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Texas Instruments TLV320AIC32IRHB
- Part No.:
- TLV320AIC32IRHB
- Manufacturer:
- Texas Instruments
- Category:
- CODECS
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
TLV320AIC32IRHB.pdf
- Description:
- IC STEREO AUDIO CODEC 32-QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,840
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Product details
Overview
TLV320AIC32 from Texas Instruments is a low-power stereo audio CODEC with integrated stereo headphone amplifier, six analog audio inputs (supporting single-ended or fully differential configurations), and programmable microphone bias, AGC, and digital audio effects. It delivers 14-mW stereo 48-kHz playback at 3.3-V analog supply, 92-dB ADC SNR, and 100-dB DAC SNR - optimized for battery-powered portable audio/telephony systems including smartphones and PDAs.
For engineers reviewing the TLV320AIC32 datasheet, TLV320AIC32 pinout, TLV320AIC32 application, or TLV320AIC32 equivalent, key selection considerations include its 32-pin QFN package, I²C control interface, flexible audio serial bus (I²S/LJF/RJF/DSP/TDM), programmable PLL for 8–96 kHz sampling rates, and dual-domain power architecture (1.65–1.95 V core, 2.7–3.6 V analog, 1.1–3.6 V I/O).
Technical Context
The TLV320AIC32 integrates delta-sigma stereo ADC and DAC cores operating from 8 kHz to 96 kHz, each with independent programmable gain stages: ADC supports up to +59.5 dB PGA gain in 0.5-dB steps; DAC includes digital interpolation filtering with ±0.06-dB passband ripple and 65-dB stopband attenuation. Its register-based modular power control enables dynamic block shutdown, reducing playback current to 3.0 mA (AVDD+DRVDD) at 48 kHz.
The device implements a multi-page I²C register map (two active pages), requiring explicit page selection via address-0 register writes. Audio routing is fully configurable via internal mix/mux logic, supporting simultaneous input mixing (e.g., MIC1+MIC2+LINE3), output path selection (DAC → HPLOUT/HPRCOM or LINE_OUT_L+/R−), and effect processing (3D/bass/treble/EQ/de-emphasis) applied pre-DAC or post-ADC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Sampling Rate | 8–96 kHz - supports all standard audio rates including 44.1 kHz and 48 kHz for CD-quality and streaming applications. |
| DAC SNR | 100 dB A-weighted - enables high-fidelity line-output playback with minimal audible noise floor. |
| ADC SNR | 92 dB A-weighted - preserves signal integrity for low-level microphone inputs with up to +59.5 dB analog gain. |
| Power Consumption | 14 mW stereo playback at 48 kHz - achieved via selective block power-down and dual-supply optimization (1.8 V core / 3.3 V analog). |
| Output Drive | Stereo 8-Ω speaker drive at 500 mW/channel (BTL), plus capless 16-Ω headphone output - eliminates need for DC-blocking capacitors in compact designs. |
| Control Interface | I²C (7-bit address 0x18), standard/fast mode - enables configuration and real-time parameter adjustment from host processor without dedicated SPI lines. |
| Package | 5 × 5 mm, 32-pin QFN (RHB) - surface-mount footprint compatible with high-density portable PCB layouts. |
Pinout & Package
TLV320AIC32 is housed in a thermally enhanced 5 × 5 mm, 32-pin QFN package (RHB designation) with exposed thermal pad. Pin numbering follows standard QFN convention (pin 1 top-left, counterclockwise). All analog and digital supplies are segregated to minimize crosstalk; ground pins (AVSS1, AVSS2, DRVSS, DVSS) must be independently routed to avoid noise coupling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| MCLK | Master clock input | Accepts 512 kHz–50 MHz crystal or oscillator input; feeds programmable PLL for precise audio rate synthesis. |
| BCLK / WCLK | Audio serial bus clock and word sync | Configurable as master or slave; supports I²S, left/right-justified, DSP, and TDM timing modes. |
| DIN / DOUT | Serial audio data I/O | Full-duplex audio data transfer; supports 16/20/24/32-bit word lengths and variable frame alignment. |
| SCL / SDA | I²C control interface | 7-bit slave address 0x18; enables register read/write access for configuration, gain, and effect settings. |
| MIC1L/R–MIC3L/R | Analog input terminals | Six configurable inputs: three stereo pairs accepting mic/line-level signals with programmable input resistance (80 kΩ) and attenuation (0–12 dB). |
