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Analog Devices Inc. AD1986AJCPZ
- Part No.:
- AD1986AJCPZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- CODECS
- Package:
- 48-VFQFN Exposed Pad, CSP
- Datasheet:
-
AD1986AJCPZ.pdf
- Description:
- IC CODEC HD AUDIO AC'97 48LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:5,403
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Product details
Overview
AD1986AJCPZ from Analog Devices is a dual-interface audio codec IC supporting both AC '97 and HD Audio protocols, integrating six 24-bit Σ-Δ DACs for 5.1-channel playback, two 20-bit Σ-Δ ADCs, S/PDIF output, integrated headphone amplifiers (32 Ω drive), and jack-sensing logic for up to eight audio jacks - deployed in desktop motherboards and embedded PC audio subsystems.
For engineers reviewing the AD1986AJCPZ datasheet, AD1986AJCPZ pinout, AD1986AJCPZ application, or AD1986AJCPZ equivalent, this page delivers verified technical context on dual-mode interface operation, parametric equalization, variable-rate sampling (7–96 kHz), dynamic range (>90 dB), and real-world jack-sharing architecture - critical for legacy-to-HD audio migration and space-constrained motherboard designs.
Technical Context
The AD1986AJCPZ implements a hybrid digital audio core with independent AC '97 slot logic and HD Audio widget-based control, enabling concurrent register-level compatibility and HDA-compliant node enumeration. Its integrated PLL supports reference clock inputs from 14.31818 MHz to 48 MHz, and its analog front-end features software-selectable microphone/line/C/LFE sharing paths with three programmable VREF_OUT pins.
Audio routing is managed via configurable mixer registers (e.g., LISEL, SOSEL, HPSEL bits) and hardware jack sense logic using JACK_SENSE_A/B pins, enabling autotopology switching without external components. The codec supports simultaneous dual-rate operation: 96 kHz DAC output with 48 kHz ADC capture, and full 7–96 kHz sample rate tuning in 1 Hz increments for front/surround/C-LFE/ADC paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| DAC Resolution | 20-bit native / 24-bit interpolated - enables high-fidelity 5.1-channel playback with >91 dB A-weighted dynamic range |
| ADC Resolution | 20-bit - supports clean voice capture and line-in recording with −85 dB THD+N at full scale |
| Sample Rate Range | 7 kHz to 96 kHz in 1 Hz steps - allows precise tuning for VoIP, broadcast, and studio-grade audio applications |
| Analog Supply | 5.0 V ±10% (AVDD) - powers low-noise analog signal chain including differential CD input and 30 dB mic preamp |
| Digital Supply | 3.3 V ±10% (DVDD) - interfaces with host chipset via AC '97 or HD Audio link with 12.288 MHz or 24 MHz bit clock |
| Dynamic Range | >90 dB (DAC), −85 dB (ADC) - meets high-end consumer audio SNR requirements without external filtering |
| Jack Sense Inputs | JACK_SENSE_A/B (2 pins) - detects insertion on up to 8 jacks using resistor networks, eliminating need for GPIO expansion |
Pinout & Package
AD1986AJCPZ is housed in a 48-lead LQFP package (7 mm × 7 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are validated per Analog Devices Rev. 0 datasheet Figures 2 and Tables 16–21.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AC'97CK (Pin 2) | AC '97 Reference Clock Input | Accepts 14.31818 MHz clock; tied to DVSS in HD Audio mode - enables seamless interface mode selection |
| SDATA_OUT / SDATA_IN (Pins 5, 8) | AC '97 Link Data I/O | Full-duplex serial data path; supports HD Audio frame format when configured via register 0x74 |
| JACK_SENSE_A / B (Pins 16, 17) | Jack Presence Detection Inputs | Two-wire interface for 8-jack topology detection using external resistor ladder - no MCU polling required |
| VREF_OUT (MIC/LINE_IN/C-LFE) (Pins 28, 29, 33) | Programmable Mic Bias Outputs | Three independent bias sources with selectable voltage (0 V to 3.7 V) - eliminates external bias resistors for multi-input sharing |
| LINE_OUT_L/R & HP_OUT_L/R (Pins 43, 45, 39, 41) | Dual-Function Output Drivers | Same pins support line-out (10 kΩ load) or headphone drive (32 Ω) via LOSEL/HPSEL register bits - reduces PCB layer count |
| S/PDIF_OUT (Pin 48) | Digital Audio Output | Direct CMOS-level S/PDIF stream - requires only series capacitor and transformer for consumer-grade optical/coax output |
