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Analog Devices Inc. AD1886JST-REEL
- Part No.:
- AD1886JST-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- CODECS
- Package:
- 48-LQFP
- Datasheet:
-
AD1886JST-REEL.pdf
- Description:
- AC 97 SOUNDMAX CODEC
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
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Product details
Overview
AD1886JST-REEL from Analog Devices is a 16-bit stereo full-duplex AC'97 2.2-compliant audio codec IC designed for PC motherboard and multimedia system audio subsystems. It integrates dual 16-bit ADCs and DACs, a stereo headphone amplifier (±6 dB to –88.5 dB gain), 90 dB dynamic range, 48-terminal LQFP package, and supports variable sample rates from 7.04 kHz to 48 kHz with 1 Hz resolution.
For engineers reviewing the AD1886JST-REEL datasheet, AD1886JST-REEL pinout, AD1886JST-REEL application, or AD1886JST-REEL equivalent, key selection considerations include AC'97 link timing compliance, dual-microphone input support with programmable 20 dB PGA, SPDIF output capability, jack sense GPIO functionality, and split 3.3 V digital / 5 V analog power domain operation.
Technical Context
The AD1886JST-REEL implements a fully AC'97 2.2-compliant digital audio interface with BIT_CLK (12.288 MHz), SYNC, SDATA_IN, and SDATA_OUT signals for daisy-chained communication with host controllers. Its analog front-end includes dedicated MIC1/MIC2 inputs with switchable 20 dB preamplification, CD input with ground-sense circuitry, and four stereo line-level inputs (LINE_IN, AUX, VIDEO, CD).
It features independent digital volume control registers for master, headphone, mono, PC beep, phone-in, mic, line-in, CD, video, and aux channels - all with 1.5 dB step resolution and mute capability. Power-down states support granular control of ADC, DAC, mixer, and SPDIF blocks, enabling as low as 2.2 mA total supply current in full low-power mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit ADC and DAC - ensures CD-quality audio sampling and playback fidelity |
| Dynamic Range | 90 dB (A-weighted) - meets high-fidelity PC audio requirements for SNR-sensitive applications |
| Sample Rate Range | 7.04 kHz to 48 kHz with 1 Hz resolution - supports voice, telephony, and full-bandwidth music playback |
| AC'97 Compliance | AC'97 2.2 - guarantees interoperability with Intel-compatible host controllers and BIOS audio stacks |
| SPDIF Output | 20-bit SPDIF output at 32/44.1/48 kHz - enables direct digital audio output to external receivers without analog conversion |
| Power Supply | 3.3 V digital (DVDD), 5.0 V analog (AVDD) - separates noise-sensitive analog paths from digital switching domains |
| Package | 48-lead LQFP (ST-48) - surface-mount compatible with standard PC motherboard reflow profiles |
Pinout & Package
AD1886JST-REEL is housed in a 48-terminal LQFP (ST-48) package with exposed thermal pad. Pin 1 is marked by a corner notch; pins are numbered counterclockwise. The package supports standard JEDEC reflow profiles and provides separate analog/digital ground and power planes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| XTL_IN / XTL_OUT | Clock oscillator interface | Accepts 24.576 MHz crystal; generates internal AC'97 timing reference - eliminates need for external clock generator |
| BIT_CLK / SYNC / SDATA_IN / SDATA_OUT | AC'97 serial interface | Standard 4-wire AC'97 link - enables plug-and-play integration with host southbridge or audio controller |
| MIC1 / MIC2 / M20 | Dual microphone input with gain control | Independent mic inputs with software-selectable 20 dB PGA - supports desktop + headset mic configurations simultaneously |
| JS (Pin 47) | Jack sense / GPIO | Configurable as plug-detection input or general-purpose output - enables automatic speaker/headphone routing without external logic |
| SPDIF (Pin 48) | Digital audio output | 20-bit SPDIF stream compliant with IEC-60958 - drives coaxial or optical transmitters directly |
| VREFOUT (Pin 28) | Mic bias reference | 2.25 V, 5 mA capable output - powers electret microphones without external regulator or resistor divider |
Key Features
| Feature | Design Value |
|---|---|
| Phat™ Stereo enhancement | Hardware-accelerated 3D spatial audio processing - improves perceived soundstage width without host CPU overhead |
| Mobile Low-Power Mixer Mode | Reduces analog supply current to 22.4 mA while maintaining CD input path - extends battery life in portable docking stations |
| Jack Sense with Automatic Switching | GPIO-configurable JS pin triggers hardware mute and output routing - eliminates OS-level driver polling for plug detection |
| Software-Enabled VREFOUT | VREFOUT can be disabled via register bit - prevents unnecessary mic bias current draw during standby or mute states |
| AC'97 Link Power-Down Control | Individual PR bits disable AC'97 interface while preserving analog signal paths - isolates digital noise during analog-only operation |
Applications
| Desktop PC Audio Subsystem | Industrial HMI Audio Interface |
|---|---|
Use Scenario: Integrated audio solution on ATX/mATX motherboards supporting Windows SoundMAX drivers and legacy AC'97 BIOS initialization. IC Role / Device Role / Timing Role: Primary AC'97 codec interfacing with Intel ICH southbridge; handles all analog I/O, sample rate generation, and SPDIF output. Use Value: Eliminates need for discrete op-amps, filters, and clock buffers - reduces BOM cost and PCB area by >35% versus discrete audio designs. | Use Scenario: Operator terminal with voice prompt playback, microphone input for voice command, and headphone output for private monitoring. IC Role / Device Role / Timing Role: Full-duplex audio interface between ARM-based HMI processor and analog peripherals; uses jack sense for headset auto-detection. Use Value: Single-chip solution supports simultaneous line-in (for diagnostics), mic-in (for commands), and HP-out (for feedback) - avoids multi-codec synchronization issues. |
| PC-Based Telephony Gateway | Embedded Digital Audio Recorder |
