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Analog Devices Inc. AD1886AJST-REEL
- Part No.:
- AD1886AJST-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- CODECS
- Package:
- 48-LQFP
- Datasheet:
-
AD1886AJST-REEL.pdf
- Description:
- IC CODEC STEREO 16BIT 48LQFP TR
- Quantity:
- Payment:
- Shipping:
Inventory:2,000
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Product details
Overview
AD1886AJST-REEL from Analog Devices is a 16-bit stereo full-duplex AC'97 2.2-compliant audio codec IC designed for PC motherboard and notebook audio subsystems. It integrates dual 16-bit ADCs and DACs, a stereo headphone amplifier (32 Ω load), SPDIF output, and Phat™ 3D stereo enhancement. Key confirmed parameters include 90 dB dynamic range, 48 kHz max sample rate, 24.576 MHz crystal input, and 48-lead LQFP package.
For engineers reviewing the AD1886AJST-REEL datasheet, AD1886AJST-REEL pinout, AD1886AJST-REEL application, or AD1886AJST-REEL equivalent, this page provides verified functional role, AC'97 link timing compliance, analog I/O channel mapping, power-down state control (PR0–PR6), and real-world audio path configuration for legacy PC audio designs.
Technical Context
The AD1886AJST-REEL implements an AC'97 2.2-compliant digital audio interface with BIT_CLK (12.288 MHz), SYNC (48 kHz frame sync), SDATA_IN/SDATA_OUT serial streams, and hardware RESET. Its analog front-end supports four stereo line-level inputs (LINE_IN, CD, VIDEO, AUX), two mono inputs (PHONE_IN, PC_BEEP), and dual microphone inputs with switchable +20 dB preamp.
It features independent programmable gain amplifiers (PGA) for mic inputs, a 6-bit master volume control (±94.5 dB range, 1.5 dB/step), and dedicated headphone volume registers (±88.5 dB, +6 dB initial gain). Power management includes eight discrete power-down states controlled via PR[0:6] bits, enabling as low as 2.2 mA total supply current in full ADC+DAC+Mixer mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit ADC/DAC - Ensures CD-quality audio digitization and playback without oversampling artifacts. |
| Dynamic Range | 90 dB (A-weighted) - Meets AC'97 specification for SNR performance in line-out and headphone outputs. |
| Sample Rate | 7.04 kHz to 48 kHz (1 Hz resolution) - Supports variable-rate audio streaming for voice, music, and system sounds. |
| AC'97 Compliance | AC'97 2.2 - Guarantees interoperability with Intel-hosted AC'97 controllers and standard BIOS audio initialization. |
| SPDIF Output | 20-bit SPDIF with 32/44.1/48 kHz symbol rates - Enables direct digital audio output to external receivers without analog conversion. |
| Power Dissipation | 306 mW (5 V/3.3 V) - Specifies thermal design margin for LQFP package under full operation at 48 kHz. |
| Supply Voltages | Digital: 3.0–3.6 V (DVDD); Analog: 4.75–5.25 V (AVDD) - Requires split-rail PCB layout with separate analog/digital ground planes. |
Pinout & Package
AD1886AJST-REEL is housed in a 48-lead LQFP (ST-48) package with exposed thermal pad. Pin functions are validated per Analog Devices AD1886A Rev. 0 datasheet pages 8–9.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| XTL_IN / XTL_OUT | Clock oscillator interface | Accepts 24.576 MHz fundamental-mode crystal; drives internal PLL for BIT_CLK and sample rate generation. |
| BIT_CLK / SYNC / SDATA_IN / SDATA_OUT | AC'97 digital audio link | Standard 4-wire AC'97 interface; BIT_CLK = 12.288 MHz; SYNC = 48 kHz frame sync; bidirectional serial data flow. |
| LINE_OUT_L / LINE_OUT_R / HP_OUT_L / HP_OUT_R | Analog audio outputs | Line outputs drive 10 kΩ loads; headphone outputs drive 32 Ω loads with integrated 100 mA amplifiers. |
| MIC1 / MIC2 / M20 control | Microphone input stage | Dual mic inputs with software-selectable +20 dB PGA gain; M20 bit enables high-sensitivity desktop mic support. |
| VREFOUT / VREF | Reference voltage generation | VREFOUT supplies 2.25 V @ 5 mA bias to electret microphones; VREF is internal reference filter node. |
| JS (JACK SENSE) | GPIO / plug detection | Configurable as jack sense input to auto-mute LINE_OUT/MONO_OUT when headphones are inserted. |
