TSC2004IYZKR

TSC2004IYZKR is the DSBGA-24 (YZK) wafer-chip-scale code of TI's TSC2004 four-wire resistive touch screen controller, the same silicon as the QFN-20 code already listed in this catalog. It digitises touch position ratiometrically with programmable 10-bit or 12-bit resolution, talks to the host over I2C in standard, fast and high-speed modes, and adds on-chip temperature and touch-pressure measurement, so a controller can report how hard the panel is pressed as well as where. The analog front end runs from a 1.2 V to 3.6 V supply and draws about 760 µW at 1.8 V, with a low-rate equivalent figure of 47 µW at 1.2 V, which keeps it viable in battery handhelds that wake on touch. ESD protection is rated at ±8 kV HBM and ±12 kV contact discharge, and the operating range is -40 °C to +85 °C. Selection advice: choose this YZK code when board area and height dominate — the 24-ball chip-scale package is the high-density handheld option — and choose the QFN RTJ sibling when assembly yield, rework and optical inspection matter more, since DSBGA demands a capable SMT process and X-ray inspection. Parameters verified against Texas Instruments documentation.