Analog Devices Inc. AD9983AKSTZ-140

Overview

AD9983AKSTZ-140 from Analog Devices is a monolithic 8-bit, 140 MSPS analog video interface IC designed for digitizing RGB and YPbPr graphics/video signals in display subsystems. It integrates three 8-bit ADCs, a PLL-based pixel clock generator with 32-step phase adjustment, auto-gain/offset calibration, and programmable output formatting (4:4:4, 4:2:2, DDR). It supports HDTV up to 1080i/720p and SXGA (1280×1024@75 Hz) in advanced TVs, LCD monitors, and projectors.

For engineers reviewing the AD9983AKSTZ-140 datasheet, AD9983AKSTZ-140 pinout, AD9983AKSTZ-140 application, or AD9983AKSTZ-140 equivalent, key selection considerations include its 140 MSPS conversion rate, 300 MHz full-power analog bandwidth, tri-level sync/HSYNC PLL lock capability, 3-channel auto-matching, and LQFP-80 package compatibility with 1.8 V/3.3 V mixed-supply systems.

Technical Context

The AD9983AKSTZ-140 implements a triple 8-bit ADC architecture with independent clamp, PGA, and auto-calibration per channel (R/G/B), enabling simultaneous digitization of RGB or YPbPr inputs. Its on-chip PLL accepts tri-level sync (YPbPr) or HSYNC (RGB) and generates a stable 10–140 MHz sample clock with <15 ps/°C sampling phase tempco and low jitter-critical for pixel-accurate timing in high-resolution displays.

Sync processing includes odd/even field detection, regenerated HSOUT/VSOUT, SOG slicing with programmable threshold (8–256 mV), and external CLAMP/COAST/EXTCK support. Output formatting supports 4:4:4 parallel CMOS, 4:2:2, and DDR modes with programmable drive strength and high-impedance control-enabling direct interfacing to FPGA or display controller inputs.

Key Specifications

Pinout & Package

AD9983AKSTZ-140 is housed in an 80-lead Pb-free LQFP (12 mm × 12 mm, 0.5 mm pitch), optimized for thermal dissipation (θJA = 35°C/W) and high-density display interface layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD9983AKSTZ-140, the AD9983AKSTZ-110 offers lower speed and power for cost-sensitive mid-resolution applications, while the ADV7842KBCZ adds HDMI support and higher bit depth at the expense of complexity, footprint, and analog-only simplicity.

Availability

AD9983AKSTZ-140 is available at Aetrix Electronics and suitable for advanced TV manufacturing, LCD monitor production, and HDTV set-top box development requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for AD9983AKSTZ-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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and consumer markets since 1965.

The AD9983A product line delivers highly integrated, low-jitter analog video interface ICs optimized for RGB/YPbPr digitization in flat-panel displays, projectors, and broadcast equipment-designed to replace discrete ADC + PLL + sync processor solutions.

FAQ

What is the maximum supported video resolution for AD9983AKSTZ-140?

AD9983AKSTZ-140 supports all HDTV formats up to 1080i and 720p, plus computer graphics resolutions up to SXGA (1280 × 1024 at 75 Hz), enabled by its 140 MSPS conversion rate and 300 MHz full-power analog bandwidth. The device maintains pixel-level timing accuracy across these modes using its programmable PLL and 32-step phase adjustment.

Does AD9983AKSTZ-140 support both RGB and YPbPr video inputs?

Yes, AD9983AKSTZ-140 natively supports both RGB graphics and YPbPr component video. It uses tri-level sync for YPbPr and HSYNC/VSYNC for RGB, with dedicated SOGIN pins and internal sync processing logic. The same analog input structure (RAIN0/GAIN0/BAIN0) handles either signal type with appropriate clamping and gain settings.

How does the auto-offset and auto-gain matching work in AD9983AKSTZ-140?

AD9983AKSTZ-140 performs automatic offset calibration to restore signal reference levels and eliminate inter-channel DC mismatches, and auto-gain matching to minimize amplitude differences between R/G/B channels. Both features are enabled via serial register control and operate during vertical blanking intervals-requiring no external calibration hardware or firmware intervention.

Can AD9983AKSTZ-140 generate its own pixel clock without an external sync source?

Yes, AD9983AKSTZ-140 includes an on-chip PLL that locks to incoming HSYNC (for RGB) or tri-level sync (for YPbPr) to generate a stable pixel clock from 10 MHz to 140 MHz. With internal coast generation enabled, it maintains frequency and phase continuity even during sync loss-critical for handling vertical intervals in interlaced video.

What package and RoHS status does AD9983AKSTZ-140 use?

AD9983AKSTZ-140 is supplied in an 80-lead Pb-free LQFP package (12 mm × 12 mm, 0.5 mm pitch), fully compliant with RoHS Directive 2011/65/EU. The package supports standard surface-mount assembly processes and provides thermal resistance (θJA) of 35°C/W for reliable operation in display subsystems.