My Inquiry
My Account
Analog Devices Inc. AD1987JCPZ
- Part No.:
- AD1987JCPZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- CODECS
- Package:
- 48-VFQFN Exposed Pad, CSP
- Datasheet:
-
AD1987JCPZ.pdf
- Description:
- IC CODEC SOUNDMAX HD 48-LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:3,771
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD1987JCPZ from Analog Devices is a High Definition Audio (HD Audio) codec IC designed for desktop PC audio subsystems, featuring eight 192 kHz DACs, four 96 kHz ADCs, three stereo headphone outputs, S/PDIF output, and jack retasking support. It delivers 95 dB audio output dynamic range and 90 dB input SNR with 24-bit PCM resolution across independent sample rates up to 192 kHz.
For engineers reviewing the AD1987JCPZ datasheet, AD1987JCPZ pinout, AD1987JCPZ application, or AD1987JCPZ equivalent, this page provides verified technical context, HD Audio link compliance details, real-world jack configuration options, power-down state behavior, and validated alternative codecs for Vista Premium–certified desktop audio designs.
Technical Context
The AD1987JCPZ implements an Intel HD Audio-compliant digital interface with 24-bit/192 kHz DACs and 24-bit/96 kHz ADCs, supporting simultaneous 4-channel recording and 7.1 surround playback via retaskable analog I/O ports. Its architecture includes dedicated S/PDIF transmit path, internal digital PCBeep generator, and analog mixer with selectable stereo routing.
It integrates four independent microphone bias circuits (MIC_BIAS-A/B/C/E), impedance/presence detection on all jacks, and advanced power management enabling D3 low-power state with only 22.2 mA total supply current. The device uses a 48-lead LFCSP_VQ package with separate AVDD/DVDD/DVIO supplies and strict analog/digital ground separation requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| DAC Count / Resolution | Eight 24-bit DACs supporting 8–192 kHz sample rates; enables 7.1 surround + independent headphone output without external mixing. |
| ADC Count / Resolution | Four 24-bit ADCs supporting 8–96 kHz sample rates; allows simultaneous quad-mic array capture or dual stereo record paths. |
| Audio Performance | 95 dB DAC dynamic range (A-weighted), 90 dB ADC SNR - meets Microsoft Vista Premium logo requirements for desktop PCs. |
| Jack Retasking | Full HD Audio widget-based retasking: supports 7.1 on 5 jacks, 5.1 on 3 jacks, front-panel HP/MIC swap, and C/LFE channel swapping. |
| Power Management | D3 state draws 22.2 mA (IDVDD + IAVDD); individual DAC/ADC pair shutdown saves 6 mA or 5.3 mA respectively. |
| S/PDIF Support | Dedicated S/PDIF output supporting 16/20/24-bit PCM and AC3 at 44.1–192 kHz - enables lossless digital audio passthrough to external receivers. |
| Package | 48-lead Pb-free LFCSP_VQ (7 mm × 7 mm, very thin quad); requires exposed thermal pad soldering and strict AVDD filtering per datasheet. |
Pinout & Package
AD1987JCPZ is housed in a 48-lead LFCSP_VQ (CP-48-1) package with exposed thermal pad. Pin 1 is marked by top-side indicator; package complies with JEDEC MO-220-VKKD-2 standard and requires 0.1 μF/1.0 μF/10 μF decoupling on DVCORE (Pin 1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PORT-A_L / PORT-A_R | Front panel headphone/line-out (HP/LO) | Capable of driving 32 Ω headphones directly; supports jack presence detection and retasking as MIC input. |
| PORT-B_L / PORT-B_R | Front panel microphone/line-in (MIC/LI) | Includes MIC bias (MIC_BIAS-A), boost amplifier, and impedance sensing; used for front-panel mic with plug detection. |
| PORT-D_L / PORT-D_R | Rear panel front/headphone (HP/LO) | Primary stereo line-out path; supports C/LFE swapping and can be retasked as surround-center/side in 7.1 mode. |
| PORT-E_L / PORT-E_R | Rear panel microphone (MIC) | Dedicated rear mic input with MIC_BIAS-E; supports quad-mic array configurations when combined with other ports. |
| S/PDIF_OUT | Digital audio output | CMOS-level S/PDIF signal compliant with IEC 60958; requires 75 Ω series termination and proper isolation from analog sections. |
| MIC_BIAS-IN (Pin 33) | MIC bias voltage source | Accepts 3.3 V or 5.0 V input to generate programmable bias voltages (0 V, 1.65 V, 2.86–3.95 V) for all MIC_BIAS pins. |
| GPIO_0 / GPIO_1/EAPD | General-purpose I/O | GPIO_1 doubles as EAPD (External Amplifier Shutdown); high-Z = amp enabled, DVSS = amp disabled - critical for speaker protection. |
Key Features
| Feature | Design Value |
|---|---|
| 8 DAC / 4 ADC architecture | Enables true 7.1 surround + independent headphone output without external DACs or multiplexers - reduces BOM and layout complexity. |
| HD Audio jack retasking | Runtime reconfiguration of all 8 ports (A–H) via HD Audio verbs - supports OEM-specific jack layouts (e.g., 5.1 on 3 jacks) without hardware change. |
