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Texas Instruments PCM3002EG/2K
- Part No.:
- PCM3002EG/2K
- Manufacturer:
- Texas Instruments
- Category:
- CODECS
- Package:
- 24-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
PCM3002EG/2K.pdf
- Description:
- IC STEREO CODEC 16/20BIT 24-SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,038
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Product details
Overview
PCM3002EG/2K from Texas Instruments is a 20-bit stereo audio codec IC integrating monolithic delta-sigma ADC and DAC with single-ended analog input/output, 64× oversampling, software-controlled digital attenuation (256 steps), soft mute, and four programmable audio data formats including I²S. It operates from a single 3-V supply in SSOP-24 and targets portable DVC and mobile audio subsystems.
For engineers reviewing the PCM3002EG/2K datasheet, PCM3002EG/2K pinout, PCM3002EG/2K application, or PCM3002EG/2K equivalent, key selection criteria include its 90-dB SNR ADC, 94-dB SNR DAC, independent ADC/DAC power-down, zero-flag output (ZFLG), and support for 4–48 kHz sampling rates with 256/384/512× system clock multiplication.
Technical Context
The PCM3002EG/2K implements a dual-path delta-sigma architecture: the ADC uses 64× oversampling with digital decimation and high-pass filtering for offset cancellation, while the DAC employs 8× oversampling with interpolation, de-emphasis (32/44.1/48 kHz), infinite zero detection, and analog low-pass filtering. Both paths share a common 24-pin SSOP package and operate synchronously to SYSCLK, LRCIN, and BCKIN.
Control is exclusively software-driven via three-wire mode interface (ML, MD, MC) - distinct from the hardware-configured PCM3003 - enabling dynamic register reconfiguration of data format, attenuation, mute, and loopback without hardware changes. The ZFLG open-drain output signals zero-crossing detection on DOUT for precise timing-critical audio processing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 20-bit ADC and DAC - enables high-fidelity audio capture and playback with >90 dB dynamic range |
| SNR (ADC) | 90 dB A-weighted - meets CD-quality audio requirements for portable recording |
| SNR (DAC) | 94 dB EIAJ A-weighted - supports line-out fidelity in battery-powered DVC systems |
| Sampling Rate | 4–48 kHz - covers voice, telephony, and full-range consumer audio applications |
| System Clock | 256/384/512 × fS - allows flexible clock tree design using standard crystal oscillators (e.g., 12.288 MHz for 48 kHz) |
| Supply Voltage | 2.7–3.6 V - compatible with single-cell Li-ion and regulated 3.3-V rails |
| Power Dissipation | 72 mW typical at 3 V - enables thermal management in compact handheld enclosures |
Pinout & Package
PCM3002EG/2K is housed in a 24-pin SSOP (Shrink Small Outline Package) with 0.64-mm lead pitch, optimized for space-constrained portable audio PCB layouts. Thermal resistance θJA = 100°C/W supports operation up to +85°C ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST (7) | Active-low reset input | Initiates 1024-cycle internal initialization sequence; required for deterministic startup in embedded audio firmware |
| ML (8), MD (17), MC (18) | Three-wire serial mode control interface | Software-programmable configuration of data format, attenuation, mute, and loopback without external EEPROM |
| ZFLG (16) | Open-drain zero flag output | Signals zero-crossing on DOUT for glitch-free volume transitions and sample-accurate DSP synchronization |
| VINL (6), VINR (3) | Differential-capable single-ended ADC inputs | Accept 1.8 Vp-p full-scale analog signals referenced to VCOM (0.5 × VCC); no external op-amp needed |
| VOUTL (19), VOUTR (20) | Single-ended DAC outputs | Drive 10-kΩ loads directly; integrated analog LPF ensures <0.16 dB ripple up to 20 kHz |
| SYSCLK (9), LRCIN (10), BCKIN (11), DIN (15), DOUT (12) | Digital audio interface | Supports left/right-justified and I²S formats; timing compliant with TI's SBAS079A spec (tDIS/tDIH ≥ 40 ns) |
Key Features
| Feature | Design Value |
|---|---|
