My Inquiry
My Account
Renesas D2-81435-LR
- Part No.:
- D2-81435-LR
- Manufacturer:
- Renesas
- Category:
- Audio Special Purpose
- Package:
- -
- Datasheet:
-
D2-81435-LR.pdf
- Description:
- IC SOC DGTL AMP CTLR 128LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,709
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
D2-81435-LR from Intersil (now Renesas) is a 4-channel digital amplifier controller SoC in 128-lead LQFP, supporting D2Audio SoundSuite™ and SRS Labs™ TruSurround HD/HD4 audio processing. It integrates configurable DSP, 4-channel I²S/Left-Justified inputs (32–192 kHz, 16–24-bit), optional S/PDIF interface, and digital PWM switching control - deployed in home theater receivers and powered speakers.
For engineers reviewing the D2-81435-LR datasheet, D2-81435-LR pinout, D2-81435-LR application, or D2-81435-LR equivalent, key selection considerations include SRS license dependency, 128-pin LQFP package compatibility, dual SAI receiver support, OTSEL-configurable bridge/non-bridge topology, and firmware-dependent signal flow implementation within licensed Reference Design Platforms.
Technical Context
The D2-81435-LR implements a fully programmable, reference-design-dependent signal flow with independent asynchronous SAI receivers (SCKR0/LRCKR0/SDIN0 and SCKR1/LRCKR1/SDIN1), each supporting sample rates from 32 kHz to 192 kHz. Its integrated DSP provides per-channel equalization, volume/tone control, compression, crossover, and power limiting - all firmware-defined and tied to licensed D2Audio SoundSuite™ and SRS TruSurround HD/HD4 algorithms.
It features four independent PWM output pairs (PWMH0–PWMH3 and PWML0–PWML3), synchronized via PWMSYNC for multi-SoC configurations, with OTSEL selecting active-high or active-low high-side drive polarity. Boot modes include self-boot from serial ROM, SCI slave boot, or host µC serial boot - all configured by BMS0–BMS3 pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | 4-channel digital amplifier controller with independent SAI receivers and PWM outputs |
| Audio Input Support | I²S/Left-justified (32–192 kHz, 16–24-bit) on two SAI ports; optional S/PDIF RX/TX (32–192 kHz) |
| SNR / THD+N | >110 dB SNR, <0.1% THD+N - enables high-fidelity playback in premium audio systems |
| Frequency Response | 20 Hz–20 kHz ±0.5 dB - meets studio-grade flat response requirements |
| Package | 128-lead LQFP (Q128.14x14), RoHS-compliant, Pb-free matte tin termination |
| Operating Temp | –10°C to +85°C ambient - suitable for consumer and industrial audio enclosures |
| Supply Voltages | CVDD = 1.7–1.9 V (core); RVDD/PWMVDD = 3.0–3.6 V (I/O & PWM); PLL/OSC rails = 1.7–1.9 V |
Pinout & Package
128-lead Low Plastic Quad Flatpack (LQFP), Q128.14x14 package, 0.4 mm pitch, exposed thermal pad (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 7, 9, 8 / 12, 14, 13 | SAI Receiver 0 & 1 (SCKR/LRCK/SDIN) | Two independent digital audio input interfaces - enable simultaneous multi-source routing (e.g., HDMI ARC + Bluetooth baseband) |
| 95–94, 91–90, 87–86, 83–82 | PWM Channel 0–3 High/Low Outputs | Direct drive capability for external Class-D half-bridge MOSFETs; 16 mA drive strength supports fast gate charging |
| 65 | OTSEL | Configures PWMHx polarity - determines whether external FETs are driven active-high or active-low without hardware redesign |
| 128, 127 | SCL / SDA | 2-wire interface (I²C-compatible) for register configuration, firmware updates, and real-time status monitoring |
| 55–60 | BMS0–BMS3 | Boot mode select inputs - define startup source (serial ROM, SCI slave, or host µC) at power-on reset |
Key Features
| Feature | Design Value |
|---|---|
| 4-channel SAI with independent sample rate support | Enables concurrent ingestion of disparate audio sources (e.g., 44.1 kHz Bluetooth + 48 kHz HDMI) without external SRC |
| SRS TruSurround HD/HD4 firmware integration | Licensed spatial audio processing - delivers virtual surround sound from stereo content in compact speaker enclosures |
| Configurable per-channel DSP pipeline | Real-time parametric EQ, dynamic compression, and power limiting - optimized for specific speaker drivers and enclosure acoustics |
