The AD723 is an integrated RGB‑to‑NTSC/PAL encoder that converts analog red, green, and blue video signals into luminance and chrominance outputs for NTSC or PAL televisions. It features active termination, smart load‑detect, and a triple switch for RGB termination, allowing plug‑and‑play operation and low power consumption.
The datasheet provides full electrical specifications, absolute maximum ratings, pin descriptions, and theory of operation. It is supplied in a 28‑lead TSSOP package and is intended for applications such as PC video output, set‑top boxes, digital cameras, and video game consoles.
| Operating Voltage Range | 2.7 V to 5.5 V (single supply) |
|---|---|
| Package | 28‑lead TSSOP |
| Current Consumption (no load) | 16 mA (composite), 19 mA (S‑Video) |
| Luminance Bandwidth (NTSC) | 4.7 MHz (‑3 dB) |
| Chrominance Burst Amplitude (NTSC) | 185 mV‑315 mV p‑p |
| Maximum Output Load | 75 Ω (active termination) |
| Operating Temperature Range | –40 °C to +85 °C |
The AD723 operates from a single supply voltage of 2.7 V to 5.5 V.
The TVDET output pin goes low, signalling that no TV is detected.
Each video output is designed to drive a 75 Ω load with active termination.