AD9984AKSTZ-140

Overview

The AD9984AKSTZ-140 is a high-performance display interface IC featuring three 10-bit analog-to-digital converters. It supports a maximum conversion rate of 140 MSPS with a full-power analog bandwidth of 300 MHz, enabling capture of HDTV modes up to 1080p and graphics resolutions up to UXGA (1600 × 1200 at 60 Hz). The device operates on a single 1.8 V supply for analog circuits and accepts digital I/O from 1.8 V to 3.3 V. It includes an internal PLL generating sample clocks between 10 MHz and 140 MHz, auto-offset adjustment, and automatic gain matching across channels.

Feature Summary

• Integrates triple 10-bit ADCs with programmable gain, offset, and clamp control for YPbPr video and RGB graphics signal digitization.
• Features an on-chip PLL that generates sampling clocks from tri-level or horizontal sync inputs, maintaining frequency during vertical intervals via coast generation.
• Provides automated calibration functions including channel-to-channel gain matching and offset restoration to minimize signal mismatches.

Applications

• Advanced TVs
• Plasma display panels
• LCDTV
• HDTV
• RGB graphics processing

Procurement Notes

Verify the specific suffix '140' against current manufacturer documentation to confirm the 140 MSPS speed grade, as this variant differs from the 170 MSPS version. Confirm package availability in LQFP-80 format. Check for end-of-life status or obsolescence notices prior to finalizing design-in decisions.

Selection Notes

Select this component when system requirements specify a maximum pixel clock of 140 MHz. Ensure the application can accommodate the 80-lead LQFP package dimensions. Verify that the host logic supports the required 2-wire serial interface for configuration and that power supply constraints align with the specified 1.8 V and 3.3 V rails.

Part Context

The AD9984A series serves as a complete monolithic analog interface for capturing video signals. This specific part number represents the 140 MSPS speed grade within the family, distinguished from higher-speed variants by its maximum conversion rate specification while retaining identical functional blocks and pinout compatibility.

Replacement Considerations

The AD9984AKCPZ-140 is a confirmed commercial temperature grade substitute offering identical electrical performance and pinout compatibility within the same package type.