| Digital attenuation (256 steps) | 0.5-dB resolution volume control implemented entirely in digital domain - eliminates analog potentiometer drift and noise |
| Soft mute | Gradual amplitude ramp-down prevents audible pop/click during playback interruption - critical for user-facing portable devices |
| Digital loopback mode | Internal routing of ADC data to DAC path - enables real-time audio diagnostics and latency measurement without external cabling |
| Four audio data formats | Runtime-selectable I²S, left-justified, right-justified (16/20-bit) - simplifies integration with diverse SoC audio controllers (e.g., ARM-based media processors) |
| Independent ADC/DAC power-down | Reduces current to 50 µA in deep-sleep mode - extends battery life in voice-recording standby states |
Applications
| Digital Video Camera (DVC) | Digital Still Camera (DSC) |
|---|---|
Use Scenario: Simultaneous stereo audio capture during HD video recording with real-time AGC and noise suppression. IC Role / Device Role / Timing Role: Primary stereo audio front-end codec handling analog-to-digital conversion, sample-rate alignment, and digital output formatting for baseband processor ingestion. Use Value: 90-dB SNR and 64× oversampling ensure clean dialogue capture under variable lighting/noise conditions; software-controlled attenuation adapts gain per scene without mechanical mic adjustment. | Use Scenario: High-fidelity audio playback of voice memos or short video clips stored on SD card. IC Role / Device Role / Timing Role: Stereo DAC subsystem generating line-level analog output synchronized to display refresh and storage read timing. Use Value: 94-dB SNR and integrated analog LPF deliver distortion-free playback through built-in speakers or headphone jack; soft mute prevents click during menu navigation. |
| Portable Media Player | VoIP Handset |
Use Scenario: Playback of compressed stereo audio files (MP3, AAC) with adjustable volume and equalization. IC Role / Device Role / Timing Role: Audio decode endpoint converting I²S stream from host SoC into analog line-out/headphone drive signal. Use Value: Four-format flexibility allows direct interface to multiple SoC vendors' audio peripherals; 20-bit resolution preserves detail in lossy file playback. | Use Scenario: Full-duplex voice communication over IP networks with echo cancellation and sidetone mixing. IC Role / Device Role / Timing Role: Dual-role codec performing simultaneous ADC (mic input) and DAC (speaker/headset output) with tight inter-channel synchronization. Use Value: Independent ADC/DAC power-down enables low-power listening mode; zero-flag output enables precise sidetone injection timing to avoid feedback. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar stereo audio codec applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PCM3003E/2K | Hardware-controlled (DEM0/DEM1, 20BIT pins); no software interface or ZFLG; fixed data formats (0–1 only) | Targeted at cost-sensitive DSC designs requiring fixed de-emphasis and simpler layout; lacks runtime configurability | Select when firmware complexity must be minimized and audio parameters remain static across production units |
| TLV320AIC23BPW | 24-bit resolution; I²C/SPI control; lower THD+N (–90 dB); higher supply current (22 mA active) | Better suited for professional-grade portable recorders needing extended dynamic range and multi-device I²C bus control | Select when 24-bit precision, lower noise floor, or multi-codec I²C daisy-chaining is required |
Compared with PCM3002EG/2K, PCM3003E/2K trades software flexibility for reduced BOM count and layout simplicity, while TLV320AIC23BPW offers higher resolution and digital interface versatility at the cost of increased power and board area - making PCM3002EG/2K optimal for mid-tier DVCs balancing performance, configurability, and size.
Availability
PCM3002EG/2K is available at Aetrix Electronics and suitable for digital video cameras, portable media players, and VoIP handsets requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for PCM3002EG/2K includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies, with decades of expertise in high-performance audio signal chains.
