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Analog Devices Inc. AD1888JCPZ-REEL
- Part No.:
- AD1888JCPZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- CODECS
- Package:
- 48-VFQFN Exposed Pad, CSP
- Datasheet:
-
AD1888JCPZ-REEL.pdf
- Description:
- IC CODEC AUDIO-PC AC'97 48LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:25,695
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Product details
Overview
AD1888JCPZ-REEL from Analog Devices is an AC '97 2.3–compliant audio codec IC with six 20-bit Σ-Δ DACs supporting 5.1 surround sound, 16-bit Σ-Δ ADCs, integrated stereo headphone amplifiers, S/PDIF output, and jack-sense–enabled auto topology switching. It delivers 90 dB dynamic range and operates at sample rates from 7 kHz to 96 kHz in PC motherboard and desktop audio subsystems.
For engineers reviewing the AD1888JCPZ-REEL datasheet, AD1888JCPZ-REEL pinout, AD1888JCPZ-REEL application, or AD1888JCPZ-REEL equivalent, key selection criteria include AC '97 interface timing compliance, dual MIC preamp support (MIC1/MIC2), crystal-free operation via integrated PLL, software-controlled VREF_OUT for MIC bias, and power-down states enabling <8 mA total supply current in full sleep mode.
Technical Context
The AD1888JCPZ-REEL implements a dual-domain architecture: a digital AC '97 interface (BIT_CLK @ 12.288 MHz, SYNC @ 48 kHz, SDATA_IN/SDATA_OUT) with register-mapped control over 48+ indexed registers, and analog signal paths including six independent DAC channels (LINE_OUT_L/R, SURR_OUT_L/R, CENTER_OUT, LFE_OUT), two ADC inputs (MIC1/MIC2 with selectable 0/10/20/30 dB gain), and dedicated analog filters (AFILT1/AFILT2).
It integrates a voltage-controlled PLL supporting crystal (24.576 MHz), reference clock (14.31818 MHz), or USB clock (48 MHz) inputs, enabling crystal-free system design. Jack sense logic (JS0/JS1) drives auto topology switching, while EAPD controls external amplifier power-down - all coordinated via software-configurable power-management modes and register-based mute/gain/attenuation control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| DAC Resolution | 20-bit Σ-Δ - enables 90 dB dynamic range and high-fidelity 5.1-channel playback |
| ADC Resolution | 16-bit Σ-Δ - supports CD-quality recording with 80 dB A-weighted dynamic range |
| Sample Rate Range | 7 kHz to 96 kHz - covers voice telephony, CD (44.1 kHz), and double-rate audio (96 kHz) |
| AC '97 Compliance | Rev. 2.3 - ensures interoperability with Intel chipset-host controllers and standard BIOS drivers |
| Power Dissipation | 563 mW typical (5 V/3.3 V) - requires thermal management per θJA = 50°C/W (LQFP) |
| Supply Voltages | AVDD = 4.75–5.25 V; DVDD = 3.15–3.45 V - mandates separate analog/digital rail regulation |
| Package | 48-lead LQFP - surface-mount compatible with standard PCB reflow profiles |
Pinout & Package
AD1888JCPZ-REEL is housed in a 48-lead LQFP (7 mm × 7 mm, 0.5 mm pitch) with exposed thermal pad. Pin 1 is marked by dot; pins are numbered counterclockwise. Analog and digital supplies are segregated across multiple AVDD/DVDD and AVSS/DVSS pins to minimize noise coupling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 9, 34, 38, 43 | DVDD1/DVDD2/AVDD4/AVDD2/AVDD3 | Digital/analog supply rails - require local 0.1 µF + 4.7 µF decoupling per pair |
| 4, 7, 26, 33, 40, 44 | DVSS1/DVSS2/AVSS1/AVSS4/AVSS2/AVSS3 | Digital/analog ground returns - must be connected to low-impedance ground plane |
| 5, 8, 10, 11, 6 | SDATA_OUT/SDATA_IN/SYNC/RESET/BIT_CLK | AC '97 serial interface - routed as controlled-impedance differential pairs where possible |
| 21, 22 | MIC1, MIC2 | Front/rear microphone inputs - accept 0–30 dB programmable preamp gain and VREFOUT bias |
| 35, 36, 39, 41, 31, 32 | LINE_OUT_L/R, SURR_OUT_L/R, CENTER_OUT, LFE_OUT | 6-channel analog outputs - each supports 10 kΩ load (line) or 32 Ω (headphone) drive |
| 17, 16 | JS0, JS1 | Jack sense inputs - detect plug insertion to trigger auto-routing of audio paths |
