TDA4853; TDA4854 are I2C-bus autosync deflection controllers for PC/TV monitors. They feature full horizontal plus vertical autosync capability, extended horizontal frequency range, comprehensive set of I2C-bus driven geometry adjustments and functions, very good vertical linearity, moire cancellation, start-up and switch-off sequence for safe operation of all power components, X-ray protection, and more.
The TDA4854 is a high‑performance I2C‑bus controlled autosync deflection controller for PC and TV monitors. It provides full horizontal and vertical autosync, TV/VCR mode, and fast settling after mode changes. The TDA4853 is an economy version aimed at 14‑inch and 15‑inch monitors, offering the same core functions except the dynamic focus block.
Both devices are supplied in a 32‑lead SDIP‑32 plastic shrink package and include extensive geometry control, B+ supply management, and video clamping/vertical blanking generation. All functions are programmable via the I2C‑bus, allowing flexible integration into monitor designs.
| Supply voltage (Voc) | 9.2 – 16 V |
|---|---|
| Supply current (typical) | 70 mA |
| Standby supply current | 9 mA |
| Operating ambient temperature | -20 °C to +70 °C |
| Package type | SDIP‑32 plastic shrink dual in‑line package |
The devices operate from 9.2 V up to 16 V supply voltage.
Horizontal sync is received on pin 15 (HSYNC) and vertical sync on pin 14 (VSYNC); both are sliced, integrated, and used to drive the respective oscillators.
Both ICs are supplied in a 32‑lead SDIP‑32 plastic shrink dual‑in‑line package.
Yes, pin 16 (CLBL) provides a two‑level sandcastle pulse for video clamping and vertical blanking, selectable via the I2C‑bus.