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Texas Instruments PCM3008T/2K
- Part No.:
- PCM3008T/2K
- Manufacturer:
- Texas Instruments
- Category:
- CODECS
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
PCM3008T/2K.pdf
- Description:
- IC STEREO CODEC 16BIT 16-TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,055
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Product details
Overview
PCM3008T/2K from Texas Instruments is a low-power, single-ended 16-bit stereo audio codec IC with integrated delta-sigma ADC and DAC, THD+N of –84 dB (ADC) and –88 dB (DAC), SNR of 88 dB and 92 dB respectively, and operation from 2.1 V to 3.6 V. It serves as the analog front-end interface in portable digital audio systems requiring compact, cost-effective stereo conversion.
For engineers reviewing the PCM3008T/2K datasheet, PCM3008T/2K pinout, PCM3008T/2K application, or PCM3008T/2K equivalent, key selection criteria include its 16-pin TSSOP package, independent ADC/DAC power-down control, 8–48 kHz sampling rate support, and pop-noise-free muting for battery-powered consumer devices.
Technical Context
The PCM3008T/2K implements dual 5th-order delta-sigma modulation: 64× oversampling for ADC with decimation + digital high-pass filtering, and 8× oversampling for DAC with interpolation + de-emphasis filtering. Its digital audio interface supports left-justified ADC input and right-justified DAC output at 16-bit resolution.
System clock inputs (SYSCK) accept 256fS, 384fS, or 512fS frequencies; LRCK and BCK are synchronized to SYSCK, with automatic clock mode detection. Power-down control via PDAD and PDDA pins enables independent ADC/DAC shutdown with zero-code DOUT and VCOM-biased VOUT outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit ADC and DAC - ensures CD-quality dynamic range without external dithering |
| THD+N (ADC) | –84 dB at –0.5 dBFS - meets fidelity requirements for portable MD players and digital camcorders |
| THD+N (DAC) | –88 dB at 0 dBFS - delivers clean playback with minimal harmonic distortion in headphone outputs |
| Sampling Rate | 8–48 kHz - supports voice recording, telephony, and standard audio playback without resampling |
| Supply Voltage | 2.1 V to 3.6 V - compatible with single-cell Li-ion or dual-cell alkaline battery rails |
| Power Dissipation | 32 mW at VCC = 2.4 V - enables >10-hour runtime in portable systems with active audio I/O |
| Digital Interface | Left-justified ADC / right-justified DAC - simplifies connection to TI C5000/C6000 DSPs and ARM-based audio SoCs |
Pinout & Package
PCM3008T/2K is housed in a 16-pin TSSOP package (JEDEC MO-153, TI drawing ZZ363), with 0.65 mm pitch and exposed pad not electrically connected. Thermal resistance θJA is 150°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VINL / VINR | ADC analog input (L/R channel) | Single-ended voltage inputs referenced to VCOM; 30 kΩ input impedance enables direct coupling from line-level sources |
| VOUTL / VOUTR | DAC analog output (L/R channel) | Single-ended voltage outputs centered at VCOM; require external AC-coupling capacitors per TI layout guidelines |
| VCOM | Common-mode reference | 0.5 × VCC bias node for ADC/DAC; must be decoupled to GND with 0.1 µF + 1 µF capacitors |
| DIN / DOUT | Serial data I/O | PCM-format bidirectional data lines; support MSB-first, frame-synced transfers with LRCK/BCK timing |
| PDAD / PDDA | Power-down control | Active-low independent enable/disable for ADC and DAC; asserts pop-noise-free muting during transitions |
| DEM0 / DEM1 | De-emphasis selection | Two-pin binary control for 32/44.1/48 kHz de-emphasis or disable - matches legacy CD playback standards |
Key Features
| Feature | Design Value |
|---|---|
| Pop-noise free muting | Fade-in/fade-out implemented in digital domain and analog VOUT control circuit - eliminates audible transients during power cycling |
| Integrated anti-aliasing & LPF | On-chip analog filters eliminate need for external RC networks; 150 kHz ADC stopband, 250 kHz DAC –3 dB point |
| Digital high-pass filter (HPF) | DC-blocking HPF embedded in ADC decimation path - removes offset drift without external components |
| Independent power-down modes | ADC-only, DAC-only, or full shutdown with <50 µA quiescent current - extends battery life in asymmetric audio workflows |
| 3.3 V-tolerant digital I/O | All control pins (DEM0/DEM1/PDAD/PDDA/LRCK/BCK/SYSCK/DIN/DOUT) accept 3.3 V logic levels - simplifies interfacing with mixed-voltage SoCs |
Applications
| Digital Video Camera | Portable MiniDisc Player |
|---|---|
Use Scenario: Capturing stereo audio alongside video using low-power, space-constrained PCB layout. IC Role / Device Role / Timing Role: Stereo ADC digitizes microphone signals; DAC drives internal speaker or line-out; SYSCK synchronized to video master clock. Use Value: Integrated analog front-end and digital filters reduce BOM count by ≥4 passive components per channel versus discrete solutions. |
Use Scenario: Playback of compressed audio with legacy CD de-emphasis compensation in handheld form factor. IC Role / Device Role / Timing Role: DAC reconstructs 44.1 kHz PCM stream; DEM0/DEM1 pins configure de-emphasis; VCOM-referenced outputs drive headphone amplifier. Use Value: Hardware-selectable 44.1 kHz de-emphasis eliminates need for real-time DSP processing, saving MCU cycles and power. |
| USB Audio Adapter | Smart Voice Recorder |
Use Scenario: Adding stereo line-in/line-out capability to USB microcontrollers without dedicated audio peripherals. IC Role / Device Role / Timing Role: ADC captures analog line input; DAC feeds analog line output; BCK/LRCK generated from USB-isochronous packet timing. Use Value: Left/right-justified format compatibility enables direct connection to USB audio class firmware without bit-shifting overhead. |