Key Features
| Feature | Design Value |
|---|---|
| Phat™ Stereo 3D Enhancement | Hardware-accelerated spatial audio processing using CX3D/RX3D external RC network for immersive desktop audio. |
| Mobile Low-Power Mixer Mode | Reduces analog supply current to 22.4 mA while maintaining CD input path active and AC-Link disabled. |
| Jack Sense Automation | JS pin triggers automatic routing of audio output between LINE_OUT and HP_OUT based on physical plug insertion. |
| Software-Enabled VREFOUT | VREFOUT can be disabled via register to eliminate mic bias current during standby, improving system power efficiency. |
| Full-Duplex Variable Sample Rates | Independent ADC/DAC sample rate control (7.04–48 kHz) enables simultaneous voice capture and playback at mismatched rates. |
Applications
| Desktop PC Audio Subsystem | Notebook Integrated Audio |
|---|---|
|
Use Scenario: Primary audio codec on ATX motherboard, interfacing with Intel ICH AC'97 controller. IC Role / Device Role: Full-duplex audio interface handling system beep, CD playback, line-in recording, and mic capture. Use Value: 90 dB dynamic range ensures clean audio output; SPDIF output enables digital passthrough to home theater systems. |
Use Scenario: Embedded audio solution in space-constrained notebook platforms with shared motherboard resources. IC Role / Device Role: Dual-role codec providing both speakerphone (MONO_OUT + PHONE_IN) and stereo entertainment audio. Use Value: Jack sense automation eliminates manual audio routing; mobile low-power mixer mode extends battery life during VoIP calls. |
| Legacy Industrial HMI Terminal | PC-Based Voice Recording System |
|
Use Scenario: Operator interface in factory HMIs requiring audible alerts, voice prompts, and hands-free communication. IC Role / Device Role: Audio hub managing PC_BEEP, LINE_OUT for speakers, and PHONE_IN for headset-based telephony. Use Value: Dedicated PC_BEEP path remains active during RESET, ensuring POST error codes are audible even before OS boot. |
Use Scenario: High-fidelity voice logging system capturing interviews or call center interactions via dual mic inputs. IC Role / Device Role: Mic signal conditioner with switchable +20 dB PGA gain and 16-bit ADC for low-noise digitization. Use Value: Confirmed ±0.5 dB interchannel gain mismatch ensures accurate stereo voice imaging; 84–87 dB ADC dynamic range preserves vocal detail. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar AC'97 audio codec applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD1885ASTZ | 16-bit AC'97 2.1 codec; lacks SPDIF output and Phat™ 3D; lower 84 dB dynamic range. | Targeted at cost-sensitive desktop boards without digital audio output requirements. | Select AD1885ASTZ only if SPDIF and 3D enhancement are unnecessary and BOM cost reduction is critical. |
| WM9705GDS | Wolfson 16-bit AC'97 2.2 codec; includes integrated jack detect circuitry but no VREFOUT driver. | Designed for portable devices with tighter power budgets; requires external mic bias circuitry. | Choose WM9705GDS when board space is constrained and jack sense functionality must be self-contained without external GPIO. |
Compared with AD1886AJST-REEL, AD1885ASTZ omits SPDIF and 3D audio features-reducing feature set but lowering cost-while WM9705GDS shifts mic bias responsibility to external components, increasing design complexity but integrating more detection logic on-die.
Availability
AD1886AJST-REEL is available at Aetrix Electronics and suitable for desktop PC motherboard design, notebook audio integration, and industrial HMI terminal development requiring stable component supply and long-term AC'97 compatibility.
Supply support for AD1886AJST-REEL 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 AD1886A belongs to Analog Devices' AC'97 SoundMAX® codec product line, engineered specifically for PC platform audio subsystems requiring AC'97 2.2 compliance, low-power operation, and enhanced audio features like Phat™ stereo and jack sensing.
