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Analog Devices Inc. AD1816JS3
- Part No.:
- AD1816JS3
- Manufacturer:
- Analog Devices Inc.
- Category:
- CODECS
- Package:
- 100-BQFP
- Datasheet:
-
AD1816JS3.pdf
- Description:
- PC AUDIO CONTROLLER REV. 3
- Quantity:
- Payment:
- Shipping:
Inventory:2,200
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Product details
Overview
AD1816JS3 from Analog Devices is a single-chip ISA Plug and Play multimedia audio controller integrating 16-bit stereo SD ADC/DAC, OPL3-compatible music synthesizer, Phat™ Stereo phase expander, MPU-401 UART, dual I²S ports, DSP serial port, and integrated game port. It delivers full-duplex audio at sample rates from 4 kHz to 55.2 kHz with 1 Hz resolution, supports Windows 95/NT/3.1 and SoundBlaster Pro/AdLib legacy, and operates from a +5 V supply in 100-lead PQFP.
For engineers reviewing the AD1816JS3 datasheet, AD1816JS3 pinout, AD1816JS3 application, or AD1816JS3 equivalent, this page provides verified technical context on ISA bus timing, analog input/output gain/attenuation ranges (±46.5 dB), SNR (82 dB A-weighted), THD+N (–76 dB), and hardware volume control implementation - all critical for PC audio subsystem design and legacy compatibility validation.
Technical Context
The AD1816JS3 implements a fully integrated ISA host interface with 16-bit address decode, dual Type F FIFO DMA support (DRQ0/1/3, DACK0/1/3), and programmable IRQ routing (IRQ3/4/5/7/9–15). Its audio path includes independent 16-bit linear SD converters with decimation/interpolation filters (0.4×FS passband, 82 dB stopband rejection) and analog gain/attenuation stages with 1.5 dB step resolution across six input sources.
It embeds an OPL3-compatible FM synthesizer, Phat Stereo circuitry using external RX3D/CX3D network, and two configurable I²S ports supporting left/right-justified and I²S-justified formats. The device uses a 33 MHz crystal (XTALI/XTALO) and provides programmable clock outputs (PCLKO) at FS, 8×FS, up to 256×FS for MPEG decoder synchronization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit linear ADC/DAC - ensures CD-quality audio fidelity and precise digital signal representation |
| SNR (A-weighted) | 82 dB (ADC), 83 dB (DAC) - enables high-fidelity playback and recording with low noise floor |
| THD+N | –76 dB (ADC), –78 dB (DAC) - maintains clean signal integrity under full-scale operation |
| Sample Rate Range | 4 kHz to 55.2 kHz with 1 Hz resolution - supports voice, telephony, CD, and professional audio sampling |
| Analog Input Gain Range | +12 dB to –34.5 dB in 1.5 dB steps (LINE/CD/SYNTH/VID/MIC) - flexible level matching for diverse audio sources |
| Master Volume Range | 0 dB to –46.5 dB in 1.5 dB steps (L_OUT/R_OUT/PHONE_OUT) - hardware-controlled output attenuation without CPU overhead |
| Power Supply | +5 V (VDD/VCC), ±0.25 V tolerance - compatible with standard ISA bus power rails |
| Package | 100-lead PQFP (S-100) - surface-mount footprint suitable for PC motherboard integration |
Pinout & Package
AD1816JS3 is packaged in a 100-lead Plastic Quad Flatpack (PQFP, S-100) with 0.5 mm lead pitch. Pin functions are validated per Analog Devices AD1816A datasheet Rev. A, including dedicated ISA bus signals (PC_A[15:0], PC_D[7:0], IOR/IOW, AEN, DRQ/DACK, IRQ), dual I²S ports (I2S0/I2S1), analog I/O (L_LINE/R_LINE, L_OUT/R_OUT, MIC, PHONE_IN/OUT), and hardware volume controls (VOL_UP/VOL_DN).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PC_A[15:0] | ISA Address Bus Input | 16-bit decoded address lines enabling register and memory-mapped resource selection |
| PC_D[7:0] | ISA Data Bus Bidirectional | 8-bit bidirectional data path with 24 mA drivers for PIO transfers and configuration access |
| I2S0_DATA / VOL_UP | Muxed I/O Terminal | Configurable as I²S0 serial data input or hardware volume-up control (active-low, 25 ms minimum pulse) |
| I2S0_LRCLK / VOL_DN | Muxed I/O Terminal | Configurable as I²S0 left/right clock or hardware volume-down control (active-low, 25 ms minimum pulse) |
| L_OUT / R_OUT | Analog Line Output | Post-mixed, master-volume-attenuated line-level outputs (2.8 V p-p, 570 Ω impedance) |
| MIC | Analog Microphone Input | AC-coupled mono input supporting software-selectable +20 dB PGA gain or 0 dB direct path |
