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Texas Instruments TLC320AD50CDWR
- Part No.:
- TLC320AD50CDWR
- Manufacturer:
- Texas Instruments
- Category:
- CODECS
- Package:
- 28-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
TLC320AD50CDWR.pdf
- Description:
- IC CODEC 16BIT SER 28SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,911
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Product details
Overview
TLC320AD50CDWR from Texas Instruments is a 16-bit sigma-delta audio codec IC integrating synchronous ADC and DAC paths, decimation/interpolation filters, on-chip PLL, and programmable gain amplifiers. It operates at sampling rates up to 22.05 kHz, delivers 89 dB SNR and 90 dB THD, and supports dual power supply (5 V analog / 3 V digital). It is used in V.34+ modem analog front-ends and business audio interface circuits.
For engineers reviewing the TLC320AD50CDWR datasheet, TLC320AD50CDWR pinout, TLC320AD50CDWR application, or TLC320AD50CDWR equivalent, key selection criteria include frame-sync timing control (FS/FSD), master/slave configuration via M/S pin, differential analog I/O architecture, serial interface protocol compatibility with DSPs, and hardware power-down capability.
Technical Context
The device implements oversampling sigma-delta conversion with a 256× oversampling ratio, using a decimation filter after the ADC and interpolation filter before the DAC. Its internal PLL generates precise sampling clocks from MCLK, supporting programmable division factors (N = 1–8) to set fs = MCLK/(128N) or MCLK/(512N).
It features dual serial communication modes: primary for signal data (16-bit or 15+1-bit 2's complement) and secondary for register access, with hardware (FC pin) or software-initiated requests. Frame synchronization supports up to three slave devices in master mode, with FSD output providing programmable delay (0–63 SCLK cycles) for timing alignment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit sigma-delta ADC/DAC with selectable 15+1-bit mode for reduced word length |
| SNR | 89 dB typical - defines usable dynamic range for voice-band signals |
| THD | 90 dB typical - ensures low harmonic distortion in audio reconstruction |
| Max Sampling Rate | 22.05 kHz - supports full V.34 modem bandwidth and wideband audio |
| Power Dissipation | 120 mW typical active; 7.5 mW in hardware power-down - enables low-power system design |
| Supply Voltages | AVDD = 5 V (PLL/analog); DVDD = 3 V or 5 V - allows mixed-voltage system integration |
| Analog Input/Output | Differential INP/INM and OUTP/OUTM - rejects common-mode noise in telecom environments |
Pinout & Package
Package: SOIC-28 (DW), surface-mount, 300-mil body width, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INP / INM | ADC differential analog input | Accepts band-limited audio signal; requires external RC antialias filter per datasheet Figure 2–15 |
| OUTP / OUTM | DAC differential analog output | Drives 600 Ω load; supports single-ended use of either output |
| DIN / DOUT | Serial data I/O | Synchronous 16-bit 2's complement transfer; edge-aligned to SCLK during FS low |
| FS / FSD | Frame sync I/O and delayed sync output | FS: master output/slave input; FSD: programmable-delay sync for slave timing alignment |
| M/S | Master/slave select | High = master (generates FS/SCLK); low = slave (requires external FS/SCLK) |
| PWRDWN | Hardware power-down control | Pull low to enter 7.5 mW standby; preserves register state for instant wake-up |
| RESET | Asynchronous reset | Pull low to initialize all registers to default values; required before first operation |
| ALTDATA | Secondary communication data monitor | Routes secondary data to DOUT when phone mode enabled - aids debug of register traffic |
Key Features
| Feature | Design Value |
|---|---|
| Programmable sampling rate | fs = MCLK/(128N) or MCLK/(512N), N = 1–8 - enables flexible clock tree design across multiple systems |
| Dual serial communication | Primary for audio data; secondary for register read/write - separates real-time signal path from control overhead |
| On-chip PLL | Generates stable fs from MCLK; bypassable for low-frequency operation (<7 kHz) - eliminates external clock synthesis |
| Loopback test modes | Digital loopback (register-controlled) and analog loopback (hardware switchable) - enables in-system functional validation |
| Monitor amplifier | MONOUT provides buffered copy of INP/INM with gain/mute control via Register 1 - simplifies signal integrity debugging |
| Hardware secondary request | FC pin triggers secondary communication without CPU intervention - reduces host processor load in real-time systems |
Applications
| V.34+ Modem Analog Front-End | Business Audio Interface |
|---|---|
Use Scenario: Full-duplex voice/data transmission over PSTN lines with echo cancellation and line equalization. IC Role / Device Role: Dual-channel sigma-delta codec handling simultaneous A/D and D/A conversion at 8–16 kHz sampling rates. Use Value: 89 dB SNR and 90 dB THD ensure clean voice fidelity; differential I/O rejects line-induced common-mode noise. |
Use Scenario: PC-based conferencing system with microphone input and speaker output requiring low-latency audio path. IC Role / Device Role: Audio interface between DSP and analog transducers, supporting programmable gain and sample rate. Use Value: Hardware power-down (7.5 mW) enables energy-efficient idle states; MONOUT simplifies input signal monitoring. |
| DSP-Based Telephony Gateway | Industrial Voice Recorder |
Use Scenario: Multi-channel VoIP gateway connecting analog FXS ports to TDM backplane or packet network. IC Role / Device Role: Master-mode codec synchronizing up to three slave codecs via FS/FSD for channel expansion. Use Value: Programmable FSD delay aligns frame timing across multiple devices; secondary communication configures all units via daisy chain. |
Use Scenario: Battery-powered field recorder capturing speech with extended runtime and minimal noise floor. IC Role / Device Role: Low-power audio acquisition subsystem with hardware-triggered recording and sleep/wake control. Use Value: 120 mW active power and 7.5 mW power-down enable >10-hour battery life; internal reference eliminates external Vref component. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar audio codec applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV320AIC10CP | 16-bit sigma-delta codec with integrated PGA, but no on-chip PLL; requires external clock source for fs generation | Lacks FSD timing control and multi-slave support; limited to single-device configurations | Choose when system already provides precise fs clock and does not require master/slave expansion |
| CS4272-CQZ | 24-bit stereo audio codec with higher resolution (114 dB SNR), I²S/PCM interface, and lower THD (–105 dB) | Designed for consumer audio; lacks FC pin, FSD output, and phone-mode secondary protocol | Choose for high-fidelity audio where V.34 modem timing constraints and legacy DSP interface are not required |
Compared with TLV320AIC10CP and CS4272-CQZ, the TLC320AD50CDWR uniquely combines V.34 modem timing compliance, hardware-configurable frame sync for multi-device chains, and dual-voltage operation - making it irreplaceable in legacy telecom DSP interfaces requiring precise FS/FSD coordination and low-power standby.
