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Texas Instruments TLV320AIC22CPTR
- Part No.:
- TLV320AIC22CPTR
- Manufacturer:
- Texas Instruments
- Category:
- CODECS
- Package:
- 48-LQFP
- Datasheet:
-
TLV320AIC22CPTR.pdf
- Description:
- IC DUAL VOIP CODEC 48-LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,410
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Product details
Overview
TLV320AIC22CPTR from Texas Instruments is a dual-channel, 16-bit audio codec IC designed for voice-over-IP (VoIP), speakerphone, and telephony terminal applications. It integrates two independent ADCs and DACs, programmable analog crosspoint routing, 8-/16-kHz sampling, G.711-compliant A-law/μ-law companding, and differential handset/headset/line/speaker drivers - all operating from a single 3.3-V supply.
For engineers reviewing the TLV320AIC22CPTR datasheet, TLV320AIC22CPTR pinout, TLV320AIC22CPTR application, or TLV320AIC22CPTR equivalent, key selection criteria include dual-channel voice codec functionality with integrated PGAs, I²C/serial control, 48-pin LQFP packaging, -40°C to +85°C industrial temperature range, and support for cascaded 8-channel systems via McBSP time-slot assignment.
Technical Context
The TLV320AIC22CPTR implements two fully independent sigma-delta ADC/DAC channels with decimation/interpolation filtering compliant with G.712 and G.722 standards. Each channel features programmable preamplifier gain (0/14/23/42 dB), PGA range (-36 dB to +12 dB in 1.5-dB steps), and hardware/software power-down control.
It supports flexible digital interface modes: master/slave McBSP with time-slot multiplexing (AD0/AD1 configurable), plus parallel I²C control (7-bit address 11100xx) for register programming without interrupting data flow. The analog crosspoint enables dynamic routing of any input (HSIN, HDIN, MCIN, LNIN, CIIN) to either codec path.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ADC/DAC Resolution | 16-bit linear or 8-bit A-law/μ-law companded per G.711 - enables VoIP packet compatibility and legacy telephony integration. |
| Sampling Rate | 8 kHz or 16 kHz - matches PSTN and wideband voice standards; supports pole-selectable filters for line output (16–64 kHz). |
| SNR + Distortion | 77 dB (ADC typical), 78 dB (DAC typical) - meets G.712 voice quality requirements for echo-cancellation and full-duplex operation. |
| Input/Output Architecture | Differential analog I/O with dedicated 150-Ω headset, 150-Ω handset, 600-Ω line, and 8-Ω speaker drivers - eliminates external coupling capacitors and reduces PCB area. |
| Power Supply | Single 3.3-V supply (3.0–3.6 V); 120-mW typical consumption - simplifies power design and supports low-power VoIP endpoints. |
| Operating Temperature | -40°C to +85°C - qualified for industrial-grade embedded telephony equipment and IP phone base stations. |
| Package | 48-terminal LQFP (PT), 7 mm × 7 mm - surface-mount compatible with automated assembly and thermal management for sustained voice processing. |
Pinout & Package
TLV320AIC22CPTR is housed in a 48-pin Low-Profile Quad Flatpack (LQFP-PT) package with exposed thermal pad (not electrically connected). Pin functions are validated per SPAS041B Rev. January 2003, including separate analog/digital power (AVDD1/2/3, DVDD) and ground (AVSS1/2/3, DVSS) domains to minimize noise coupling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AD0, AD1 | I²C address / time-slot assignment inputs | Configure 7-bit I²C slave address (11100xx) or assign McBSP time slots for dual-codec interleaving. |
| BCLK, FSYNC, DIN, DOUT | McBSP serial interface signals | Support time-division multiplexed 16-bit data transfer with external C54x/C6x DSP; BCLK generated internally in master mode. |
| HSINP/HSINM, HSOUTP/HSOUTM | Handset differential input/output | 42-dB programmable preamp gain; 150-Ω differential drive capability - enables direct connection to hybrid circuits without external amplifiers. |
| MCINP/MCINM, MCBIAS | Electret microphone interface | 2.5-V bias voltage output with 42-dB preamp gain - powers condenser mics and sets optimal SNR for near-field voice capture. |
| LNINP/LNINM, LNOUTP/LNOUTM | Line-port differential input/output | 68-kΩ input impedance; 600-Ω differential load drive; pole-selectable filters - supports analog subscriber line interfacing per ITU-T G.712. |
