Analog Devices Inc. AD9887KS-100

Overview

AD9887KS-100 from Analog Devices is a dual-interface video analog-to-digital converter for flat panel displays, integrating 140 MSPS triple 8-bit ADCs with DVI 1.0-compatible digital receiver. It supports SXGA (1280×1024@75 Hz) resolution, delivers 330 MHz analog bandwidth, and features 500 ps p-p PLL jitter at 100 MHz operation. Used in LCD monitors and digital TV front-ends for RGB graphics processing.

For engineers reviewing the AD9887KS-100 datasheet, AD9887KS-100 pinout, AD9887KS-100 application, or AD9887KS-100 equivalent, key selection criteria include maximum conversion rate (100 MSPS), analog input range (0.5–1.0 V p-p), PLL clock jitter (≤700 ps p-p), DVI 1.0 compatibility up to 112 MHz, and 160-pin MQFP package thermal performance (θ_JA = 30°C/W).

Technical Context

The AD9887KS-100 implements two independent video acquisition paths: an analog interface with programmable gain/offset/clamp and internal 1.25 V reference, plus a DVI 1.0-compliant digital receiver supporting 1 or 2 pixels/clock modes. Its PLL generates pixel clocks from HSYNC (12–100 MHz) with phase alignment maintained across DATACK, HSOUT, and data outputs.

Full sync processing handles composite sync and sync-on-green inputs; clamp control operates internally or via external CLAMP signal. The 2-wire serial interface configures all analog parameters, sync polarity, and interface selection-enabling seamless switching between analog and digital sources without hardware change.

Key Specifications

Pinout & Package

AD9887KS-100 is housed in a 160-lead plastic quad flatpack (MQFP, package option S-160), thermally optimized for flat panel display applications with θ_JA = 30°C/W on a 4-layer board.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD9887KS-140, the AD9887KS-100 trades 40 MSPS headroom for lower power consumption (215 mA typical vs. 258 mA) and reduced cost, while retaining identical DVI 1.0 compliance, pinout, and feature set-making it ideal for SXGA-class displays where 100 MSPS suffices.

Availability

AD9887KS-100 is available at Aetrix Electronics and suitable for LCD monitor manufacturing, digital TV receiver design, and plasma display panel integration requiring stable component supply and long-term industrial availability.

Supply support for AD9887KS-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 AD9887 product line was designed specifically for flat panel display interface consolidation-enabling single-chip replacement of discrete ADCs, sync processors, and DVI receivers in commercial and consumer display electronics.

FAQ

What is the maximum analog input frequency supported by the AD9887KS-100?

The AD9887KS-100 supports analog input signals with up to 330 MHz full-power analog bandwidth, enabling accurate digitization of high-frequency RGB video components including sharp edges and fine text. This bandwidth directly supports SXGA (1280×1024) resolution at 75 Hz refresh rate. The AD9887KS-100 achieves this while maintaining ≤700 ps p-p PLL jitter at its 100 MSPS maximum conversion rate, ensuring minimal sampling uncertainty.

Does the AD9887KS-100 support both analog and digital video inputs simultaneously?

No-the AD9887KS-100 supports either analog or digital video input at any given time, selected via its 2-wire serial interface configuration. While both interfaces share output pins (e.g., RED A/B, DATACK), only one path is active per operational mode. The AD9887KS-100 does not perform concurrent analog+DVI capture; however, its dual-interface architecture allows rapid source switching in display systems with mixed-input requirements.

What power supply voltages does the AD9887KS-100 require?

The AD9887KS-100 requires three independent supply rails: VD = 3.3 V ±10% for analog circuitry, VDD = 3.3 V or 2.5 V ±5% for digital outputs, and PVD = 3.3 V ±5% for the PLL core. All supplies must be well-decoupled; REFOUT requires a 0.1 µF capacitor to ground. Total typical supply current is 215 mA at 3.3 V, with power-down mode reducing current to 18 mA.

How is sync processing handled in the AD9887KS-100 for composite video sources?

The AD9887KS-100 integrates full sync processing for composite sync and sync-on-green (SOG) inputs. SOGIN accepts ac-coupled green-channel signals and drives SOGOUT via an internal comparator with 0.15 V threshold above negative peak. Horizontal and vertical sync can be extracted from composite inputs or passed through separately. HSOUT and VSOUT are reconstructed and phase-aligned to DATACK, with polarity and duration programmable via serial registers.

Is the AD9887KS-100 pin-compatible with other members of the AD9887 family?

Yes-the AD9887KS-100 is fully pin-compatible with AD9887KS-140, sharing identical 160-lead MQFP (S-160) packaging, pin functions, and electrical characteristics except for maximum conversion rate (100 MSPS vs. 140 MSPS) and associated PLL performance. Both variants use the same footprint, thermal pad layout, and serial configuration register map, allowing drop-in replacement where bandwidth requirements permit.