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Texas Instruments TLC320AC01CFN
- Part No.:
- TLC320AC01CFN
- Manufacturer:
- Texas Instruments
- Category:
- CODECS
- Package:
- 28-LCC (J-Lead)
- Datasheet:
-
TLC320AC01CFN.pdf
- Description:
- IC CODEC AUDIO 14 BIT 28PLCC
- Quantity:
- Payment:
- Shipping:
Inventory:1,822
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Product details
Overview
TLC320AC01CFN from Texas Instruments is a single-supply, 14-bit analog interface circuit (AIC) integrating synchronous ADC and DAC channels, sixth-order switched-capacitor antialiasing and reconstruction filters, (sin x)/x compensation, and a programmable serial port for DSP interfacing. It operates at 5 V, supports 8–43.2 kHz sampling rates, delivers 70 dB typical signal-to-distortion ratio, and targets audio-band applications including modems and speech processing systems.
For engineers reviewing the TLC320AC01CFN datasheet, TLC320AC01CFN pinout, TLC320AC01CFN application, or TLC320AC01CFN equivalent, key selection considerations include its master/slave configurable timing architecture, differential analog I/O with programmable gain (0/±6/±12/±18 dB), monitor output capability, and support for stand-alone, codec-emulation, and multi-device daisy-chain topologies.
Technical Context
The TLC320AC01CFN implements dual synchronized signal paths: a 14-bit ADC channel with sixth-order elliptic low-pass antialiasing filter (3.6–10.8 kHz bandwidth) and single-pole high-pass filter, plus a 14-bit DAC channel with sixth-order elliptic low-pass reconstruction filter and second-order (sin x)/x correction. Both channels share a common 5-V supply and use 2s-complement data format.
Timing is controlled via MCLK (up to 10.368 MHz), with SCLK derived internally in master mode (÷4) or externally in slave/codec mode. Frame synchronization (FS/FSD), hardware control inputs (FC0/FC1), and register-programmable modes (stand-alone/master/slave/codec) enable flexible integration with TMS320C5x and other DSPs without external clock generation logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit ADC and DAC - enables 84 dB theoretical SNR for high-fidelity audio digitization and playback |
| Sampling Rate | 8 kHz to 43.2 kHz - programmable via A/B registers to match system clock and filter bandwidth requirements |
| Signal-to-Distortion Ratio | 70 dB typical - measured at 8 kHz fs, VDD = 5 V, indicating usable dynamic range for voice-band applications |
| Filter Bandwidth | 3.6 kHz to 10.8 kHz - selectable via B register; sixth-order elliptic response provides sharp roll-off for alias suppression |
| Power Dissipation | 100 mW typical - single 5-V supply operation simplifies power design versus dual-rail audio codecs |
| Analog I/O Architecture | Fully differential input/output - supports transformer-coupled hybrids, 600-Ω differential loads, and ground-referenced single-ended configurations |
| Serial Interface | Programmable master/slave SCLK/FS timing - eliminates need for external clock dividers when interfacing with TI C5x DSPs |
Pinout & Package
Package: 28-pin plastic DIP (FN package), through-hole mounting, 0°C to 70°C operating temperature range.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN+, IN− | Main differential ADC input | Accepts ±2.5 V bipolar full-scale signal; gain programmable via Register 4 (0/6/12 dB or squelch) |
| AUX IN+, AUX IN− | Auxiliary differential ADC input | Alternative input path; selectable via Register 5; supports summing of main + auxiliary inputs |
| OUT+, OUT− | Differential DAC output | Drives 3 V peak into 600-Ω load; gain programmable (0/−6/−12 dB or squelch); supports transformer hybrid interfaces |
| MON OUT | High-impedance monitor output | Provides buffered copy of analog input path; gain programmable (0/−8/−18 dB or squelch) for diagnostics |
| DIN, DOUT | Serial data I/O | 2s-complement 16-bit words synchronized to SCLK; DOUT outputs ADC results or register reads |
| FS, FSD | Frame sync I/O | FS initiates data transfer; FSD is delayed active-low output for cascading slaves (delay set by Register 7) |
| MCLK, SCLK | Clock inputs/outputs | MCLK drives all internal logic; SCLK is ÷4 output in master mode, input in slave/codec mode |
| M/S, FC0, FC1 | Mode and control inputs | M/S selects master (high) or slave (low); FC0/FC1 request secondary communication or phase shift |
