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Microchip Technology AT83SND2CMP3A1-7FTUL
- Part No.:
- AT83SND2CMP3A1-7FTUL
- Manufacturer:
- Microchip Technology
- Category:
- Encoders, Decoders, Converters
- Package:
- 100-TFBGA
- Datasheet:
-
AT83SND2CMP3A1-7FTUL.pdf
- Description:
- IC MP3 DECODER SGL CHIP 100VFGBA
- Quantity:
- Payment:
- Shipping:
Inventory:4,756
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Product details
Overview
AT83SND2CMP3A1-7FTUL from Microchip Technology is a single-chip MP3 decoder IC integrating MPEG I/II Layer 3 decoding, 20-bit stereo DAC (93 dB SNR), mono 440 mW Class AB power amplifier, USB 1.1 controller, MMC/SD interface, UART, and on-chip PLL - all in a 100-pin CTBGA package for portable audio playback systems.
For engineers reviewing the AT83SND2CMP3A1-7FTUL datasheet, AT83SND2CMP3A1-7FTUL pinout, AT83SND2CMP3A1-7FTUL application, or AT83SND2CMP3A1-7FTUL equivalent, key selection considerations include real-time MP3 frame decoding at 48–16 kHz sampling rates, independent left/right digital volume control (31-step), 3-band equalization (bass/medium/treble), ancillary data extraction, and dual audio source routing (MP3 decoder or MCU).
Technical Context
The AT83SND2CMP3A1-7FTUL implements a hardwired MPEG I/II Layer 3 decoder core with header parsing, Huffman decoding, IMDCT, and sub-band synthesis - requiring no external firmware. Its audio interface supports I2S/PCM output with programmable justification (MSB/LSB/I2S), bit depth (16/32-bit), and sample rate scaling via PLL-derived clocks (256×/384× Fs).
Power management includes Idle and Power-down modes with wake-up via UART, USB, or keypad interrupt; supply rails are segregated (AUDVDD/AUDVSS, PVDD/PVSS, UVDD/UVSS) to minimize noise coupling between digital, PLL, USB, and analog audio domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| MPEG Support | MPEG I/II Layer 3 only - no AAC, WMA, or Ogg Vorbis; real-time decoding at 48/44.1/32/24/22.05/16 kHz sampling rates. |
| DAC Resolution & SNR | 20-bit stereo DAC with 93 dB SNR - enables CD-quality analog output without external post-filtering. |
| Headphone Drive | 32 Ω / 20 mW per channel - sufficient for direct drive of standard earbuds without external amplification. |
| Power Amplifier | 440 mW into 8 Ω - Class AB output stage powered by separate AUDVBAT rail (3.2–5.5 V) for higher headroom. |
| USB Interface | Full-speed USB 1.1 device controller - supports mass storage class for FAT12/16/32 file system access from Windows/Linux/macOS hosts. |
| Operating Voltage | 2.7–3.0 V ±10% digital core supply - optimized for single-cell Li-ion/Ni-MH battery operation with 25 mA typical current draw. |
| Temperature Range | −40°C to +85°C - qualified for industrial and automotive cabin environments. |
| Package | 100-pin CTBGA (7 mm × 7 mm, 0.5 mm pitch) - requires controlled-impedance PCB layout for audio signal integrity. |
Pinout & Package
AT83SND2CMP3A1-7FTUL is housed in a 100-pin CTBGA package with 0.5 mm pitch and 7 mm × 7 mm body size. Pin functions are defined across six dedicated I/O ports (P0–P4), clock inputs (X1/X2), audio interfaces (DCLK/DOUT/DSEL/SCLK, HSL/HSR, LINEL/LINER, MONOP/MONON), USB (D+/D−), MMC/SD (MCLK/MCMD/MDAT), and segregated power domains (AUDVDD/AUDVSS, PVDD/PVSS, UVDD/UVSS, HSVDD/HSVSS, AUDVBAT).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| HSL / HSR | Stereo headset driver outputs | Direct-drive 32 Ω loads; require external DC-blocking capacitors for AC-coupled headphones. |
| DCLK / DOUT / DSEL / SCLK | I2S/PCM audio interface signals | Supports master-mode output to external DACs; timing synchronized to PLL-derived clocks (256×/384× Fs). |
| PVDD / PVSS | PLL power supply pair | Isolated 3 V rail minimizes jitter coupling from digital switching noise into audio clock generation. |
| UVDD / UVSS | USB transceiver power pair | Dedicated 3 V supply ensures stable full-speed USB signaling compliance without digital core interference. |
| AUDVBAT | Audio power amplifier supply | Accepts 3.2–5.5 V - enables higher output power than core logic rail; decoupling critical for low THD+N. |
Key Features
| Feature | Design Value |
|---|---|
| Hardware MP3 decoder core | Zero-CPU-load real-time decoding - eliminates need for external microcontroller firmware development or licensing. |
| Independent L/R digital volume control | 31-step attenuation (−33 dB to 0 dB) with mute - enables precise stereo balance adjustment without analog potentiometers. |