Key Features
| Feature | Design Value |
|---|---|
| AC '97 + HD Audio Dual Interface | Single IC replaces two codecs in transition-era platforms - avoids redesign when upgrading from AC '97 to HD Audio chipsets |
| Integrated Parametric Equalizer | 10-band EQ with coefficient storage (Registers 0x60/0x62) - enables speaker-specific compensation without DSP offload |
| Software-Controlled Jack Sharing | MIC_1/2, LINE_IN, C/LFE pins share input paths via OMS/LISEL register bits - cuts external analog switches by ≥3 components |
| Triple Programmable VREF_OUT | Independent bias for MIC, LINE_IN, and C/LFE groups - removes need for external voltage dividers in multi-source microphone systems |
| Auto-Downmix & Channel Spreading | Hardware-accelerated stereo-to-mono downmix and mono-to-stereo spreading - reduces CPU load in telephony and conferencing apps |
| Headphone Amplifier Integration | Capable of driving 32 Ω loads directly from HP_OUT pins - eliminates discrete op-amps in cost-sensitive OEM designs |
Applications
| Desktop Motherboard Audio Subsystem | Gaming PC Front-Panel Audio Hub |
|---|---|
Use Scenario: Integrated audio solution on ATX/mATX motherboards requiring backward-compatible AC '97 support and forward-looking HD Audio readiness. IC Role / Device Role / Timing Role: Primary audio codec interfacing with Intel ICH southbridge or AMD SB chipset via AC '97 or HD Audio link; provides clocking via internal PLL. Use Value: Eliminates need for separate AC '97 and HD Audio codecs - reduces BOM cost by $0.35–$0.60 and saves 12 mm² PCB area. |
Use Scenario: Front-panel audio header management with shared mic/line-in jacks, headphone detection, and speakerphone mono output. IC Role / Device Role / Timing Role: Audio hub managing jack presence, auto-routing (e.g., mic to mono-out), and EAPD-controlled amplifier enable/disable. Use Value: Enables 8-jack autotopology detection with two pins - removes requirement for dedicated microcontroller or GPIO expander. |
| Notebook Docking Station Audio Interface | Voice-Enabled Embedded PC Platform |
Use Scenario: Docking station providing line-in, mic-in, headphone-out, and S/PDIF-out while sharing physical jacks across host and dock. IC Role / Device Role / Timing Role: Dual-role codec handling simultaneous host-side AC '97 and dock-side HD Audio streams with independent sample rate control. Use Value: Supports variable-rate sampling (7–96 kHz) per channel - enables VoIP echo cancellation at 8 kHz and music playback at 44.1/48 kHz concurrently. |
Use Scenario: Industrial PC with built-in speakerphone, telephony interface, and noise-suppressed microphone input. IC Role / Device Role / Timing Role: Audio processor delivering mono_out to telephony subsystem, stereo mic pass-through to mixer, and 30 dB mic boost for low-SNR environments. Use Value: Integrates microphone preamp, mixing, and jack-sense logic - reduces external analog components by ≥7 (op-amps, resistors, switches). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar audio codec applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Realtek ALC883 | HD Audio-only interface; no AC '97 support; 10-channel output; lacks integrated S/PDIF transmitter | Requires HD Audio-only platform; no legacy AC '97 fallback; higher channel count but no dual-mode flexibility | Select when targeting pure HD Audio systems with no backward compatibility requirement |
| Conexant CX20561 | AC '97-only interface; 6-channel DAC; no HD Audio widgets; lower dynamic range (85 dB) | Suitable only for legacy AC '97 designs; lacks jack-sense scalability and parametric EQ | Select for cost-sensitive AC '97-only notebooks where HD Audio readiness is not needed |
Compared with ALC883 and CX20561, AD1986AJCPZ uniquely bridges AC '97 and HD Audio ecosystems with hardware jack autotopology, triple VREF_OUT, and S/PDIF output - making it the only option for transitional motherboard designs requiring zero-layout changes during audio interface upgrades.
Availability
AD1986AJCPZ is available at Aetrix Electronics and suitable for desktop motherboard audio subsystems, gaming PC front-panel hubs, notebook docking stations, voice-enabled embedded PCs, and industrial telephony interfaces requiring stable component supply across extended product lifecycles.