Availability
TLC320AD50CDWR is available at Aetrix Electronics and suitable for V.34+ modem designs, business audio interface circuits, and DSP-based telephony gateways requiring stable component supply and long-term industrial availability.
Supply support for TLC320AD50CDWR 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 solutions with broad industrial and communications portfolio coverage.
The TLC320AD50C series was designed specifically for cost-sensitive, high-reliability voice-band signal conversion in V.34+ modems and business audio systems requiring synchronous serial interfacing to DSPs.
FAQ
What is the maximum sampling rate supported by the TLC320AD50CDWR?
The TLC320AD50CDWR supports a maximum sampling rate of 22.05 kHz, achieved when MCLK = 8.192 MHz and N = 1 in PLL-enabled mode (fs = MCLK/(128N)). This rate satisfies full V.34 modem bandwidth requirements and enables wideband voice capture. Rates below 7 kHz require PLL bypass per Equation 2 in the datasheet.
How does the FSD pin function in master mode for the TLC320AD50CDWR?
In master mode, the FSD pin of the TLC320AD50CDWR outputs an active-low frame-sync signal delayed relative to FS by a programmable number of SCLK cycles (0–63), set via bits D0–D5 of Control Register 3. This delay aligns timing for up to three cascaded slave devices, ensuring synchronized data capture across the chain without external logic.
Can the TLC320AD50CDWR operate with separate analog and digital supplies?
Yes, the TLC320AD50CDWR requires separate analog and digital power domains: AVDD (5 V only) for analog/PLL circuitry and DVDD (3 V or 5 V) for digital logic. AVSS and DVSS must be isolated on PCB layout per datasheet Note 1. This separation minimizes digital noise coupling into sensitive analog conversion paths.
What is the purpose of the ALTDATA pin on the TLC320AD50CDWR?
The ALTDATA pin on the TLC320AD50CDWR routes secondary communication data to DOUT when phone mode is enabled via Control Register 2. It allows real-time monitoring of register read/write traffic without disrupting primary audio data flow - a critical debug aid during firmware development and system bring-up.
Does the TLC320AD50CDWR support both master and slave configurations?
Yes, the TLC320AD50CDWR supports configurable master/slave operation via the M/S pin: tied high for master (generates FS/SCLK), tied low for slave (accepts external FS/SCLK). In master mode, it can synchronize up to three slaves using FS/FSD; in slave mode, it responds only to its assigned time slot within the master's frame structure.
TLC320AD50CDWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 28-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- General Purpose
- Data Interface:
- Serial
- Resolution (Bits):
- 16 b
- Number of ADCs / DACs:
- 1 / 1
- Sigma Delta:
- Yes
- S/N Ratio, ADCs / DACs (db) Typ:
- 89 / 89
- Dynamic Range, ADCs / DACs (db) Typ:
- 88 / 88
- Voltage - Supply, Analog:
- 4.75V ~ 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-SOIC
TLC320AD50CDWR FAQ
1.How can I place an order for TLC320AD50CDWR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC320AD50CDWR 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 TLC320AD50CDWR reliable?
The price and inventory of TLC320AD50CDWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC320AD50CDWR is usually 5 days.
3.What payment methods are accepted for TLC320AD50CDWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC320AD50CDWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC320AD50CDWR?
TLC320AD50CDWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC320AD50CDWR 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 TLC320AD50CDWR?
For technical support, including TLC320AD50CDWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC320AD50CDWR requirements.
6.How does Aetrix verify that TLC320AD50CDWR is sourced from the original manufacturer or authorized distributors?
All TLC320AD50CDWR 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 TLC320AD50CDWR meets industry standards.
7.What is the process for return or replacement of TLC320AD50CDWR?
All TLC320AD50CDWR units undergo pre-shipment inspection (PSI). If there is an issue with TLC320AD50CDWR, 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 TLC320AD50CDWR part is unused and in its original packaging.
Return procedure for TLC320AD50CDWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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