| Impedance & presence detection | Hardware-level plug detection on all jacks using SENSE_A/SRC_B and SENSE_B/SRC_A pins - eliminates need for external sense resistors or microcontroller polling. |
| Internal 32-bit arithmetic engine | Prevents quantization noise accumulation during digital mixing and volume control - preserves full 24-bit dynamic range end-to-end. |
| Dedicated S/PDIF transmitter | Independent digital output path with no shared resources with ADC/DAC streams - ensures glitch-free AC3/PCM passthrough during multichannel playback. |
| Advanced power-down states | Per-block shutdown (DAC/ADC/mixer/MIC_BIAS) enables fine-grained power optimization - critical for meeting Vista Premium idle power targets. |
Applications
| Desktop PC Audio Subsystem | Vista Premium–Certified Systems |
|---|---|
Use Scenario: High-fidelity audio output and multi-source recording in consumer desktop motherboards. IC Role / Device Role / Timing Role: Primary HD Audio codec interfacing with Intel PCH via HD Audio link; handles all analog I/O conversion, jack sensing, and digital mixing. Use Value: Eliminates need for discrete op-amps, mic bias generators, and S/PDIF transmitters - reduces component count by ≥12 parts vs. legacy AC'97 designs. |
Use Scenario: Meeting Microsoft's Vista Premium audio certification requirements for OEM desktop platforms. IC Role / Device Role / Timing Role: Certified HD Audio codec delivering ≥95 dB DAC DR, ≥90 dB ADC SNR, and full jack retasking compliance per Intel HD Audio spec. Use Value: Enables "Vista Premium" logo qualification out-of-box - avoids costly firmware rework or third-party validation delays. |
| 7.1 Surround Sound Systems | Front-Panel Audio Hub |
Use Scenario: Enabling 7.1-channel analog output using only five rear-panel jacks plus front headphone port. IC Role / Device Role / Timing Role: Configures PORT-D, PORT-G, PORT-H, PORT-F, and PORT-A as C/LFE, surround-side, surround-center, surround-rear, and front-headphone outputs respectively. Use Value: Achieves full 7.1 analog output without additional DACs or external switching - maintains channel separation >95 dB. |
Use Scenario: Managing front-panel headphone/microphone connectivity with automatic plug detection and retasking. IC Role / Device Role / Timing Role: Uses PORT-A and PORT-B with SENSE_A/SRC_B pins to detect jack insertion/removal and dynamically assign HP/MIC functions. Use Value: Delivers seamless front-panel audio experience - no BIOS or driver intervention needed for plug/unplug events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar HD Audio codec applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD1988BSTZ | Successor with enhanced ESD rating (±4 kV HBM), improved THD+N (–87 dB), and extended temperature range (–40°C to +85°C). | Targeted at industrial and extended-temp desktop/embedded systems; retains pin compatibility but requires updated firmware for new GPIO mapping. | Select AD1988BSTZ for new designs requiring higher reliability or wider operating temperature; AD1987JCPZ remains valid for cost-sensitive commercial desktops. |
| Realtek ALC889 | Single-chip solution with integrated PCI Express interface; lower DAC DR (94 dB), no dedicated S/PDIF output, and fixed jack assignments. | Used in budget motherboards where HD Audio link integration is handled by southbridge; lacks retasking flexibility and independent S/PDIF path. | Choose ALC889 only if system-level integration (PCIe + codec) is prioritized over audio fidelity and jack flexibility; AD1987JCPZ offers superior SNR and configurability. |
Compared with AD1988BSTZ, AD1987JCPZ trades extended temperature operation and marginally better THD+N for lower unit cost and mature driver support; versus ALC889, it provides true HD Audio link independence, dedicated S/PDIF, and runtime jack retasking - essential for premium desktop audio differentiation.
Availability
AD1987JCPZ is available at Aetrix Electronics and suitable for desktop motherboard design, Vista Premium–certified PC manufacturing, and high-fidelity audio subsystem development requiring stable component supply and long-term lifecycle support.
Supply support for AD1987JCPZ 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, with design centers worldwide and a 50+ year heritage in precision signal conditioning.
The AD1987JCPZ belongs to Analog Devices' SoundMAX® HD Audio codec product line, engineered specifically to exceed Microsoft Vista Premium audio performance requirements while enabling flexible, software-configurable jack layouts for desktop PC platforms.
FAQ
What is the maximum supported sample rate for DAC and ADC operation in AD1987JCPZ?
