance, and drop-in-replacement evaluation for PCM1760P sourcing and engineering review. It is intended to help buyers identify the correct 28-pin audio ADC while providing practical context for signal-chain design and board implementation.
ドロップイン代替品: PCM1760P — 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PCM1760P 最大定格＆電気的特性
| Converter Type | Sigma-delta ADC |
| 分解能 | 20 bit |
| Number of Inputs | 2 analog inputs |
| サンプリングレート | 48 kHz |
| Architecture | Multi-bit enhanced-noise-shaping conversion system |
| Modulator | Dual 20-bit monolithic modulator |
| Digital Filter | Monolithic decimating digital filter |
| THD+N | -92 dB typical |
| Maximum THD+N | -90 dB |
| パッケージ | 28-pin PDIP |
| 実装タイプ | Through-hole |
| Terminal Count | 28 terminals |
| Package Shape | Rectangular |
| Temperature Grade | Commercial |
PCM1760P rectangular ピン配置ガイド
PCM1760P (rectangular 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: PCM1760P.
詳細は データシート をご参照ください。
主な用途
PCM1760P の用途: 6 件s: Stereo Audio Capture, Professional Recording Equipment, Broadcast Monitoring, Consumer Audio Equipment, Instrumentation and Test Equipment, Industrial Audio Monitoring.
Stereo Audio Capture
PCM1760P fits a stereo capture front end that requires two analog channels, 20-bit nominal resolution, and 48 kHz conversion in a single through-hole package. Its dual multi-bit enhanced-noise-shaping modulator and decimating digital filter provide a manufacturer-stated THD+N of -92 dB typical and -90 dB maximum. Place the converter behind balanced or single-ended input conditioning networks, connect both channels to the appropriate analog pins, and route its digital output to the system audio controller. Careful grounding, local bypass capacitance, and a clean clock remain essential for preserving the converter's specified performance in the complete signal chain.
Professional Recording Equipment
The PCM1760P is appropriate for professional recording and monitoring equipment that digitizes stereo channels at 48 kHz with 20-bit nominal resolution. Its dual-channel architecture reduces the converter count for a stereo input section, while the -92 dB typical THD+N specification gives a defined baseline for signal-chain evaluation. The 28-pin PDIP format also supports hand assembly and field replacement in equipment where through-hole serviceability is valuable. The implementation should still include shielded analog routing, controlled source impedances, stable supply rails, and clock distribution that meets the interface timing requirements of the Texas Instruments PCM1760P manufacturer datasheet.
Broadcast Monitoring
PCM1760P can support dual-channel broadcast monitoring, program-audio capture, and quality-control systems operating at 48 kHz. Two inputs allow stereo program monitoring to be converted without duplicating the converter subsystem, and the multi-bit enhanced-noise-shaping architecture helps move quantization noise outside the intended audio band. For installation in broadcast equipment, place the converter away from switching supplies and high-level video circuitry, use a low-impedance return strategy, and verify input levels against the converter's analog input constraints. The system's measured noise and distortion should be evaluated with the complete preamplifier because analog gain stages can materially affect the final THD+N.
Consumer Audio Equipment
PCM1760P suits consumer audio products requiring a conventional 48 kHz stereo conversion stage, such as powered speakers, digital recording accessories, and legacy playback or capture equipment. Its 20-bit resolution provides more nominal conversion depth than an 8-bit or 16-bit-class converter, while the decimating digital filter is integral to the conversion system. The 28-pin through-hole package is useful for product revisions that retain through-hole construction or require simple manual servicing. A practical design must include input coupling or attenuation as required, stable supply filtering, and logic levels that match the receiving controller to prevent data-interface errors.
Instrumentation and Test Equipment
PCM1760P can serve dual-channel audio instrumentation, vibration-monitoring front ends, and laboratory signal-capture systems that sample at 48 kHz. The converter's two inputs support paired measurements, while its 20-bit sigma-delta architecture is appropriate for dynamic waveforms with noise distributed away from the signal band. Instrumentation designs should pay particular attention to source impedance, input overload, clock stability, and isolation from motors or relay contacts. Use a quiet reference and supply arrangement, and verify whether the application's required signal bandwidth and sample rate remain within the operating characteristics stated in the Texas Instruments PCM1760P manufacturer datasheet.
Industrial Audio Monitoring
PCM1760P is appropriate for industrial monitoring systems that capture two related acoustic or vibration channels at 48 kHz. The dual 20-bit conversion capability provides a compact signal front end for machinery analysis, condition monitoring, and sound-event recording, while the -90 dB maximum THD+N specification establishes a defined distortion target. Industrial implementations should electrically isolate the analog inputs from high-energy machinery wiring, include robust surge and grounding provisions, and keep digital return currents out of the converter's analog reference path. The 28-pin PDIP package supports through-hole maintenance strategies in larger control cabinets where component-level serviceability may outweigh board-area savings.
エンジニアリング参考データ: PCM1760P — 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 |
|---|---|
| Package | 28-pin PDIP |
| Brand | Texas Instruments |
| Converter Type | Sigma-delta ADC |
| Resolution | 20 bit |
| Number of Inputs | 2 analog inputs |
| Sampling Rate | 48 kHz |
| THD+N | -92 dB typical; -90 dB maximum |
| Architecture | Multi-bit enhanced-noise-shaping with decimating digital filter |
| Mounting Type | Through-hole |
| Temperature Grade | Commercial |
主な差別化要因
- Integrated dual-channel 20-bit conversion （vs ADS1271)
- Manufacturer-defined dynamic-performance target （vs ADS1271)
- Serviceable through-hole implementation （vs ADS1271)
設計ノート
Route the PCM1760P analog inputs away from digital outputs, clock lines, relay contacts, and high-current supply paths. Place the required bypass capacitors immediately adjacent to their supply pins and use a continuous ground plane for analog return current. The 20-bit converter should be evaluated in its complete input network because source impedance, anti-alias filtering, and grounding can affect distortion and conversion noise even when the device meets its specified THD+N.
Treat the converter clock as a critical digital signal even though the package is mounted through-hole. Route the clock away from analog inputs, use a low-impedance source, and avoid adding long test-point stubs where clock jitter could affect conversion performance. Validate the complete interface with the manufacturer's timing definitions because data corruption or timing margin problems can mimic converter-quality issues in a digital audio system.
Do not assume that any ADC advertised with 20-bit resolution is a replacement for PCM1760P. A drop-in substitution must reproduce the 28-pin PDIP footprint, pin functions, clocking method, digital interface, electrical limits, and 48 kHz conversion behavior. ADS1271 appears in general replacement-search results, but those results do not establish pin-to-pin compatibility with PCM1760P and therefore do not support a PCB-level substitution.
Use stable, low-noise supply and reference arrangements and follow the decoupling network specified by the Texas Instruments PCM1760P manufacturer datasheet. Keep switching-regulator energy away from the analog input and reference nodes, and connect local capacitor returns directly to the appropriate ground reference. Confirm the power-up sequence and digital-output state against the manufacturer guidance so downstream equipment is not exposed to undefined data during initialization.
The 28-pin PDIP package provides generous copper-contact area for conventional through-hole thermal conduction, but actual temperature rise depends on the PCB, airflow, and nearby heat sources. For equipment with high ambient temperature or sustained high conversion activity, route heat away from the converter and monitor its operating temperature against the applicable device limit. Do not assume the commercial package construction permits operation above the manufacturer-specified environmental ratings.
コンプライアンス情報
The PCM1760P is identified as a commercial-grade Texas Instruments component, but explicit RoHS, REACH, lead-free, halogen-free, and conflict-minerals declarations were not identified in the available product information.