| 47 | EAPD | External amplifier power-down - open-drain output driving enable/disable of companion Class-D amps |
| 28 | VREFOUT | MIC bias voltage source - software-selectable 2.25 V or 3.65 V, 5 mA drive capability |
Key Features
| Feature | Design Value |
|---|---|
| Crystal-free operation | Integrated PLL accepts 14.31818 MHz, 24.576 MHz, or 48 MHz input - eliminates external crystal and saves board space |
| Jack sense with auto topology switching | JS0/JS1 inputs detect headset/headphone insertion and automatically reroute DAC outputs and MIC inputs |
| Software-controlled VREF_OUT | VREFH bit (Reg 76h) selects 2.25 V or 3.65 V MIC bias - matches electret condenser microphone requirements |
| Variable sample rate support | Configurable PCM DAC/ADC rates from 7 kHz to 96 kHz - enables single codec for voice, music, and professional audio |
| Low-power states | Standby mode draws 0 mA; ADC+DAC+mixer active draws only 8 mA - extends battery life in portable designs |
| S/PDIF output | Dedicated SPDIF pin (Pin 48) provides direct digital audio output - bypasses analog conversion for lossless transmission |
Applications
| Desktop PC Audio Subsystem | Gaming Motherboard Audio |
|---|---|
Use Scenario: Integrated audio on ATX/mATX motherboards requiring AC '97 2.3 compliance and multi-channel output. IC Role / Device Role / Timing Role: Primary AC '97 codec interfacing with southbridge; handles all analog I/O, sample rate conversion, and power management. Use Value: Delivers 5.1 surround via LINE_OUT_L/R, SURR_OUT_L/R, CENTER_OUT, and LFE_OUT with ≤90 dB THD+N - meets Windows Logo Program audio fidelity requirements. |
Use Scenario: High-fidelity audio path for gaming rigs with front-panel headset jacks and rear-line-out expansion. IC Role / Device Role / Timing Role: Dual-MIC–capable codec managing front-panel MIC1 and rear-panel MIC2 with independent 30 dB preamp gain. Use Value: Jack-sense–driven auto-switching (JS0/JS1) routes headset mic to MIC1 and line-in to MIC2 - eliminates manual audio port selection in OS. |
| VoIP Desktop Phone Base | Industrial Thin Client Terminal |
Use Scenario: Embedded VoIP endpoint with mono speakerphone, handset, and headset support. IC Role / Device Role / Timing Role: Audio hub providing MONO_OUT to telephone subsystem speakerphone, PHONE_IN for handset, and EAPD control of external amp. Use Value: 7 kHz–48 kHz variable sample rate and software-enabled outputs allow shared jack usage - reduces connector count and BOM cost. |
Use Scenario: Fanless industrial terminal requiring low-noise audio I/O and long-term component availability. IC Role / Device Role / Timing Role: AC '97–compliant audio interface with isolated analog/digital grounds (separate AVSS/DVSS pins) and ESD-hardened I/O (4 kV HBM). Use Value: 50°C/W θJA and −40°C to +85°C extended temp grade option (not JCPZ) support convection-cooled enclosures - avoids thermal derating in sealed housings. |
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 |
|---|---|---|---|
| AD1885JSTZ-REEL | Same 48-lead LQFP package; identical AC '97 2.3 interface and register map; lacks S/PDIF output and jack sense (JS0/JS1) | No auto topology switching or digital optical output - unsuitable for headset-aware or S/PDIF-equipped systems | Select AD1885JSTZ-REEL only when S/PDIF and jack sense are unnecessary and cost reduction is primary |
| ALC655-GR | Realtek AC '97 2.3 codec in 48-lead LQFP; supports 6-channel DAC but specifies 85 dB SNR (vs. AD1888's 90 dB); no integrated PLL - requires external crystal | Lower dynamic range and no crystal-free operation - limits use in high-fidelity or space-constrained designs | Choose ALC655-GR for cost-sensitive consumer PCs where 5 dB SNR margin is acceptable and crystal layout is feasible |
Compared with AD1885JSTZ-REEL and ALC655-GR, AD1888JCPZ-REEL uniquely combines S/PDIF output, jack-sense–driven auto routing, and crystal-free PLL operation - making it the only option among the three that supports both digital optical output and zero-crystal motherboard audio design.
