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Analog Devices Inc. AD9884KS-100
- Part No.:
- AD9884KS-100
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 128-BQFP
- Datasheet:
-
AD9884KS-100.pdf
- Description:
- TRIPLE ADC, 8-BIT PARALLEL
- Quantity:
- Payment:
- Shipping:
Inventory:1,773
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Product details
Overview
AD9884KS-100 from Analog Devices is an 8-bit, 100 MSPS monolithic graphics digitizer optimized for RGB signal acquisition in PC and workstation video interfaces. It features 500 MHz full-power analog bandwidth, internal +1.25 V reference, programmable gain/offset/clamp control, and on-chip PLL generating pixel clocks from HSYNC/COAST - enabling support for 1280×1024@75Hz displays with minimal external components.
For engineers reviewing the AD9884KS-100 datasheet, AD9884KS-100 pinout, AD9884KS-100 application, or AD9884KS-100 equivalent, this device is selected for high-fidelity analog-to-digital conversion of RGB video signals where precise timing alignment, low power (730 mW typical), and dual-channel parallel or interleaved output modes are required.
Technical Context
The AD9884KS-100 implements three independent 8-bit ADC channels (R/G/B) with fully programmable per-channel gain (0.5–1.0 Vp-p input range) and 6-bit offset control. Its internal PLL accepts 30–90 kHz HSYNC inputs and generates pixel clocks from 20 to 100 MHz with 500 psp-p jitter, maintaining phase alignment between DATACK, DATACK/, and HSOUT outputs.
Clamp generation is configurable via serial port register (internal or external CLAMP input), with programmable placement and duration relative to HSYNC trailing edge. The device supports 2-pixels-per-clock mode via CKINV pin inversion and offers dual-channel output configurations (interleaved or parallel) with 24-bit RGB data routed across six 8-bit CMOS output ports (DRA/DGB/DBB × A/B).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit - sufficient for standard RGB graphics digitization without dithering artifacts at 1280×1024 resolution |
| Max Conversion Rate | 100 MSPS - enables capture of up to 100 million pixels per second, matching common VGA/SVGA/XGA timing requirements |
| Analog Bandwidth | 500 MHz full-power - preserves sharp edges and high-frequency chroma detail in RGB signals up to 1280×1024@75Hz |
| PLL Jitter | 500 psp-p - ensures stable sampling point alignment critical for minimizing color fringing and timing skew in digital display pipelines |
| Power Dissipation | 730 mW typical - allows integration into thermally constrained graphics subsystems without active cooling |
| Digital Output Voltage | 2.5 V to 3.3 V CMOS - compatible with both LVTTL and 3.3 V logic families, supporting direct interface to FPGA or ASIC video processors |
| Reference Output | +1.25 V ±10% - eliminates need for external precision reference, reducing BOM count and layout complexity |
Pinout & Package
Fabricated in a 128-lead MQFP (ST-128) surface-mount plastic package, the AD9884KS-100 uses a space-saving 20.0 mm × 14.0 mm footprint with 0.4 mm lead pitch and exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RAIN, GAIN, BAIN | Analog Inputs (R/G/B) | Accept 0.5–1.0 Vp-p RGB video signals; each channel independently clamped and digitized |
| DRA7–DRA0, DRB7–DRB0 DGA7–DGA0, DGB7–DGB0 DBA7–DBA0, DBB7–DBB0 | Digital Outputs (3×2×8-bit) | Provide parallel RGB data in dual-channel mode (A/B); supports interleaved or parallel readout for FPGA/ASIC synchronization |
| DATACK / DATACK/ | Data Clock Outputs | Differential clock pair aligned to data transitions - used to latch RGB data externally with minimal setup/hold violation risk |
| HSYNC, COAST, CKEXT, FILT | PLL Control Interface | Enable HSYNC-driven clock synthesis, flyback hold (COAST), external clock bypass (CKEXT), and loop filter connection (FILT) |
| SDA, SCL, A0, A1 | Serial Port Interface | Two-wire I²C-compatible bus (400 kHz max) for configuring gain, offset, clamp, PLL dividers, and output modes |
| PWRDN/ | Power-Down Control | Active-low signal placing device in low-current state and tri-stating all digital outputs - essential for dynamic power management |
Key Features
| Feature | Design Value |
|---|---|
| Integrated PLL with COAST hold | Maintains stable pixel clock during vertical blanking intervals without external oscillator - eliminates frame tearing in CRT/LCD scan converters |