| RESET, PWR DWN | Control inputs | Asynchronous reset initializes registers to defaults (16 kHz rate, 7.2 kHz BW); PWR DWN enables low-power standby |
| VDD/GND (ADC, DAC, DGTL) | Supply terminals | Separate analog (ADC/DAC) and digital (DGTL) supplies reduce noise coupling; VMID pins require bypass capacitors |
Key Features
| Feature | Design Value |
|---|---|
| Programmable filter bandwidth | 3.6–10.8 kHz via B register - matches telephony (8 kHz), wideband voice (14.4 kHz), or spectral analysis needs without external components |
| Dual differential input paths | Primary (IN±) and auxiliary (AUX IN±) with summing option - enables echo cancellation, dual-channel monitoring, or adaptive front-end routing |
| Monitor output with gain control | 0/−8/−18 dB or squelch - allows real-time analog input verification without loading signal source or disrupting main path |
| Master/slave daisy-chain capability | FSD output delays FS by programmable SCLK cycles - supports up to 8 devices on one DSP serial port (per Appendix D) |
| Hardware-assisted phase adjustment | FC0/FC1 pins trigger secondary serial comms or phase shift - enables precise timing alignment in multi-AIC systems without software overhead |
Applications
| Modem Analog Front End | Voice Band DSP Interface |
|---|---|
|
Use Scenario: Full-duplex data transmission over PSTN lines using QAM modulation and echo cancellation algorithms. IC Role / Device Role / Timing Role: ADC digitizes received analog line signal; DAC reconstructs transmit waveform; synchronous sampling ensures precise symbol timing alignment. Use Value: Integrated antialiasing/reconstruction filters eliminate external op-amp-based anti-aliasing networks; 70 dB distortion performance meets ITU-T V.34 spec requirements for 28.8 kbps operation. |
Use Scenario: Real-time speech encoding/decoding (e.g., G.729) on TMS320C54x DSP with minimal external components. IC Role / Device Role / Timing Role: Acts as dedicated audio-band AFE; configured in codec mode to accept DSP-generated SCLK/FS; handles all analog signal conditioning. Use Value: Eliminates need for separate op-amps, filters, and level-shifting circuits; 14-bit resolution preserves LPC coefficient fidelity during encode/decode loops. |
| Industrial Acoustic Sensor Interface | Multi-Channel Data Acquisition System |
|
Use Scenario: Condition and digitize vibration signals from piezoelectric sensors in predictive maintenance equipment. IC Role / Device Role / Timing Role: ADC channel captures broadband acoustic emissions (up to 10.8 kHz BW); MON OUT verifies sensor integrity pre-conversion. Use Value: Sixth-order elliptic filter provides >60 dB stopband attenuation at 12 kHz, rejecting switching noise from adjacent SMPS while preserving fault signatures. |
Use Scenario: Simultaneous sampling of 4 analog channels using daisy-chained TLC320AC01CFN devices on one DSP serial port. IC Role / Device Role / Timing Role: One device as master (M/S = high), others as slaves (M/S = low); FSD synchronizes frame timing across chain. Use Value: Reduces DSP serial port count requirement by 75%; eliminates inter-channel skew since all devices sample synchronously under shared MCLK. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog interface circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC320AC02CFN | Functionally identical architecture but tighter AC specs: 72 dB min SNR vs. 70 dB typ; lower THD+N; improved crosstalk (−75 dB vs. −65 dB) | Better suited for high-fidelity voice recording or spectral analysis where measurement accuracy is critical | Select TLC320AC02CFN when absolute distortion floor matters more than cost; pin- and register-compatible drop-in replacement |
| TLV320AIC10IPFB | Lower power (35 mW), 16-bit resolution, integrated PLL, but requires dual ±2.5 V supplies and lacks FSD daisy-chain output | Preferred for battery-powered portable DSP systems needing longer runtime and higher resolution | Choose TLV320AIC10IPFB only if dual supply is acceptable and master-slave chaining is unnecessary; not pin-compatible |
Compared with TLC320AC01CFN, TLC320AC02CFN offers verified SNR improvement without layout changes, while TLV320AIC10IPFB trades daisy-chain capability and single-supply simplicity for resolution and power efficiency-making each suitable for distinct system-level constraints.
