The document introduces the Multiformat SDTV Video Decoder ADV7181B Rev. 0 from Analog Devices, which features support for multiple video formats, integration of three ADCs, adaptive digital line length tracking, and a proprietary architecture for locking to weak, noisy, and unstable video sources.
The ADV7181B is a single‑chip multiformat video decoder that automatically detects and converts NTSC, PAL and SECAM signals from composite, S‑Video and component sources into a digital ITU‑R BT.656 output. It includes three 9‑bit ADCs, a 6‑channel input MUX, and a flexible digital interface suitable for a wide range of applications such as DVD recorders, set‑top boxes, security systems and automotive entertainment.
Key features include adaptive digital line‑length tracking, 5‑line comb filters, integrated AGC with peak‑white mode, macrovision detection, and extensive video‑format support. The device operates from a 3.3 V analog supply and offers both LFCSP and LQFP 64‑lead packages.
| Temperature range | -40°C to +85°C |
|---|---|
| ADC resolution | 9 bits |
| Analog input voltage range | 0.5 V to 1.6 V |
| SNR (Luma ramp) | 54 dB |
| Analog power supply (AVOP) | 3.15 V to 3.45 V |
It supports NTSC (M, J, 4.43), PAL (B/D/G/H/I/M/N) and SECAM formats.
The analog video input range is 0.5 V to 1.6 V peak‑to‑peak.
The analog core operates from a supply of 3.15 V to 3.45 V.