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Texas Instruments PCM3168ATPAPRQ1
- Part No.:
- PCM3168ATPAPRQ1
- Manufacturer:
- Texas Instruments
- Category:
- CODECS
- Package:
- 64-PowerTQFP
- Datasheet:
-
PCM3168ATPAPRQ1.pdf
- Description:
- IC CODEC AUDIO 24 BIT 64HTQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,337
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Product details
Overview
PCM3168ATPAPRQ1 from Texas Instruments is an automotive-grade, 24-bit, 6-channel ADC / 8-channel DAC audio codec with differential analog I/O, supporting up to 96 kHz (ADC) and 192 kHz (DAC) sampling rates, 5 V analog / 3.3 V digital supplies, and I²C/SPI control - deployed in car audio external amplifiers and AVN systems.
For engineers reviewing the PCM3168ATPAPRQ1 datasheet, PCM3168ATPAPRQ1 pinout, PCM3168ATPAPRQ1 application, or PCM3168ATPAPRQ1 equivalent, key selection considerations include its AEC-Q100 Grade 2 qualification (–40°C to +105°C), TDM/DSP/I²S interface flexibility, differential input/output capability (2 VRMS / 8 VPP), and integrated highpass/lowpass filters for automotive signal chain integrity.
Technical Context
The PCM3168ATPAPRQ1 implements dual ΔΣ modulator architecture: six independent 24-bit ADC channels with decimation filtering (±0.035 dB passband ripple, –75 dB stopband attenuation) and eight 24-bit DAC channels with 4×/8× oversampling digital filters (±0.0018 dB passband ripple). It supports simultaneous ADC/DAC operation with independent master/slave audio interface modes.
Control is implemented via hardware pins (MODE, RST, MS/ADR0/MD0) or two-wire I²C/two-wire SPI serial interface, enabling digital attenuation, soft mute, and de-emphasis (32/44.1/48 kHz). The device includes overflow (OVF) and zero-detect (ZERO) status flags, and operates with separate analog/digital ground planes (AGNDAD1/2, AGNDDA1/2, DGND1/2).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ADC Channels | 6-channel, 24-bit ΔΣ with differential/single-ended selectable inputs; supports 8–96 kHz sampling - enables multi-mic or multi-line-in automotive capture. |
| DAC Channels | 8-channel, 24-bit ΔΣ with differential outputs only; supports 8–192 kHz sampling - drives 4× stereo or 8-channel amplifier stages directly. |
| Analog I/O Voltage | Differential input: 2 VRMS full-scale; differential output: 8 VPP - matches automotive line-level and power-amp input requirements without external gain staging. |
| Dynamic Performance | ADC: 107 dB SNR (differential, 48 kHz); DAC: 112 dB SNR (differential, 48 kHz) - meets THX/Hi-Res Audio fidelity thresholds for premium cabin audio. |
| Audio Interface | I²S, left/right-justified, DSP, and TDM formats; independent ADC/DAC clocking (BCKAD/LRCKAD, BCKDA/LRCKDA) - enables flexible routing in multi-processor infotainment architectures. |
| Power Supply | 5 V analog (VCCAD1/2, VCCDA1/2), 3.3 V digital (VDD1/2); 162 mA typical ICC at 48 kHz - compatible with standard automotive DC/DC rail partitioning. |
| Operating Temperature | –40°C to +105°C (AEC-Q100 Grade 2 qualified) - validated for under-dash and head-unit mounting locations with thermal cycling stress. |
Pinout & Package
Package: HTQFP-64 (10.00 mm × 10.00 mm body, PowerPAD exposed thermal pad connected to analog ground).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST | Active-low reset/power-down control | Hardware-initiated full device reset or standby entry; 5-V tolerant, internal pulldown - simplifies MCU-independent power sequencing. |
| OVF | ADC overflow flag output | Open-drain indicator of ADC saturation on any channel; used for automatic gain control (AGC) feedback in noise-cancelling mic arrays. |
| ZERO | DAC zero-crossing detect flag | Signals when DAC output crosses mid-rail (0 V differential); enables glitch-free mute/unmute transitions in amplifier enable logic. |
| VIN1+ / VIN1− | Differential analog input pair (ADC1) | High-CMRR (80 dB) input stage; 45 kΩ input impedance - rejects engine noise and alternator ripple in unshielded harness environments. |
| VOUT1+ / VOUT1− | Differential analog output pair (DAC1) | 8 VPP swing into 5 kΩ AC-coupled load; integrated analog lowpass filter - drives Class-D amplifier inputs without external RC filtering. |
| SCKI | System clock input | Accepts 2.048–36.864 MHz clock (128× to 768× fS); supports multiple sampling rates via single crystal - reduces BOM count in multi-rate systems. |