| XTALI / XTALO | Crystal Oscillator Interface | 33 MHz crystal connection points; XTALI accepts external clock (VIH = 2.4 V) when crystal omitted |
| VOL_UP / VOL_DN | Hardware Volume Control | Dedicated pins enabling real-time analog output level adjustment without software intervention or register writes |
Key Features
| Feature | Design Value |
|---|---|
| ISA Plug and Play Compatibility | On-chip PnP ROM enables automatic resource allocation (I/O, IRQ, DRQ, memory) during PC boot without manual jumper configuration |
| OPL3-Compatible Music Synthesizer | Integrated FM synthesis engine delivering AdLib-compatible sound generation for DOS games and legacy applications |
| Phat™ Stereo Phase Expander | External RC network (RX3D/CX3D) widens stereo image via analog phase manipulation - no DSP processing required |
| Dual Independent I²S Ports | I2S0 and I2S1 support simultaneous connection to separate codecs or DACs, enabling multi-zone audio or record/playback isolation |
| Full-Duplex Operation at Different Sample Rates | Independent ADC/DAC sample rate programming allows concurrent capture at 44.1 kHz and playback at 48 kHz without resampling artifacts |
| Integrated Game Port with Timer | Built-in joystick interface (A_1/A_2/A_X/A_Y/B_1/B_2) with internal timer eliminates need for discrete game port IC |
Applications
| Desktop PC Audio Subsystem | Legacy DOS Gaming Platform |
|---|---|
Use Scenario: Integrated audio solution for ISA-based desktop motherboards requiring Windows 95/NT and DOS compatibility. IC Role / Device Role / Timing Role: Central audio controller managing ISA bus arbitration, analog/digital conversion, mixing, and legacy peripheral interfaces. Use Value: Eliminates discrete codec, synthesizer, and game port ICs - reduces BOM cost and PCB area while maintaining SoundBlaster Pro/AdLib compliance. |
Use Scenario: Hardware-accelerated audio for DOS-era games relying on OPL3 FM synthesis and MPU-401 MIDI commands. IC Role / Device Role / Timing Role: OPL3-compatible FM synthesizer and MPU-401 UART providing real-time note generation and sequencer communication. Use Value: Delivers authentic AdLib/SoundBlaster Pro sound reproduction without software emulation overhead or latency penalties. |
| Modem-Integrated Audio System | Multi-Source Audio Mixer |
Use Scenario: Shared audio path between modem (DAA) and PC audio, using PHONE_IN/PHONE_OUT for telephony interface. IC Role / Device Role / Timing Role: Analog front-end multiplexer and mixer supporting simultaneous modem signaling and PC audio playback/capture. Use Value: Enables speakerphone functionality and call recording by routing DAA signals through same ADC/DAC chain used for line/mic inputs. |
Use Scenario: Aggregation of six analog sources (LINE, CD, SYNTH, VID, MIC, PHONE) into stereo output with independent gain control. IC Role / Device Role / Timing Role: Programmable analog gain/attenuation matrix (1.5 dB steps) and digital mixer supporting simultaneous source mixing. Use Value: Allows real-time blending of background music (CD), voice commentary (MIC), and video audio (VID) without external op-amp networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multimedia audio controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CS4231-AZ | Single 16-bit stereo codec without integrated synthesizer, game port, or PnP logic; requires external ISA glue logic | Lacks OPL3, MPU-401, and hardware volume controls - suitable only for basic audio I/O, not legacy gaming | Select when minimal BOM count and pure codec function are prioritized over DOS compatibility and system integration |
| YMF262 (OPL3) | Dedicated FM synthesizer IC only; no ADC/DAC, no ISA interface, no mixer or volume control | Provides only music synthesis - must be paired with separate codec and bus interface for full audio subsystem | Select only for retro hardware restoration where discrete OPL3 functionality is required and system-level integration is handled externally |
Compared with CS4231-AZ and YMF262, the AD1816JS3 uniquely integrates ISA interface, dual I²S, hardware volume, Phat Stereo, and OPL3 in one PQFP package - reducing component count by ≥4 ICs while preserving full legacy software compatibility.
