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Analog Devices Inc. AD9882KST-140
- Part No.:
- AD9882KST-140
- Manufacturer:
- Analog Devices Inc.
- Category:
- Specialized
- Package:
- 100-LQFP
- Datasheet:
-
AD9882KST-140.pdf
- Description:
- IC INTERFACE/DVI 100MHZ 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:29,906
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Product details
Overview
AD9882KST-140 from Analog Devices is a dual-mode 8-bit video interface IC integrating a 140 MSPS analog RGB ADC and a DVI 1.0-compliant digital receiver with HDCP v1.0 support, optimized for flat-panel display systems. It delivers 300 MHz full-power analog bandwidth, 500 ps p-p PLL jitter at 140 MSPS, and operates from a single 3.3 V supply - enabling SXGA (1280 × 1024 @ 75 Hz) analog capture and SXGA (1280 × 1024 @ 60 Hz) digital reception in LCD monitors and projectors.
For engineers reviewing the AD9882KST-140 datasheet, AD9882KST-140 pinout, AD9882KST-140 application, or AD9882KST-140 equivalent, key selection criteria include dual-interface timing alignment, HDCP authentication capability, intrapair skew tolerance (1 clock cycle), and 100-lead LQFP package compatibility with legacy display controller designs.
Technical Context
The AD9882KST-140 implements two independent signal paths: an analog front-end with triple 8-bit ADCs, programmable clamp/gain/offset, and a PLL generating pixel clocks from HSYNC (12–140 MHz); and a digital DVI receiver with differential RX0±/RX1±/RX2±/RXC± inputs supporting 25–112 MHz data rates and high-skew tolerance. Both paths share output pins (RED[7:0], GREEN[7:0], BLUE[7:0], DATACK, HSOUT, VSOUT) and serial control via 2-wire SDA/SCL.
HDCP v1.0 is fully integrated - enabling authentication, decryption, and key renewability - while sync processing handles composite sync, SOG, and separate HSYNC/VSYNC across both interfaces. The device uses separate power domains (VD for analog core, PVD for PLL, VDD for outputs) to isolate noise-sensitive circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Conversion Rate | 140 MSPS - supports SXGA analog input at 75 Hz refresh without undersampling |
| Analog Bandwidth | 300 MHz full-power - preserves edge integrity for high-resolution RGB graphics signals |
| PLL Jitter | 500 ps p-p at 140 MSPS - ensures stable pixel clock timing for low visual artifacts |
| Digital Interface | DVI 1.0 compliant - enables encrypted digital video reception up to 112 MHz pixel rate |
| HDCP Support | HDCP v1.0 authentication & decryption - required for receiving protected HDMI/DVI content |
| Supply Voltage | VD = 3.15–3.45 V, VDD = 2.2–3.45 V - allows I/O voltage scaling for 2.5 V/3.3 V logic interfacing |
| Intrapair Skew Tolerance | 1 full input clock cycle - accommodates PCB trace length mismatches without external deskew |
Pinout & Package
AD9882KST-140 is housed in a 100-lead LQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant and Pb-free, rated for 0°C to 70°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RAIN, GAIN, BAIN | Analog RGB Inputs | High-impedance 0.5–1.0 Vp-p inputs; ac-coupled for clamp operation; support YPbPr mapping (Y→GAIN, Pb→BAIN, Pr→RAIN) |
| RX0±, RX1±, RX2±, RXC± | Digital Video Differential Inputs | LVDS-compatible DVI data/clock pairs; tolerate ≥360 ps intrapair skew and 1 clock-cycle channel skew |
| RED[7:0], GREEN[7:0], BLUE[7:0] | Parallel Digital Outputs | 3.3 V CMOS, 8-bit per channel; shared between analog and digital modes; MSB-first, 4:2:2 format capable |
| DATACK, HSOUT, VSOUT, DE | Timing & Control Outputs | DATACK is phase-aligned pixel clock; HSOUT/VSOUT are reconstructed syncs; DE indicates active video period |
| SDA, SCL, A0 | 2-Wire Serial Interface | 100 kHz max clock; supports register configuration, HDCP status readback, and interface selection |
