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Texas Instruments PCM3793RHBR
- Part No.:
- PCM3793RHBR
- Manufacturer:
- Texas Instruments
- Category:
- CODECS
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
PCM3793RHBR.pdf
- Description:
- IC STER AUDIO CODEC 16BIT 32-QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,385
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Product details
Overview
PCM3793RHBR from Texas Instruments is a 16-bit stereo audio CODEC with integrated Class-D digital speaker amplifier, headphone amplifier, microphone bias, analog mixing, and programmable tone/3D effects. It delivers 700 mW + 700 mW into 8 Ω speakers, 40 mW + 40 mW into 16 Ω headphones, and supports 5–50 kHz sampling with 93 dB DAC dynamic range. Designed for portable audio systems requiring compact, low-power, multi-function audio processing.
For engineers reviewing the PCM3793RHBR datasheet, PCM3793RHBR pinout, PCM3793RHBR application, or PCM3793RHBR equivalent, this page provides verified technical context, real-world design values, validated alternatives, and supply-ready availability details - all specific to the PCM3793RHBR variant in 32-pin QFN (RHB) package with full speaker output capability.
Technical Context
The PCM3793RHBR implements delta-sigma ADC/DAC architecture with decimation and interpolation filters, supporting I²S, left/right-justified, and DSP audio formats. Its analog front end includes three stereo input pairs (single-ended or mono differential), programmable gain amplifiers (–12 dB to +30 dB), and 0/20 dB microphone boost; the back end integrates BTL speaker outputs, capless headphone drivers, and analog mixing paths independent of digital conversion.
Control is implemented via 2-wire I²C or 3-wire SPI interface, enabling register-level configuration of volume, tone, ALC, high-pass/notch filters, 3D sound, and power-up sequencing per functional block. System clock flexibility (3.072–18.432 MHz) allows operation without PLL, and zero-cross detection minimizes zipper noise during digital attenuation changes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - Ensures sufficient SNR headroom for consumer-grade portable audio playback and recording. |
| DAC Dynamic Range | 93 dB (A-weighted) - Enables high-fidelity playback with minimal audible noise floor in battery-powered devices. |
| ADC Dynamic Range | 90 dB (A-weighted) - Supports clean microphone recording at low signal levels without excessive preamp gain. |
| Speaker Output Power | 700 mW + 700 mW @ 8 Ω - Delivers loud, efficient audio directly from battery without external amplifier stage. |
| Headphone Output Power | 40 mW + 40 mW @ 16 Ω - Drives standard earbuds without coupling capacitors in capless mode. |
| Sampling Frequency Range | 5 kHz to 50 kHz - Covers voice, narrowband telephony, and full-band music playback including DMB/PMP use cases. |
| Power Dissipation (Playback) | 7 mW @ 1.8 V/2.4 V, 48 kHz - Optimized for extended runtime in handheld devices with dual-supply domains. |
Pinout & Package
PCM3793RHBR is housed in a 5-mm × 5-mm, 32-pin QFN package (RHB) with exposed thermal pad. Pin numbering follows top-view orientation; AGND, DGND, and PGND are separately routed for analog, digital, and speaker power integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BCK | Serial bit clock input/output | Synchronizes audio data transfer; supports master/slave modes across I²S, left/right-justified, and DSP formats. |
| DIN / DOUT | Serial audio data in/out | Full-duplex audio streaming path; compatible with TI C5000/C6000 DSPs and ARM-based audio SoCs. |
| SPOLP / SPOLN / SPORP / SPORN | Class-D speaker output (L+/L−, R+/R−) | Differential BTL outputs enable high-efficiency 700 mW/channel into 8 Ω without LC filter. |
| HPOL/LOL / HPOR/LOR | Headphone/line output (stereo) | Configurable as capless headphone driver or line-level output; supports 16–32 Ω loads with 0.5-dB volume steps. |
| AIN1L / AIN1R / AIN2L / AIN2R / AIN3L / AIN3R | Analog inputs (3 stereo pairs) | Support mono differential mic input (AIN1L/R), single-ended line/mic inputs, and programmable PGA gain (–12 dB to +30 dB). |
| MICB | Microphone bias source | Provides stable 0.75×VCC bias voltage with 2 mA drive capability for electret condenser microphones. |
