ZT2046 Datasheet | ZillTek Technology

FEATURES - 4‐wire resistive touch screen interface - Digital I/O: 1.5V to 5.25V - One auxiliary analog input - Touch pressure measurement - On‐chip reference voltage: 2.5V - Operation voltage: 2.2V to 5.25V - Specified throughput rate: 125 KSPS - Battery voltage measurement: 0 to 6V - Internal temperature sensor: ‐40 to 85°C - Programmable 8‐bit or 12‐bit resolution - Available In QFN package - Ro HS pliant and 100% lead (Pb) free APPLICATIONS - Pagers - Cellular Phones - Portable Instruments - Point‐of‐Sale Terminals - Touch Screen Monitors - Personal Digital Assistants ORDERING INFORMATION PART PACKAGE Ro HS Ship, Quantity ZT2046Q QFN‐16L 4x4 Yes Tape and Reel, 5000 DOUT PENIRQ IOVDD VREF DESCRIPTION The ZT2046 is a 4‐wire touch screen controller with programmable 8‐bit or 12‐bit successive approximation converter, synchronous serial interface and low on‐resistance switches. The ZT2046 operates from 2.2V to 5.25V and fea‐ tures touch pressure measurement, battery measurement, and temperature measurement. The ZT2046 also has an internal 2.5V reference that can be used for the auxiliary analog input, battery voltage detection, and temperature measurement modes. The internal reference can be shut down to save power if not in use. An external reference can also be applied and ranges between 1V and VCC. The auxiliary analog input varies from 0V to reference. The ZT2046 features low power and high speed operation. The power consumption is less than 0.8m W at 2.7V, internal reference off, and 125k Hz sample rate, which makes the de‐ vice ideal for battery powered systems such as cellular phones with resistive touch screens and other portable instruments. The ZT2046 is available in 16‐lead QFN green packages. Pin Configuration VCC XP YP XN Rev. 0.9 ZILLTEK TECHNOLOGY CORP. Absolute Maximum Rating Pin Description Power Dissipation……………………………………………..250m W Digital Inputs to GND………………….- 0.3V to IOVDD + 0.3V Analog Inputs to GND …………………….- 0.3V to VCC + 0.3V VCC...