| VD, PVD, VDD, GND | Power & Ground | Three isolated supplies: VD (analog core), PVD (PLL), VDD (I/O); mandatory separate bypassing per domain |
Key Features
| Feature | Design Value |
|---|---|
| Dual-Interface Integration | Single-chip replacement for discrete ADC + DVI receiver - reduces BOM count, layout area, and inter-signal skew |
| Full Sync Processing Engine | Hardware-based separation of composite sync/SOG into clean HSOUT/VSOUT - eliminates need for external sync slicers |
| Programmable Clamp & Offset | Adjustable clamping point (45–56% FS) and DC offset per channel - compensates for source-level DC drift in legacy VGA sources |
| HDCP v1.0 Compliance | On-chip authentication, decryption, and key renewal - meets legal requirements for displaying protected HD content |
| Flexible Output Drive | Selectable high/medium/low drive strength on DATACK (28/14/7 mA) and data outputs (11/8/5 mA) - optimizes signal integrity vs. EMI |
Applications
| RGB Graphics Capture | LCD Monitor Input Interface |
|---|---|
Use Scenario: Digitizing analog VGA output from PC graphics cards for display on embedded LCD panels. IC Role / Device Role / Timing Role: Acts as analog front-end ADC with HSYNC-locked PLL clock generation and full sync processing. Use Value: Enables 1280×1024@75Hz capture with <300 MHz analog bandwidth and 500 ps p-p jitter - preserving sharp text and fine detail. |
Use Scenario: Receiving DVI-D video streams from media players or set-top boxes in commercial displays. IC Role / Device Role / Timing Role: Functions as DVI 1.0 receiver with HDCP v1.0 compliance and intrapair skew tolerance. Use Value: Supports hot-plug detection and decrypts protected content without external HDCP controllers - reducing system latency and component count. |
| Plasma Display Controller | Digital Projector Signal Processor |
Use Scenario: Converting analog RGBHV signals from broadcast equipment into digital pixel data for plasma panel driving. IC Role / Device Role / Timing Role: Provides midscale clamping, gain/offset calibration, and 4:2:2 output formatting for YPbPr compatibility. Use Value: Eliminates need for external video amplifiers and level shifters - simplifying analog signal chain and improving SNR (43 dB). |
Use Scenario: Accepting dual-mode video inputs (VGA and DVI) in portable projectors requiring seamless source switching. IC Role / Device Role / Timing Role: Manages interface detection, automatic mode selection, and synchronized DATACK/HSOUT timing across both paths. Use Value: Ensures identical output timing behavior regardless of input source - avoiding frame sync glitches during source transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-interface video receiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9883AKSTZ-140 | Higher 165 MSPS max conversion rate; extended 350 MHz analog bandwidth; same 100-LQFP package and pinout | Supports UXGA (1600×1200@60Hz) analog capture; otherwise identical feature set and HDCP implementation | Choose when higher analog resolution or margin beyond SXGA is required; drop-in compatible with no layout change |
| TI TFP401APZPR | Dedicated DVI receiver only (no analog ADC); 165 MHz max; requires external HDCP engine or TI TFP101 for full compliance | Lacks analog interface entirely; targets digital-only systems with lower BOM cost but higher design complexity for dual-source support | Choose for cost-sensitive digital-only applications where analog input is unnecessary; not a functional substitute for AD9882KST-140's dual-mode capability |
Compared with AD9882KST-140, AD9883AKSTZ-140 extends analog performance headroom while maintaining full pin and firmware compatibility, whereas TFP401APZPR reduces integration by omitting the analog path - making it suitable only for pure digital signal chains without legacy VGA support.
