AD9983A is a high-performance 8-bit display interface chip with 8-bit analog-to-digital converters, low PLL clock jitter, automatic gain matching, automated offset adjustment, 2:1 input multiplexer, dedicated pin or serial register power-down, 4:4:4, 4:2:2 and DDR output format modes, variable output drive strength, odd/even field detection, external clock input, regenerated Hsync output, programmable output high impedance control, Hsyncs per Vsync counter, lead-free package and so on.
This document provides a complete description of the AD9983A 8‑bit, 140 MSPS display interface, including functional block diagrams, specifications, and pinout information. It covers analog and digital input handling, clock generation, sync processing, and power management for HDTV and graphics applications.
Key sections include features, applications, detailed specifications, absolute maximum ratings, pin configuration, theory of operation, and timing diagrams. The datasheet also offers layout recommendations and serial control register maps for system designers.
| Resolution | 8 bits |
|---|---|
| Maximum conversion rate | 140 MSPS |
| Analog input voltage range | 0.5 V p‑p to 1.0 V p‑p |
| Supply voltage (VD) | 1.8 V (typical) |
| Total power dissipation | 800 mW |
| Operating temperature range | 0 °C to 70 °C |
The AD9983A can convert at up to 140 MSPS.
It uses a VD supply of about 1.8 V and a VDD supply up to 3.3 V (typical 1.8 V to 3.3 V).
The device provides six high‑impedance analog input pins for the red, green, and blue channels.
It is supplied in an 80‑lead, Pb‑free LQFP surface‑mount package.