| MC/SCL/FMT | I²C clock / SPI mode select / hardware format control | Multi-function pin: I²C SCL (open-drain), SPI mode select, or hardware control FMT - enables shared bus topology or minimal-pin configuration. |
| MODE | Control interface mode select | Selects SPI (VDD), I²C (DGND), or hardware control (pull-up/pull-down); defines pin function mapping - eliminates firmware dependency for basic setup. |
Key Features
| Feature | Design Value |
|---|---|
| Independent ADC/DAC audio interfaces | Separate BCK/LRCK domains allow asynchronous sample rate conversion between microphone array (48 kHz) and speaker playback (96 kHz) without external FIFOs. |
| Digital de-emphasis | Configurable 32/44.1/48 kHz de-emphasis in DAC path - restores high-frequency response for legacy CD/DVD audio sources in modern head units. |
| On-chip highpass filter | 0.96 Hz cutoff at 48 kHz (–3 dB); programmable bypass - removes subsonic rumble from vehicle vibration while preserving bass content. |
| Flexible power-down modes | Full power-down (300 μA ICC, 50 μA IDD); ADC-only or DAC-only shutdown - enables dynamic power scaling during voice assistant idle states. |
| Integrated reference and common-mode buffers | VCOMAD/VCOMDA (0.5 × VCC) with ≤10 kΩ output impedance; ±1 μA sourcing/sinking - eliminates need for external bias networks in differential I/O designs. |
Applications
| Car Audio External Amplifier | Automotive AVN Head Unit |
|---|---|
Use Scenario: High-fidelity rear-seat entertainment system with 8-channel Class-D amplifier driving 4-zone speakers. IC Role / Device Role / Timing Role: PCM3168ATPAPRQ1 acts as the central DAC engine, converting digital audio streams (TDM from SoC) to differential analog signals synchronized to LRCKDA/BCKDA. Use Value: 112 dB SNR and 8 VPP output drive amplifier inputs directly, eliminating external op-amps and reducing THD+N in multi-stage signal paths. |
Use Scenario: Infotainment head unit with 6-mic beamforming array and 8-channel speaker output for surround sound. IC Role / Device Role / Timing Role: PCM3168ATPAPRQ1 serves as dual-role codec: ADC captures mic data (I²S slave), DAC renders playback (TDM master), with independent clock domains. Use Value: Simultaneous 6-in/8-out operation with OVF/ZERO flags enables real-time AGC and pop-free muting - critical for voice assistant wake-word detection. |
| Automotive Active Noise Cancellation | Telematics Audio Gateway |
Use Scenario: In-cabin ANC system using error mics and reference mics to generate anti-noise signals fed to door/subwoofer speakers. IC Role / Device Role / Timing Role: PCM3168ATPAPRQ1 provides low-latency ADC acquisition (6 channels) and DAC output (8 channels) with deterministic group delay (27/fS sec). Use Value: Matched ADC/DAC group delay and 80 dB CMRR ensure phase-coherent cancellation signals - suppresses engine harmonics below 200 Hz. |
Use Scenario: Telematics control unit aggregating audio from Bluetooth handsfree, cellular modem, and emergency call (eCall) microphones. IC Role / Device Role / Timing Role: PCM3168ATPAPRQ1 functions as a TDM concentrator: multiplexes 6 ADC channels onto one TDM bus for SoC processing. Use Value: Hardware-controlled TDM slot assignment (via MODE/MS pins) enables fixed-latency, no-software-overhead audio routing for eCall priority channels. |
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 pinout, register map, and electrical specs except temperature rating and qualification. | Lacks AEC-Q100 qualification; not approved for under-hood or safety-critical audio paths. | Select PCM3168A only for non-automotive or lab-bench evaluation where extended temperature range is unnecessary. |
| TLV320AIC3254 | Lower channel count (2-in/6-out), integrated miniDSP, smaller QFN-32 package; 100 dB SNR DAC, 93 dB SNR ADC. | Targeted at compact head units with embedded audio processing; lacks TDM support and differential outputs. | Choose TLV320AIC3254 when space-constrained PCB layout and on-chip DSP features outweigh need for 6-in/8-out differential I/O. |
Compared with PCM3168A and TLV320AIC3254, PCM3168ATPAPRQ1 uniquely delivers AEC-Q100 Grade 2 reliability, full 6/8-channel differential I/O, and TDM/DSP interface support - making it the only option qualified for production automotive amplifier and AVN modules requiring long-term thermal stability and EMI robustness.