Use Scenario: VoIP gateway board connecting PSTN FXS/FXO lines to PC host via USB-to-PCI bridge, requiring speakerphone and PC beep passthrough. IC Role / Device Role / Timing Role: Audio hub managing MONO_OUT (speakerphone), PHONE_IN (handset), PC_BEEP (POST tones), and LINE_OUT (line monitoring). Use Value: Hardware-level PC beep routing persists even during RESET - ensures audible POST codes during boot failure diagnostics. | Use Scenario: Portable field recorder capturing stereo line-in or mic input at 44.1 kHz, storing to SD card, with real-time headphone monitoring. IC Role / Device Role / Timing Role: Simultaneous 16-bit ADC capture and DAC playback using independent sample rate generators - enables zero-latency monitoring. Use Value: 90 dB SNR and ±0.09 dB passband ripple preserve audio fidelity across full 20 Hz–20 kHz band - meets professional field recording requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar audio codec applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD1885ASTZ | 16-bit AC'97 2.1 codec; no SPDIF output; lacks Phat™ stereo; lower 84 dB dynamic range | Suitable only for basic audio playback/recording without digital output or 3D enhancement | Select when SPDIF and advanced audio features are unnecessary and cost is primary constraint |
| WM9705GDS | 16-bit AC'97 2.2 codec; integrated touch screen controller; no jack sense GPIO; 88 dB dynamic range | Targeted at PDA/tablet platforms requiring touchscreen interface alongside audio | Choose only if touch controller integration is required; otherwise AD1886JST-REEL offers superior audio specs and jack sense flexibility |
Compared with AD1886JST-REEL, AD1885ASTZ omits SPDIF and Phat™ stereo while reducing dynamic range by 6 dB - limiting suitability for premium audio applications; WM9705GDS trades jack sense and higher SNR for integrated touchscreen control, making it incompatible with pure audio-focused designs requiring robust plug detection.
Availability
AD1886JST-REEL is available at Aetrix Electronics and suitable for desktop PC motherboard design, industrial HMI audio interfaces, PC-based telephony gateways, and embedded digital audio recorders requiring stable component supply and long-term production continuity.
Supply support for AD1886JST-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 AD1886JST-REEL belongs to Analog Devices' SoundMAX® AC'97 codec product line, engineered specifically for PC platform audio subsystems requiring AC'97 2.2 compliance, low power consumption, and integrated analog signal conditioning.
FAQ
What is the maximum supported sample rate for AD1886JST-REEL?
The AD1886JST-REEL supports a maximum sample rate of 48 kHz with 1 Hz resolution, as confirmed in its enhanced features list and register map (SR0/SR1 registers). It also supports lower rates including 44.1 kHz and 32 kHz, and down to 7.04 kHz for voice-grade applications. All rates are implemented via programmable sample rate generators synchronized to the 24.576 MHz crystal input.
Does AD1886JST-REEL support both AC'97 2.1 and 2.2 specifications?
Yes, the AD1886JST-REEL is explicitly AC'97 2.2 compliant, and backward compatible with AC'97 2.1 systems. Its functional block diagram, timing parameters (e.g., BIT_CLK frequency, SYNC pulse widths), and register definitions (including extended audio ID/status registers at 0x28/0x2A) confirm full 2.2 feature support, including variable sample rate, jack sense, and enhanced power management.
Can AD1886JST-REEL drive headphones directly without external amplification?
Yes, the AD1886JST-REEL integrates a stereo headphone amplifier capable of driving 32 Ω loads with up to +6 dB gain and –88.5 dB attenuation in 1.5 dB steps. Its HP_OUT_L and HP_OUT_R outputs deliver full-scale 1 Vrms into 32 Ω, meeting standard headphone output requirements without external buffering or gain stages.
What is the function of the JS pin on AD1886JST-REEL?
The JS (Jack Sense) pin on AD1886JST-REEL is a multifunction I/O that can be configured either as an input to detect audio plug insertion (e.g., triggering automatic mute of LINE_OUT when headphones are connected) or as a general-purpose digital output under software control. Its behavior is managed via register 0x72 (Jack Sense/SPDIF Control), enabling flexible hardware-assisted audio routing.
Is AD1886JST-REEL RoHS compliant and lead-free?
Yes, AD1886JST-REEL is RoHS compliant and lead-free. The "JST" in the part number denotes the 48-lead LQFP package (ST-48), and Analog Devices' official documentation and packaging markings for this variant confirm Pb-free terminations and compliance with EU Directive 2011/65/EU. The device uses matte tin lead finish and meets JEDEC J-STD-020 moisture sensitivity level 3.
AD1886JST-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- AD1886
- Package/Case:
- 48-LQFP
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Audio, AC '97
- Data Interface:
- AC'97
- 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 (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-LQFP (7x7)
AD1886JST-REEL FAQ
1.How can I place an order for AD1886JST-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD1886JST-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 AD1886JST-REEL reliable?
The price and inventory of AD1886JST-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD1886JST-REEL is usually 5 days.
3.What payment methods are accepted for AD1886JST-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD1886JST-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD1886JST-REEL?
AD1886JST-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD1886JST-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 AD1886JST-REEL?
For technical support, including AD1886JST-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD1886JST-REEL requirements.
6.How does Aetrix verify that AD1886JST-REEL is sourced from the original manufacturer or authorized distributors?
All AD1886JST-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 AD1886JST-REEL meets industry standards.
7.What is the process for return or replacement of AD1886JST-REEL?
All AD1886JST-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD1886JST-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 AD1886JST-REEL part is unused and in its original packaging.
Return procedure for AD1886JST-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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