The PCM3002EG/2K belongs to TI's PCM300x stereo audio codec family, designed specifically for cost-sensitive, battery-powered consumer electronics requiring integrated ADC/DAC functionality, low power, and software-defined audio configuration.
FAQ
What is the maximum sampling rate supported by the PCM3002EG/2K?
The PCM3002EG/2K supports sampling rates from 4 kHz up to 48 kHz, with corresponding system clock frequencies of 256×, 384×, or 512× fS. At 48 kHz, the required SYSCLK is 24.576 MHz (512×), enabling full-bandwidth CD-quality audio capture and playback. Performance metrics such as SNR and THD+N are specified across this entire range in the SBAS079A datasheet.
Does the PCM3002EG/2K require external anti-aliasing or reconstruction filters?
No, the PCM3002EG/2K integrates both functions internally: the ADC includes a switched-capacitor antialiasing filter with –3 dB point at 150 kHz, and the DAC incorporates an analog low-pass filter with –0.16 dB ripple up to 20 kHz. These eliminate the need for external passive RC or active filter components, reducing BOM count and PCB area in portable designs.
How does the ZFLG pin on the PCM3002EG/2K function in audio systems?
The ZFLG pin on the PCM3002EG/2K is an open-drain output that asserts low when the DOUT data stream crosses zero amplitude, providing hardware-synchronized zero-crossing detection. This enables glitch-free volume transitions, precise sidetone injection timing in VoIP handsets, and accurate trigger points for DSP-based audio analysis - all without CPU polling or software interpolation.
Can the PCM3002EG/2K operate from a 2.5-V supply?
No - the PCM3002EG/2K has a minimum recommended supply voltage of 2.7 V per the SBAS079A datasheet. Operation below 2.7 V risks violation of absolute maximum ratings and may cause undefined behavior in the delta-sigma modulators or digital logic. For 2.5-V systems, consider TI's TLV320AIC310x series or verify compatibility through TI's official characterization reports.
What audio data formats does the PCM3002EG/2K support, and how are they selected?
The PCM3002EG/2K supports four formats: right-justified (16/20-bit), left-justified (16/20-bit), and I²S (20-bit), all selectable via software writes to register 3 using the ML/MD/MC interface. Unlike the hardware-configured PCM3003, this enables runtime reconfiguration - for example, switching from I²S for playback to left-justified for recording without changing PCB traces or strapping resistors.
PCM3002EG/2K Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 24-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Stereo Audio
- Data Interface:
- Serial
- Resolution (Bits):
- 20 b
- Number of ADCs / DACs:
- 2 / 2
- Sigma Delta:
- Yes
- S/N Ratio, ADCs / DACs (db) Typ:
- 90 / 94
- Dynamic Range, ADCs / DACs (db) Typ:
- 90 / 94
- Voltage - Supply, Analog:
- 2.7V ~ 3.6V
- Voltage - Supply, Digital:
- 2.7V ~ 3.6V
- Operating Temperature:
- -25°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-SSOP
PCM3002EG/2K FAQ
1.How can I place an order for PCM3002EG/2K through Aetrix?
Please submit a Request for Quotation (RFQ) for PCM3002EG/2K on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for PCM3002EG/2K reliable?
The price and inventory of PCM3002EG/2K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCM3002EG/2K is usually 5 days.
3.What payment methods are accepted for PCM3002EG/2K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCM3002EG/2K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCM3002EG/2K?
PCM3002EG/2K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCM3002EG/2K order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for PCM3002EG/2K?
For technical support, including PCM3002EG/2K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCM3002EG/2K requirements.
6.How does Aetrix verify that PCM3002EG/2K is sourced from the original manufacturer or authorized distributors?
All PCM3002EG/2K products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that PCM3002EG/2K meets industry standards.
7.What is the process for return or replacement of PCM3002EG/2K?
All PCM3002EG/2K units undergo pre-shipment inspection (PSI). If there is an issue with PCM3002EG/2K, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The PCM3002EG/2K part is unused and in its original packaging.
Return procedure for PCM3002EG/2K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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