Availability
PCM3168ATPAPRQ1 is available at Aetrix Electronics and suitable for car audio external amplifiers, automotive AVN head units, and active noise cancellation systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for PCM3168ATPAPRQ1 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 automotive electronics, with decades of expertise in high-fidelity audio signal chains and AEC-Q100-qualified components.
The PCM3168ATPAPRQ1 belongs to TI's Burr-Brown™ automotive audio codec family, designed specifically for demanding in-vehicle applications requiring wide dynamic range, differential noise immunity, and seamless integration with SoCs and Class-D amplifiers.
FAQ
What is the maximum sampling rate supported by PCM3168ATPAPRQ1 for ADC and DAC?
The PCM3168ATPAPRQ1 supports up to 96 kHz for the 6-channel ADC and up to 192 kHz for the 8-channel DAC. This asymmetry allows high-resolution playback (e.g., HD radio, streaming) while maintaining robust capture bandwidth for voice and ANC. Both rates operate with full 24-bit resolution and specified dynamic performance (107 dB SNR ADC, 112 dB SNR DAC at 48 kHz).
Does PCM3168ATPAPRQ1 support TDM audio interface mode?
Yes, PCM3168ATPAPRQ1 fully supports TDM (Time-Division Multiplexed) mode on both ADC and DAC sides, with configurable slot counts and frame synchronization. TDM timing is explicitly defined in Sections 8.10 and 8.11 of the SBAS452A datasheet, including slave/master operation, pulse width constraints, and setup/hold requirements for DIN/DOUT lines.
How is the PCM3168ATPAPRQ1 qualified for automotive use?
The PCM3168ATPAPRQ1 is AEC-Q100 Grade 2 qualified (–40°C to +105°C operating temperature), with tested ESD robustness (±4000 V HBM, ±750 V CDM), thermal resistance (RθJA = 26.1°C/W), and lifetime reliability under automotive thermal cycling and humidity conditions - confirmed per TI's official PCM3168A-Q1 product folder and datasheet revision history.
Can PCM3168ATPAPRQ1 operate with only hardware control, without I²C or SPI?
Yes, PCM3168ATPAPRQ1 supports full hardware control mode using four dedicated pins (MODE, RST, MS/ADR0/MD0, MC/SCL/FMT). In this mode, audio format, interface direction, and basic functions like mute/de-emphasis are set by resistor pulls or GPIO levels - eliminating firmware dependencies for boot-time initialization in safety-critical systems.
What are the analog output voltage specifications for PCM3168ATPAPRQ1?
The PCM3168ATPAPRQ1 provides differential analog outputs with 8 VPP full-scale swing (e.g., VOUT1+ to VOUT1−), referenced to VCOMDA (0.5 × VCCDA1). It drives 5 kΩ AC-coupled or 15 kΩ DC-coupled loads, and includes an integrated analog lowpass filter with –0.04 dB flatness at 20 kHz - meeting automotive amplifier input requirements without external passive filtering.
PCM3168ATPAPRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 64-PowerTQFP
- Packaging:
- Tape & Reel (TR)
- 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)
PCM3168ATPAPRQ1 FAQ
1.How can I place an order for PCM3168ATPAPRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for PCM3168ATPAPRQ1 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 PCM3168ATPAPRQ1 reliable?
The price and inventory of PCM3168ATPAPRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCM3168ATPAPRQ1 is usually 5 days.
3.What payment methods are accepted for PCM3168ATPAPRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCM3168ATPAPRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCM3168ATPAPRQ1?
PCM3168ATPAPRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCM3168ATPAPRQ1 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 PCM3168ATPAPRQ1?
For technical support, including PCM3168ATPAPRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCM3168ATPAPRQ1 requirements.
6.How does Aetrix verify that PCM3168ATPAPRQ1 is sourced from the original manufacturer or authorized distributors?
All PCM3168ATPAPRQ1 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 PCM3168ATPAPRQ1 meets industry standards.
7.What is the process for return or replacement of PCM3168ATPAPRQ1?
All PCM3168ATPAPRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with PCM3168ATPAPRQ1, 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 PCM3168ATPAPRQ1 part is unused and in its original packaging.
Return procedure for PCM3168ATPAPRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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