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Texas Instruments PCM3002E/2K
- Part No.:
- PCM3002E/2K
- Manufacturer:
- Texas Instruments
- Category:
- CODECS
- Package:
- 24-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
PCM3002E/2K.pdf
- Description:
- IC STEREO AUDIO CODEC 24-SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,293
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Product details
Overview
PCM3002E/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 mode, and digital attenuation (256 steps) in a 24-pin SSOP package. It operates from a single 3-V supply and supports I²S, left-justified, and right-justified audio data formats for portable audio systems.
For engineers reviewing the PCM3002E/2K datasheet, PCM3002E/2K pinout, PCM3002E/2K application, or PCM3002E/2K equivalent, key selection criteria include THD+N (–86 dB), SNR (90 dB ADC / 94 dB DAC), independent ADC/DAC power-down, digital de-emphasis at 32/44.1/48 kHz, and support for sampling rates from 4 kHz to 48 kHz.
Technical Context
The PCM3002E/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, analog low-pass filtering, soft mute, and infinite zero detection. All digital processing-including format selection (four modes), attenuation, and de-emphasis-is controlled via serial software interface using MC/MD/ML pins.
It features Schmitt-trigger digital inputs (RST, ML, MD, MC, SYSCLK, LRCIN, BCKIN, DIN) with internal 100-kΩ pulldown resistors, open-drain ZFLG output, and separate analog/digital ground and supply domains (VCC1/VCC2/AGND1/AGND2/VDD/DGND) to minimize noise coupling between ADC and DAC sections.
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 |
| THD+N | –86 dB (ADC & DAC at –0.5 dBFS) - meets consumer audio distortion requirements without external compensation |
| SNR | 90 dB (ADC), 94 dB (DAC), A-weighted - ensures clean signal path for portable media players and voice recorders |
| Sampling Rate | 4 kHz to 48 kHz - supports narrowband telephony up to CD-quality audio |
| System Clock | 256 fS / 384 fS / 512 fS - flexible clocking allows use with standard crystal oscillators (e.g., 12.288 MHz for 48 kHz) |
| Supply Voltage | 2.7 V to 3.6 V - compatible with single-cell Li-ion and 3.3-V logic rails |
| Power Consumption | 24 mA typical (VDD = VCC = 3 V) - optimized for battery-powered operation with 50 µA power-down current |
Pinout & Package
PCM3002E/2K is housed in a 24-pin SSOP (DB) package with 0.65-mm lead pitch and exposed thermal pad. Pin assignments are validated per TI SBAS079A Rev. October 2004, including dedicated analog/digital grounds and isolated supply pins for ADC (VCC1, AGND1), DAC (VCC2, AGND2), and digital core (VDD, DGND).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST (7) | Active-low reset input | Asynchronous hardware reset requiring ≥40 ns pulse; initiates 1024-cycle initialization sequence |
| ML (8), MD (17), MC (18) | Serial mode control interface | Three-wire software-configurable bus for register access; all Schmitt-trigger with 100-kΩ pulldown |
| ZFLG (16) | Open-drain zero-detect flag | Asserts low when DAC/ADC output reaches bipolar zero (0.5 × VCC); requires external pull-up |
| VINL (6), VINR (3) | Differential-capable single-ended ADC inputs | Accept 1.8 VP-P full-scale at VCC = 3 V; include on-chip antialiasing filter (–3 dB at 150 kHz) |
| VOUTL (19), VOUTR (20) | Single-ended DAC outputs | Drive 10-kΩ load with integrated analog LPF (–0.16 dB at 20 kHz); center-biased at 0.5 × VCC |
| SYSCLK (9), LRCIN (10), BCKIN (11), DIN (15), DOUT (12) | Digital audio interface | Four-wire PCM interface supporting I²S, left/right-justified, and custom formats; all Schmitt-trigger inputs |
Key Features
| Feature | Design Value |
|---|---|
| Digital attenuation | 256-step programmable gain control (–100 dB to 0 dB) for precise volume management without analog potentiometers |
| Software-selectable formats | Four audio data formats (I²S, left-justified, right-justified, custom) configured via serial control-enables interoperability with diverse host processors |
| Digital de-emphasis | Hardware-accelerated 32/44.1/48 kHz de-emphasis filtering eliminates need for external DSP or post-processing |
| Independent power-down | Separate ADC and DAC shutdown control reduces system power by >99% in standby without affecting companion channel |
| Zero-flag detection | ZFLG output signals DAC/ADC output convergence to mid-supply (0.5 × VCC), enabling glitch-free mute/unmute transitions |
Applications
| Portable Digital Audio Recorders | DSC Audio Subsystem |
|---|---|
Use Scenario: Battery-powered voice recorder capturing interviews with low-noise preamp and long-duration storage. IC Role / Device Role / Timing Role: PCM3002E/2K serves as the sole analog front-end and playback engine, handling microphone input digitization and speaker/headphone output reconstruction. Use Value: 90 dB SNR and –86 dB THD+N ensure broadcast-grade recording fidelity; 24 mA active current extends runtime on coin-cell or single Li-ion. | Use Scenario: Entry-level digital still camera requiring stereo audio capture synchronized to image capture. IC Role / Device Role / Timing Role: PCM3002E/2K interfaces directly to baseband processor via I²S, providing sample-accurate audio timestamping aligned to frame exposure timing. Use Value: Independent ADC/DAC power-down allows audio capture during image processing without DAC interference; 4–48 kHz sampling covers voice memo to high-res audio clip. |
| USB Audio Adapters | Smart Speaker Voice Input Module |
