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Texas Instruments DS90UB947TRGCRQ1
- Part No.:
- DS90UB947TRGCRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Serializers, Deserializers
- Package:
- 64-VFQFN Exposed Pad
- Datasheet:
-
DS90UB947TRGCRQ1.pdf
- Description:
- IC SER/DESR 25-170MHZ FPD 64VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,054
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Product details
Overview
DS90UB947TRGCRQ1 from Texas Instruments is an AEC-Q100 Grade 2 automotive-qualified OpenLDI-to-FPD-Link III serializer supporting up to 170 MHz pixel clock, dual-lane 2.975 Gbps/lane serial output, 24-bit RGB video, and embedded I2S audio transport. It bridges LVDS display interfaces to FPD-Link III for infotainment head units and digital instrument clusters.
For engineers reviewing the DS90UB947TRGCRQ1 datasheet, DS90UB947TRGCRQ1 pinout, DS90UB947TRGCRQ1 application, or DS90UB947TRGCRQ1 equivalent, this page delivers verified electrical specs, validated pin functions, confirmed automotive thermal performance (−40°C to +105°C), and real-world implementation constraints including 100-Ω LVDS termination, 33-nF AC coupling on FPD-Link III outputs, and dual-link mode dependency for SPI/GPIO functionality.
Technical Context
The DS90UB947TRGCRQ1 implements a parallel-to-serial conversion architecture with two configurable FPD-Link III output lanes operating at up to 2.975 Gbps per lane or a single lane at up to 3.36 Gbps. It embeds clock recovery, DC-balanced scrambling, and forward-channel payload packing of RGB data, sync signals, I2C, GPIO, and I2S audio into a 35-bit symbol structure.
Its OpenLDI receiver accepts 8 differential data pairs plus CLK± across 18- or 24-bit RGB configurations, with programmable termination and jitter tolerance up to 0.2 UIOLDI. The bidirectional control channel (BCC) enables I2C pass-through and remote interrupt signaling (INTB/REM_INTB) without additional wires.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Video Resolution Support | WUXGA (1920×1200) and 1080p60 at 24-bit color depth - enables high-fidelity automotive displays without frame buffering. |
| FPD-Link III Output Rate | Up to 2.975 Gbps per lane (dual-link) or 3.36 Gbps (single-link) - determines maximum cable length (up to 15 m) and EMI profile. |
| OpenLDI Input Clock Range | 25–170 MHz (dual-link), 25–96 MHz (single-link) - defines supported display timing and pixel throughput. |
| Supply Voltages | VDD11 = 1.1 V ±5%, VDD18 = 1.8 V ±5%, VDDIO = 1.8 V ±5% - requires three independent low-noise LDOs for stable operation. |
| Operating Temperature | −40°C to +105°C (AEC-Q100 Grade 2) - validated for under-hood and dashboard mounting in automotive environments. |
| I²C Interface Speed | 1 Mbps Fast-Mode Plus - supports high-speed configuration and status polling without bus contention. |
| GPIO Forward Channel Rate | Up to 2 Mbps in dual-link mode - enables real-time backlight control or touch feedback over same physical link. |
Pinout & Package
DS90UB947TRGCRQ1 uses a 64-pin VQFN package (9.0 mm × 9.0 mm) with exposed thermal pad (DAP = GND). Pin assignment follows TI's RGC package standard, requiring strict adherence to differential pair routing, 100-Ω LVDS termination, and 33-nF AC coupling on all FPD-Link III outputs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| D0+ to D7+, CLK+ | True LVDS Data/Clock Inputs | Accept OpenLDI video stream; require external 100-Ω differential termination to GND/VDD. |
| D0− to D7−, CLK− | Inverting LVDS Data/Clock Inputs | Paired with true inputs; define differential swing (100–600 mV) and common-mode range (0–2.4 V). |
| DOUT0+, DOUT0−, DOUT1+, DOUT1− | FPD-Link III Serial Outputs | Transmit serialized video/audio/control; must be AC-coupled via 33-nF capacitors to deserializer. |
| SDA, SCL, I2CSEL | I²C Master/Slave Interface | Support 1.8-V or 3.3-V I²C operation; I2CSEL strap selects voltage level at power-up. |