Availability
TLC320AC01CFN is available at Aetrix Electronics and suitable for modems, voice-band DSP interfaces, industrial acoustic sensors, and multi-channel data acquisition systems requiring stable component supply and long-term obsolescence management.
Supply support for TLC320AC01CFN 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 digital signal technologies with decades of DSP and interface IC heritage.
The TLC320AC01CFN belongs to TI's legacy analog interface circuit family designed specifically for seamless integration with TMS320C5x DSPs in telecom and industrial signal-processing applications.
FAQ
What is the maximum sampling rate supported by the TLC320AC01CFN?
The TLC320AC01CFN supports a maximum ADC sampling rate of 43.2 kHz and a maximum DAC sampling rate of 25 kHz, as specified in Section 1.7 Note 3 of the SLAS057D datasheet. These limits arise from internal timing constraints in the switched-capacitor filter and conversion logic; exceeding them causes incomplete conversions and erroneous output data.
Does the TLC320AC01CFN require external antialiasing filters?
No, the TLC320AC01CFN integrates a sixth-order elliptic switched-capacitor antialiasing filter with programmable bandwidth (3.6–10.8 kHz). External filtering is only required when operating below 7.2 kHz sampling rate with B register values <10 or >20, per Table 1–1 Notes 1 and 2 in the TLC320AC01CFN datasheet.
How does the FSD pin enable daisy-chaining of multiple TLC320AC01CFN devices?
The FSD pin outputs a delayed version of the master's FS signal, with delay programmable via Register 7 (0–15 SCLK cycles). In a daisy-chain, the master's FSD connects to the first slave's FS, whose FSD connects to the next slave's FS-ensuring synchronized frame timing across all devices sharing one MCLK source, as detailed in Appendix D of the TLC320AC01CFN documentation.
Can the TLC320AC01CFN operate with a 3.3-V digital supply?
No-the TLC320AC01CFN requires a 5-V digital supply (DGTL VDD) per Section 3.2 "Recommended Operating Conditions" in the SLAS057D datasheet. Its digital I/O thresholds and internal logic are designed for 5-V TTL/CMOS compatibility; operation at 3.3 V is outside specification and may cause communication failures or register corruption.
What is the function of the MON OUT pin on the TLC320AC01CFN?
The MON OUT pin provides a high-impedance buffered copy of the selected analog input path (main or auxiliary), with programmable gain settings of 0 dB, −8 dB, −18 dB, or squelch (mute), as defined in Register 4. It enables non-intrusive signal monitoring during system bring-up or diagnostics without loading the primary signal path, per Section 1.4 and Figure 6–1 in the TLC320AC01CFN data manual.
TLC320AC01CFN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 28-LCC (J-Lead)
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- Audio
- Data Interface:
- Serial
- Resolution (Bits):
- 14 b
- Number of ADCs / DACs:
- 1 / 1
- Sigma Delta:
- No
- S/N Ratio, ADCs / DACs (db) Typ:
- -
- Dynamic Range, ADCs / DACs (db) Typ:
- -
- Voltage - Supply, Analog:
- 4.5V ~ 5.5V
- Voltage - Supply, Digital:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-PLCC (11.51x11.51)
TLC320AC01CFN FAQ
1.How can I place an order for TLC320AC01CFN through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC320AC01CFN 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 TLC320AC01CFN reliable?
The price and inventory of TLC320AC01CFN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC320AC01CFN is usually 5 days.
3.What payment methods are accepted for TLC320AC01CFN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC320AC01CFN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC320AC01CFN?
TLC320AC01CFN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC320AC01CFN 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 TLC320AC01CFN?
For technical support, including TLC320AC01CFN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC320AC01CFN requirements.
6.How does Aetrix verify that TLC320AC01CFN is sourced from the original manufacturer or authorized distributors?
All TLC320AC01CFN 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 TLC320AC01CFN meets industry standards.
7.What is the process for return or replacement of TLC320AC01CFN?
All TLC320AC01CFN units undergo pre-shipment inspection (PSI). If there is an issue with TLC320AC01CFN, 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 TLC320AC01CFN part is unused and in its original packaging.
Return procedure for TLC320AC01CFN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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