| Per-channel programmable gain & offset | 8-bit gain (0–255) and 6-bit offset (0–63) registers enable real-time contrast/brightness correction per RGB channel via serial interface |
| Dual-channel output architecture | Supports simultaneous A/B port output in parallel or interleaved mode - doubles effective throughput or enables time-multiplexed processing in resource-constrained systems |
| 2-pixels-per-clock operation | CKINV pin toggling allows sampling on both rising and falling edges of PXCK - achieves higher resolution at lower clock frequencies, easing PCB routing and EMI control |
| Internal +1.25 V reference | Eliminates need for external voltage reference IC and associated decoupling - reduces component count, board area, and calibration overhead |
Applications
| RGB Graphics Digitization | LCD Monitor Input Processing |
|---|---|
Use Scenario: Capturing analog RGB output from legacy PCs or embedded GPUs for digital display scaling and format conversion. IC Role / Device Role / Timing Role: Primary analog front-end ADC converting R/G/B signals into synchronized 8-bit digital streams with pixel-accurate timing alignment. Use Value: Enables seamless integration of analog video sources into modern digital display controllers while preserving color fidelity and minimizing latency through on-chip PLL and clamp control. |
Use Scenario: Digitizing VGA input for use in industrial LCD monitors requiring stable, low-jitter RGB sampling at resolutions up to 1280×1024. IC Role / Device Role / Timing Role: High-bandwidth graphics digitizer providing parallel RGB data and phase-aligned DATACK/HSOUT signals for direct interface to display timing controllers. Use Value: Reduces system-level jitter and timing uncertainty by generating pixel clock and data strobes internally - improving image stability and eliminating external clock distribution challenges. |
| Plasma Display Panel Controllers | Scan Converter Systems |
Use Scenario: Converting analog RGB video for driving plasma display modules with strict timing and noise immunity requirements. IC Role / Device Role / Timing Role: Precision ADC with 500 MHz analog bandwidth and 500 psp-p PLL jitter delivering clean digital RGB data synchronized to display refresh cycles. Use Value: Ensures accurate pixel replication and color reproduction under fast-changing luminance conditions - critical for maintaining grayscale linearity in PDP applications. |
Use Scenario: Upconverting NTSC/PAL composite or S-video signals to progressive RGB for projection systems or broadcast monitoring. IC Role / Device Role / Timing Role: Core digitization engine accepting conditioned RGB baseband signals and producing time-aligned digital outputs for downstream de-interlacing and scaling. Use Value: Supports flexible input conditioning via programmable clamp, gain, and offset - allowing adaptation to varying source signal levels and DC offsets without hardware changes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar graphics digitizer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9884KS-140 | Higher maximum conversion rate (140 MSPS vs. 100 MSPS); identical pinout, package, and feature set | Required for >100 MHz pixel clock applications (e.g., UXGA 1600×1200@60Hz) | Select AD9884KS-140 only if system requires >100 MSPS sampling; AD9884KS-100 is optimal for cost-sensitive 1280×1024 designs with adequate margin. |
| ADV7123KSTZ140 | Triple 10-bit DAC (not ADC); no PLL, clamp, or serial configuration - functionally complementary rather than substitutable | Used in reverse direction (digital→analog); not suitable as ADC replacement | Not a functional alternative; consider only for system-level redesign involving DAC-based signal generation, not digitization. |
Compared with AD9884KS-140, the AD9884KS-100 trades peak sampling rate for lower power and cost while retaining identical programmability, timing architecture, and interface compatibility - making it ideal for mainstream XGA/SXGA applications. Neither part is functionally replaceable by ADV7123KSTZ140 due to fundamental ADC/DAC role reversal.
Availability
AD9884KS-100 is available at Aetrix Electronics and suitable for RGB graphics digitization, LCD monitor input processing, plasma display panel controllers, and scan converter systems requiring stable component supply, long-term obsolescence planning, and traceable sourcing.
