PCM1789PWR - 24-Bit 192kHz Stereo DAC | Texas Instruments
N.º da peça: PCM1789PWR ✓ AtivoPCM1789PWR Visão geral
An audio digital-to-analog converter, or audio DAC, converts digital PCM samples into analog voltage signals suitable for headphone, line-level, or power-amplifier inputs. Within the signal-chain hierarchy, the PCM1789 is an audio DAC, a data-converter IC, and a signal-conversion device used between a digital audio source and an analog output stage. Differential outputs can support balanced analog connections while reducing sensitivity to ground-borne noise.
Key features include software-programmable digital attenuation, soft mute, de-emphasis, and user-programmable hardware control functions. The control architecture supports three-wire SPI-compatible and two-wire I2C-compatible serial interfaces, while the audio data interface supports I2S-format operation. These features allow the converter to be configured for attenuation levels, mute behavior, and system operating modes without requiring a separate external control controller for every adjustment.
The enhanced multi-level delta-sigma modulator is designed for high-resolution playback while supporting a broad range of sample rates. Differential analog outputs provide two audio channels, and the available interface options make the device suitable for systems using either serial control buses or discrete hardware-control lines. The reported 113 dB SNR makes the PCM1789 relevant to high-fidelity audio equipment where dynamic-range margin is important.
Typical applications include premium CD and DVD player audio paths, digital broadcast receivers, professional audio mixers, sampling-rate converters, home-theater receivers, and high-end portable audio equipment. Its 192 kHz capability also supports high-resolution source material, although system clocking and output reconstruction must be designed to preserve the converter's full performance.
For PCB design, keep the analog output routing short, place decoupling capacitors near the supply pins, and follow the manufacturer pin-description table when assigning connector and control-signal routing. Differential outputs should be routed with matched geometry where practical, and the exposed digital signals should remain separated from sensitive analog output paths to minimize crosstalk.
Alternativas drop-in para PCM1789PWR — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
PCM1788
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
PCM1787
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
PCM1786
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
PCM1784
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
PCM1782
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
PCM1789PWR Classificações máximas e características elétricas
| Converter Type | Stereo audio digital-to-analog converter |
| Resolução | 24 bit |
| Maximum Sampling Rate | 192 kHz |
| Minimum Sampling Rate | 8 kHz |
| Supported Input Word Lengths | 16 bit, 20 bit, 24 bit, 32 bit |
| Configuração de saída | 2 channels, differential outputs |
| Signal-to-Noise Ratio | 113 dB |
| DAC Architecture | Enhanced multi-level delta-sigma modulator |
| Audio Interface | I2S |
| Control Interface | Three-wire SPI-compatible or two-wire I2C-compatible serial control |
| Hardware Control | Two user-programmable control pins |
| Digital Attenuation | Programmable |
| Soft Mute | Programmable |
| De-emphasis | Programmable |
| Corrente de alimentação | 22.0 mA |
| Encapsulamento | 24-pin TSSOP (PW) |
| Tipo de montagem | Surface mount |
| Status RoHS | Compliant |
| Moisture Sensitivity Level | MSL 2, 260 C, 1 year |
Guia de Configuração de Pinos do PCM1789PWR 24-pin tssop (pw)
Configuração de pinos para PCM1789PWR (pacote 24-pin tssop (pw)). Este componente analógico possui pinos de entrada, saída e alimentação. Consulte o datasheet do fabricante para configurações de offset null, compensação e pino de enable. Ideal para circuitos de condicionamento de sinal e amplificadores.
Nenhum dado detalhado de pinagem disponível para PCM1789PWR.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
PCM1789PWR é adequado para 6 aplicaçãos: High-Resolution CD and DVD Player Audio Path, Professional Digital Mixer Audio Channel, Digital Broadcast and Network Audio Receiver, Home-Theater and AV Receiver DAC, Sampling-Rate Converter and Digital Audio Processor, High-End Portable and Personal Audio.
High-Resolution CD and DVD Player Audio Path
The PCM1789PWR fits a high-resolution player output stage because it converts 24-bit PCM audio at rates up to 192 kHz while providing two differential analog channels. Its 113 dB SNR rating leaves useful dynamic-range margin for the DAC, reconstruction filter, and following output amplifier. Place the converter close to the output filter and analog power regulator, then route the differential outputs without crossing digital clock or serial-data traces. The programmable attenuation and soft-mute functions also allow a system controller to implement channel trimming and quiet transitions without external relay circuits.