| PWRDWN, RESET | Hardware control inputs | Active-high PWRDWN disables output drivers and clocks while preserving register state; RESET initializes all registers to defaults. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent sigma-delta codecs | Enables simultaneous full-duplex voice capture and playback on separate analog paths - critical for echo cancellation in speakerphones. |
| Programmable analog crosspoint | Routes any of five analog inputs (handset, headset, mic, line, caller ID) to either ADC channel via software - eliminates external analog switches. |
| G.711 A-law/μ-law companding | Reduces 16-bit linear PCM to 8-bit compressed frames - directly interoperable with VoIP gateways and PSTN trunk interfaces. |
| Integrated 8-Ω speaker driver | Delivers ±2.5 V differential output at full scale - drives low-impedance speakers without external Class-D amplifier stage. |
| I²C + McBSP dual-control interface | Allows real-time register configuration over I²C while streaming audio over McBSP - avoids time-slot conflicts and simplifies host firmware. |
| Four-device cascade capability | Up to eight channels via time-slot expansion using AD0/AD1 - scales from single-line IP phones to multi-line conference terminals. |
Applications
| Voice-over-IP (VoIP) Endpoint | IP Phone Base Station |
|---|---|
|
Use Scenario: Embedded VoIP adapter converting analog PSTN lines to SIP/RTP streams. IC Role / Device Role / Timing Role: Dual-channel codec performs simultaneous off-hook detection, DTMF generation, and bidirectional voice conversion at 8 kHz. Use Value: Integrated caller ID amplifier (CIINP/CIINM) and G.711 companding eliminate external signal conditioning and reduce BOM count by 3+ components. |
Use Scenario: Multi-line desk phone supporting headset, handset, and speakerphone modes. IC Role / Device Role / Timing Role: TLV320AIC22CPTR manages four analog paths (HDIN/HDOUT, HSIN/HSOUT, SPOUT, LNIN) with dynamic crosspoint reconfiguration. Use Value: Differential 150-Ω headset outputs and 2.5-V MCBIAS enable plug-and-play accessory support without discrete biasing or level-shifting circuitry. |
| Digital Speakerphone System | Telecom Gateway Interface |
|
Use Scenario: Full-duplex conference speakerphone with acoustic echo cancellation (AEC). IC Role / Device Role / Timing Role: Two ADC channels capture far-end and near-end audio simultaneously; DAC channels replay processed output to speaker and headset. Use Value: 77-dB ADC SNR + 80-dB interchannel isolation ensures clean reference signals for AEC algorithms - avoids convergence failure due to crosstalk. |
Use Scenario: Analog telephony adapter (ATA) bridging legacy PBX to VoIP infrastructure. IC Role / Device Role / Timing Role: Line-port interface (LNIN/LNOUT) handles 600-Ω balanced analog loop signaling with G.712-compliant filtering and 42-dB preamp gain. Use Value: Pole-selectable line-output filters (16–64 kHz) match varying DSL/ISDN line conditions - maintains voice fidelity across diverse telco environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel audio codec applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV320AIC23BPW | Higher SNR (90 dB), stereo 24-bit resolution, I²S/MSB-justified interface only - no McBSP or G.711 companding. | Targeted at high-fidelity consumer audio, not telephony; lacks handset/headset preamps and caller ID input. | Select TLV320AIC23BPW only when wideband audio quality outweighs VoIP protocol compliance and analog interface flexibility. |
| PCM3002E | Single 16-bit codec, no integrated analog front-end (no PGAs, no microphone bias), requires external op-amps for line/mic conditioning. | Suitable for cost-sensitive audio recording but cannot replace TLV320AIC22CPTR's complete telephony signal chain in one package. | Choose PCM3002E only if system already includes discrete analog conditioning and only basic ADC/DAC functionality is needed. |
Compared with TLV320AIC22CPTR, TLV320AIC23BPW offers superior audio fidelity but omits telephony-specific features like G.711, caller ID, and differential handset drivers; PCM3002E reduces integration but increases BOM complexity and layout effort for voice applications.
Availability
TLV320AIC22CPTR is available at Aetrix Electronics and suitable for VoIP adapters, IP phone base stations, digital speakerphones, and telecom gateway interfaces requiring stable component supply across extended product lifecycles.
Supply support for TLV320AIC22CPTR 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 communications markets.