The AD1987JCPZ supports DAC sample rates up to 192 kHz (eight independent channels) and ADC sample rates up to 96 kHz (four independent channels). Both paths operate at 16-, 20-, or 24-bit PCM resolution. These rates are confirmed in the "SPECIFICATIONS" section (Page 4) and "FEATURES" list of the AD1987 Rev. A datasheet. The AD1987JCPZ achieves this using oversampling digital filters with ±0.005 dB passband ripple and –100 dB stopband rejection.
Does AD1987JCPZ support jack retasking, and how is it implemented?
Yes, AD1987JCPZ fully supports HD Audio jack retasking via its widget-based architecture. All eight ports (A–H) can be dynamically reassigned at runtime using HD Audio verbs - for example, configuring PORT-C as line-in or surround-center, or PORT-E as mic-in or C/LFE output. This is implemented through dedicated HD Audio widgets (Node IDs 11–28) and is validated in Table 1–3 ("JACK CONFIGURATION") and the "HD AUDIO WIDGETS" section (Page 12) of the AD1987JCPZ datasheet.
What are the power supply requirements for AD1987JCPZ, and what happens if AVDD exceeds 3.3 V?
AD1987JCPZ requires three separate supplies: AVDD = 3.3 V ±5% (analog), DVDD = 3.3 V ±10% (digital core), and DVIO = 3.3 V ±10% (I/O interface). The datasheet explicitly warns "CAUTION: DO NOT APPLY 5.0 V TO THESE PINS!" for AVDD (Page 11), and absolute maximum rating is +3.65 V (Page 8). Exceeding 3.46 V risks permanent damage or degraded THD+N performance due to analog front-end saturation.
How does the S/PDIF output function in AD1987JCPZ, and what formats does it support?
The AD1987JCPZ features a dedicated S/PDIF output (Pin 48) supporting 16-/20-/24-bit PCM and AC3 bitstreams at sample rates of 44.1, 48, 88.2, 96, 176.4, and 192 kHz. It operates as a standalone transmitter with its own mixer (Node ID 1D) and does not share resources with the main DAC/ADC paths. This is confirmed in the "FEATURES" list and "S/PDIF OUTPUT" subsection (Page 1) and "HD AUDIO WIDGETS" table (Page 12) of the AD1987JCPZ datasheet.
Is AD1987JCPZ pin-compatible with AD1988BSTZ, and what design changes are needed for migration?
AD1987JCPZ and AD1988BSTZ share identical 48-lead LFCSP_VQ packaging and pinout - including power, ground, I/O, and analog port assignments. However, AD1988BSTZ introduces revised GPIO mapping (e.g., GPIO_1 functionality differs) and updated HD Audio widget parameters. Migration requires firmware/driver updates to accommodate new verb responses and GPIO control logic, though PCB layout remains unchanged.
AD1987JCPZ 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, HD
- Data Interface:
- Serial
- Resolution (Bits):
- 24 b
- Number of ADCs / DACs:
- 4 / 8
- Sigma Delta:
- No
- S/N Ratio, ADCs / DACs (db) Typ:
- -
- Dynamic Range, ADCs / DACs (db) Typ:
- -
- Voltage - Supply, Analog:
- 3.13V ~ 3.46V
- 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)
AD1987JCPZ FAQ
1.How can I place an order for AD1987JCPZ through Aetrix?
Please submit a Request for Quotation (RFQ) for AD1987JCPZ 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 AD1987JCPZ reliable?
The price and inventory of AD1987JCPZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD1987JCPZ is usually 5 days.
3.What payment methods are accepted for AD1987JCPZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD1987JCPZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD1987JCPZ?
AD1987JCPZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD1987JCPZ 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 AD1987JCPZ?
For technical support, including AD1987JCPZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD1987JCPZ requirements.
6.How does Aetrix verify that AD1987JCPZ is sourced from the original manufacturer or authorized distributors?
All AD1987JCPZ 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 AD1987JCPZ meets industry standards.
7.What is the process for return or replacement of AD1987JCPZ?
All AD1987JCPZ units undergo pre-shipment inspection (PSI). If there is an issue with AD1987JCPZ, 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 AD1987JCPZ part is unused and in its original packaging.
Return procedure for AD1987JCPZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD1987JCPZ Tags
-
NAU88C22YG
Nuvoton Technology Corporation
-
TLV320AIC3100IRHBR
Texas Instruments
-
DA7212-01UM2
Renesas
-
NAU8810YG
Nuvoton Technology Corporation
-
DA7218-00U32
Renesas
-
CMX655DQ6-TR1K
CML Micro
-
SGTL5000XNLA3
NXP Semiconductors
-
TLV320AIC3104IRHBR
Texas Instruments
-
MAX9867EWV+T
Analog Devices Inc./Maxim Integrated
-
MAX9860ETG+T
Analog Devices Inc./Maxim Integrated
-
TLV320AIC3106IRGZR
Texas Instruments
-
SGTL5000XNLA3R2
NXP Semiconductors
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
