PCM3008T - 16-Bit Stereo Audio Codec | Texas Instruments
N.º de pieza: PCM3008T ✓ ActivoPCM3008T Descripción general
An audio codec is an interface IC that converts signals between the analog and digital domains. The PCM3008T integrates two analog-to-digital converters and two digital-to-analog converters, placing a complete stereo capture and playback path into one device. Its digital architecture connects these converters to an audio data interface while providing filtering and signal-conditioning functions required for practical audio systems.
The ADC path uses 64-times oversampling followed by a digital decimation filter and digital high-pass filter. These functions reduce out-of-band components and remove low-frequency DC content from captured audio. The DAC path includes an 8-times oversampling digital interpolation filter, a digital de-emphasis filter, and pop-noise-free muting. The 16-bit resolution supports CD-audio-compatible data widths, while the single-ended interface reduces the external component count of analog input and output circuitry.
The converter architecture trades a conventional high-rate multi-bit conversion approach for delta-sigma modulation. The manufacturer datasheet describes the DAC signal path as an 8-times oversampling interpolation stage followed by conversion to 64-times oversampling and one-bit delta-sigma modulation. This integrated filtering architecture provides a compact stereo codec without requiring separate converter and reconstruction circuitry.
Typical uses include consumer stereo audio playback, digital recording equipment, communications terminals, industrial audio interfaces, and embedded audio systems. The single-ended analog topology is particularly useful when the signal source and destination use single-ended ground-referenced connections. A separate clock and digital interface remain necessary because the codec is not a self-contained USB or network audio controller.
Design the analog and digital sections with attention to grounding and return paths. Place input and output filtering components close to their associated pins, keep switching supplies and high-current digital traces away from the analog inputs, and follow the manufacturer pin-description and application guidance for bypass capacitors, clocking, and audio interface configuration.
This page combines the PCM3008T converter architecture, interface details, verified ordering information, and practical design guidance with a direct comparison against its documented orderable equivalent. It is intended to help engineers confirm package compatibility, select an appropriate audio architecture, and plan analog, digital, and power-layout decisions before schematic release.
Alternativas directas para PCM3008T — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
PCM3008T/2K
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
PCM3008T Especificaciones
| Product Type | Stereo audio codec |
| ADC Resolution | 16 bit |
| DAC Resolution | 16 bit |
| Analog Input Configuration | Stereo single-ended |
| Analog Output Configuration | Stereo single-ended |
| Digital Audio Interface | 16-bit serial |
| ADC Oversampling Ratio | 64 times |
| DAC Oversampling Ratio | 64 times |
| DAC Interpolation Oversampling | 8 times |
| ADC Decimation Filter | Digital |
| ADC High-Pass Filter | Digital |
| DAC De-Emphasis Filter | Digital |
| Muting Function | Pop-noise-free |
| Line-Out Control | Hardware control |
| Encapsulado | 16-TSSOP |
Guía de configuración de pines de PCM3008T 16-tssop
Configuración de pines para PCM3008T (encapsulado 16-tssop). La numeración de pines, las funciones y los diagramas de conexión se definen en la hoja de datos del fabricante. Consúltela para conocer el footprint exacto y las directrices de soldadura.
No hay datos detallados de patillaje disponibles para PCM3008T.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
PCM3008T es adecuado para 6 aplicacións: Stereo Digital Audio Capture, Stereo Audio Playback, Communications Terminal Audio, Consumer Audio Appliance, Industrial Audio Control Panel, Portable Recording Device.
Stereo Digital Audio Capture
PCM3008T fits a stereo capture chain where two ground-referenced analog inputs must become 16-bit serial audio data. Each ADC uses delta-sigma modulation with 64-times oversampling, followed by a digital decimation filter and digital high-pass filter for signal conditioning before the data enters the digital audio path. The single-ended inputs can simplify source interfacing compared with a fully differential codec arrangement, while the 16-bit width supports conventional digital-audio processing. Place the analog input circuitry and return paths close to the device, keep them away from switching-current traces, and follow the manufacturer application circuit for filtering and bypass-component placement. The result is a compact stereo capture front end for equipment where two ADC channels and a 16-bit serial interface are required.
Recomendado
Stereo Audio Playback
PCM3008T is suitable for stereo playback systems requiring two single-ended analog outputs and a 16-bit digital audio stream. The DAC section uses 64-times oversampled delta-sigma conversion, an 8-times oversampling interpolation filter, digital de-emphasis, and pop-noise-free muting. These functions support a compact playback path without separate reconstruction and mute circuitry. Hardware line-out control gives the system an additional direct mechanism for managing output state, which is useful in equipment with local mode or power sequencing requirements. Keep output-filter components near the analog pins, maintain a quiet ground reference, and observe the manufacturer's mute and power-up guidance to minimize audible transients when playback starts or stops.
