Analog Devices Inc. AD9883AKSTZ-110

Overview

AD9883AKSTZ-110 from Analog Devices is an 8-bit, 110 MSPS triple analog-to-digital converter optimized for RGB graphics capture in flat-panel display interfaces. It integrates a 300 MHz full-power analog bandwidth, internal 1.25 V reference, PLL-based pixel clock generation (12–110 MHz), and programmable clamp/gain/offset control. It supports SXGA (1280 × 1024 @ 75 Hz) in LCD monitors and digital projectors with 500 mW typical power dissipation.

For engineers reviewing the AD9883AKSTZ-110 datasheet, AD9883AKSTZ-110 pinout, AD9883AKSTZ-110 application, or AD9883AKSTZ-110 equivalent, this device serves as a complete analog front-end for PC-sourced RGB video - requiring only 3.3 V supply, analog inputs, and HSYNC/COAST signals to deliver synchronized 8-bit parallel RGB data, HSOUT, VSOUT, and SOGOUT outputs.

Technical Context

The AD9883AKSTZ-110 implements three independent 8-bit ADCs with shared PLL clock generation and full sync processing for composite sync and sync-on-green (SOG) signals. Its PLL maintains 110 MHz output with 500 ps p-p jitter at 110 MSPS and sustains frequency during HSYNC dropout via COAST input.

Clamp timing is programmable via internal counter (based on HSYNC trailing edge) or external CLAMP pin; offset and gain are independently adjustable per channel (7-bit offset, 8-bit gain). All digital I/O operates at 3.3 V CMOS levels with 5 V tolerance, and outputs support 2.5–3.3 V VDD for logic compatibility.

Key Specifications

Pinout & Package

AD9883AKSTZ-110 is housed in an 80-lead LQFP (ST-80) package with exposed pad, optimized for thermal performance (θJA = 35°C/W) and surface-mount assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD9883AKSTZ-110, the AD9883AKST-110 offers identical functionality without lead-free compliance, while AD9883ABST-110 trades minor DC accuracy degradation for guaranteed operation across –40°C to +85°C - making it preferable for non-commercial thermal environments.

Availability

AD9883AKSTZ-110 is available at Aetrix Electronics and suitable for LCD monitor manufacturing, digital projector design, and flat-panel display interface development requiring stable component supply and full RoHS compliance.

Supply support for AD9883AKSTZ-110 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, communications, and industrial markets since 1965.

The AD9883A product line was designed specifically as monolithic analog interface ICs for flat-panel display systems - integrating ADCs, PLLs, and sync processing to replace multi-chip video capture solutions in cost- and space-constrained applications.

FAQ

What is the maximum pixel clock frequency supported by the AD9883AKSTZ-110?

The AD9883AKSTZ-110 supports a maximum PLL clock rate of 110 MHz, corresponding to its rated 110 MSPS conversion rate. This enables capture of resolutions up to SXGA (1280 × 1024) at 75 Hz. The minimum PLL clock rate is 12 MHz, allowing flexibility for lower-resolution or interlaced video formats. The PLL jitter remains at 500 ps p-p typical under these conditions.

Does the AD9883AKSTZ-110 support sync-on-green (SOG) input processing?

Yes, the AD9883AKSTZ-110 includes a dedicated SOGIN input and SOGOUT output. The internal high-speed comparator accepts ac-coupled SOG signals and allows programmable threshold adjustment (10–330 mV above negative peak). When enabled, SOGOUT delivers either the sliced sync signal or a delayed version of HSYNC - eliminating the need for external sync separation circuitry in SOG-based systems.

Can the AD9883AKSTZ-110 operate with a 2.5 V digital supply voltage?

Yes, the AD9883AKSTZ-110's VDD pins support 2.5 V to 3.3 V operation, enabling direct interfacing with 2.5 V logic families. The digital outputs (RGB[7:0], DATACK, HSOUT, etc.) maintain valid CMOS levels across this range. However, VD (analog supply) and PVD (PLL supply) must remain at 3.3 V ±10% for specified performance.

How is clamping implemented in the AD9883AKSTZ-110?

The AD9883AKSTZ-110 supports two clamping modes: internal (timing derived from HSYNC trailing edge, configurable via Clamp Placement/Duration registers) and external (triggered by the CLAMP pin). Internal clamping defaults to back-porch timing and requires no external signal. External clamping is activated by setting Clamp Function bit (Register 0FH, Bit 7) and asserting the CLAMP pin during known black intervals.

Is the AD9883AKSTZ-110 pin-compatible with other variants in the AD9883A family?

Yes, all AD9883A variants - including AD9883AKST-110, AD9883AKSTZ-140, and AD9883ABST-110 - share identical 80-lead LQFP (ST-80) packaging and pinout. Differences are limited to temperature grade, lead-free finish, and maximum conversion rate rating; electrical behavior at 110 MSPS is fully consistent across the KSTZ-110, KST-110, and BST-110 variants.