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Texas Instruments PCM3168ATPAPQ1
- Part No.:
- PCM3168ATPAPQ1
- Manufacturer:
- Texas Instruments
- Category:
- CODECS
- Package:
- 64-PowerTQFP
- Datasheet:
-
PCM3168ATPAPQ1.pdf
- Description:
- IC CODEC AUDIO 24 BIT 64HTQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
PCM3168ATPAPQ1 from Texas Instruments is a 24-bit, automotive-grade audio codec with six differential analog inputs and eight differential analog outputs, supporting sampling rates up to 192 kHz (DAC) and 96 kHz (ADC), THD+N of –94 dB (DAC, differential), SNR of 112 dB (DAC), and integrated digital filters for car audio external amplifiers and AVN systems.
For engineers reviewing the PCM3168ATPAPQ1 datasheet, PCM3168ATPAPQ1 pinout, PCM3168ATPAPQ1 application, or PCM3168ATPAPQ1 equivalent, key selection criteria include its AEC-Q100 Grade 2 qualification (–40°C to +105°C), HTQFP-64 PowerPAD™ package, I²C/SPI programmable interface, TDM/DSP/I²S audio interface flexibility, and differential input/output architecture enabling high common-mode noise rejection in vehicle ECU environments.
Technical Context
The PCM3168ATPAPQ1 integrates independent ΔΣ ADC and DAC cores: the six-channel ADC supports 8–96 kHz sampling with ±0.035 dB passband ripple and –75 dB stopband attenuation; the eight-channel DAC supports 8–192 kHz sampling with ±0.0018 dB passband ripple and identical stopband performance. Both paths include on-chip highpass filters (0.96 Hz at 48 kHz) and overflow/zero detect flags.
It operates with dual 5-V analog supplies (VCCAD1/2, VCCDA1/2) and dual 3.3-V digital supplies (VDD1/2), features hardware mode control via MODE/RST/MS/MC pins, and supports master/slave operation for both ADC and DAC audio interfaces independently across I²S, left/right-justified, DSP, and TDM formats.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 24-bit ADC and DAC - enables >110 dB dynamic range and precise low-level audio signal capture/playback |
| Sampling Rate | ADC: 8–96 kHz; DAC: 8–192 kHz - supports CD, DVD-Audio, and high-res audio playback in automotive infotainment |
| Analog Input | Differential: 2 VRMS full-scale - rejects common-mode noise in noisy vehicle harnesses |
| Analog Output | Differential: 8 VPP - drives balanced line receivers without external amplification |
| THD+N | DAC: –94 dB (differential, 48 kHz) - meets high-fidelity requirements for premium car audio systems |
| SNR / Dynamic Range | DAC: 112 dB A-weighted - exceeds CD-quality threshold (96 dB) by >16 dB for clean background silence |
| Control Interface | I²C and SPI compatible - allows integration with microcontrollers lacking dedicated audio peripherals |
| Operating Temperature | –40°C to +105°C - qualified per AEC-Q100 Grade 2 for under-dash and head-unit mounting |
Pinout & Package
PCM3168ATPAPQ1 uses the HTQFP-64 PowerPAD™ package (10.00 mm × 10.00 mm body, 12 mm × 12 mm footprint), with exposed thermal pad connected to analog ground for enhanced thermal dissipation in automotive applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN1+ / VIN1− | ADC1 differential analog input | Accepts balanced microphone or line-level signals; 45 kΩ input impedance minimizes loading on source |
| VOUT1+ / VOUT1− | DAC1 differential analog output | Drives external Class-D amplifier inputs directly; 8 VPP swing ensures robust signal-to-noise margin |
| LRCKAD / LRCKDA | Audio word clock I/O | Configurable as master or slave; supports TDM slot alignment for multi-device synchronization |
| BCKAD / BCKDA | Audio bit clock I/O | Supports up to 768×fs system clock ratios; timing tolerances ensure jitter-immune data transfer |
| SCKI | System clock input | Accepts 2.048–36.864 MHz crystal or oscillator; feeds PLL for all internal clocks |
| MC/SCL/FMT | I²C clock / format select | Multi-function pin: I²C SCL in software mode; hardware format control in H/W mode |
| RST | Active-low reset/power-down | Asynchronous reset with 5-V tolerance; initiates internal power-on sequence and register initialization |
| OVF / ZERO | ADC overflow / DAC zero detect flag | Open-drain status outputs enable interrupt-driven error handling without polling |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent audio interfaces | ADC and DAC each support I²S, left/right-justified, DSP, and TDM formats - enables asymmetric routing (e.g., ADC in TDM, DAC in I²S) |