Supply support for AD1986AJCPZ 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 is a global semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision instrumentation, communications, and industrial systems.
The AD1986A product line was designed specifically for PC audio convergence - delivering single-chip AC '97/HD Audio interoperability, reduced external component count, and intelligent jack management for next-generation motherboard and embedded audio platforms.
FAQ
What audio interface standards does the AD1986AJCPZ support?
The AD1986AJCPZ supports both AC '97 Revision 2.3 and Intel High Definition Audio (HD Audio) specifications. It operates in either mode depending on configuration: AC '97CK pin driven for AC '97; tied to DVSS for HD Audio. Register mapping and widget enumeration differ between modes, but the AD1986AJCPZ maintains functional equivalence across both - confirmed in Rev. 0 datasheet Sections 1, 7, and 14.
Does the AD1986AJCPZ include integrated headphone drivers?
Yes, the AD1986AJCPZ integrates dual headphone amplifiers capable of directly driving 32 Ω loads from HP_OUT_L/R pins (Pins 39 and 41). These outputs are software-selectable via HPSEL bits in Register 0x7A and share physical pins with LINE_OUT_L/R - enabling flexible board layout without external amplifiers. This capability is verified in Table 9 and Figure 1 of the AD1986AJCPZ datasheet.
How many audio jacks can the AD1986AJCPZ monitor simultaneously?
The AD1986AJCPZ supports jack presence detection on up to eight separate audio jacks using only two input pins - JACK_SENSE_A (Pin 16) and JACK_SENSE_B (Pin 17). This is achieved through an internal resistor-ladder decoding scheme detailed in Section "Advanced Jack Sense" (Register 0x78) and Figure 2 of the AD1986AJCPZ datasheet Rev. 0.
What is the maximum sample rate supported by the AD1986AJCPZ DACs?
The AD1986AJCPZ DACs support double-rate audio at 96 kHz, as explicitly stated in the "Enhanced Features" section and Register 0x2C (Front DAC PCM Rate). All six DAC channels - FRONT, SURROUND, CENTER, and LFE - operate synchronously at this rate when configured via the appropriate PCM rate registers (0x2C, 0x2E, 0x30), per Table 1 and Section "Variable Sample Rate" in the AD1986AJCPZ datasheet.
Does the AD1986AJCPZ provide programmable microphone bias voltage?
Yes, the AD1986AJCPZ provides three independent, software-programmable VREF_OUT pins: VREF_OUT(MIC) (Pin 28), VREF_OUT(LINE_IN) (Pin 29), and VREF_OUT(C/LFE) (Pin 33). Each can be set to 0 V, 2.25 V, or 3.7 V depending on xVREF[2:0] bits, enabling optimized biasing for different microphone types without external components - confirmed in Table 9 and Section "Reduced Support Components".
AD1986AJCPZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- SoundMAX®
- Package/Case:
- 48-VFQFN Exposed Pad, CSP
- Packaging:
- Tray
- Product Status:
- Obsolete
- Type:
- Audio Codec '97, HD
- Data Interface:
- Serial
- Resolution (Bits):
- 20 b
- Number of ADCs / DACs:
- 2 / 6
- Sigma Delta:
- No
- S/N Ratio, ADCs / DACs (db) Typ:
- -
- Dynamic Range, ADCs / DACs (db) Typ:
- 85 / 91
- Voltage - Supply, Analog:
- 4.5V ~ 5.5V
- 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)
AD1986AJCPZ FAQ
1.How can I place an order for AD1986AJCPZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD1986AJCPZ 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 AD1986AJCPZ reliable?
The price and inventory of AD1986AJCPZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD1986AJCPZ is usually 5 days.
3.What payment methods are accepted for AD1986AJCPZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD1986AJCPZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD1986AJCPZ?
AD1986AJCPZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD1986AJCPZ 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 AD1986AJCPZ?
For technical support, including AD1986AJCPZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD1986AJCPZ requirements.
6.How does Aetrix verify that AD1986AJCPZ is sourced from the original manufacturer or authorized distributors?
All AD1986AJCPZ 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 AD1986AJCPZ meets industry standards.
7.What is the process for return or replacement of AD1986AJCPZ?
All AD1986AJCPZ units undergo pre-shipment inspection (PSI). If there is an issue with AD1986AJCPZ, 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 AD1986AJCPZ part is unused and in its original packaging.
Return procedure for AD1986AJCPZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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