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Analog Devices Inc. AD1984BJCPZ-RL
- Part No.:
- AD1984BJCPZ-RL
- Manufacturer:
- Analog Devices Inc.
- Category:
- CODECS
- Package:
- 48-VFQFN Exposed Pad, CSP
- Datasheet:
-
AD1984BJCPZ-RL.pdf
- Description:
- IC CODEC HD AUDIO 4CH 48-LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:6,199
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Product details
Overview
AD1984BJCPZ-RL from Analog Devices is a high-definition audio codec IC implementing the Intel HD Audio specification, featuring two 192 kHz stereo DAC/ADC pairs, dual S/PDIF outputs, a 2-channel digital microphone interface, and integrated analog mixer with impedance detection-designed for desktop and notebook PCs requiring Vista Premium–certified audio performance.
For engineers reviewing the AD1984BJCPZ-RL datasheet, AD1984BJCPZ-RL pinout, AD1984BJCPZ-RL application, or AD1984BJCPZ-RL equivalent, key selection considerations include simultaneous 2× stereo record/playback capability, 96+ dB DAC SNR, 3.3 V analog/1.7–1.9 V or 3.3 V digital supply flexibility, 48-lead LFCSP_VQ package compatibility, and HD Audio widget-level configuration support for jack sensing and power management.
Technical Context
The AD1984BJCPZ-RL implements a full HD Audio link interface (24 MHz BIT_CLK, SDATA_IN/OUT, SYNC, RESET) with native support for 8–192 kHz sample rates and 16/20/24-bit resolution across all converters. Its architecture includes independent stereo DAC0/DAC1 and ADC0/ADC1 paths, each with programmable gain, mute, and volume control in 1.5 dB steps.
Digital microphone support uses DM_CLK (1.5/2.0/3.0 MHz), DM_1/2, and DM_2 pins to interface with biphase or single-phase microphones; analog inputs feature MIC bias on Ports B/C/E with selectable 0 V / 1.65 V / 2.86 V / 3.0 V (3.3 V supply) or 3.7 V / 3.9 V (5 V supply) outputs, while headphone drivers deliver 2.83 Vp-p into 32 Ω loads with –80 dB THD+N.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| DAC/ADC Resolution | 24-bit-enables high-fidelity audio capture and playback with >144 dB theoretical dynamic range |
| DAC SNR / THD+N | 96 dB / –80 dB (32 Ω load)-meets Vista Premium Line-Out and Headphone requirements |
| ADC SNR / THD+N | 90 dB / –81 dB-supports high-quality microphone and line-in recording with low noise floor |
| Sample Rate Support | 8–192 kHz-covers legacy (8/11.025/16 kHz), standard (44.1/48 kHz), and high-res (88.2/96/176.4/192 kHz) formats |
| Digital Microphone Clock | 1.5 / 2.0 / 3.0 MHz-configurable clock rate balances power consumption and audio quality for digital mic arrays |
| HD Audio Link Voltage | 3.3 V signaling-compliant with Intel HD Audio specification for host controller interoperability |
| Analog Supply | 3.3 V ±5% AVDD-requires low-noise regulation to maintain 96 dB SNR performance |
| Digital Core Supply | 1.7–1.9 V or 3.3 V DVDD-flexible core voltage enables optimization of power vs. performance |
Pinout & Package
AD1984BJCPZ-RL is housed in a 48-lead RoHS-compliant LFCSP_VQ (Lead Frame Chip Scale Package, Very Thin Quad) measuring 7 mm × 7 mm × 0.85 mm, with exposed thermal pad for enhanced heat dissipation in PC motherboard applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SDATA_OUT (Pin 5) | HD Audio Link Output | Serial data stream from codec to host controller; clocked on both edges of BIT_CLK |
| DM_1/2 (Pin 2) | Digital Microphone Input | Accepts biphase (stereo) or single-phase (mono) digital mic data; supports multiplexed dual-mic operation |
| PORT-A_L/R (Pins 39,41) | Front Panel Headphone Output | HP-capable analog outputs with 0.5 Ω output impedance-drives 32 Ω headphones directly |
| MIC_BIAS-B (Pin 28) | Port B Microphone Bias | Switchable 0 V / 1.65 V / 2.86 V / 3.0 V output for electret condenser mics on front panel jacks |
| EAPD/GPIO_0 (Pin 47) | External Amplifier Power Down | Open-drain EAPD signal with GPIO fallback; controls external headphone amp enable/disable sequencing |
| S/PDIF_OUT-1 (Pin 48) | Digital Audio Output | PCM/AC3-formatted S/PDIF stream at 44.1–192 kHz; connects to optical/RCA jack or external receiver |
Key Features
| Feature | Design Value |
|---|---|
