Analog Devices Inc. AD9886KS-140

Overview

AD9886KS-140 from Analog Devices is a monolithic 8-bit triple analog-to-digital converter optimized for RGB graphics signal capture in flat-panel display interfaces, featuring 140 MSPS maximum conversion rate, 330 MHz full-power analog bandwidth, 0.5–1.0 V p-p input range, and integrated PLL-based pixel clock generation with 500 ps p-p jitter at 140 MSPS - enabling SXGA (1280 × 1024 @ 75 Hz) support in PC/workstation-to-FPD systems.

For engineers reviewing the AD9886KS-140 datasheet, AD9886KS-140 pinout, AD9886KS-140 application, or AD9886KS-140 equivalent, this page delivers verified technical context on sync processing, dual-port RGB digitization, clamp control architecture, and 3.3 V power domain partitioning - critical for embedded video front-end design, timing-critical PCB layout, and legacy analog video interface modernization.

Technical Context

The AD9886KS-140 implements three independent 8-bit ADCs with shared PLL-based clock generation, where HSYNC drives a programmable charge-pump PLL to synthesize pixel clocks from 12 MHz to 140 MHz while maintaining phase alignment across DATACK, HSOUT, and VSOUT outputs. Its internal midscale clamp circuitry supports YUV applications via RMIDSCV/GMIDSCV/BMIDSCV outputs and enables external clamp timing via CLAMP pin with EXTCLMP control.

It features dual-output port architecture (Port A/Port B per channel), selectable via DEMUX bit, supporting both single-channel (all data on Port A) and interleaved/parallel dual-channel modes up to 280 Mpps effective sampling via Alternate Pixel Sampling. All configuration-including gain, offset, phase adjustment, and sync polarity-is performed over a 2-wire serial interface (SCL/SDA) with address pins A0/A1.

Key Specifications

Pinout & Package

AD9886KS-140 is housed in a 160-pin Plastic Quad Flatpack (PQFP), S-160 package, with exposed thermal pad for enhanced heat dissipation (θJC = 20°C/W). Power domains are physically segregated: VD (analog core), VDD (digital I/O), and PVD (PLL clock generator) each have dedicated supply pins and ground return paths.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar analog video interface applications.

Compared with AD9887KSZ-140, the AD9886KS-140 trades 2 dB SNR and −25°C operation for lower cost and established qualification; versus THS8135IPHP, it delivers full analog interface integration at 8-bit depth, reducing component count and layout complexity despite lower resolution.

Availability

AD9886KS-140 is available at Aetrix Electronics and suitable for PC graphics capture interfaces, industrial monitor front-ends, HDTV monitor signal conditioning, and video projector signal processors requiring stable component supply and long-term obsolescence management.

Supply support for AD9886KS-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, with deep expertise in precision data conversion and signal conditioning.

The AD9886 belongs to Analog Devices' flat-panel display interface product line, designed specifically to simplify analog video digitization for commercial and industrial display systems - emphasizing integration, timing fidelity, and ease of system-level validation.

FAQ

What is the maximum pixel clock frequency supported by the AD9886KS-140?

The AD9886KS-140 supports a maximum PLL-generated pixel clock frequency of 140 MHz, as confirmed in the "SWITCHING PERFORMANCE" table under "Maximum PLL Clock Rate." This enables full-rate digitization of SXGA (1280 × 1024) at 75 Hz. When using Alternate Pixel Sampling mode with external clock control, the effective sampling capability extends to 280 Mpps, though the AD9886KS-140 itself does not generate clocks above 140 MHz.

Does the AD9886KS-140 support sync-on-green (SOG) input processing?

Yes, the AD9886KS-140 supports SOG input processing via the SOGIN pin, which connects to an internal high-speed comparator with a fixed 0.15 V threshold referenced to the negative peak of the input signal. The resulting digital output appears on SOGOUT and can be used directly or routed through the sync separator block. This function is fully documented in the "PIN FUNCTION DETAIL" section for SOGIN and SOGOUT.

Can the AD9886KS-140 operate without an HSYNC input?

The AD9886KS-140 can operate without HSYNC only in limited configurations: external pixel clock must be supplied via CKEXT, external clamp timing applied via CLAMP pin, and dual-port mode disabled (DEMUX = 0). However, key features - including PLL-based clock generation, internal clamp timing, and full sync processing - become unavailable. The datasheet explicitly recommends providing HSYNC for full functionality.

What are the power supply requirements for the AD9886KS-140?

The AD9886KS-140 requires three independent 3.3 V supplies: VD (analog core, 3.0–3.6 V), VDD (digital I/O, 2.2–3.6 V - supports 2.5 V for logic compatibility), and PVD (PLL domain, 3.0–3.6 V). Each has dedicated pins and must be decoupled locally; the datasheet specifies total power dissipation of 715 mW typical at 140 MSPS, with 13 mA power-down current.

How is the AD9886KS-140 configured and controlled?

The AD9886KS-140 is configured exclusively via its 2-wire serial interface (SCL/SDA) with hardware address pins A0/A1, supporting up to four devices on one bus. All functions - including sampling phase (PHASE register), gain/offset, clamp timing, sync polarity, and port mode (DEMUX) - are controlled through a 16-register map detailed in the "Control Register" section of the datasheet. No parallel programming interface is provided.