| HDTI | Headphone plug detection input | Enables automatic mute/speaker disable on jack insertion; status readable via register 77 (HPDS). |
| VPA / VCC / VDD / VIO | Independent power domains | Separate supplies: VPA (2.4–3.6 V) for speaker amp, VCC (2.4–3.6 V) for analog, VDD/VIO (1.71–3.6 V) for digital core/I/O. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Class-D speaker amplifier | Eliminates need for external power amp and LC filter; enables direct 700 mW/channel drive into 8 Ω speakers. |
| Capless headphone output | Removes DC-blocking capacitors from HPOL/HPOR paths - reduces BOM cost and PCB area in space-constrained designs. |
| Programmable 3-band tone control | Bass/mid/treble adjustable ±12 dB in 1-dB steps (registers 92–94); prevents clipping via automatic LPAE attenuation above 0 dB bass gain. |
| Dual-mode analog mixing | MXL/MXR mixers accept bypassed analog inputs (e.g., FM radio) and route to headphone/speaker outputs without ADC/DAC conversion. |
| Configurable high-pass & notch filters | HPF cutoff selectable at 4 Hz or 240 Hz; two programmable notch filters suppress CCD/motor noise - both assignable to DAC or ADC path. |
Applications
| Portable Audio Player | Cellular Phone |
|---|---|
Use Scenario: Standalone MP3/WMA playback with local storage and stereo speaker output. IC Role / Device Role / Timing Role: Primary audio CODEC handling DAC, speaker amplification, headphone drive, and analog mixing for auxiliary inputs. Use Value: Single-chip solution replaces discrete DAC + Class-D amp + headphone driver - reduces component count by ≥4 ICs and saves >25 mm² PCB area. | Use Scenario: Voice call audio path with headset support, noise suppression, and loudspeaker playback for speakerphone mode. IC Role / Device Role / Timing Role: Dual-role audio processor managing microphone ALC, echo cancellation prep, and simultaneous headphone/speaker output routing. Use Value: Integrated ALC (register 83), programmable notch filters, and HDTI-driven automatic mute enable robust hands-free operation without additional signal processors. |
| Video Camcorder | Digital Still Camera |
Use Scenario: Stereo audio capture during HD video recording with wind-noise reduction and automatic level management. IC Role / Device Role / Timing Role: High-SNR ADC front end with 20 dB mic boost, programmable HPF (4 Hz), and dual-notch filtering for mechanical vibration rejection. Use Value: 90 dB ADC dynamic range and configurable HPF/notch filters ensure clean audio capture even in noisy environments - no external op-amp or filter stages required. | Use Scenario: Playback of recorded voice memos or short video clips through built-in speaker or connected headphones. IC Role / Device Role / Timing Role: Low-power playback engine with capless headphone output, 7 mW playback dissipation, and fast wake-from-standby (<10 ms). Use Value: Ultra-low standby current (30 µW) and rapid power-up sequence extend battery life in intermittent-use imaging devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar stereo audio CODEC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PCM3794RHBR | Omits speaker amplifier outputs (SPOLP/SPOLN/SPORP/SPORN pins are NC); identical pinout and register map otherwise. | Suitable only where external speaker amp is used or speaker output is unnecessary - not drop-in for PCM3793RHBR speaker-driven designs. | Select PCM3794RHBR only when speaker amplification is handled externally and board layout must remain unchanged. |
| TLV320AIC3106IRHBR | Lower power (5 mW playback), no integrated speaker amp, but adds stereo mini-DSP, enhanced ALC, and wider supply range (1.65–3.6 V). | Better suited for ultra-low-power wearables or systems requiring programmable audio effects beyond 3D/tone control. | Choose TLV320AIC3106IRHBR when DSP-based audio enhancement or tighter power budget outweighs need for integrated speaker drive. |
Compared with PCM3794RHBR and TLV320AIC3106IRHBR, the PCM3793RHBR uniquely combines full Class-D speaker amplification, capless headphone drive, and analog mixing in a single 5×5 mm QFN - making it optimal for cost-sensitive, space-constrained portable audio with self-contained speaker output.
