PCM1804DB - 24-Bit 192kHz Stereo ADC | Texas Instruments
MPN: PCM1804DB ✓ AktifPCM1804DB Ringkasan
A delta-sigma audio ADC is a semiconductor that converts left- and right-channel analog voltages into high-resolution digital samples. It belongs to the ADC and DAC hierarchy, where an ADC performs the analog-to-digital conversion stage needed by digital audio equipment. The PCM1804 combines a precision delta-sigma modulator, a linear-phase antialias digital filter, and a high-pass filter that removes DC offset from the input signal.
Key features include support for 24-bit resolution, a maximum sampling rate of 192 kHz, fully differential stereo inputs, and PCM audio operation. The converter can also produce DSD-format data because its delta-sigma modulator operates from the same signal chain. The antialias filter limits out-of-band energy before the digitized signal reaches the audio processor, while the high-pass filter helps prevent DC offset from consuming digital headroom.
The PCM1804 uses an advanced CMOS process and integrates both converter channels in one package. Its 28-pin SSOP arrangement supports analog input, digital data, clock, control, and power connections. Linear-phase digital filtering is particularly useful in music-production equipment because it provides predictable passband behavior and helps reduce aliasing without introducing a steep magnitude distortion across the audio band.
Typical applications include professional audio interfaces, digital mixing consoles, multichannel audio recorders, studio monitors, broadcast equipment, and high-end consumer audio. Fully differential inputs are useful when the source can drive balanced analog signals, while the 192 kHz capability supports high-resolution recording workflows. The digital output can feed a suitable audio processor, DAC, or transport through the appropriate clock and data interface.
PCB design should keep the analog input and digital return paths separated, provide clean reference and supply connections, and follow the manufacturer’s recommended decoupling and layout arrangement. Because audio converters can resolve small signal details, thermal design and grounding are as important as nominal resolution. Confirm clock polarity, master-versus-slave operation, and format settings in the datasheet before finalizing the digital interface.
This product record combines the Texas Instruments device specifications, application guidance, verified package information, and drop-in comparison details in one engineering-focused reference. It also highlights practical design considerations for clocking, filtering, signal integrity, and PCB implementation that are not apparent from the MPN alone.
Alternatif penggantian untuk PCM1804DB — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.
Variasi di dalam seri ini
Model-series yang sama yang kompatibel dengan penggantian PCM1804DB (sama faktor bentuk dan footprint) — berbeda di dalam Converter Type, Maximum Sampling Rate, Package, Process Technology.
PCM1804S1IDBRQ1
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
PCM1804DB Rating Maksimal & Karakteristik Listrik
| Converter Type | Stereo delta-sigma audio A/D converter |
| Bit Resolution | 24 bit |
| Maximum Sampling Rate | 192 kHz |
| Number of Audio Channels | 2 channels |
| Analog Input Configuration | Fully differential stereo input |
| Dynamic Range | 112 dB typical |
| Signal-to-Noise Ratio | 111 dB typical |
| Total Harmonic Distortion Plus Noise | -102 dB typical |
| Digital Output Format | I2S |
| Digital Output Support | PCM audio and DSD format |
| Antialias Filter | Linear-phase digital filter |
| DC Offset Removal | Integrated high-pass filter |
| Process Technology | Advanced CMOS |
| Paket | 28-pin SSOP |
| Tipe Mounting | Surface mount |
PCM1804DB 28-pin ssop Diamant Konfigurasi Panduan
Konfigurasi pin untuk PCM1804DB (28-pin ssop pakai pakai). Komponen analog ini memiliki pin masukan, keluaran, dan pengirim daya. Lihat datasheet produsen untuk konfigurasi pin offset null, kompensasi, dan pengaktifan. Ideal untuk peralatan sinyal dan kabel penggandaran.
Tidak ada data diatribut pin yang tersedia untuk PCM1804DB.
Lihat ke: datasheet produk untuk konfigurasi pin penuh.
Aplikasi Umum
PCM1804DB cocok untuk 6 aplikasis: Professional Audio Interface, Digital Mixing Console, Studio Monitor Controller, Broadcast and Recording Equipment, High-Resolution Consumer Audio, Digital Audio Test and Measurement.
Professional Audio Interface
The PCM1804DB suits a professional stereo recording interface because it provides 24-bit conversion up to 192 kHz, 111 dB typical SNR, and -102 dB typical THD+N. Its fully differential inputs can receive balanced signals from a carefully designed microphone or line preamplifier, while the I2S output transfers both channels to a digital signal processor. Place the converter close to the analog input stage, maintain quiet ground returns, and follow the manufacturer’s clock and decoupling layout to preserve converter performance.
Direkomendasikan
Digital Mixing Console
A digital mixing console can use the PCM1804DB for stereo channel or bus conversion where 192 kHz sampling and 24-bit resolution are useful. The device’s two fully differential analog inputs support balanced line-level connections, while its antialias and DC-blocking functions form part of the front-end signal chain. Clock synchronization is critical when multiple converter channels must share a common audio clock, so establish a low-jitter master clock and consistent frame timing across the console backplane.