Use Scenario: Compact USB dongle converting PC audio streams to analog line-out and mic-in for legacy AV equipment. IC Role / Device Role / Timing Role: PCM3002E/2K acts as bidirectional audio transcoder, accepting USB-isochronous packets via microcontroller and driving analog jacks. Use Value: Four-format flexibility accommodates varying USB audio class descriptors; single 3-V supply simplifies power design versus dual-rail alternatives. | Use Scenario: Far-field voice assistant node with MEMS microphone array feeding into wake-word detection ASIC. IC Role / Device Role / Timing Role: PCM3002E/2K conditions and digitizes analog mic signals before sending 20-bit I²S stream to ASR processor. Use Value: On-chip high-pass filter removes DC offset from MEMS bias; 20-bit resolution preserves low-SNR speech detail critical for neural net inference. |
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/PDAD/PDDA pins); no software interface or ZFLG; fixed 20BIT format select | Targeted at cost-sensitive DSCs where firmware simplicity outweighs configurability needs | Select PCM3003E/2K only if register programming is unnecessary and de-emphasis/power-down must be pin-strapped |
| TLV320AIC23BPW | Higher integration: built-in headphone amp, PLL, and MIC bias; 96 dB SNR; SPI/I²C interface; 28-pin TSSOP | Better suited for designs requiring direct headphone drive or clock synthesis without external oscillator | Choose TLV320AIC23BPW when system-level integration (e.g., Class AB amp, PLL) justifies larger footprint and higher BOM cost |
Compared with PCM3003E/2K, PCM3002E/2K offers software configurability and zero-flag signaling at the cost of additional control lines; versus TLV320AIC23BPW, it trades headphone drive and PLL for lower power and smaller SSOP-24 footprint-ideal for space-constrained, firmware-flexible audio subsystems.
Availability
PCM3002E/2K is available at Aetrix Electronics and suitable for portable audio recorders, digital still cameras, USB audio adapters, and smart speaker voice input modules requiring stable component supply and long-term industrial availability.
Supply support for PCM3002E/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 over 50 years of innovation in precision signal chain solutions.
The PCM3002E/2K belongs to TI's legacy audio codec product line, engineered specifically for cost-sensitive, low-power stereo audio acquisition and playback in portable consumer electronics where software-defined configuration adds design flexibility.
FAQ
What audio data formats does the PCM3002E/2K support?
The PCM3002E/2K supports four software-selectable audio data formats: I²S, left-justified, right-justified, and a custom format-configured via its three-wire serial mode control interface (ML/MD/MC pins). This flexibility enables seamless integration with diverse host processors without hardware redesign.
Does the PCM3002E/2K require external anti-aliasing or reconstruction filters?
No. The PCM3002E/2K integrates a switched-capacitor antialiasing filter (–3 dB at 150 kHz) for the ADC and an analog low-pass filter for the DAC (–0.16 dB at 20 kHz). These on-chip filters meet standard audio band requirements, eliminating the need for external passive components in most portable applications.
How does the zero-flag (ZFLG) output function in the PCM3002E/2K?
ZFLG is an open-drain output that asserts low when the PCM3002E/2K's DAC or ADC output reaches bipolar zero (0.5 × VCC). It enables glitch-free mute/unmute transitions and real-time monitoring of signal quiescence-critical for voice activity detection and power-state synchronization in battery-powered devices.
What is the minimum system clock frequency supported by the PCM3002E/2K?
The PCM3002E/2K supports system clock frequencies of 256 fS, 384 fS, or 512 fS. At the lowest sampling rate of 4 kHz, the minimum system clock is 256 × 4 kHz = 1.024 MHz. The device automatically detects and divides higher clocks (384 fS/512 fS) down to 256 fS for internal digital filter operation.
Can the PCM3002E/2K operate from a 2.5-V supply?
Yes. The PCM3002E/2K operates across 2.7 V to 3.6 V per absolute maximum ratings, but TI specifies 2.4 V to 2.7 V operation only for 0°C to 70°C ambient and 256 fS/512 fS clocking (384 fS not available). At 2.5 V, performance remains within spec: THD+N and SNR degrade <0.5 dB, and supply current scales linearly.
PCM3002E/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:
- Active
- 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
PCM3002E/2K FAQ
1.How can I place an order for PCM3002E/2K through Aetrix?
Please submit a Request for Quotation (RFQ) for PCM3002E/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 PCM3002E/2K reliable?
The price and inventory of PCM3002E/2K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCM3002E/2K is usually 5 days.
3.What payment methods are accepted for PCM3002E/2K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCM3002E/2K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCM3002E/2K?
PCM3002E/2K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCM3002E/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 PCM3002E/2K?
For technical support, including PCM3002E/2K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCM3002E/2K requirements.
6.How does Aetrix verify that PCM3002E/2K is sourced from the original manufacturer or authorized distributors?
All PCM3002E/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 PCM3002E/2K meets industry standards.
7.What is the process for return or replacement of PCM3002E/2K?
All PCM3002E/2K units undergo pre-shipment inspection (PSI). If there is an issue with PCM3002E/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 PCM3002E/2K part is unused and in its original packaging.
Return procedure for PCM3002E/2K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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