| Hardware control mode | Four-pin configuration (MODE/RST/MS/MC) sets basic functions without firmware - reduces boot-time latency in safety-critical systems |
| On-chip digital de-emphasis | Configurable for 32/44.1/48 kHz - eliminates need for external FIR filtering in legacy CD playback paths |
| Integrated analog reference buffers | VCOMAD/VCOMDA at 0.5×VCC with <10 kΩ output impedance - stabilizes common-mode voltage for differential stages |
| Flexible power sequencing | Independent analog/digital supply domains (5 V/3.3 V) with defined startup order - simplifies compliance with automotive power tree requirements |
| Automotive qualification | AEC-Q100 Grade 2, HTQFP-64 PowerPAD™ - validated for vibration, thermal cycling, and ESD (±4 kV HBM) per automotive standards |
Applications
| Car Audio External Amplifier | Automotive AVN Head Unit |
|---|---|
Use Scenario: High-power Class-D amplifier module receiving multi-channel digital audio from head unit over TDM bus. IC Role / Device Role / Timing Role: PCM3168ATPAPQ1 acts as DAC interface and analog output driver, converting serialized TDM data into eight differential analog signals for amplifier input stages. Use Value: Differential outputs reject engine noise coupled into harnesses; 112 dB SNR preserves dynamic range during quiet cabin conditions. |
Use Scenario: Central infotainment processor routing audio from Bluetooth, USB, and tuner sources to multiple zones. IC Role / Device Role / Timing Role: PCM3168ATPAPQ1 serves as ADC front-end for analog mic/line inputs and DAC back-end for analog speaker outputs, operating in simultaneous dual-interface mode. Use Value: Independent master/slave capability allows ADC to sync to tuner clock while DAC syncs to display controller, eliminating inter-zone audio skew. |
| Automotive Rear-Seat Entertainment | Telematics Audio Gateway |
Use Scenario: Seat-back display with local analog mic input and headphone output, sharing main SoC's audio bus. IC Role / Device Role / Timing Role: PCM3168ATPAPQ1 functions as slave ADC/DAC, time-multiplexing four input channels (mic/headset) and four output channels (headphones/speakers) via TDM slots. Use Value: Hardware control mode enables fast mute/unmute during call handover; zero-detect flag triggers automatic gain adjustment on headset plug-in. |
Use Scenario: Cellular modem module integrating voice call audio path between cellular baseband and vehicle hands-free system. IC Role / Device Role / Timing Role: PCM3168ATPAPQ1 provides ADC for analog hands-free mic and DAC for speaker output, interfacing directly with baseband processor's I²S port. Use Value: 96 kHz ADC sampling captures wideband voice (up to 48 kHz), improving speech intelligibility in noisy road environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar audio codec applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PCM3168A | Consumer-grade (–40°C to +85°C); identical electrical specs and pinout | Lacks AEC-Q100 qualification; unsuitable for under-hood or dash-mounted automotive use | Select PCM3168ATPAPQ1 when operating temperature exceeds +85°C or automotive qualification is required. |
| TLV320AIC3254 | Lower channel count (2-in/6-out); integrated LDOs; smaller QFN-32 package | Targets portable and space-constrained modules; lacks TDM support and automotive temp range | Choose TLV320AIC3254 for cost-sensitive, non-automotive designs requiring integrated power management. |
Compared with PCM3168A and TLV320AIC3254, PCM3168ATPAPQ1 uniquely delivers automotive-grade reliability, full 6-in/8-out differential I/O, and TDM scalability-making it the only option for high-channel-count, noise-immune automotive amplifier interfaces.
Availability
PCM3168ATPAPQ1 is available at Aetrix Electronics and suitable for car audio external amplifiers, automotive AVN head units, and telematics audio gateways requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for PCM3168ATPAPQ1 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 leadership in high-performance audio signal chain solutions.
The PCM3168A family was designed specifically for automotive infotainment and premium audio systems, emphasizing differential signaling, AEC-Q100 compliance, and flexible digital audio interface support to meet stringent EMI and thermal requirements in vehicles.
FAQ
What is the maximum sampling rate supported by PCM3168ATPAPQ1 for ADC and DAC?