Direkomendasikan
Studio Monitor Controller
The PCM1804DB can capture balanced stereo analog signals in a studio monitor controller or mastering system. Its typical 112 dB dynamic range provides useful headroom above the noise floor, while -102 dB THD+N supports low-distortion monitoring paths. The I2S interface allows digital routing to a processor or DAC, but system-level performance still depends on the preamplifier, converter reference, analog input conditioning, and clock source. Verify the selected digital format and master/slave role during hardware bring-up.
Direkomendasikan
Broadcast and Recording Equipment
The PCM1804DB fits broadcast monitoring, multichannel recording, and professional audio acquisition systems requiring a compact stereo delta-sigma ADC. Its maximum 192 kHz rate supports high-resolution workflows, and the fully differential inputs are compatible with balanced studio wiring when common-mode control is maintained. Linear-phase antialias filtering helps constrain digital out-of-band content, while the high-pass filter removes DC offset. Confirm sample-rate conversion, clock distribution, and channel alignment in the complete signal path.
Direkomendasikan
High-Resolution Consumer Audio
The PCM1804DB supports high-grade consumer audio products that require balanced stereo inputs and high-resolution conversion without using the largest possible converter package. The 24-bit, 192 kHz capability is suitable for premium playback and recording products, while its integrated high-pass filter helps remove DC offset from source signals. For best results, pair it with a low-noise analog front end and a clean digital clock, and route analog and digital returns separately to reduce switching and clock noise reaching the converter.
Direkomendasikan
Digital Audio Test and Measurement
The PCM1804DB can serve as the acquisition element in an audio test instrument that measures source-level variation, distortion, and signal behavior. Its 24-bit resolution and 192 kHz maximum rate give the instrument adequate resolution for many professional test paths, while the I2S interface simplifies transfer into a test processor. The instrument must still control analog gain, input bandwidth, clock frequency, and format configuration accurately, since incorrect scaling or clocking can obscure the device’s 111 dB typical SNR performance.
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk PCM1804DB — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | PCM1804S1IDBRQ1 |
|---|---|---|
| Brand | Texas Instruments | Texas Instruments |
| Package | SSOP-28 (DB) | SSOP-28 (IDB) - same 28-pin SSOP footprint |
| Converter Type | Stereo delta-sigma A/D converter | Stereo delta-sigma A/D converter |
| Bit Resolution | 24 bit | 24 bit |
| Maximum Sampling Rate | 192 kHz | 192 kHz |
| Analog Inputs | Fully differential stereo input | Fully differential stereo input |
| Digital Output | I2S | I2S |
| Qualification Grade | Standard grade | PCM1804-Q1 automotive-qualified variant |
| Digital Filter | Linear-phase antialias filter and high-pass filter | Linear-phase antialias digital filter and high-pass filter |
Diferensiator Kunci
- Supports professional high-resolution stereo conversion (vsPCM1804S1IDBRQ1)
- Balanced analog input architecture (vsPCM1804S1IDBRQ1)
- Automotive-qualified route is available in the same family (vsPCM1804DB)
Catatan Desain
Keep the PCM1804DB analog input paths short, symmetric, and away from digital clock and data routing. Place input-network components close to the associated pins, use a continuous ground reference for the analog section, and route the analog return directly to the device ground rather than through noisy switching-current paths. Differential routing should maintain consistent impedance and geometry so common-mode noise and timing skew are minimized.
Treat the converter clock as a high-priority digital signal. Route the master clock or serial clock over a continuous reference plane, minimize stubs and test-point discontinuities, and keep clock traces away from fully differential analog inputs. If the device receives a system clock, confirm its frequency range and jitter tolerance from the manufacturer documentation before committing the PCB because clock instability can degrade conversion performance even when the nominal sampling rate is correct.
Use the supply values and decoupling arrangement specified in the Texas Instruments PCM1804 datasheet. Place the required ceramic capacitors at the relevant power pins with short ground returns, and avoid placing noisy regulator outputs or switching-current loops near the analog input section. The device is a digital IC rather than a power semiconductor, so a safe operating area chart does not apply; thermal design instead focuses on package power dissipation and adequate copper for the intended ambient conditions.
Confirm the serial interface mode, word alignment, clock polarity, master/slave role, and left/right channel timing before populating a prototype. A 192 kHz-capable converter can still produce invalid or unusable data if the frame clock and data clock are configured incorrectly. Also account for the integrated high-pass filter when DC content is part of the signal being measured, and verify the antialias response against the intended source bandwidth.
Informasi Konformitas
The standard PCM1804DB is not identified as an AEC-Q100-qualified ordering code; PCM1804S1IDBRQ1 is the PCM1804-Q1 automotive alternative.