| HPLOUT / HPROUT | High-power headphone outputs | Capable of driving 16-Ω headphones directly (capless) or 8-Ω speakers in BTL mode at 500 mW/channel. |
| LINE_OUT_L± / R± | Fully differential line outputs | Low-noise, high-impedance outputs (10 kΩ load) with programmable common-mode voltage (1.35–1.8 V). |
| MICBIAS | Programmable microphone bias | Four selectable voltages (2.0/2.25/2.5/2.75 V) for electret condenser microphones; sourced from AVDD. |
| RESETB | Active-low hardware reset | Must be pulsed low ≥10 ns after supplies stabilize to initialize register map and ensure proper I²C response. |
Key Features
| Feature | Design Value |
|---|---|
| Modular Power Control | Independent enable/disable of ADC, DAC, headphone drivers, and PLL reduces system standby current to 0.1 µA. |
| Programmable Audio Effects | On-chip digital filtering enables real-time 3D enhancement, bass/treble boost, midrange shaping, and de-emphasis without host CPU load. |
| Flexible Input Architecture | Three stereo input pairs with mix/mux capability and 0–12 dB programmable attenuation per channel support diverse sensor topologies. |
| Capless Headphone Output | Eliminates four external DC-blocking capacitors in 16-Ω headphone designs, saving board space and cost. |
| Wide Supply Range Support | Separate 1.65–1.95 V (DVDD), 2.7–3.6 V (AVDD/DRVDD), and 1.1–3.6 V (IOVDD) rails allow coexistence with modern low-voltage SoCs and PMICs. |
Applications
| Smartphone Voice Capture | Portable Media Player Playback |
|---|---|
Use Scenario: Dual-mic noise suppression during VoIP calls using beamforming algorithms on host processor. IC Role / Device Role / Timing Role: Stereo ADC captures synchronized left/right mic signals with 92-dB SNR and programmable +59.5-dB PGA gain for weak electret mics. Use Value: Enables clear far-field voice pickup at low power (4 mA total for stereo record), leveraging AGC and MICBIAS voltage selection for consistent signal level across varying acoustic environments. |
Use Scenario: High-fidelity music playback through wired headphones in battery-constrained handheld devices. IC Role / Device Role / Timing Role: Stereo DAC converts 48-kHz I²S stream to analog; capless HPLOUT/HPROUT drives 16-Ω headphones with 94-dB SNR and <0.022% THD+N. Use Value: Delivers CD-quality audio at 14-mW total power, eliminating DC-blocking caps and reducing BOM count by four components per channel. |
| Industrial Handheld Terminal Audio | Wireless Headset Base Station |
Use Scenario: Audio interface for ruggedized field terminals requiring line-in recording and speaker playback in noisy environments. IC Role / Device Role / Timing Role: Six-input mux routes LINE1/LINE2 to ADC; BTL-configured HPLOUT/HPROUT drives 8-Ω speaker at 500 mW/channel with 48-dB PSRR. Use Value: Supports simultaneous record/playback with >90-dB channel separation and robust power supply rejection, enabling intelligible audio even with shared 3.3-V rail noise. |
Use Scenario: USB-to-analog bridge in Bluetooth headset docking station with analog line-out to auxiliary speakers. IC Role / Device Role / Timing Role: DAC processes 44.1-kHz USB audio stream; fully differential LINE_OUT_L±/R± deliver low-distortion 1.414-VRMS output into 10-kΩ loads. Use Value: Provides jitter-immune analog output via programmable PLL clock recovery and 100-dB DAC SNR, ensuring clean audio without external reclocking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar stereo audio CODEC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV320AIC3101 | Lower power (12-mW playback), no headphone amp, 24-pin QFN, fixed 1.8-V IOVDD only | Targeted at ultra-low-power voice-only applications without local playback; lacks capless headphone drive and line outputs | Select when system requires minimal footprint and only mic-in + codec processing - not for headphone/speaker output. |
| PCM3168A | Higher performance (110-dB DAC SNR), 8-channel ADC/DAC, 48-pin HTQFP, no integrated headphone amp | Designed for professional audio interfaces and multi-channel recording; requires external amplification and larger PCB area | Choose for studio-grade multi-channel capture/playback where SNR and channel count outweigh portability and integration needs. |
Compared with TLV320AIC32, TLV320AIC3101 trades headphone/line output integration and flexible I/O voltage for smaller size and lower static power, while PCM3168A provides superior audio fidelity and channel scalability at the cost of higher BOM complexity and absence of embedded amplifiers.