| 3-band parametric equalizer | Bass (≤750 Hz), medium (750–3300 Hz), treble (≥3300 Hz); 31-step gain (−∞ to +1.5 dB) per band - supports user-tailored sound profiles. |
| FAT file system engine | On-chip FAT12/16/32 parser - offloads host MCU from file navigation; supports long filenames and subdirectories. |
| Dual audio source routing | Selectable input from MP3 decoder or C51 core via SRC bit - enables mixed playback (e.g., voice prompts over music). |
| ANCillary data extraction | Real-time parsing of MP3 frame ancillary bits into 7-byte buffer - supports ID3 tag reading or custom metadata protocols. |
Applications
| MP3 Player | Mobile Phone Audio |
|---|---|
Use Scenario: Standalone portable music player with SD card storage and headphone output. IC Role / Device Role / Timing Role: Primary MP3 decode, DAC, and headset driver - replaces discrete decoder + DAC + amp solution. Use Value: Reduces BOM count by >12 components; enables <100 ms startup from power-on to first audio sample. | Use Scenario: Embedded MP3 playback in feature phone UI (ringtone, notification, media player). IC Role / Device Role / Timing Role: Offloads audio processing from baseband processor; provides hardware-accelerated decoding and analog output. Use Value: Lowers host CPU utilization by ~45%; supports simultaneous voice call and background music via UART command protocol. |
| Car Audio System | Industrial Background Music |
Use Scenario: Aftermarket car stereo add-on supporting USB stick and SD card playback. IC Role / Device Role / Timing Role: USB mass storage device + SD interface + mono PA for speaker output - operates as self-contained audio subsystem. Use Value: Eliminates need for external USB PHY or SD controller; 440 mW 8 Ω output drives OEM speaker lines directly. | Use Scenario: Factory-floor audio announcement system with scheduled playlist playback from NAND flash. IC Role / Device Role / Timing Role: File system manager + MP3 decoder + line-level output - interfaces to external PA via LINEL/LINER. Use Value: −40°C to +85°C rating ensures reliability in unconditioned industrial enclosures; UART remote control enables centralized playlist updates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar MP3 decoder applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| VLSI VS1003B | Separate SPI-controlled decoder IC; requires external DAC and power amp; no integrated USB or SD controller. | Higher flexibility in audio path design but increases BOM and layout complexity. | Choose VS1003B when needing customizable audio signal chain or multi-format support (e.g., WAV, MIDI). |
| STMicroelectronics STA013 | Legacy 32-bit RISC-based MP3 decoder SoC; lacks USB 1.1 controller and SD interface; lower SNR (85 dB). | Requires external USB bridge and SD host controller; limited to older FAT16-only file systems. | Choose STA013 only for legacy design refresh where pin compatibility with prior ST platforms is required. |
Compared with VS1003B and STA013, AT83SND2CMP3A1-7FTUL delivers higher integration (USB+SD+DAC+PA in one chip), superior audio fidelity (93 dB SNR vs. 85 dB), and broader sampling rate support (16–48 kHz), making it optimal for cost-sensitive, space-constrained portable audio designs.
Availability
AT83SND2CMP3A1-7FTUL is available at Aetrix Electronics and suitable for MP3 players, mobile phone audio subsystems, and car multimedia systems requiring stable component supply, long-term lifecycle assurance, and industrial temperature operation.
Supply support for AT83SND2CMP3A1-7FTUL 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
Microchip Technology is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, and connectivity solutions for embedded applications.
The AT83SND2CMP3A1-7FTUL belongs to Microchip's legacy audio SoC product line, designed specifically for low-cost, high-integration portable MP3 playback systems with minimal external component requirements.
FAQ
What audio formats does the AT83SND2CMP3A1-7FTUL support?
The AT83SND2CMP3A1-7FTUL supports only MPEG I/II Layer 3 (MP3) decoding - no AAC, WMA, FLAC, or other codecs. It handles all standard MP3 sampling frequencies (48, 44.1, 32, 24, 22.05, and 16 kHz) and extracts ancillary data from MP3 frames. The AT83SND2CMP3A1-7FTUL does not perform software-based decoding; its hardwired core ensures deterministic real-time performance without firmware dependencies.
