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Analog Devices Inc. ADSP-BF522KBCZ-4C2
- Part No.:
- ADSP-BF522KBCZ-4C2
- Manufacturer:
- Analog Devices Inc.
- Category:
- DSP (Digital Signal Processors)
- Package:
- 289-LFBGA, CSPBGA
- Datasheet:
-
ADSP-BF522KBCZ-4C2.pdf
- Description:
- IC DSP CTRLR 400MHZ 289CSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,305
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Product details
Overview
ADSP-BF522KBCZ-4C2 from Analog Devices is a Blackfin embedded processor with integrated stereo audio codec, operating at 400 MHz core frequency, featuring 24-bit stereo ADC/DAC (90 dB SNR ADC, 100 dB SNR DAC), and 132 KB on-chip memory in a 289-ball CSP_BGA package. It targets portable digital audio applications requiring low-power, high-fidelity analog front-end integration with programmable gain amplifiers and headphone drivers.
For engineers reviewing the ADSP-BF522KBCZ-4C2 datasheet, ADSP-BF522KBCZ-4C2 pinout, ADSP-BF522KBCZ-4C2 application, or ADSP-BF522KBCZ-4C2 equivalent, this page delivers verified specifications, validated codec interface timing, confirmed ball assignment for 289-ball CSP_BGA, and real-world audio system integration guidance - including USB/normal mode sampling rate mapping, I²S/PCM protocol support, and 1.8 V–3.6 V dual-domain supply operation.
Technical Context
The ADSP-BF522KBCZ-4C2 integrates a Blackfin core with a dedicated, self-contained audio codec subsystem featuring independent Σ-Δ ADC and DAC paths, programmable oversampling (256×fS/384×fS normal mode; 250×fS/272×fS USB mode), and configurable digital filters optimized per sampling rate (8–96 kHz). It supports master/slave digital audio interface modes with I²S, left/right-justified, and frame-sync protocols.
Its analog interface includes stereo line inputs (±34.5 dB adjustable gain), monaural microphone input with dual-stage programmable gain (0/20/40 dB), VMID-biased single-ended architecture, and efficient 16 Ω/32 Ω headphone drivers delivering 1.0 Vrms output. The codec operates from separate 1.8 V–3.6 V analog (AVDD) and digital (DVDD) supplies, enabling ultra-low power operation (7 mW stereo playback at 1.8 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Frequency | 400 MHz - fixed operational speed for deterministic real-time audio processing and control loop execution. |
| ADC Resolution & SNR | 24-bit, 90 dB (A-weighted) - enables high dynamic range capture of line/mic signals without clipping at 1.0 Vrms full-scale. |
| DAC Resolution & SNR | 24-bit, 100 dB (A-weighted) - supports studio-grade playback fidelity with minimal quantization noise. |
| Sampling Rates | 8–96 kHz (normal/USB modes) - covers voice, telephony, CD, DVD, and high-res audio use cases with precise MCLK-derived clocking. |
| Package | 289-ball CSP_BGA (12 mm × 12 mm) - compact footprint suitable for space-constrained portable designs with thermal performance validated for 1.8 V operation. |
| Power Consumption | 7 mW stereo playback (1.8 V) - enables battery-powered devices to achieve >20-hour runtime with efficient voltage scaling. |
| Digital Audio Interface | I²S, left/right-justified, frame-sync (PCM) - ensures interoperability with common audio SoCs, FPGAs, and DSPs without protocol translation logic. |
Pinout & Package
ADSP-BF522KBCZ-4C2 uses a 289-ball CSP_BGA package (12 mm × 12 mm, 0.5 mm pitch) with ball grid arranged in 17 × 17 array. The codec-specific pins are assigned to dedicated analog and digital audio functions, with internal pull-downs on CODEC_BCLK and DACLRC/ADCLRC for robust slave-mode startup.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CODEC_BCLK | Digital audio bit clock I/O | Bi-directional clock signal synchronized to CODEC_MCLK; internal pull-down ensures defined state during reset and prevents spurious data latching. |
| ADCLRC / DACLRC | ADC/DAC left-right frame sync I/O | Configurable as input or output; defines channel boundary timing for time-multiplexed stereo data streams in all supported protocols. |
| ADCDAT | ADC digital audio data output | Serial output carrying oversampled, filtered 24-bit stereo data from ADC path; requires synchronous CODEC_BCLK for valid sampling. |
| DACDAT | DAC digital audio data input | Serial input accepting 16–32-bit stereo data for playback; supports MSB-first format across all interface modes (I²S, left/right-justified, PCM). |
| CODEC_CLKOUT | Codec master clock output | Drives external circuitry with CODEC_MCLK or divided-by-2 version; enables system-level clock distribution without additional oscillators. |
| LLINEIN / RLINEIN | Stereo line input analog terminals | Single-ended, VMID-biased inputs supporting ±34.5 dB programmable PGA gain; direct bypass path to outputs avoids ADC/DAC conversion latency. |
| MICIN | Monaural microphone input | High-impedance, low-capacitance node with dual-stage gain (0/20/40 dB); supports external REXT for fine-tuned first-stage attenuation down to 0 dB. |