Availability
TLV320AIC32 is available at Aetrix Electronics and suitable for smartphone voice capture, portable media player playback, industrial handheld terminal audio, and wireless headset base station applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TLV320AIC32 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 expertise in precision audio signal chains and low-power design.
The TLV320AIC32 belongs to TI's portable audio CODEC product line, engineered specifically to reduce bill-of-materials cost, PCB area, and power consumption in space-constrained, battery-operated consumer and industrial devices.
FAQ
What is the minimum required hardware reset pulse width for reliable TLV320AIC32 initialization?
The TLV320AIC32 requires an active-low RESETB pulse of at least 10 nanoseconds after all power supplies (AVDD, DRVDD, DVDD, IOVDD) have stabilized within specification. Failure to meet this timing may result in unresponsive I²C communication or incorrect register defaults. This requirement is explicitly defined in the Absolute Maximum Ratings and Recommended Operating Conditions sections of the TLV320AIC32 datasheet.
Does TLV320AIC32 support capless headphone output operation, and what load impedances are validated?
Yes, TLV320AIC32 supports capless (DC-coupled) headphone output operation for 16-Ω loads, as confirmed by electrical characteristics and typical application circuits in the datasheet. It delivers up to 30 mW into 16 Ω and 15 mW into 32 Ω with <0.028% THD+N at full scale. The device provides four programmable output common-mode voltage options (1.35 V to 1.8 V) to optimize headroom and distortion for different headphone types.
What are the supported audio serial data bus formats for TLV320AIC32, and how are they configured?
TLV320AIC32 supports I²S, left-justified, right-justified, DSP, and TDM audio serial data formats. Configuration is performed via register writes to the audio interface control registers (page 0, addresses 0x0C–0x0E), which define word length (16/20/24/32 bits), format, and master/slave mode. The BCLK and WCLK pins serve as bidirectional clocks depending on selected mode, enabling interoperability with diverse host processors and DSPs.
Can TLV320AIC32 drive an 8-Ω speaker directly, and what is the maximum output power per channel?
Yes, TLV320AIC32 can drive an 8-Ω speaker directly using its high-power output drivers in bridge-tied-load (BTL) configuration. The datasheet specifies 500 mW per channel into 8 Ω with <0.028% THD+N at 1 kHz, enabled by pairing HPLOUT/HPLCOM and HPROUT/HPRCOM outputs. This capability eliminates the need for external Class-D amplifiers in compact speaker-enabled portable designs.
What is the function of the MICBIAS pin on TLV320AIC32, and what voltage options are available?
The MICBIAS pin on TLV320AIC32 provides programmable bias voltage for electret condenser microphones. Four factory-set options are available: 2.0 V, 2.25 V, 2.5 V, and 2.75 V - selected via register configuration. Each setting is tested to source up to 4 mA into a 750-Ω load, ensuring stable operation across temperature and supply variations as documented in the Electrical Characteristics table.
TLV320AIC32IRHB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- Stereo Audio
- Data Interface:
- PCM Audio Interface
- Resolution (Bits):
- 24 b
- Number of ADCs / DACs:
- 2 / 2
- Sigma Delta:
- Yes
- S/N Ratio, ADCs / DACs (db) Typ:
- 92 / 100
- Dynamic Range, ADCs / DACs (db) Typ:
- 92 / 100
- Voltage - Supply, Analog:
- 2.7V ~ 3.6V
- Voltage - Supply, Digital:
- 1.65V ~ 1.95V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-VQFN (5x5)
TLV320AIC32IRHB FAQ
1.How can I place an order for TLV320AIC32IRHB through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV320AIC32IRHB 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 TLV320AIC32IRHB reliable?
The price and inventory of TLV320AIC32IRHB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV320AIC32IRHB is usually 5 days.
3.What payment methods are accepted for TLV320AIC32IRHB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV320AIC32IRHB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV320AIC32IRHB?
TLV320AIC32IRHB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV320AIC32IRHB 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 TLV320AIC32IRHB?
For technical support, including TLV320AIC32IRHB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV320AIC32IRHB requirements.
6.How does Aetrix verify that TLV320AIC32IRHB is sourced from the original manufacturer or authorized distributors?
All TLV320AIC32IRHB 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 TLV320AIC32IRHB meets industry standards.
7.What is the process for return or replacement of TLV320AIC32IRHB?
All TLV320AIC32IRHB units undergo pre-shipment inspection (PSI). If there is an issue with TLV320AIC32IRHB, 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 TLV320AIC32IRHB part is unused and in its original packaging.
Return procedure for TLV320AIC32IRHB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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