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Texas Instruments PCM3008T/2KG4
- Part No.:
- PCM3008T/2KG4
- Manufacturer:
- Texas Instruments
- Category:
- CODECS
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
PCM3008T/2KG4.pdf
- Description:
- IC STEREO CODEC 16BIT 16-TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,936
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Product details
Overview
PCM3008T/2KG4 from Texas Instruments is a low-power, single-ended 16-bit stereo audio codec IC with integrated delta-sigma ADC and DAC, operating from 2.1 V to 3.6 V supply and supporting 8–48 kHz sampling rates. It delivers THD+N of –84 dB (ADC) and –88 dB (DAC), SNR of 88 dB and 92 dB respectively, and features pop-noise-free muting for portable digital video cameras and MD players.
For engineers reviewing the PCM3008T/2KG4 datasheet, PCM3008T/2KG4 pinout, PCM3008T/2KG4 application, or PCM3008T/2KG4 equivalent, key selection considerations include its TSSOP-16 package, independent ADC/DAC power-down control, left-justified ADC / right-justified DAC data format, and built-in analog antialiasing and FIR filters eliminating external passive components.
Technical Context
The PCM3008T/2KG4 implements a 5th-order delta-sigma modulator architecture in both ADC and DAC paths, with 64× oversampling for the ADC and 8× oversampling for the DAC. Its digital decimation filter includes a high-pass function (–3 dB at 0.078fS), while the DAC interpolation filter integrates programmable de-emphasis (32/44.1/48 kHz) and fade-in/fade-out logic.
It uses a shared analog/digital supply (VCC) and ground (GND), with internal reference generation requiring only one external capacitor on VCOM. System clock inputs (SYSCK) must be 256fS, 384fS, or 512fS; the device auto-detects mode and divides higher clocks internally to drive its 256fS digital core.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit ADC and DAC - supports CD-quality audio digitization and playback without external bit-depth extension. |
| THD+N (ADC) | –84 dB at –0.5 dBFS - enables clean capture of line-level analog signals with minimal harmonic distortion. |
| THD+N (DAC) | –88 dB at 0 dBFS - ensures high-fidelity analog output suitable for headphone drivers and line outputs. |
| SNR / Dynamic Range | 88 dB (ADC), 92 dB (DAC), A-weighted - meets EIAJ and consumer audio performance requirements. |
| Supply Voltage | 2.1 V to 3.6 V - compatible with single-cell Li-ion and dual-cell alkaline battery systems. |
| Power Dissipation | 32 mW typical at VCC = 2.4 V - enables operation in thermally constrained portable enclosures. |
| Sampling Rate | 8 kHz to 48 kHz - covers voice recording, telephony, and full-bandwidth stereo audio applications. |
Pinout & Package
PCM3008T/2KG4 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) | Single-ended voltage inputs with 30 kΩ input impedance; require AC coupling and bias via VCOM. |
| VOUTL / VOUTR | DAC analog output (L/R) | Single-ended voltage outputs with 0.6 × VCC p-p swing; include integrated analog LPF and FIR filtering. |
| VCOM | ADC/DAC common reference | Internal mid-supply reference node; requires 0.1 µF + 1 µF decoupling to GND for stable common-mode voltage. |
| DIN / DOUT | Serial audio data I/O | Supports left-justified 16-bit ADC data and right-justified 16-bit DAC data; Schmitt-trigger inputs/outputs. |
| LRCK / BCK / SYSCK | Audio timing interface | LRCK = frame sync, BCK = bit clock (32/48/64 cycles per frame), SYSCK = master system clock (256/384/512 × fS). |
| PDAD / PDDA | Independent power-down control | Active-low pins enabling zero-current ADC mute (DOUT = 0) or DAC mute (VOUT = VCOM) without affecting the other path. |
| DEM0 / DEM1 | DAC de-emphasis select | Two-pin binary encoding selects 32 kHz, 44.1 kHz, or 48 kHz de-emphasis; disables when DEM0=H, DEM1=L. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated analog front-end | On-chip single-to-differential conversion eliminates need for external op-amps or resistive networks at ADC inputs. |
| Digital HPF in ADC path | Removes DC offset and subsonic content before decimation; configurable cutoff at 0.078fS (≈3.5 Hz at 44.1 kHz). |
| Pop-noise free muting | Fade-in/fade-out logic in DAC path and forced-zero DOUT during ADC power-down prevent audible transients. |
| De-emphasis filtering | Programmable digital de-emphasis (32/44.1/48 kHz) compensates for pre-emphasized CD or DAT source material. |
| Low-voltage operation | Full functionality down to 2.1 V allows direct integration into battery-powered systems without LDO regulation. |
Applications
| Digital Video Camera | Portable MiniDisc Player |
|---|---|
|
Use Scenario: Capturing and playing back stereo audio during video recording and playback in compact handheld devices. IC Role / Device Role / Timing Role: Audio codec handling simultaneous analog-to-digital conversion of microphone input and digital-to-analog conversion of playback stream. Use Value: Single-chip integration reduces BOM count and PCB area; low 32 mW power enables >2-hour battery life with dual AA cells. |
Use Scenario: High-fidelity audio decoding and analog output for portable MiniDisc playback units with mechanical constraints. IC Role / Device Role / Timing Role: Stereo DAC with 44.1 kHz de-emphasis support and ADC for line-in recording, synchronized to MD transport clock. Use Value: Built-in 44.1 kHz de-emphasis matches CD-standard pre-emphasis; 92 dB SNR preserves dynamic range of MD source material. |
| USB Audio Adapter | VoIP Handset |
|
Use Scenario: Adding stereo audio I/O to embedded USB host controllers in cost-sensitive peripherals. IC Role / Device Role / Timing Role: Audio interface bridging USB audio class protocol (via MCU) to analog headset/mic connections. Use Value: Left/right-justified serial interface simplifies connection to standard I²S-capable microcontrollers; no external clock generator needed. |