Use Scenario: Battery-operated voice memo device requiring long-duration recording with minimal noise floor. IC Role / Device Role / Timing Role: ADC digitizes electret mic signal; PDAD pin powers down ADC between recordings; VCC = 2.4 V minimizes current draw. Use Value: 88 dB SNR and 32 mW total power allow >12 hours of continuous recording on a 500 mAh cell. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar stereo audio codec applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AK4531VN | 24-bit resolution, higher SNR (100 dB), but requires 4.5–5.5 V supply and lacks integrated de-emphasis | Better suited for professional-grade recording; incompatible with 2.4 V battery rails | Select AK4531VN only if resolution and SNR outweigh voltage constraints and external de-emphasis circuitry |
| CS4272-CQZ | 24-bit, 192 kHz capable, SPI/I²C configuration interface, but larger 28-pin SSOP package and 3.3 V minimum supply | Targets higher-end portable audio with programmable features; not drop-in for space-limited TSSOP layouts | Choose CS4272-CQZ when system requires flexible sample rate support and software-configurable filters |
Compared with AK4531VN and CS4272-CQZ, PCM3008T/2K offers optimal trade-off of 16-bit fidelity, ultra-low 2.1–3.6 V operation, TSSOP footprint, and hardware-deemphasis - making it uniquely suitable for cost-sensitive, battery-powered consumer audio where simplicity and size dominate.
Availability
PCM3008T/2K is available at Aetrix Electronics and suitable for digital video cameras, portable MD players, and smart voice recorders requiring stable component supply across extended production lifecycles.
Supply support for PCM3008T/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 PCM3008T/2K belongs to TI's legacy audio codec product line designed specifically for cost-sensitive, low-power portable consumer electronics requiring integrated stereo ADC/DAC functionality in minimal footprint.
FAQ
What is the operating temperature range for PCM3008T/2K?
The PCM3008T/2K is specified for operation from –25°C to +85°C when sampling at >24 kHz, and from –25°C to +70°C at lower sampling rates. This range supports deployment in consumer portable devices such as digital camcorders and handheld audio players exposed to ambient environmental variations without thermal derating.
Does PCM3008T/2K support I²S interface format?
No, PCM3008T/2K does not support I²S. It uses a proprietary PCM interface with left-justified format for ADC input and right-justified format for DAC output, synchronized via LRCK, BCK, and SYSCK. External logic or MCU firmware must handle format translation if interfacing with I²S-only controllers.
How is de-emphasis configured on PCM3008T/2K?
De-emphasis on PCM3008T/2K is controlled by DEM0 and DEM1 pins: Low/Low enables 44.1 kHz, High/High enables 32 kHz, High/Low enables 48 kHz, and Low/High disables de-emphasis. These are static hardware-select pins - no register writes or serial commands are required.
What is the purpose of the VCOM pin on PCM3008T/2K?
VCOM on PCM3008T/2K provides the 0.5 × VCC common-mode reference voltage for both ADC and DAC sections. It must be decoupled to GND with a 0.1 µF ceramic and ≥1 µF electrolytic capacitor placed adjacent to the pin to maintain analog performance and suppress dynamic errors during signal conversion.
Can PCM3008T/2K operate with a 3.3 V supply?
Yes, PCM3008T/2K operates across 2.1 V to 3.6 V, so 3.3 V is fully supported. At 3.3 V, THD+N improves slightly (e.g., –85 dB ADC), and supply current increases to ~22 mA (ADC+DAC active), remaining well within absolute maximum ratings and typical application margins.
PCM3008T/2K Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Stereo Audio
- Data Interface:
- Serial
- Resolution (Bits):
- 16 b
- Number of ADCs / DACs:
- 2 / 2
- Sigma Delta:
- Yes
- S/N Ratio, ADCs / DACs (db) Typ:
- 88 / 92
- Dynamic Range, ADCs / DACs (db) Typ:
- 88 / 92
- Voltage - Supply, Analog:
- 2.1V ~ 3.6V
- Voltage - Supply, Digital:
- 2.1V ~ 3.6V
- Operating Temperature:
- -25°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
PCM3008T/2K FAQ
1.How can I place an order for PCM3008T/2K through Aetrix?
Please submit a Request for Quotation (RFQ) for PCM3008T/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 PCM3008T/2K reliable?
The price and inventory of PCM3008T/2K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCM3008T/2K is usually 5 days.
3.What payment methods are accepted for PCM3008T/2K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCM3008T/2K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCM3008T/2K?
PCM3008T/2K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCM3008T/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 PCM3008T/2K?
For technical support, including PCM3008T/2K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCM3008T/2K requirements.
6.How does Aetrix verify that PCM3008T/2K is sourced from the original manufacturer or authorized distributors?
All PCM3008T/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 PCM3008T/2K meets industry standards.
7.What is the process for return or replacement of PCM3008T/2K?
All PCM3008T/2K units undergo pre-shipment inspection (PSI). If there is an issue with PCM3008T/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 PCM3008T/2K part is unused and in its original packaging.
Return procedure for PCM3008T/2K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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