| Microsoft Vista Premium Logo Certification | Validated compliance with Microsoft's audio quality, driver, and power management requirements for Windows Vista desktops |
| Simultaneous Dual Stereo Record/Playback | Enables concurrent voice chat + music playback or multi-track recording without CPU resource contention |
| Impedance and Presence Detection | Automatically detects jack insertion/removal and load type (headphone vs. line) on all 6 analog ports |
| Security Feature Against Unauthorized Recording | Hardware-enforced blocking of digital audio loopback paths prevents surreptitious capture of protected content |
| Internal 32-bit Arithmetic Engine | Reduces quantization error during mixing and volume control-preserves dynamic range in complex audio routing |
| Three Independent MIC_BIAS Pins (B/C/E) | Enables simultaneous biasing of front, rear, and dock/mic array inputs with independent voltage selection |
Applications
| Desktop PC Audio Subsystem | Notebook PC Integrated Audio |
|---|---|
Use Scenario: High-fidelity audio output and multi-source input on ATX motherboards with front/rear panel jacks, optical S/PDIF, and HDMI audio routing. IC Role / Device Role / Timing Role: Primary HD Audio codec interfacing with Intel PCH via 24 MHz HD Audio link; manages all analog I/O, jack sensing, and S/PDIF generation. Use Value: Delivers 96 dB DAC SNR and Vista Premium certification-enabling OEM branding and premium audio marketing claims. | Use Scenario: Space-constrained laptop designs requiring integrated headphone drive, dual mic support (front + internal), and HDMI audio handoff. IC Role / Device Role / Timing Role: System-on-module audio hub handling headphone/line-out, stereo mic array, mono speaker, and S/PDIF-to-HDMI encoder interface. Use Value: Eliminates need for discrete mic bias generators and analog mixers-reducing BOM count and PCB area by >30%. |
| Notebook Docking Station Interface | Multi-Stream Audio Workstation |
Use Scenario: Docking cradle providing expanded audio I/O (line-in/out, mic-in, auxiliary) while maintaining seamless hot-plug detection. IC Role / Device Role / Timing Role: Codec extension node managing dock-specific ports (Port D/E) with independent jack sense and bias control per connector. Use Value: Enables true plug-and-play audio reconfiguration-no OS-level driver reload required when docking/undocking. | Use Scenario: Professional audio editing systems requiring simultaneous monitoring of multiple stereo sources (e.g., DAW playback + VOIP + system alerts). IC Role / Device Role / Timing Role: Multi-path audio router with independent DAC/ADC pairs, analog mixer, and digital PCBeep-supporting 4+ concurrent streams. Use Value: Achieves <1 ms inter-stream latency via hardware-mixed paths-critical for real-time monitoring and low-latency recording. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar audio codec applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Realtek ALC889 | Integrated PCI Express interface; lower 94 dB DAC SNR; no digital microphone interface | Targeted at cost-sensitive mainstream desktops; lacks Vista Premium certification | Choose for PCIe-native integration where HD Audio link complexity must be avoided |
| Cirrus Logic CS4207 | Single 192 kHz DAC/ADC pair; 44-pin QFN; no S/PDIF outputs; supports only 48/96 kHz sample rates | Designed for embedded industrial audio-not validated for Windows HD Audio stack | Choose for space-constrained non-PC applications requiring robust analog I/O but no multi-stream or HDMI audio routing |
Compared with ALC889 and CS4207, AD1984BJCPZ-RL uniquely combines Vista Premium certification, dual 192 kHz stereo converters, digital mic support, and dual S/PDIF-making it the only option for high-end desktops and notebooks requiring simultaneous multi-format audio I/O with guaranteed OS driver compatibility.
Availability
AD1984BJCPZ-RL is available at Aetrix Electronics and suitable for desktop motherboards, notebook platforms, docking stations, and professional audio workstations requiring stable component supply, long-term lifecycle support, and HD Audio specification compliance.
Supply support for AD1984BJCPZ-RL 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.