Availability
AD1816JS3 is available at Aetrix Electronics and suitable for desktop PC motherboard design, legacy DOS gaming platform development, and industrial embedded audio systems requiring stable component supply and long-term obsolescence management.
Supply support for AD1816JS3 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 AD1816JS3 belongs to Analog Devices' SoundPort® family of PC audio controllers, designed specifically to consolidate ISA-based multimedia subsystems - replacing multiple discrete components with a single chip supporting Microsoft PC 97 requirements and backward compatibility.
FAQ
What is the primary function of the AD1816JS3 in a PC audio system?
The AD1816JS3 serves as a complete ISA-based multimedia audio controller, integrating 16-bit stereo ADC/DAC, OPL3-compatible FM synthesizer, MPU-401 UART, dual I²S ports, hardware volume controls, and Plug and Play logic. It replaces multiple discrete ICs in legacy PC designs and enables full-duplex audio processing while maintaining compatibility with Windows 95/NT and DOS-era SoundBlaster Pro/AdLib software - making the AD1816JS3 essential for motherboard-level audio integration.
Does the AD1816JS3 support simultaneous different sample rates for playback and capture?
Yes, the AD1816JS3 supports full-duplex operation at independent sample rates - for example, capturing at 44.1 kHz while playing back at 48 kHz - without requiring external resampling. This capability is enabled by separate clock domains and FIFO buffers for ADC and DAC paths, allowing the AD1816JS3 to handle mixed-rate audio streams typical in multimedia applications such as voice-over-IP with background music.
How does the Phat™ Stereo feature work on the AD1816JS3?
The Phat™ Stereo circuitry in the AD1816JS3 uses external passive components (RX3D resistor and CX3D capacitor) connected to dedicated pins to implement analog phase expansion - widening the perceived stereo image without digital processing. This analog approach avoids latency and CPU load, and the AD1816JS3 datasheet specifies exact component values and layout guidelines to ensure consistent performance across implementations using the AD1816JS3.
What are the hardware volume control capabilities of the AD1816JS3?
The AD1816JS3 provides dedicated VOL_UP and VOL_DN pins that enable real-time, analog-domain master volume adjustment on L_OUT, R_OUT, and PHONE_OUT outputs. Each press (active-low, ≥25 ms) changes volume in 1.5 dB increments across a 0 dB to –46.5 dB range. This hardware control operates independently of software registers, ensuring immediate response and eliminating driver dependency - a key advantage of the AD1816JS3 in embedded or low-resource environments.
Is the AD1816JS3 compatible with modern operating systems or only legacy platforms?
The AD1816JS3 was designed for ISA-based PCs targeting Windows 95/NT/3.1 and DOS, and its Plug and Play support aligns with Microsoft PC 97 requirements. While it lacks native drivers for modern OSes like Windows 10/11 or Linux kernels beyond 2.6, the AD1816JS3 remains viable in industrial embedded systems, retro-computing projects, and legacy maintenance where ISA infrastructure persists - its value lies in deterministic hardware behavior and documented register-level control, not OS abstraction layers.
AD1816JS3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- AD1816
- Package/Case:
- 100-BQFP
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Stereo Audio
- Data Interface:
- DSP, I2S, Parallel, SPI
- Resolution (Bits):
- 16 b
- Number of ADCs / DACs:
- 1 / 1
- Sigma Delta:
- Yes
- S/N Ratio, ADCs / DACs (db) Typ:
- 82 / 83
- Dynamic Range, ADCs / DACs (db) Typ:
- 82 / 82
- Voltage - Supply, Analog:
- 4.75V ~ 5.25V
- Voltage - Supply, Digital:
- 4.75V ~ 5.25V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 100-PQFP (20x14)
AD1816JS3 FAQ
1.How can I place an order for AD1816JS3 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD1816JS3 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 AD1816JS3 reliable?
The price and inventory of AD1816JS3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD1816JS3 is usually 5 days.
3.What payment methods are accepted for AD1816JS3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD1816JS3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD1816JS3?
AD1816JS3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD1816JS3 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 AD1816JS3?
For technical support, including AD1816JS3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD1816JS3 requirements.
6.How does Aetrix verify that AD1816JS3 is sourced from the original manufacturer or authorized distributors?
All AD1816JS3 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 AD1816JS3 meets industry standards.
7.What is the process for return or replacement of AD1816JS3?
All AD1816JS3 units undergo pre-shipment inspection (PSI). If there is an issue with AD1816JS3, 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 AD1816JS3 part is unused and in its original packaging.
Return procedure for AD1816JS3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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