The TLV320AIC22CPTR belongs to TI's voice and audio codec product line, engineered specifically for telephony infrastructure and endpoint devices requiring integrated analog front-ends, protocol compliance, and multi-interface flexibility.
FAQ
What is the primary function of the TLV320AIC22CPTR in a voice system?
The TLV320AIC22CPTR serves as a dual-channel audio codec IC that performs simultaneous analog-to-digital and digital-to-analog conversion for voice signals. It integrates two independent 16-bit sigma-delta ADCs and DACs, programmable preamplifiers, differential drivers for handset/headset/line/speaker, and G.711 companding - enabling full-featured VoIP and telephony endpoints without external signal conditioning. Its role in the TLV320AIC22CPTR-based system is central to analog interface bridging and real-time voice processing.
Does the TLV320AIC22CPTR support both I²C and McBSP interfaces simultaneously?
Yes, the TLV320AIC22CPTR supports concurrent use of I²C and McBSP interfaces: I²C (via SDA/SCL pins) handles register configuration and control, while McBSP (via DIN/DOUT/BCLK/FSYNC) carries real-time audio data. The I2C/SPI pin selects the control interface mode - when high, I²C is active and McBSP time slots 0–1 are ignored for control; when low, McBSP time slots 0–1 carry register writes. This separation ensures uninterrupted audio streaming during device setup in TLV320AIC22CPTR implementations.
What analog inputs does the TLV320AIC22CPTR support, and how are they routed?
The TLV320AIC22CPTR supports five differential analog inputs: handset (HSIN), headset (HDIN), microphone (MCIN), line (LNIN), and caller ID (CIIN). An internal analog crosspoint matrix - programmable via I²C or McBSP - routes any of these inputs to either of the two ADC channels. This routing is fully software-configurable and enables dynamic reassignment (e.g., switching between headset and handset during call transfer) without external switches or relays in TLV320AIC22CPTR designs.
Can multiple TLV320AIC22CPTR devices be synchronized for more than two channels?
Yes, up to four TLV320AIC22CPTR devices can be cascaded to achieve eight-channel operation. Each device is assigned unique time slots via AD0/AD1 pins, and all share a common McBSP bus (BCLK, FSYNC) from the host DSP. The master/slave (M/S) pin configures clock sourcing, and frame synchronization ensures deterministic slot alignment. This scalability allows TLV320AIC22CPTR-based systems to expand from single-line phones to multi-line conference units without changing core firmware architecture.
What is the purpose of the MCBIAS pin on the TLV320AIC22CPTR?
The MCBIAS pin on the TLV320AIC22CPTR provides a regulated 2.5-V DC bias voltage to power electret condenser microphones (ECMs). It delivers sufficient current to operate standard ECMs and is internally connected to the microphone preamplifier stage. This integrated bias eliminates the need for external resistive bias networks or charge pumps, reducing component count and improving SNR consistency across TLV320AIC22CPTR microphone interfaces.
TLV320AIC22CPTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 48-LQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Type:
- VOIP
- Data Interface:
- Serial
- Resolution (Bits):
- 16 b
- Number of ADCs / DACs:
- 2 / 2
- Sigma Delta:
- Yes
- S/N Ratio, ADCs / DACs (db) Typ:
- 84 / 92
- Dynamic Range, ADCs / DACs (db) Typ:
- 87 / 92
- 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:
- 48-LQFP (7x7)
TLV320AIC22CPTR FAQ
1.How can I place an order for TLV320AIC22CPTR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV320AIC22CPTR 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 TLV320AIC22CPTR reliable?
The price and inventory of TLV320AIC22CPTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV320AIC22CPTR is usually 5 days.
3.What payment methods are accepted for TLV320AIC22CPTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV320AIC22CPTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV320AIC22CPTR?
TLV320AIC22CPTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV320AIC22CPTR 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 TLV320AIC22CPTR?
For technical support, including TLV320AIC22CPTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV320AIC22CPTR requirements.
6.How does Aetrix verify that TLV320AIC22CPTR is sourced from the original manufacturer or authorized distributors?
All TLV320AIC22CPTR 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 TLV320AIC22CPTR meets industry standards.
7.What is the process for return or replacement of TLV320AIC22CPTR?
All TLV320AIC22CPTR units undergo pre-shipment inspection (PSI). If there is an issue with TLV320AIC22CPTR, 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 TLV320AIC22CPTR part is unused and in its original packaging.
Return procedure for TLV320AIC22CPTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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