| LHPOUT / RHPOUT | Stereo headphone driver outputs | Capable of driving 16 Ω or 32 Ω loads at 1.0 Vrms; volume controlled independently per channel (0–63 steps) with mute via LHPVOL/RHPVOL register bits. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated stereo audio codec | Eliminates need for discrete codec IC, reducing BOM count, PCB area, and interconnect complexity in portable audio systems. |
| Programmable oversampling rates | 256×fS/384×fS (normal) and 250×fS/272×fS (USB) enable precise clock derivation from standard crystals (12/24 MHz) while maintaining jitter tolerance <50 ps. |
| Dual-domain power supply | Independent 1.8 V–3.6 V analog (AVDD) and digital (DVDD) rails allow optimization of noise isolation and power efficiency without shared supply coupling. |
| Direct analog bypass & sidetone paths | Enables zero-latency monitoring (sidetone) and analog pass-through (bypass) without digital conversion, critical for voice communication and real-time feedback loops. |
| Software-configurable digital filters | ADC/DAC filters auto-adapt to selected sampling rate; high-pass filter removes DC offset, de-emphasis compensates for pre-emphasized sources. |
Applications
| Portable Media Players | Voice-Controlled IoT Devices |
|---|---|
Use Scenario: High-fidelity music playback and recording in handheld devices with limited board space and battery capacity. IC Role / Device Role / Timing Role: Single-chip audio subsystem handling ADC capture, DSP-based effects, DAC playback, and headphone drive - all synchronized to CODEC_MCLK. Use Value: 100 dB DAC SNR and 7 mW playback power enable CD-quality audio with >20-hour battery life using 1.8 V supply scaling. |
Use Scenario: Always-on voice wake-word detection and local speech processing in smart speakers and home assistants. IC Role / Device Role / Timing Role: Low-latency microphone input path with programmable PGA gain and sidetone feedback, feeding Blackfin core for real-time ASR preprocessing. Use Value: 90 dB ADC SNR and 0–40 dB mic gain range ensure reliable far-field voice capture even in noisy environments without external amplifiers. |
| USB Audio Class 1.0 Adapters | Industrial Voice Logging Terminals |
Use Scenario: Plug-and-play USB audio interface for PCs and laptops supporting 48 kHz/16-bit streaming with zero driver installation. IC Role / Device Role / Timing Role: USB mode operation with 12 MHz MCLK and 48 kHz DACLRC/ADCLRC generation; CODEC_BCLK = CODEC_MCLK for guaranteed synchronization. Use Value: Native USB audio compliance achieved via 250×fS oversampling and precise 48 kHz timing - no external PLL or clock generator required. |
Use Scenario: Ruggedized field recorders capturing maintenance technician voice notes in industrial settings with wide temperature and EMI variation. IC Role / Device Role / Timing Role: Robust analog front-end with VMID biasing, internal microphone bias (MICBIAS), and 1.8 V–3.6 V supply tolerance for operation across –40°C to +85°C. Use Value: 14 mW record+playback power and 132 KB on-chip memory enable continuous 8 kHz mono logging for >72 hours on a single Li-ion cell. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar embedded audio processor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADSP-BF523KBCZ-4C2 | Includes on-chip programmable voltage regulator; same codec, core, and package. | Preferred when system lacks dedicated 1.0 V/1.2 V core regulator and requires single-supply simplification. | Select ADSP-BF523KBCZ-4C2 only if voltage regulation integration reduces bill-of-materials cost and layout complexity. |
| ADSP-BF527KBCZ-4C2 | Same codec and core, but adds EMAC peripheral and enhanced security features (Lockbox Secure Technology). | Suitable for network-connected audio endpoints requiring Ethernet transport or secure firmware updates. | Choose ADSP-BF527KBCZ-4C2 when Ethernet connectivity or cryptographic key storage is mandatory - not for standalone audio-only designs. |
Compared with ADSP-BF522KBCZ-4C2, the ADSP-BF523KBCZ-4C2 adds integrated voltage regulation for simplified power design, while the ADSP-BF527KBCZ-4C2 extends functionality with EMAC and Lockbox security - neither offers pin-to-pin compatibility nor identical feature set, making ADSP-BF522KBCZ-4C2 optimal for cost-sensitive, self-contained audio processing where those extras are unnecessary.
Availability
ADSP-BF522KBCZ-4C2 is available at Aetrix Electronics and suitable for portable media players, voice-controlled IoT devices, USB audio adapters, and industrial voice logging terminals requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for ADSP-BF522KBCZ-4C2 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
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with over 50 years of innovation in precision signal chain solutions.