Recomendado
Communications Terminal Audio
PCM3008T can support voice and audio terminals that need local analog capture and playback around a digital communications processor. The two 16-bit ADCs and two 16-bit DACs provide a complete stereo path, while the serial interface allows the surrounding controller to handle framing, storage, or network transport. Single-ended analog I/O can reduce board area when the connected microphone, speaker amplifier, and codec analog sections use compatible ground-referenced signaling. The ADC high-pass filter helps remove low-frequency content from captured signals, and the DAC path includes pop-noise-free muting for controlled output transitions. Designers should verify clocking, serial format, analog levels, and latency against the host processor while isolating codec return paths from noisy switching circuitry.
Recomendado
Consumer Audio Appliance
PCM3008T fits compact consumer audio products that require integrated recording and playback without a separate converter pair. Its 16-TSSOP package contains the stereo ADC, DAC, digital filters, serial interface, and hardware line-out control, reducing the number of discrete conversion components on the board. The low-power, low-voltage positioning makes it appropriate for space-conscious equipment whose signal chain operates from a constrained supply. Use a clean analog ground reference, route digital clock and data away from input and output traces, and apply the manufacturer's recommended bypass and filtering network. Validate startup sound, mute behavior, and full-scale signal margins in the final enclosure because grounding and power-supply layout can materially affect perceived audio performance.
Recomendado
Industrial Audio Control Panel
PCM3008T is applicable to industrial audio panels that monitor a stereo analog source and provide a digital playback path. The integrated ADC high-pass filter and decimation stage condition captured signals, while the DAC interpolation, de-emphasis, and pop-free muting functions support controlled output. Its single-ended analog topology can simplify interfaces to line-level source equipment, provided the board maintains a low-noise analog return. The hardware line-out function can assist with system-level output management, but its electrical behavior and active state must be checked in the timing documentation. Use isolated return-current planning, short analog traces, and separate digital and analog ground strategies where the enclosure includes relays, motor controls, or switching power stages.
Recomendado
Portable Recording Device
PCM3008T can serve as the audio conversion block in a portable recorder that captures two analog channels and also supports stereo monitoring or playback. Its 16-bit ADC and DAC resolution provides a conventional digital-audio data width, while delta-sigma modulation and 64-times oversampling are handled internally. The 16-TSSOP package offers a compact footprint, and hardware line-out control can support a system mute or mode-change function. Because portable equipment often combines switching regulators, wireless circuitry, and noisy mechanical switches, analog layout deserves particular attention. Keep input return paths short, maintain continuous analog ground references, and verify the codec supply arrangement and bypass components against the manufacturer guidance before finalizing the board stack-up.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para PCM3008T — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | PCM3008T/2K |
|---|---|---|
| Brand | Texas Instruments | Texas Instruments |
| Package | 16-TSSOP | 16-TSSOP - same |
| Codec Configuration | 16-bit stereo audio codec | 16-bit stereo audio codec |
| ADC Resolution | 16 bit | 16 bit |
| DAC Resolution | 16 bit | 16 bit |
| Analog Input Configuration | Stereo single-ended | Stereo single-ended |
| Analog Output Configuration | Stereo single-ended | Stereo single-ended |
| Digital Audio Interface | 16-bit serial | 16-bit serial |
| Converter Oversampling | 64 times for ADCs and DACs | 64 times for ADCs and DACs |
| DAC Interpolation | 8-times oversampling | 8-times oversampling |
| Line-Out Control | Hardware control | Hardware control |
| Muting | Pop-noise-free | Pop-noise-free |
Diferenciadores clave
- Complete stereo conversion in one compact package (frente a PCM3008T/2K)
- Integrated delta-sigma signal processing (frente a PCM3008T/2K)
- Single-ended analog I/O with digital filtering (frente a PCM3008T/2K)
Notas de diseño
Keep the PCM3008T analog input and output networks close to their associated pins, and route analog signals over a continuous ground reference. Digital clock, serial data, and control traces should not pass directly beneath sensitive analog nodes. Use the manufacturer application circuit to select the bypass and filtering components, because no verified capacitor values or external-component list are available from the product-page summary.
Treat the 16-bit serial interface and its clock as a matched digital subsystem. Route clock and data together when practical, use a continuous reference plane, and avoid long stubs or unnecessary test-point branches. The PCM3008 datasheet's timing and interface sections must govern signal levels, setup requirements, operating modes, and synchronization rather than generic serial-interface assumptions.
Do not assume that the hardware line-out control has the same polarity or timing as an ordinary mute input. Confirm its active state and relationship to the DAC mute behavior in the manufacturer pin-description and timing information. Also avoid treating the PCM3008T as a USB audio interface: its verified function is a 16-bit serial stereo codec, so an external controller must provide the required audio transport and clocking.
Información de cumplimiento
The manufacturer product page and datasheet were identified, but no specific RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declaration was included in the verified product data.