Use Scenario: Full-duplex voice processing in battery-powered VoIP handsets requiring low idle power and noise immunity. IC Role / Device Role / Timing Role: Low-latency ADC/DAC pair with independent power-down for talk/listen modes and robust 8–16 kHz sampling. Use Value: Independent PDAD/PDDA control cuts power to unused path (e.g., mute mic during playback), reducing system quiescent current by >50%. |
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 | 18-bit resolution, 3.3 V only, no integrated analog filters, requires external op-amps for single-ended I/O. | Better SNR (95 dB) but higher BOM cost and layout complexity; lacks pop-noise suppression logic. | Choose AK4531VN only if 18-bit depth is mandatory and external analog circuitry is acceptable. |
| CS4270-CQZ | 24-bit, 3.3 V/5 V tolerant, supports I²S/Left-Justified formats, includes volume control registers, higher power (65 mW). | Targeted at professional audio interfaces; over-specified for portable consumer use; no VCOM-based single-ended biasing. | Prefer CS4270-CQZ for designs needing digital volume control or multi-format flexibility, not for ultra-low-power portables. |
Compared with AK4531VN and CS4270-CQZ, PCM3008T/2KG4 offers optimal balance of 16-bit fidelity, single-supply operation, integrated analog filtering, and <32 mW dissipation-making it uniquely suited for space- and battery-constrained consumer audio endpoints where component count and thermal management are critical.
Availability
PCM3008T/2KG4 is available at Aetrix Electronics and suitable for digital video cameras, portable MD players, and USB audio adapters requiring stable component supply across production lifecycles.
Supply support for PCM3008T/2KG4 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 audio signal chain expertise.
The PCM3008T/2KG4 belongs to TI's legacy audio codec portfolio designed specifically for cost-sensitive, battery-operated consumer electronics requiring high-fidelity stereo conversion in minimal footprint.
FAQ
What is the minimum supply voltage required for full functionality of the PCM3008T/2KG4?
The PCM3008T/2KG4 operates across a supply range of 2.1 V to 3.6 V. At 2.1 V, all specifications-including THD+N, SNR, and sampling rate support up to 48 kHz-are maintained per the datasheet's recommended operating conditions. Below 2.1 V, functionality is not guaranteed and may result in initialization failure or digital lockup.
Does the PCM3008T/2KG4 support I²S format, or only left-justified and right-justified modes?
The PCM3008T/2KG4 does not natively support I²S format. It accepts left-justified 16-bit data for the ADC and right-justified 16-bit data for the DAC, with LRCK polarity and BCK edge alignment matching standard I²S timing-but the data alignment itself is fixed per path and cannot be reconfigured to true I²S (MSB-first, MSB-aligned to LRCK rising edge).
How does the PCM3008T/2KG4 handle loss of synchronization between SYSCK and LRCK?
When SYSCK and LRCK drift by more than ±4 BCK cycles per sample period, the PCM3008T/2KG4 halts internal DAC operation within 1/fS, holding VOUT at the last valid output value, and forces ADC DOUT to zero until resynchronization occurs and tADCDLY2/tDACDLY2 delays elapse-preventing audible clicks but requiring system-level clock recovery logic.
Can the PCM3008T/2KG4 operate without external reset circuitry?
No-the PCM3008T/2KG4 lacks an internal power-on reset circuit. External assertion of PDAD = LOW and PDDA = LOW for ≥40 ns, followed by release, is mandatory after power application to initialize internal state machines. Failure to do so results in undefined DOUT/VOUT behavior and potential digital lockup.
What is the purpose of the VCOM pin on the PCM3008T/2KG4, and how must it be decoupled?
VCOM provides the internal mid-supply reference (0.5 × VCC) for both ADC and DAC analog sections. It must be decoupled to GND using a 0.1 µF ceramic capacitor in parallel with a ≥1 µF chemical (tantalum or aluminum) capacitor, placed as close as possible to the pin to minimize noise coupling and ensure stable common-mode voltage during dynamic operation.
PCM3008T/2KG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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/2KG4 FAQ
1.How can I place an order for PCM3008T/2KG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for PCM3008T/2KG4 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/2KG4 reliable?
The price and inventory of PCM3008T/2KG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCM3008T/2KG4 is usually 5 days.
3.What payment methods are accepted for PCM3008T/2KG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCM3008T/2KG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCM3008T/2KG4?
PCM3008T/2KG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCM3008T/2KG4 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/2KG4?
For technical support, including PCM3008T/2KG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCM3008T/2KG4 requirements.
6.How does Aetrix verify that PCM3008T/2KG4 is sourced from the original manufacturer or authorized distributors?
All PCM3008T/2KG4 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/2KG4 meets industry standards.
7.What is the process for return or replacement of PCM3008T/2KG4?
All PCM3008T/2KG4 units undergo pre-shipment inspection (PSI). If there is an issue with PCM3008T/2KG4, 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/2KG4 part is unused and in its original packaging.
Return procedure for PCM3008T/2KG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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