PCM1802DB - 24-Bit 96 kHz Stereo Audio ADC | Texas Instruments
MPN: PCM1802DB ✓ نشطPCM1802DB نظرة عامة
An audio ADC converts left and right analog audio signals into digital sample data for transmission, recording, processing, or playback. The PCM1802DB uses a delta-sigma modulator with 64-times or 128-times oversampling, followed by a digital decimation filter and a high-pass filter that removes the DC component from the input signal. This architecture is part of the broader analog-to-digital converter, data-converter, signal-processing, and semiconductor hierarchy.
The device provides two single-ended analog input channels, a 24-bit conversion resolution, and a serial digital interface. Its analog supply operating range is 2.7 V to 3.6 V, while the digital supply range begins at 4.5 V according to the manufacturer product information. The 96 kHz sampling rate supports professional and consumer audio acquisition, including line-level stereo capture and digital audio recording.
The PCM1802DB is intended for audio interfaces, USB audio bridges, digital mixers, sound-card designs, broadcast equipment, and other systems that convert analog stereo audio into digital data. Its single-ended inputs simplify source connections compared with differential-input converters, although circuit design must still address analog signal conditioning, filtering, grounding, and digital-interface compatibility.
The 20-SSOP package requires careful PCB layout around the analog and digital sections. The manufacturer datasheet should be used as the authority for decoupling values, clock requirements, supported master and slave operating modes, pin assignments, and digital timing. This page combines the manufacturer product information with practical application guidance, engineering comparisons, and sourcing-oriented details.
بدائل مباشرة لـ PCM1802DB — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
PCM1802DBR
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
PCM1802DBG4
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
PCM1802U
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منها📋 بديل مرجعي (غير موجود في الكتالوج)
PCM1802DBRG4
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
PCM1802D
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منها📋 بديل مرجعي (غير موجود في الكتالوج)
PCM1802DB الحدود القصوى والخصائص الكهربائية
| Product Type | Stereo audio analog-to-digital converter |
| الدقة | 24 bit |
| معدل أخذ العينات | 96 kHz |
| Number of Channels | 2 channels |
| Input Type | Single-ended analog input |
| Data Interface | Serial |
| Architecture | Delta-sigma modulator |
| Oversampling Ratio | 64-times or 128-times |
| Analog Supply Voltage | 2.7 V to 3.6 V |
| Digital Supply Voltage | 4.5 V to 5.5 V |
| العلبة | 20-SSOP |
| نوع التركيب | Surface mount |
| Series | PCM1802 |
| حالة دورة الحياة | Active |
دليل تكوين أطراف PCM1802DB 20-ssop
تكوين الأطراف لـ PCM1802DB (حزمة 20-ssop). يتميز هذا المكوّن التناظري بأطراف الإدخال والإخراج وإمداد الطاقة. راجع ورقة بيانات الشركة المصنعة لتكوينات طرف إلغاء الإزاحة والتعويض والتمكين. مثالي لدوائر تكييف الإشارة والمضخمات.
لا تتوفر بيانات مفصلة لمخطط التوصيلات لـ PCM1802DB.
راجع ورقة البيانات للحصول على تكوين الأطراف الكامل.
التطبيقات النموذجية
PCM1802DB مناسب لـ 6 التطبيقs: USB Audio Interface, Digital Sound Card, Digital Audio Mixer, Line-Level Audio Recorder, Broadcast and Studio Monitoring, Consumer Audio Capture.
USB Audio Interface
The PCM1802DB fits a stereo USB audio interface because it converts two single-ended line-level channels at up to 24-bit resolution and 96 kHz sampling. The converter's separate 2.7 V to 3.6 V analog and 4.5 V to 5.5 V digital rails support clean partitioning between the input stage and serial interface circuitry. Its delta-sigma modulator, integrated decimation filter, and DC-blocking high-pass filter reduce the number of separate digital signal-processing blocks. Designers should preserve analog and digital return-current separation, place required bypass capacitors close to their supply pins, and select a host-side serial interface that supports the converter's clock and data timing.
موصى به
Digital Sound Card
PCM1802DB is appropriate for a stereo digital sound card requiring 24-bit conversion at up to 96 kHz. Its two single-ended analog inputs accept left and right audio channels directly, while the serial output transfers converted samples to a digital audio controller. The 20-SSOP package helps keep the converter compact, and the manufacturer-supported oversampling and decimation functions provide the core signal conversion path. For a practical design, establish analog and digital ground references carefully, route clock and serial signals away from sensitive input traces, and confirm master or slave clock operation with the system controller before finalizing the interface.
موصى به
Digital Audio Mixer
The PCM1802DB can form the stereo capture section of a digital audio mixer or signal processor. Two single-ended inputs, 24-bit resolution, and a maximum 96 kHz sample rate provide sufficient conversion capability for line-level source mixing and monitoring. Its integrated digital decimation and high-pass stages simplify the ADC function, while separate analog and digital supply domains help the designer isolate converter noise from digital processing circuitry. Input scaling should preserve signal headroom before the converter, and the analog amplifier and routing network should use short, shielded routes to reduce susceptibility to switching noise and ground-loop pickup.