Availability
PCM3793RHBR is available at Aetrix Electronics and suitable for portable audio player, cellular phone, and digital camcorder applications requiring stable component supply and long-term production continuity.
Supply support for PCM3793RHBR 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 for industrial, automotive, and consumer markets.
The PCM3793RHBR belongs to TI's portable audio CODEC product line, engineered to integrate high-fidelity audio conversion, amplification, and signal conditioning into minimal footprint for battery-powered multimedia devices.
FAQ
What is the primary function of the PCM3793RHBR in an audio system?
The PCM3793RHBR serves as a complete stereo audio subsystem - performing analog-to-digital and digital-to-analog conversion, microphone biasing, programmable gain amplification, analog mixing, 3-band tone/3D enhancement, automatic level control, and Class-D speaker amplification. In the PCM3793RHBR, all these functions are integrated into one 32-pin QFN device, eliminating the need for multiple discrete audio components in portable designs.
Does the PCM3793RHBR support capless headphone output?
Yes, the PCM3793RHBR supports capless headphone output on HPOL/LOL and HPOR/LOR pins when configured via register 74 (HPS[2:0]). This eliminates external DC-blocking capacitors, reducing BOM cost and PCB area. The design maintains 0.5×VCC common-mode voltage and delivers 40 mW per channel into 16 Ω loads - confirmed in the Electrical Characteristics table under "Digital Input to Headphone Output Through DAC".
How does the PCM3793RHBR handle microphone input and automatic level control?
The PCM3793RHBR provides 0/20 dB selectable microphone boost on MICB, programmable PGA gain (–12 dB to +30 dB), and fully configurable ALC via register 83. ALC dynamically expands low-level signals and compresses peaks during recording - with independently adjustable attack/recovery times and threshold levels. This ensures consistent, distortion-free microphone capture across varying acoustic environments without host CPU intervention.
What are the key differences between PCM3793RHBR and PCM3794RHBR?
The PCM3793RHBR includes functional speaker amplifier outputs (SPOLP/SPOLN/SPORP/SPORN), while the PCM3794RHBR replaces those pins with no-connect (NC) terminals. All other features - pinout, register map, ADC/DAC performance, headphone/line outputs, and control interfaces - are identical. Therefore, PCM3794RHBR cannot replace PCM3793RHBR in speaker-driven applications without hardware redesign.
Is the PCM3793RHBR recommended for new designs?
No - Texas Instruments explicitly marks PCM3793RHBR as "Not Recommended for New Designs" in the official datasheet (SLES193C, Feb 2007). While fully functional and supported for existing production, designers should evaluate modern alternatives like TLV320AIC3106IRHBR or PCM3168A for new projects requiring extended longevity, lower power, or enhanced features.
PCM3793RHBR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- 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:
- 90 / 93
- Dynamic Range, ADCs / DACs (db) Typ:
- 90 / 93
- Voltage - Supply, Analog:
- 2.4V ~ 3.6V
- Voltage - Supply, Digital:
- 1.71V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-VQFN (5x5)
PCM3793RHBR FAQ
1.How can I place an order for PCM3793RHBR through Aetrix?
Please submit a Request for Quotation (RFQ) for PCM3793RHBR 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 PCM3793RHBR reliable?
The price and inventory of PCM3793RHBR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCM3793RHBR is usually 5 days.
3.What payment methods are accepted for PCM3793RHBR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCM3793RHBR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCM3793RHBR?
PCM3793RHBR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCM3793RHBR 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 PCM3793RHBR?
For technical support, including PCM3793RHBR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCM3793RHBR requirements.
6.How does Aetrix verify that PCM3793RHBR is sourced from the original manufacturer or authorized distributors?
All PCM3793RHBR 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 PCM3793RHBR meets industry standards.
7.What is the process for return or replacement of PCM3793RHBR?
All PCM3793RHBR units undergo pre-shipment inspection (PSI). If there is an issue with PCM3793RHBR, 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 PCM3793RHBR part is unused and in its original packaging.
Return procedure for PCM3793RHBR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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