| PDB, INTB, REM_INTB | Power Control & Interrupt Signals | PDB enables hardware power-down (IDDZ ≤15 mA); INTB is open-drain remote interrupt; REM_INTB mirrors remote INTB_IN status. |
Key Features
| Feature | Design Value |
|---|---|
| Backward Compatibility | Interoperates with DS90UB926Q-Q1 and DS90UB928Q-Q1 deserializers - enables legacy system upgrades without redesign. |
| Embedded Audio Transport | Accepts I2S audio (I2S_DA/I2S_DB/I2S_DC/I2S_DD/I2S_WC/I2S_CLK) and encrypts it into FPD-Link III payload - eliminates separate audio cabling. |
| Automatic Cable Compensation | Compensates for temperature drift and aging-induced loss over coaxial or STP cables up to 15 m - maintains eye opening without manual tuning. |
| SPI Pass-Through Mode | Routes SPI commands (MOSI/MISO/SPLK/SS) from host to remote deserializer - enables firmware updates and diagnostics over same link. |
| Multi-Mode GPIO | Provides four high-speed GPIOs (D_GPIO0–D_GPIO3) active only in dual-link mode, plus eight general-purpose GPIOs - supports display control, status reporting, and HMI feedback. |
Applications
| Automotive IVI Head Unit | Rear Seat Entertainment |
|---|---|
Use Scenario: High-resolution graphics processing unit (GPU) drives central infotainment display via LVDS interface in vehicle cockpit. IC Role / Device Role / Timing Role: DS90UB947TRGCRQ1 acts as serializer, converting GPU's OpenLDI output to robust FPD-Link III for transmission over lightweight coaxial cable to display module. Use Value: Reduces interconnect weight by consolidating video, audio, I²C, and GPIO onto two differential pairs while meeting AEC-Q100 Grade 2 thermal requirements. |
Use Scenario: Dual-display rear seat system receives video from media processor and routes synchronized content to two screens. IC Role / Device Role / Timing Role: DS90UB947TRGCRQ1 serializes dual OpenLDI streams into two independent FPD-Link III links, enabling independent resolution and timing per display. Use Value: Supports simultaneous 1080p60 output to both displays using dual-lane mode with 170 MHz pixel clock and embedded audio transport. |
| Digital Instrument Cluster | Automotive Security Camera Display |
Use Scenario: Real-time vehicle telemetry and ADAS alerts rendered on TFT cluster with minimal latency and high reliability. IC Role / Device Role / Timing Role: DS90UB947TRGCRQ1 converts GPU-generated OpenLDI video to FPD-Link III with <294 ns end-to-end latency (tSD), preserving timing-critical HUD overlays. Use Value: Achieves deterministic latency and jitter-controlled transmission (0.3 UIFPD3) essential for safety-critical visual feedback. |
Use Scenario: Rearview camera video routed through vehicle harness to center console display with EMI resilience. IC Role / Device Role / Timing Role: DS90UB947TRGCRQ1 serializes 720p/1080p camera feed over FPD-Link III with automatic cable compensation for long-haul STP runs. Use Value: Maintains signal integrity over 15 m of automotive-grade shielded twisted-pair cable without equalization or repeaters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serializer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DS90UB949TRGCRQ1 | Supports higher 216 MHz pixel clock and 4K-ready dual-lane 4.16 Gbps/lane; adds MIPI DSI input option. | Targeted at next-gen digital clusters and HUDs requiring >1080p resolution. | Select when future-proofing for WQHD or dual 1080p displays; not drop-in due to different register map and pinout. |
| DS90UB925QSQ/NOPB | Single-lane only, max 1.7 Gbps, no I2S audio support, non-automotive grade (commercial temp). | Limited to basic 720p infotainment in non-automotive or cost-sensitive industrial panels. | Choose only for non-automotive applications where AEC-Q100 qualification and audio transport are unnecessary. |
Compared with DS90UB947TRGCRQ1, DS90UB949TRGCRQ1 extends resolution and bandwidth for emerging display formats but increases BOM cost and layout complexity, while DS90UB925QSQ/NOPB sacrifices automotive qualification, audio capability, and dual-link flexibility for lower entry cost in non-safety-critical systems.