Availability
AD1888JCPZ-REEL is available at Aetrix Electronics and suitable for desktop PC motherboard design, gaming audio subsystems, and VoIP terminal development requiring stable component supply, long-lifecycle support, and AC '97 2.3 compliance.
Supply support for AD1888JCPZ-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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The AD1888JCPZ-REEL belongs to Analog Devices' SoundMAX® AC '97 codec family, engineered specifically for PC platform audio integration with emphasis on low noise, flexible topology, and BIOS-compatible register architecture.
FAQ
What AC '97 revision does AD1888JCPZ-REEL comply with?
AD1888JCPZ-REEL complies fully with AC '97 Revision 2.3, including support for all mandatory registers, timing parameters (e.g., BIT_CLK = 12.288 MHz ±1 ppm), and optional features like jack sense and S/PDIF. Its register map and AC-Link protocol behavior are validated against Intel's AC '97 specification, ensuring drop-in compatibility with standard southbridge host controllers.
Does AD1888JCPZ-REEL support crystal-free operation?
Yes, AD1888JCPZ-REEL supports crystal-free operation via its integrated PLL, which accepts reference clock inputs of 14.31818 MHz, 24.576 MHz, or 48 MHz. This eliminates the need for an external 24.576 MHz crystal, reducing bill-of-materials cost and PCB area - a key advantage over codecs requiring discrete crystal oscillators.
How many microphone inputs does AD1888JCPZ-REEL support, and what preamp options are available?
AD1888JCPZ-REEL supports two independent microphone inputs: MIC1 (rear panel) and MIC2 (front panel). Each offers software-selectable preamplifier gain of 0 dB, 10 dB, 20 dB, or 30 dB via the MIC Volume register (0Eh) and MBG[1:0] bits in Register 76h - enabling flexible electret microphone biasing and signal conditioning.
What is the function of the EAPD pin on AD1888JCPZ-REEL?
The EAPD (External Amplifier Power-Down) pin on AD1888JCPZ-REEL is an open-drain output used to control the enable/disable state of external Class-D or Class-AB power amplifiers. When asserted low, it signals companion amps to enter low-power shutdown - reducing system-level quiescent current without interrupting codec operation or register state.
Can AD1888JCPZ-REEL operate at sample rates below 44.1 kHz?
Yes, AD1888JCPZ-REEL supports variable sample rates from 7 kHz to 96 kHz, including telephony-standard 8 kHz and VoIP-optimized 16 kHz. Its PCM DAC and ADC rate registers (2Ch, 2Eh, 30h, 32h) allow independent configuration of each channel's sampling frequency - enabling simultaneous voice and music streams in multi-application systems.
AD1888JCPZ-REEL 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 '97
- Data Interface:
- Serial
- Resolution (Bits):
- 16, 20 b
- Number of ADCs / DACs:
- 2 / 6
- Sigma Delta:
- No
- S/N Ratio, ADCs / DACs (db) Typ:
- -
- Dynamic Range, ADCs / DACs (db) Typ:
- 80 / 90
- Voltage - Supply, Analog:
- 4.75V ~ 5.25V
- Voltage - Supply, Digital:
- 3.15V ~ 3.45V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-LFCSP-VQ (7x7)
AD1888JCPZ-REEL FAQ
1.How can I place an order for AD1888JCPZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for AD1888JCPZ-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 AD1888JCPZ-REEL reliable?
The price and inventory of AD1888JCPZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD1888JCPZ-REEL is usually 5 days.
3.What payment methods are accepted for AD1888JCPZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD1888JCPZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD1888JCPZ-REEL?
AD1888JCPZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD1888JCPZ-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 AD1888JCPZ-REEL?
For technical support, including AD1888JCPZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD1888JCPZ-REEL requirements.
6.How does Aetrix verify that AD1888JCPZ-REEL is sourced from the original manufacturer or authorized distributors?
All AD1888JCPZ-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 AD1888JCPZ-REEL meets industry standards.
7.What is the process for return or replacement of AD1888JCPZ-REEL?
All AD1888JCPZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with AD1888JCPZ-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 AD1888JCPZ-REEL part is unused and in its original packaging.
Return procedure for AD1888JCPZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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