| Multi-SoC PWM synchronization (PWMSYNC) | Enables precise phase alignment across multiple amplifier channels - critical for subwoofer/woofer/tweeter active crossovers |
| Factory-test reserved pins (SYS0–SYS4) | Supports production calibration and firmware validation without requiring additional test fixtures or board modifications |
Applications
| Home Theater Receiver | Powered Bookshelf Speaker |
|---|---|
Use Scenario: Integrated AV receiver with HDMI audio passthrough, Bluetooth streaming, and multi-zone output. IC Role / Device Role / Timing Role: Digital audio controller managing source routing, SRS spatial processing, and 4-channel PWM generation for front/rear amplification stages. Use Value: Eliminates need for discrete SRC, DSP, and PWM controllers - reduces BOM count and PCB area while enabling licensed TruSurround HD decoding. |
Use Scenario: Compact 2.1 active speaker system with built-in bass management and room correction. IC Role / Device Role / Timing Role: Audio SoC executing crossover filtering, bass boost, and channel-specific power limiting before driving Class-D output stages. Use Value: Enables full digital signal path from input to PWM with <0.1% THD+N and ±0.5 dB flat response - preserving fidelity in space-constrained enclosures. |
| Multi-Room Audio Distribution | Soundbar with Virtual Surround |
Use Scenario: Centralized audio hub distributing synchronized streams to up to four zones with independent volume/EQ. IC Role / Device Role / Timing Role: 4-channel controller with asynchronous SAI receivers and PWMSYNC - ensures sample-accurate inter-zone timing and independent processing per zone. Use Value: Supports simultaneous 48 kHz (streaming) and 44.1 kHz (CD) sources without resampling artifacts - essential for audiophile-grade multi-room systems. |
Use Scenario: Single-bar speaker delivering immersive audio using only left/right drivers and psychoacoustic processing. IC Role / Device Role / Timing Role: SRS-licensed DSP core applying TruSurround HD4 algorithms to stereo input, then generating 4-channel PWM for driver excitation and beamforming. Use Value: Delivers perceptual surround imaging without rear speakers - enabled by real-time FIR filtering and interaural time difference modeling in the D2-81435-LR's firmware. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital audio controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| D2-81431-LR | Same 128-lead LQFP package and core architecture, but supports D2Audio SoundSuite™ only - no SRS TruSurround HD/HD4 licensing. | Applicable where spatial audio processing is not required; lacks SRS algorithm stack and associated license obligations. | Select when cost-sensitive designs require full D2Audio DSP features but exclude SRS IP - avoids NDA/licensing overhead with SRS Labs. |
| D2-81412-LR | 144-lead LQFP package with identical feature set plus Dolby Digital/Dolby Pro Logic II support - requires Dolby Labs licensing instead of SRS. | Targeted at Dolby-certified home theater products; incompatible pinout prevents drop-in replacement. | Choose for Dolby-branded systems needing Dolby decoding - requires redesign for 144-pin layout and separate Dolby licensing agreement. |
Compared with D2-81435-LR, D2-81431-LR offers identical hardware and packaging but omits SRS firmware, reducing licensing complexity; D2-81412-LR adds Dolby support in a larger 144-pin package, demanding PCB revision and different IP compliance - making D2-81435-LR the sole option for SRS-enabled 128-pin designs.
Availability
D2-81435-LR is available at Aetrix Electronics and suitable for home theater receivers, powered speakers, and multi-room audio distribution systems requiring stable component supply, licensed SRS audio processing, and 128-lead LQFP footprint compatibility.
Supply support for D2-81435-LR 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
Renesas Electronics (formerly Intersil) is a global semiconductor leader specializing in analog, mixed-signal, and power management ICs for industrial, automotive, and consumer applications.
The D2-81435-LR belongs to the D2Audio™ D2-814xx family - designed specifically as a fully self-contained digital amplifier controller SoC for Class-D audio system manufacturers seeking rapid time-to-market with licensed audio enhancement algorithms.