Availability
DS90UB947TRGCRQ1 is available at Aetrix Electronics and suitable for automotive infotainment head units, digital instrument clusters, and rear-seat entertainment systems requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for DS90UB947TRGCRQ1 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and automotive ICs, with decades of experience in high-reliability interface solutions.
The DS90UB947TRGCRQ1 belongs to TI's FPD-Link III automotive serializer family, designed specifically to replace bulky LVDS harnesses with lightweight, EMI-robust serial links for next-generation automotive displays.
FAQ
What is the maximum OpenLDI clock frequency supported by DS90UB947TRGCRQ1 in dual-link mode?
The DS90UB947TRGCRQ1 supports up to 170 MHz OpenLDI clock frequency in dual-link mode, enabling WUXGA (1920×1200) and 1080p60 video at 24-bit color depth. This specification is validated across the full −40°C to +105°C operating range and requires proper termination and power sequencing per TI's SNLS454A datasheet.
Does DS90UB947TRGCRQ1 support I2S audio transport, and how is it implemented?
Yes, DS90UB947TRGCRQ1 supports I2S audio transport via dedicated pins (I2S_DA, I2S_DB, I2S_DC, I2S_DD, I2S_WC, I2S_CLK) that accept slave-mode I2S input. Audio data is encrypted and embedded into the FPD-Link III forward channel payload, eliminating the need for separate audio cabling in automotive display systems.
Can DS90UB947TRGCRQ1 operate with 3.3-V I²C signaling?
Yes, DS90UB947TRGCRQ1 supports 3.3-V I²C operation. The I2CSEL pin must be left floating at power-up to configure the SDA and SCL interfaces for 3.3-V tolerant operation; tying I2CSEL to VDDIO selects 1.8-V mode. Both modes support 1-Mbps Fast-Mode Plus timing.
Is SPI functionality available in single-link mode on DS90UB947TRGCRQ1?
No, SPI functionality (MOSI, MISO, SPLK, SS) is only available in dual-link mode on DS90UB947TRGCRQ1, as these pins are shared with D_GPIO0–D_GPIO3. In single-link mode, those pins default to general-purpose GPIO operation and SPI communication is disabled.
What thermal metrics apply to DS90UB947TRGCRQ1 in its VQFN package?
DS90UB947TRGCRQ1 in the 64-pin VQFN package has RθJA = 25.8°C/W, RθJC(bot) = 0.8°C/W, and RθJB = 5.1°C/W. These values assume JEDEC-standard PCB layout with 1-in² 2-oz copper thermal pad and are critical for thermal design validation in automotive under-dash environments where ambient reaches +105°C.
DS90UB947TRGCRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 64-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Serializer
- Data Rate:
- 3.36Gbps
- Input Type:
- LVDS
- Output Type:
- FPD-Link III, LVDS
- Number of Inputs:
- 8
- Number of Outputs:
- 2
- Voltage - Supply:
- 1.71V ~ 1.89V
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 64-VQFN (9x9)
DS90UB947TRGCRQ1 FAQ
1.How can I place an order for DS90UB947TRGCRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for DS90UB947TRGCRQ1 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 DS90UB947TRGCRQ1 reliable?
The price and inventory of DS90UB947TRGCRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS90UB947TRGCRQ1 is usually 5 days.
3.What payment methods are accepted for DS90UB947TRGCRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS90UB947TRGCRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS90UB947TRGCRQ1?
DS90UB947TRGCRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS90UB947TRGCRQ1 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 DS90UB947TRGCRQ1?
For technical support, including DS90UB947TRGCRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS90UB947TRGCRQ1 requirements.
6.How does Aetrix verify that DS90UB947TRGCRQ1 is sourced from the original manufacturer or authorized distributors?
All DS90UB947TRGCRQ1 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 DS90UB947TRGCRQ1 meets industry standards.
7.What is the process for return or replacement of DS90UB947TRGCRQ1?
All DS90UB947TRGCRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with DS90UB947TRGCRQ1, 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 DS90UB947TRGCRQ1 part is unused and in its original packaging.
Return procedure for DS90UB947TRGCRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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