SEARCH
— IC芯片 | 连接器 | 传感器 | 被动器件 —
The TSC2046IZQCR-90 is a resistive touch screen controller from Texas Instruments, specified for operation between -40°C and +85°C. It features a 12-bit SAR ADC with a throughput rate of 125 kHz and supports QSPI/SPI 3-wire interfaces. The device operates on a single supply of 2.2V to 5.25V with digital I/O ranging from 1.5V to 5.25V. Key integrated functions include an internal 2.5V reference, direct battery monitoring up to 6V, and on-chip temperature sensing. This specific variant utilizes the VFBGA-48 package (designator ZQC) and includes a high-impedance 90kΩ pull-up resistor on the PENIRQ pin.
Verify the ordering suffix '-90' corresponds to the high-impedance version with the 90kΩ PENIRQ pull-up resistor. Confirm the 'ZQC' package designator matches the required VFBGA-48 footprint. Ensure the industrial temperature range (-40°C to +85°C) meets system requirements. Cross-reference the specific tape and reel quantity if available in current distributor listings.
Select this part when a high-impedance touch panel interface is required to minimize loading effects. The 90kΩ pull-up on PENIRQ differs from the standard 50kΩ version found in other TSC2046 variants. Ensure the host microcontroller supports the required SPI clock speeds and voltage levels compatible with the 1.5V to 5.25V IOVDD range.
The TSC2046 series serves as a low-power successor to the ADS7846, offering enhanced performance in portable devices. The TSC2046IZQCR-90 belongs to the industrial grade subset, distinguished by its VFBGA-48 packaging and specific high-impedance electrical characteristics defined by the '-90' suffix.
Standard TSC2046IZQCR variants utilize a 50kΩ pull-up resistor; verify if the higher impedance of the -90 variant is critical for the specific touch panel application.