Recomendado
Professional Digital Mixer Audio Channel
A digital mixer can use the PCM1789PWR to convert two mixer buses into analog line outputs for external monitoring, processing, or recording. Its differential outputs suit balanced analog routing and help reduce ground-current sensitivity, while the 24-bit conversion and 192 kHz sampling capability cover high-resolution multichannel workflows. Use hardware-control mode for fast mute or level functions when the mixer has limited control bandwidth, or use the serial control interface for software-managed attenuation. Keep clock traces away from the analog outputs and use a dedicated low-noise analog supply section.
Recomendado
Digital Broadcast and Network Audio Receiver
The PCM1789PWR is appropriate for broadcast receivers and network-audio products that need a stereo analog line output after a digital decoding stage. Its I2S input accepts 16-, 20-, 24-, or 32-bit words, and the 8 kHz-to-192 kHz range covers standard broadcast rates as well as high-resolution streams. Differential outputs reduce sensitivity to common-impedance ground noise in chassis-based equipment. Software control provides programmable attenuation, soft mute, and de-emphasis, while the two hardware-control pins can implement direct mute or user-defined functions.
Recomendado
Home-Theater and AV Receiver DAC
The PCM1789PWR can provide the final stereo conversion stage in a home-theater receiver, game-console audio accessory, or television soundbar. Its 113 dB SNR supports low-noise playback from digital sources, and the 192 kHz maximum rate accommodates high-resolution content when the upstream source and clock architecture support it. Differential outputs pair well with balanced preamplifier inputs, while unbalancing can be performed downstream if required. Programmable soft mute and attenuation help prevent transients during source changes and volume transitions.
Recomendado
Sampling-Rate Converter and Digital Audio Processor
In a sampling-rate conversion or digital audio processing chassis, the PCM1789PWR serves as the stereo analog output converter after digital routing and gain processing. Differential analog outputs help maintain signal integrity over longer internal cable runs when paired with a balanced receiver. The converter's programmable attenuation and hardware-control pins provide both fine-grained software adjustment and fast system-level control. Clocking remains the dominant integration issue, so the system must supply the required master and slave clocks and ensure that the audio interface format matches the upstream processor.
Recomendado
High-End Portable and Personal Audio
The PCM1789PWR is suitable for high-end portable and personal-audio products when differential outputs, programmable attenuation, and a compact surface-mount implementation are important. The 24-pin TSSOP package allows a compact layout, while differential outputs can feed a balanced headphone stage or a precision line driver. Low-noise analog supply design is essential because converter performance can be limited by regulator and decoupling noise. Keep the digital interface isolated from the analog output path and use the soft-mute function for click-free mode or connection transitions.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para PCM1789PWR — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto |
|---|---|
| Package | 24-pin TSSOP (PW) |
| Brand | Texas Instruments |
| Converter Type | Stereo audio DAC with differential outputs |
| Resolution | 24 bit |
| Maximum Sampling Rate | 192 kHz |
| Minimum Sampling Rate | 8 kHz |
| Supported Input Word Lengths | 16 bit, 20 bit, 24 bit, 32 bit |
| Signal-to-Noise Ratio | 113 dB |
| Audio Interface | I2S |
| Control Interface | SPI-compatible or I2C-compatible serial control |
| Supply Current | 22.0 mA |
| RoHS Status | Compliant |
Principais diferenciais
- Supports high-resolution stereo conversion with differential outputs (vs PCM1794)
- Combines serial control with programmable hardware-control pins (vs PCM1795)
- Accepts four digital input-word lengths (vs PCM1798)
Notas de projeto
Separate the analog output region from digital clock, serial-data, and control traces. Route the two differential outputs as short matched pairs where practical, place reconstruction or output filtering close to the converter, and avoid sharing narrow ground paths between output return currents and switching circuitry. This layout strategy limits crosstalk and helps preserve the PCM1789's 113 dB SNR capability.
Use separate, low-impedance supply and ground connections for the analog and digital sections, and place local decoupling capacitors at the supply pins according to the manufacturer layout. The reported supply current is 22.0 mA, but actual converter dissipation depends on the operating voltage and output state. Validate the analog rail for noise and start-up sequencing before evaluating output SNR.
Do not assign PCB nets from a similar stereo DAC without checking the manufacturer pin-description table. The audio-data pins, control pins, analog outputs, and supply pins must match the PCM1789PWR exactly. Also verify master-clock and slave-clock requirements, the supported I2S format, and the output filtering values before power-up, since incorrect clocking can invalidate otherwise correct analog measurements.
Informações de conformidade
RoHS compliance and an MSL 2, 260 C, 1-year moisture sensitivity classification are reported for PCM1789PWR. Other compliance attributes were not stated in the product information.