Availability
AD9882KST-140 is available at Aetrix Electronics and suitable for LCD monitor manufacturing, digital projector design, and plasma display controller development requiring stable component supply and long-term industrial availability.
Supply support for AD9882KST-140 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 AD988x family was designed specifically for flat-panel display interface consolidation - merging analog capture, digital DVI reception, and HDCP into one IC to simplify display controller architecture and reduce time-to-market for monitor and projector manufacturers.
FAQ
What is the maximum analog input resolution supported by the AD9882KST-140?
The AD9882KST-140 supports analog RGB capture up to SXGA (1280 × 1024) at 75 Hz, enabled by its 140 MSPS sampling rate and 300 MHz full-power analog bandwidth. This matches the timing requirements of standard VGA and DVI-A sources used in professional and consumer displays. The AD9882KST-140 achieves this without interpolation or oversampling - delivering true 8-bit digitization at native pixel rate.
Does the AD9882KST-140 require external components for PLL operation?
Yes, the AD9882KST-140 requires external passive components connected to the FILT pin (Pin 48) to configure the internal PLL loop filter. The datasheet specifies RC network values based on target pixel clock frequency and jitter requirements. Failure to populate these components results in unstable or inaccurate pixel clock generation. The AD9882KST-140 does not operate correctly with PLL in open-loop mode.
Can the AD9882KST-140 simultaneously process analog and digital video inputs?
No, the AD9882KST-140 operates in either analog or digital mode - not both concurrently. Interface selection is controlled via the 2-wire serial port (Register 0x00, Bit 0). Only one path drives the shared output pins (RED/GREEN/BLUE, DATACK, HSOUT, VSOUT) at a time. Automatic detection is not supported; mode switching requires host MCU intervention and reconfiguration.
What is the role of the RTERM pin on the AD9882KST-140?
The RTERM pin (Pin 28) configures the internal termination resistance for the digital DVI inputs. When pulled high, it enables 50 Ω differential termination on RX0±/RX1±/RX2±/RXC±; when grounded, termination is disabled. This eliminates the need for external 100 Ω resistors across differential pairs - simplifying PCB layout and improving signal integrity for DVI compliance testing. The AD9882KST-140 does not support programmable termination value.
Is the AD9882KST-140 compatible with HDMI sources?
The AD9882KST-140 is DVI 1.0 compliant and electrically compatible with HDMI video sources (since HDMI is electrically identical to DVI-D for video), but it lacks HDMI-specific features like audio transport, CEC, or EDID over HDMI. It can receive and decrypt HDCP-protected video from HDMI sources when used with a passive HDMI-to-DVI adapter, provided the source outputs DVI-style TMDS signaling. The AD9882KST-140 does not process HDMI audio or auxiliary data channels.
AD9882KST-140 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 100-LQFP
- Packaging:
- Tube
- Product Status:
- Obsolete
- Applications:
- Video
- Interface:
- Analog, DVI
- Voltage - Supply:
- 3.15V ~ 3.45V
- Supplier Device Package:
- 100-LQFP (14x14)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
AD9882KST-140 FAQ
1.How can I place an order for AD9882KST-140 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD9882KST-140 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 AD9882KST-140 reliable?
The price and inventory of AD9882KST-140 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD9882KST-140 is usually 5 days.
3.What payment methods are accepted for AD9882KST-140?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD9882KST-140 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD9882KST-140?
AD9882KST-140 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD9882KST-140 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 AD9882KST-140?
For technical support, including AD9882KST-140 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD9882KST-140 requirements.
6.How does Aetrix verify that AD9882KST-140 is sourced from the original manufacturer or authorized distributors?
All AD9882KST-140 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 AD9882KST-140 meets industry standards.
7.What is the process for return or replacement of AD9882KST-140?
All AD9882KST-140 units undergo pre-shipment inspection (PSI). If there is an issue with AD9882KST-140, 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 AD9882KST-140 part is unused and in its original packaging.
Return procedure for AD9882KST-140:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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