The ADSP-BF52x family was designed specifically for embedded audio and multimedia applications demanding real-time processing, low power, and integrated analog front-ends - with the ADSP-BF522KBCZ-4C2 representing the base variant optimized for cost and power efficiency without voltage regulation or Ethernet.
FAQ
What is the maximum sampling rate supported by the ADSP-BF522KBCZ-4C2 codec?
The ADSP-BF522KBCZ-4C2 supports up to 96 kHz sampling rate in both normal and USB modes. In normal mode, this requires a 12.288 MHz or 18.432 MHz CODEC_MCLK with CLKDIV2 = 0; in USB mode, a 12.000 MHz MCLK suffices. The DAC and ADC paths operate synchronously at this rate, with oversampling ratios (256×fS or 250×fS) ensuring adequate noise shaping and filter roll-off.
Does the ADSP-BF522KBCZ-4C2 include an on-chip voltage regulator?
No, the ADSP-BF522KBCZ-4C2 does not include an on-chip voltage regulator. That feature is exclusive to the ADSP-BF523/ADSP-BF525/ADSP-BF527 variants per the official ADSP-BF52x documentation. The ADSP-BF522KBCZ-4C2 requires external 1.8 V–3.6 V supplies for AVDD, DVDD, and HPVDD domains, with strict sequencing and decoupling specified in the datasheet.
Can the ADSP-BF522KBCZ-4C2 operate in I²S master mode?
Yes, the ADSP-BF522KBCZ-4C2 codec can operate in I²S master mode. When configured as master, it drives CODEC_BCLK and DACLRC/ADCLRC from its internal clock generator, deriving them from CODEC_MCLK. The FORMAT bits (Register R7, D1:D0 = 01) select I²S mode, and the USB bit (Register R8, D0) and SR bits (D2:D5) determine the exact sampling rate and oversampling ratio.
What is the full-scale input voltage for the ADSP-BF522KBCZ-4C2 ADC?
The full-scale input voltage for the ADSP-BF522KBCZ-4C2 ADC is 1.0 Vrms when AVDD = 3.3 V. This applies to both line inputs (LLINEIN/RLINEIN) and microphone input (MICIN). Exceeding this level causes audible distortion due to ADC overloading; gain must be configured - via LINVOL/RINVOL or MICBOOST registers - to match expected signal amplitude and maximize SNR.
How is the microphone input biased on the ADSP-BF522KBCZ-4C2?
The ADSP-BF522KBCZ-4C2 provides internal MICBIAS, a VMID-referenced bias voltage generated by a resistor divider between AVDD and AGND. This eliminates the need for external bias circuitry. The MICIN pin is high-impedance and low-capacitance, supporting direct connection of electret microphones. Bias level is fixed and not software-adjustable.
ADSP-BF522KBCZ-4C2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- Blackfin®
- Package/Case:
- 289-LFBGA, CSPBGA
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Fixed Point
- Interface:
- DMA, I2C, PPI, SPI, SPORT, UART
- Clock Rate:
- 400MHz
- Non-Volatile Memory:
- ROM (32kB)
- On-Chip RAM:
- 132kB
- Voltage - I/O:
- 1.8V, 2.5V, 3.3V
- Voltage - Core:
- 1.30V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 289-CSPBGA (12x12)
ADSP-BF522KBCZ-4C2 FAQ
1.How can I place an order for ADSP-BF522KBCZ-4C2 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADSP-BF522KBCZ-4C2 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 ADSP-BF522KBCZ-4C2 reliable?
The price and inventory of ADSP-BF522KBCZ-4C2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADSP-BF522KBCZ-4C2 is usually 5 days.
3.What payment methods are accepted for ADSP-BF522KBCZ-4C2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADSP-BF522KBCZ-4C2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADSP-BF522KBCZ-4C2?
ADSP-BF522KBCZ-4C2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADSP-BF522KBCZ-4C2 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 ADSP-BF522KBCZ-4C2?
For technical support, including ADSP-BF522KBCZ-4C2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADSP-BF522KBCZ-4C2 requirements.
6.How does Aetrix verify that ADSP-BF522KBCZ-4C2 is sourced from the original manufacturer or authorized distributors?
All ADSP-BF522KBCZ-4C2 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 ADSP-BF522KBCZ-4C2 meets industry standards.
7.What is the process for return or replacement of ADSP-BF522KBCZ-4C2?
All ADSP-BF522KBCZ-4C2 units undergo pre-shipment inspection (PSI). If there is an issue with ADSP-BF522KBCZ-4C2, 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 ADSP-BF522KBCZ-4C2 part is unused and in its original packaging.
Return procedure for ADSP-BF522KBCZ-4C2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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