FAQ
What is the primary function of the AD1886AJST-REEL in a PC audio system?
The AD1886AJST-REEL serves as the core AC'97 2.2-compliant audio codec, performing analog-to-digital conversion for microphone and line inputs, digital-to-analog conversion for line and headphone outputs, and managing the AC'97 digital link with the host controller. Its role in the AD1886AJST-REEL is to deliver full-duplex 16-bit audio with 90 dB dynamic range, SPDIF output, and Phat™ 3D enhancement for desktop and notebook platforms.
Does the AD1886AJST-REEL support variable sample rates for both ADC and DAC independently?
Yes, the AD1886AJST-REEL supports independent variable sample rates from 7.04 kHz to 48 kHz in 1 Hz increments for both ADC and DAC paths. This capability is implemented via dedicated PCM ADC Rate (SR0) and PCM DAC Rate (SR1) registers, allowing the AD1886AJST-REEL to handle simultaneous voice capture at 8 kHz and music playback at 44.1 kHz without resampling.
How does the jack sense (JS) pin operate in the AD1886AJST-REEL?
The JS pin on the AD1886AJST-REEL is a dual-function I/O that can be configured as either a jack sense input or general-purpose digital output. When enabled as jack sense, it detects plug insertion into headphone or line-out jacks and automatically mutes LINE_OUT or MONO_OUT while enabling HP_OUT_L/R-ensuring seamless audio routing without software intervention in the AD1886AJST-REEL.
What power-saving modes are available in the AD1886AJST-REEL, and how are they controlled?
The AD1886AJST-REEL offers eight discrete power-down states controlled by PR[0:6] bits in the Power-Down Control register (Index 26h). These include individual ADC/DAC disable, mixer-only mode, and full standby (0 mA DVDD, 0 mA AVDD). The lowest active state-ADC+DAC+Mixer-draws just 4.1 mA DVDD and 2.2 mA AVDD, making the AD1886AJST-REEL suitable for battery-powered applications requiring audio presence detection.
Is the AD1886AJST-REEL compatible with AC'97 2.1 and 2.2 specifications?
The AD1886AJST-REEL is explicitly AC'97 2.2 compliant, as stated in its functional description and supported features including extended power-down states, SPDIF output, and jack sense. While backward-compatible with AC'97 2.1 controllers at the basic link level (BIT_CLK/SYNC/SDATA), full utilization of AD1886AJST-REEL features like PR[5:0] power control and SPDIF requires AC'97 2.2 host firmware support.
AD1886AJST-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- SoundMAX®
- Package/Case:
- 48-LQFP
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Audio Codec '97
- Data Interface:
- Serial
- Resolution (Bits):
- 16 b
- Number of ADCs / DACs:
- 2 / 2
- Sigma Delta:
- Yes
- S/N Ratio, ADCs / DACs (db) Typ:
- -
- Dynamic Range, ADCs / DACs (db) Typ:
- 87 / 90
- Voltage - Supply, Analog:
- 4.75V ~ 5.25V
- Voltage - Supply, Digital:
- 3V ~ 3.6V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-LQFP (7x7)
AD1886AJST-REEL FAQ
1.How can I place an order for AD1886AJST-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD1886AJST-REEL 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 AD1886AJST-REEL reliable?
The price and inventory of AD1886AJST-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD1886AJST-REEL is usually 5 days.
3.What payment methods are accepted for AD1886AJST-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD1886AJST-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD1886AJST-REEL?
AD1886AJST-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD1886AJST-REEL 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 AD1886AJST-REEL?
For technical support, including AD1886AJST-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD1886AJST-REEL requirements.
6.How does Aetrix verify that AD1886AJST-REEL is sourced from the original manufacturer or authorized distributors?
All AD1886AJST-REEL 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 AD1886AJST-REEL meets industry standards.
7.What is the process for return or replacement of AD1886AJST-REEL?
All AD1886AJST-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD1886AJST-REEL, 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 AD1886AJST-REEL part is unused and in its original packaging.
Return procedure for AD1886AJST-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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