FAQ
What audio processing capabilities does the D2-81435-LR support out of the box?
The D2-81435-LR supports D2Audio SoundSuite™ firmware and SRS Labs™ TruSurround HD/HD4 spatial audio processing - including parametric EQ, dynamic compression, crossover filtering, and power limiting. These functions are implemented in firmware and require valid licensing agreements with both D2Audio and SRS Labs prior to purchase or deployment of the D2-81435-LR.
Is the D2-81435-LR pin-compatible with other D2-814xx variants like D2-81431-LR?
Yes, the D2-81435-LR is pin-compatible with D2-81431-LR and D2-81433-LR - all use the identical 128-lead LQFP (Q128.14x14) package and share the same pin definitions, electrical characteristics, and mechanical footprint. However, firmware and licensing differ: D2-81435-LR requires SRS Labs licensing, while D2-81431-LR does not.
Does the D2-81435-LR include an integrated S/PDIF receiver and transmitter?
Yes, the D2-81435-LR includes dedicated SPDIFRX (pin 2) and SPDIFTX (pin 1) pins supporting stereo linear PCM up to 192 kHz. The S/PDIF interface operates at 3.3 V logic levels and requires external line-receiver circuitry for proper cable-level signal conditioning - the D2-81435-LR itself handles protocol decoding and sample rate conversion internally.
How is boot configuration handled on the D2-81435-LR?
Boot mode is selected via BMS0–BMS3 pins (pins 55, 56, 59, 60) at power-on reset. Valid configurations include self-boot from external serial ROM, asynchronous SCI slave boot, or serial slave boot from a host microcontroller. The D2-81435-LR does not execute code until boot mode is latched, ensuring deterministic initialization behavior.
What protection features are implemented in the D2-81435-LR's PWM subsystem?
The D2-81435-LR provides comprehensive PWM protection via PROTECTA0 (thermal status), PROTECTB[3:0] (overcurrent detection), and PROTECTC[3:0] (shoot-through current monitoring). These inputs feed directly into the digital PWM controller, enabling cycle-by-cycle shutdown and graceful recovery - critical for safeguarding external MOSFETs in high-power Class-D amplifier stages.
D2-81435-LR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tray
- Product Status:
- Obsolete
- Function:
- Audio Signal Processor
- Applications:
- Consumer Audio
- Number of Channels:
- 4
- Interface:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -10°C ~ 85°C (TA)
- Specifications:
- Class D
- Mounting Type:
- Surface Mount
- Grade:
- -
D2-81435-LR FAQ
1.How can I place an order for D2-81435-LR through Aetrix?
Please submit a Request for Quotation (RFQ) for D2-81435-LR 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 D2-81435-LR reliable?
The price and inventory of D2-81435-LR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for D2-81435-LR is usually 5 days.
3.What payment methods are accepted for D2-81435-LR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for D2-81435-LR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for D2-81435-LR?
D2-81435-LR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your D2-81435-LR 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 D2-81435-LR?
For technical support, including D2-81435-LR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your D2-81435-LR requirements.
6.How does Aetrix verify that D2-81435-LR is sourced from the original manufacturer or authorized distributors?
All D2-81435-LR 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 D2-81435-LR meets industry standards.
7.What is the process for return or replacement of D2-81435-LR?
All D2-81435-LR units undergo pre-shipment inspection (PSI). If there is an issue with D2-81435-LR, 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 D2-81435-LR part is unused and in its original packaging.
Return procedure for D2-81435-LR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
D2-81435-LR Tags
-
SA571DR2G
onsemi
-
ADAU7002ACBZ-R7
Analog Devices Inc.
-
DRV135UA/2K5
Texas Instruments
-
DRV134UA/1K
Texas Instruments
-
DRV134PA
Texas Instruments
-
DRV134UA
Texas Instruments
-
DRV135UA
Texas Instruments
-
SA572DR2G
onsemi
-
PGA2311U/1K
Texas Instruments
-
SI8244BB-D-IS1R
Skyworks Solutions Inc.
-
CS8416K-CZZR
Cirrus Logic Inc.
-
SRC4392IPFBR
Texas Instruments
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
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…