Supply support for AD9884KS-100 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 AD9884 product line was designed specifically for high-fidelity digitization of analog RGB video signals in computer graphics and professional display equipment - emphasizing timing accuracy, low jitter, and integrated system-level functions.
FAQ
What is the maximum supported display resolution for the AD9884KS-100?
The AD9884KS-100 supports display resolutions up to 1280×1024 at 75 Hz, enabled by its 100 MSPS conversion rate and 500 MHz analog bandwidth. This provides sufficient pixel sampling headroom and signal integrity for accurate digitization of high-resolution RGB graphics signals without aliasing or bandwidth-related distortion. The AD9884KS-100 achieves this while maintaining tight timing alignment between DATACK, DATACK/, and HSOUT outputs.
Does the AD9884KS-100 require an external reference voltage?
No, the AD9884KS-100 includes an internal +1.25 V reference with 50 ppm/°C temperature coefficient, eliminating the need for an external reference IC. REFOUT is provided for bypassing with a 0.1 µF capacitor to ground, and REFIN accepts an external +1.25 V ±10% reference if higher precision is required. This integrated reference reduces BOM count and simplifies layout for the AD9884KS-100 in compact graphics subsystems.
How does the COAST function operate in the AD9884KS-100?
The COAST input allows the AD9884KS-100's internal PLL to maintain its output frequency during absence of HSYNC - such as during vertical blanking intervals. When COAST is asserted (active-high, polarity programmable), the PLL sustains pixel clock generation without drift, preventing frame tearing or sync loss. This behavior is confirmed in the Preliminary Technical Data Rev. PrA, where COAST is explicitly defined as enabling "PLL hold" functionality for continuous operation.
Can the AD9884KS-100 be configured for single-channel output mode?
Yes, the AD9884KS-100 supports both single-channel and dual-channel output modes via the Channel Mode bit (bit 7) in the Control register (0xAH). Setting this bit to 0 configures the device for single-channel operation, directing all digitized data to the "A" output ports (DRA/DGA/DBA), while disabling "B" port outputs. This mode reduces FPGA/ASIC pin count and simplifies data capture in bandwidth-limited systems using the AD9884KS-100.
What is the purpose of the CKINV pin on the AD9884KS-100?
The CKINV pin enables 2-pixels-per-clock operation in the AD9884KS-100 by inverting the internal ADC clock on alternate frames. When logic high, it causes sampling on both rising and falling edges of the pixel clock - effectively doubling pixel throughput without increasing clock frequency. This reduces EMI, relaxes PCB routing constraints, and lowers power consumption compared to running the AD9884KS-100 at 200 MHz to achieve equivalent resolution.
AD9884KS-100 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- AD9884
- Package/Case:
- 128-BQFP
- Packaging:
- Bulk
- Product Status:
- Active
- Number of Bits:
- 8
- Sampling Rate (Per Second):
- -
- Number of Inputs:
- 8
- Input Type:
- Single Ended
- Data Interface:
- Serial
- Configuration:
- ADC
- Ratio - S/H:ADC:
- 0:3
- Number of A/D Converters:
- 3
- Architecture:
- Pipelined
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 2.2V, 3V ~ 3.6V
- Voltage - Supply, Digital:
- 2.2V, 3V ~ 3.6V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 128-PQFP (28x28)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD9884KS-100 FAQ
1.How can I place an order for AD9884KS-100 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD9884KS-100 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 AD9884KS-100 reliable?
The price and inventory of AD9884KS-100 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD9884KS-100 is usually 5 days.
3.What payment methods are accepted for AD9884KS-100?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD9884KS-100 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD9884KS-100?
AD9884KS-100 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD9884KS-100 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 AD9884KS-100?
For technical support, including AD9884KS-100 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD9884KS-100 requirements.
6.How does Aetrix verify that AD9884KS-100 is sourced from the original manufacturer or authorized distributors?
All AD9884KS-100 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 AD9884KS-100 meets industry standards.
7.What is the process for return or replacement of AD9884KS-100?
All AD9884KS-100 units undergo pre-shipment inspection (PSI). If there is an issue with AD9884KS-100, 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 AD9884KS-100 part is unused and in its original packaging.
Return procedure for AD9884KS-100:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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