موصى به
Line-Level Audio Recorder
For a compact line-level recorder, PCM1802DB provides a stereo, single-ended input path with 24-bit data at up to 96 kHz. The converter is suitable for recording professional or consumer sources when the preceding stage supplies a suitable voltage range and adequate headroom. The integrated high-pass filter removes DC offset at the converter inputs, while digital decimation prepares the oversampled modulator output for the digital audio stream. System-level performance will also depend on the input amplifier, clock jitter, grounding, and storage path, so the datasheet timing and electrical requirements should be treated as fixed design constraints.
موصى به
Broadcast and Studio Monitoring
PCM1802DB can support stereo capture in broadcast or studio monitoring equipment where 24-bit resolution and 96 kHz operation are useful for preserving source detail. Single-ended inputs simplify many line-level routing designs, while the device's decimation filter and DC-blocking high-pass filter provide essential conversion functions in one package. The separate supply rails are especially useful for keeping sensitive analog circuitry away from digital switching noise. A production design should include input protection, controlled gain staging, low-noise references, and clock distribution with short return paths, followed by verification against the manufacturer's recommended application circuit.
موصى به
Consumer Audio Capture
The PCM1802DB is suitable for consumer stereo capture products that need higher resolution than basic multimedia converters. Two single-ended inputs support left and right source channels, and the 96 kHz maximum rate accommodates high-resolution audio conversion. Its 20-SSOP footprint supports compact PCB layouts, while the integrated delta-sigma conversion, decimation, and DC-removal functions reduce external component count. Product designers should still provide stable analog and digital supplies, use short output data traces, maintain controlled clock routing, and prevent digital return currents from crossing the analog input reference path.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ PCM1802DB — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | PCM1802DBR | PCM1802DBG4 | PCM1802U | PCM1802DBRG4 | PCM1802D |
|---|---|---|---|---|---|---|
| Package | 20-SSOP | 20-SSOP | 20-SSOP | 20-SSOP | 20-SSOP | 20-SSOP |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Resolution | 24 bit | 24 bit | 24 bit | 24 bit | 24 bit | 24 bit |
| Sampling Rate | 96 kHz | 96 kHz | 96 kHz | 96 kHz | 96 kHz | 96 kHz |
| Number of Channels | 2 channels | 2 channels | 2 channels | 2 channels | 2 channels | 2 channels |
| Input Type | Single-ended analog input | Single-ended analog input | Single-ended analog input | Single-ended analog input | Single-ended analog input | Single-ended analog input |
| Analog Supply Voltage | 2.7 V to 3.6 V | 2.7 V to 3.6 V | 2.7 V to 3.6 V | 2.7 V to 3.6 V | 2.7 V to 3.6 V | 2.7 V to 3.6 V |
| Digital Supply Voltage | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V |
| Data Interface | Serial | Serial | Serial | Serial | Serial | Serial |
| Architecture | Delta-sigma modulator | Delta-sigma modulator | Delta-sigma modulator | Delta-sigma modulator | Delta-sigma modulator | Delta-sigma modulator |
أبرز الفروقات
- Integrated stereo conversion in a compact package (مقابلPCM1807)
- Clear separation of analog and digital supply domains (مقابلPCM1802DBR)
- Single-ended inputs simplify stereo routing (مقابلPCM1802DBG4)
ملاحظات التصميم
Separate the analog input and digital interface regions of the PCB, following the manufacturer datasheet pin-description table and recommended layout. Route clock and serial-data traces away from the single-ended audio inputs, keep analog traces short, and provide an uninterrupted ground reference beneath the analog section. This arrangement reduces coupling from digital switching activity into the high-impedance conversion input.
Design for separate analog and digital supply rails: 2.7 V to 3.6 V for the analog section and 4.5 V to 5.5 V for the digital section. Place the manufacturer-recommended bypass capacitors adjacent to their supply pins and verify startup, sequencing, and rail-noise behavior on the finished board. The component's two supply domains are central to achieving predictable audio performance.
Treat the serial clock as a high-speed digital signal even though the output data rate is relatively modest. Use a short, continuous route, avoid unnecessary stubs, and place any required termination close to the driver. Confirm clock polarity, data timing, and master or slave operation against the Texas Instruments PCM1802 documentation before finalizing the digital interface.
Do not assume that a similar stereo ADC is pin-compatible solely because its resolution and sampling rate match. PCM1807, for example, uses a 28-SSOP package rather than the PCM1802DB's 20-SSOP package and requires different pin mapping and supply arrangements. Also confirm the full-scale input voltage, master clock requirements, and analog input impedance before replacing an existing converter.
معلومات الامتثال
The manufacturer lists PCM1802DB as active. Compliance declarations were not established from the cited product pages, so each declaration remains unknown rather than assumed.