The AD1984B product line was engineered specifically for Intel HD Audio–compliant PC audio subsystems, emphasizing low-noise conversion, jack-aware power management, and Vista Premium–certified fidelity in space-constrained LFCSP packages.
FAQ
What is the maximum supported sample rate for the AD1984BJCPZ-RL DACs and ADCs?
The AD1984BJCPZ-RL supports up to 192 kHz for both DAC and ADC conversion paths, with verified performance across the full range of 8 kHz, 11.025 kHz, 16 kHz, 22.05 kHz, 32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, and 192 kHz sample rates. This enables high-resolution audio playback and recording in professional and consumer applications.
Does the AD1984BJCPZ-RL support digital microphones, and if so, how many channels?
Yes, the AD1984BJCPZ-RL supports two 192 kHz digital microphone channels via its dedicated DM_CLK, DM_1/2, and DM_2 pins. It accommodates both uniplex (one mic per data pin) and multiplex (two mics sharing DM_1/2) configurations, with selectable bit clock rates of 1.5 MHz, 2.0 MHz, or 3.0 MHz to match microphone specifications.
What are the power supply requirements for the AD1984BJCPZ-RL?
The AD1984BJCPZ-RL requires three distinct supplies: 3.3 V ±5% AVDD for analog circuitry, 1.7–1.9 V or 3.3 V ±10% DVDD for digital core, and 3.3 V ±10% DVIO for HD Audio link I/O. The DVCORE pin (Pin 1) must be filtered appropriately depending on whether DVDD is 3.3 V or 1.7–1.9 V, per the datasheet layout guidelines.
How does the AD1984BJCPZ-RL handle jack detection and microphone biasing?
The AD1984BJCPZ-RL provides impedance and presence detection on all six analog ports (A–F) using dedicated SENSE_A/SRC_B and SENSE_B/SRC_A pins. It offers three independent, switchable MIC_BIAS outputs (Pins 28, 29, 31) supporting 0 V, 1.65 V, 2.86 V, or 3.0 V (with 3.3 V MIC_BIAS_IN) to power electret microphones on front, rear, and dock interfaces simultaneously.
Is the AD1984BJCPZ-RL pin-compatible with earlier AD1984 variants such as AD1984A?
No, the AD1984BJCPZ-RL is not pin-compatible with AD1984A. While both use the same 48-lead LFCSP_VQ package, the AD1984B revision introduces functional changes-including updated HD Audio widget mapping, revised GPIO/MIC_BIAS-E pin sharing (Pin 31), and modified power-down behavior-that require board-level validation and firmware updates for migration.
AD1984BJCPZ-RL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- SoundMAX®
- Package/Case:
- 48-VFQFN Exposed Pad, CSP
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Audio Codec, HD
- Data Interface:
- Serial
- Resolution (Bits):
- 24 b
- Number of ADCs / DACs:
- 4 / 4
- Sigma Delta:
- No
- S/N Ratio, ADCs / DACs (db) Typ:
- -
- Dynamic Range, ADCs / DACs (db) Typ:
- -
- Voltage - Supply, Analog:
- 3.13V ~ 3.46V
- Voltage - Supply, Digital:
- 2.97V ~ 3.63V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-LFCSP-VQ (7x7)
AD1984BJCPZ-RL FAQ
1.How can I place an order for AD1984BJCPZ-RL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD1984BJCPZ-RL 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 AD1984BJCPZ-RL reliable?
The price and inventory of AD1984BJCPZ-RL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD1984BJCPZ-RL is usually 5 days.
3.What payment methods are accepted for AD1984BJCPZ-RL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD1984BJCPZ-RL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD1984BJCPZ-RL?
AD1984BJCPZ-RL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD1984BJCPZ-RL 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 AD1984BJCPZ-RL?
For technical support, including AD1984BJCPZ-RL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD1984BJCPZ-RL requirements.
6.How does Aetrix verify that AD1984BJCPZ-RL is sourced from the original manufacturer or authorized distributors?
All AD1984BJCPZ-RL 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 AD1984BJCPZ-RL meets industry standards.
7.What is the process for return or replacement of AD1984BJCPZ-RL?
All AD1984BJCPZ-RL units undergo pre-shipment inspection (PSI). If there is an issue with AD1984BJCPZ-RL, 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 AD1984BJCPZ-RL part is unused and in its original packaging.
Return procedure for AD1984BJCPZ-RL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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