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Product Detailed Parameters
- Description：IC SCREEN CNTRL 12BIT 48BGA
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT),Bulk
- Touchscreen：4 Wire Resistive
- Resolution (Bits)：12 b
- Interface：SPI
- Voltage Reference：Internal
- Voltage - Supply：2.2V ~ 5.25V
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：48-VFBGA
- Supplier Device Package：48-BGA MICROSTAR JUNIOR (4x4)
- Current - Supply：780 µA
- Grade：-
- Qualification：-
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Overview
The TSC2046EIZQCT is a low-voltage I/O touch screen controller from Texas Instruments, serving as the next-generation version of the ADS7846. It features a 12-bit successive approximation register (SAR) ADC with a throughput rate of 125 kHz. The device operates on a single supply voltage ranging from 2.2V to 5.25V, with digital I/O levels supporting 1.5V to 5.25V. Key specifications include an internal 2.5V reference, direct battery measurement capability up to 6V, and on-chip temperature sensing. It supports QSPI and SPI 3-wire interfaces and is housed in a VFBGA-48 package.
Feature Summary
- 100% pin-compatible with ADS7846 for easy upgrades
- Low power consumption: < 0.75mW typical at 2.7V
- Internal 2.5V reference with auto power-down
- Exceeds IEC 61000-4-2 ESD requirements (±15kV contact discharge)
Applications
- Personal Digital Assistants (PDAs)
- Portable Instruments
- Point-of-Sale Terminals
- Cellular Phones
Procurement Notes
Verify the specific ordering suffix 'IZQCT' against the manufacturer's current Package Option Addendum, as standard documentation lists 'TSC2046EIZQCR'. Confirm the transport media quantity associated with the 'CT' suffix to ensure alignment with required reel or cut tape specifications.
Selection Notes
Select this component for applications requiring a drop-in replacement for the ADS7846 with enhanced low-voltage I/O support down to 1.5V. Ensure the design accommodates the VFBGA-48 package dimensions and thermal pad requirements. Verify that the system clock frequency aligns with the 125 kHz maximum sample rate specification.
Part Context
The TSC2046E series represents a low-power evolution of the ADS7846 family, designed for battery-operated portable systems. It integrates a 12-bit ADC, multiplexer, and touch panel drivers into a single chip. The device is specified over an industrial temperature range of -40°C to +85°C.
Replacement Considerations
The TSC2046E is a direct pin-compatible replacement for the ADS7846. Designers should verify that the lower IOVDD minimum (1.5V vs 2.7V for ADS7846) does not conflict with existing logic levels.