Does the AT83SND2CMP3A1-7FTUL include an integrated USB PHY?
Yes, the AT83SND2CMP3A1-7FTUL integrates a full-speed USB 1.1 device controller with on-die transceivers for D+ and D−. It requires only an external 1.5 kΩ pull-up resistor on D+ for enumeration and complies with USB specification 1.1 without external PHY components. The AT83SND2CMP3A1-7FTUL implements USB mass storage class natively, enabling direct FAT file access from host PCs.
Can the AT83SND2CMP3A1-7FTUL drive 8 Ω speakers directly?
Yes - the AT83SND2CMP3A1-7FTUL includes a mono Class AB power amplifier delivering 440 mW into 8 Ω, powered by a dedicated AUDVBAT rail (3.2–5.5 V). This allows direct connection to small speakers without external amplification. Stereo headphone output is provided separately via HSL/HSR drivers rated for 32 Ω/20 mW. The AT83SND2CMP3A1-7FTUL does not support bridged-T or BTL speaker configurations.
How is file system management handled in the AT83SND2CMP3A1-7FTUL?
The AT83SND2CMP3A1-7FTUL contains an on-chip FAT12/16/32 file system engine that manages directory navigation, cluster allocation, and long filename parsing independently. Host controllers (e.g., MCU or PC via USB) do not need to implement FAT logic - the AT83SND2CMP3A1-7FTUL exposes files as logical units via its command protocol or USB mass storage interface. This reduces host firmware complexity and ensures consistent file handling across platforms.
What are the power management modes supported by the AT83SND2CMP3A1-7FTUL?
The AT83SND2CMP3A1-7FTUL supports Idle mode (CPU halted, peripherals active) and Power-down mode (all clocks stopped, RAM retention). Wake-up sources include UART RX activity, USB resume, keypad interrupt (KIN0), or external INT0/INT1. In Power-down mode, typical current drops below 10 µA. The AT83SND2CMP3A1-7FTUL also features automatic power-on reset and configurable brown-out detection for robust operation across battery discharge cycles.
AT83SND2CMP3A1-7FTUL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 100-TFBGA
- Packaging:
- Tray
- Product Status:
- Obsolete
- Type:
- Decoder
- Applications:
- MP3 Players, Portable Media Players
- Voltage - Supply, Analog:
- -
- Voltage - Supply, Digital:
- 2.4V ~ 3.3V
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 100-CTBGA (9x9)
AT83SND2CMP3A1-7FTUL FAQ
1.How can I place an order for AT83SND2CMP3A1-7FTUL through Aetrix?
Please submit a Request for Quotation (RFQ) for AT83SND2CMP3A1-7FTUL 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 AT83SND2CMP3A1-7FTUL reliable?
The price and inventory of AT83SND2CMP3A1-7FTUL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT83SND2CMP3A1-7FTUL is usually 5 days.
3.What payment methods are accepted for AT83SND2CMP3A1-7FTUL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT83SND2CMP3A1-7FTUL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT83SND2CMP3A1-7FTUL?
AT83SND2CMP3A1-7FTUL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT83SND2CMP3A1-7FTUL 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 AT83SND2CMP3A1-7FTUL?
For technical support, including AT83SND2CMP3A1-7FTUL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT83SND2CMP3A1-7FTUL requirements.
6.How does Aetrix verify that AT83SND2CMP3A1-7FTUL is sourced from the original manufacturer or authorized distributors?
All AT83SND2CMP3A1-7FTUL 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 AT83SND2CMP3A1-7FTUL meets industry standards.
7.What is the process for return or replacement of AT83SND2CMP3A1-7FTUL?
All AT83SND2CMP3A1-7FTUL units undergo pre-shipment inspection (PSI). If there is an issue with AT83SND2CMP3A1-7FTUL, 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 AT83SND2CMP3A1-7FTUL part is unused and in its original packaging.
Return procedure for AT83SND2CMP3A1-7FTUL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT83SND2CMP3A1-7FTUL Tags
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MCP2120T-I/SL
Microchip Technology
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LICAL-ENC-MS001
TE Connectivity Linx
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TW9990AT-NA1-GR
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LICAL-DEC-MS001-T
TE Connectivity Linx
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Analog Devices Inc.
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Analog Devices Inc.
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ADV7393BCPZ
Analog Devices Inc.
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