The PCM3168ATPAPQ1 supports ADC sampling rates up to 96 kHz and DAC sampling rates up to 192 kHz. This asymmetry enables high-resolution playback while maintaining robust capture fidelity. The DAC's 192 kHz capability is verified at 128×fs system clock (SCKI = 128 fS), and both paths maintain specified THD+N and SNR across their respective ranges. PCM3168ATPAPQ1 achieves this using independent delta-sigma modulators with optimized decimation/interpolation filters.
Does PCM3168ATPAPQ1 support TDM audio interface mode?
Yes, PCM3168ATPAPQ1 fully supports TDM (Time-Division Multiplexed) mode for both ADC and DAC interfaces, with configurable slot counts and frame synchronization. It handles single-rate (256×fs), dual-rate (128×fs), and quad-rate (64×fs) TDM configurations, allowing up to 32 channels per interface. PCM3168ATPAPQ1 implements dedicated timing requirements for TDM slave/master operation, including precise LRCK pulse width control and BCK edge alignment per TI SBAS452A Rev A.
What is the purpose of the OVF and ZERO pins on PCM3168ATPAPQ1?
The OVF (overflow flag) pin signals ADC saturation events, while the ZERO pin indicates DAC output crossing zero amplitude-both are open-drain status outputs used for real-time monitoring and interrupt generation. These flags allow firmware to dynamically adjust input gain or apply soft mute without continuous register polling. PCM3168ATPAPQ1 asserts OVF when any ADC channel exceeds full-scale; ZERO pulses on every DAC zero-crossing, aiding in click/pop suppression during mute transitions.
How does PCM3168ATPAPQ1 handle power supply sequencing?
PCM3168ATPAPQ1 requires separate 5-V analog (VCCAD1/2, VCCDA1/2) and 3.3-V digital (VDD1/2) supplies, with recommended startup order: analog supplies first, then digital. The device incorporates internal power-on reset circuitry triggered by VDD rise, ensuring registers initialize before clocking begins. PCM3168ATPAPQ1 specifies absolute max ratings and recommended operating conditions for supply voltage differences (<0.1 V between AGND/DGND domains) to prevent latch-up in automotive power domains.
Is PCM3168ATPAPQ1 pin-compatible with the commercial PCM3168A?
Yes, PCM3168ATPAPQ1 is pin-compatible and functionally identical to the commercial PCM3168A, sharing the same HTQFP-64 PowerPAD™ footprint, pin assignment, and register map. The sole difference is automotive qualification: PCM3168ATPAPQ1 is AEC-Q100 Grade 2 qualified (–40°C to +105°C) and tested for automotive reliability, while PCM3168A is rated for consumer temperature range (–40°C to +85°C). PCM3168ATPAPQ1 may be substituted directly where automotive grade is required.
PCM3168ATPAPQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 64-PowerTQFP
- Packaging:
- Tray
- Product Status:
- Active
- Type:
- Audio
- Data Interface:
- Serial
- Resolution (Bits):
- 24 b
- Number of ADCs / DACs:
- 6 / 8
- Sigma Delta:
- Yes
- S/N Ratio, ADCs / DACs (db) Typ:
- 107 / 112 (Differential), 104 / 112 (Single-Ended)
- Dynamic Range, ADCs / DACs (db) Typ:
- 107 / 112 (Differential), 104 / 112 (Single-Ended)
- Voltage - Supply, Analog:
- 4.5V ~ 5.5V
- Voltage - Supply, Digital:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 105°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 64-HTQFP (10x10)
PCM3168ATPAPQ1 FAQ
1.How can I place an order for PCM3168ATPAPQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for PCM3168ATPAPQ1 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 PCM3168ATPAPQ1 reliable?
The price and inventory of PCM3168ATPAPQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCM3168ATPAPQ1 is usually 5 days.
3.What payment methods are accepted for PCM3168ATPAPQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCM3168ATPAPQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCM3168ATPAPQ1?
PCM3168ATPAPQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCM3168ATPAPQ1 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 PCM3168ATPAPQ1?
For technical support, including PCM3168ATPAPQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCM3168ATPAPQ1 requirements.
6.How does Aetrix verify that PCM3168ATPAPQ1 is sourced from the original manufacturer or authorized distributors?
All PCM3168ATPAPQ1 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 PCM3168ATPAPQ1 meets industry standards.
7.What is the process for return or replacement of PCM3168ATPAPQ1?
All PCM3168ATPAPQ1 units undergo pre-shipment inspection (PSI). If there is an issue with PCM3168ATPAPQ1, 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 PCM3168ATPAPQ1 part is unused and in its original packaging.
Return procedure for PCM3168ATPAPQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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