Overview
The TSC2046IPWR from Texas Instruments is a next-generation touch screen controller, designed as a successor to the ADS7846. It supports a low-voltage I/O interface ranging from 1.5V to 5.25V, making it highly versatile for various applications. The TSC2046IPWR is 100% pin-compatible with the ADS7846, allowing for seamless upgrades in existing systems. This controller features an internal 2.5V reference, which can be used for auxiliary input, battery monitoring, and temperature measurement. The internal reference can be powered down to conserve power, and it operates down to a 2.7V supply voltage while monitoring battery voltage from 0V to 6V.
The device is optimized for low power consumption, typically less than 0.75mW at 2.7V with the reference off, and supports high-speed sampling rates up to 125kHz. It is available in TSSOP-16, QFN-16, and VFBGA-48 packages and operates over a temperature range of -40°C to +85°C.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Operating Voltage Range | 2.2 | 5.25 | V | |
| Digital I/O Voltage Range | 1.5 | 5.25 | V | |
| Internal Reference Voltage | 2.45 | 2.50 | 2.55 | V |
| Resolution | 12 Bits | |||
| Sample Rate | 125 kHz | |||
| Operating Temperature Range | -40 | +85 | °C | |
| Power Consumption (Typ at 2.7V, reference off) | < 0.75 mW | |||
| Package Types | TSSOP-16, QFN-16, VFBGA-48 |
Key Features
- SAME PINOUT AS ADS7846: Ensures compatibility and easy upgrade from existing ADS7846 applications.
- LOW VOLTAGE OPERATION: Supports operation from 2.2V to 5.25V and digital I/O from 1.5V to 5.25V.
- INTERNAL 2.5V REFERENCE: Can be used for auxiliary input, battery monitoring, and temperature measurement, and can be powered down to conserve power.
- DIRECT BATTERY MEASUREMENT: Monitors battery voltage from 0V to 6V.
- ON-CHIP TEMPERATURE MEASUREMENT: Provides temperature measurement capabilities.
- TOUCH-PRESSURE MEASUREMENT: Supports touch-pressure measurement.
- QSPI™ AND SPI™ 3-WIRE INTERFACE: Supports both QSPI and SPI interfaces for flexible communication.
- AUTO POWER-DOWN: Automatically enters power-down mode to conserve power.
Applications
- PERSONAL DIGITAL ASSISTANTS (PDAs): Ideal for PDAs with resistive touch screens.
- PORTABLE INSTRUMENTS: Suitable for various portable instruments.
- POINT-OF-SALE TERMINALS: Used in point-of-sale terminals.
- PAGERS: Applicable in pager devices.
- TOUCH SCREEN MONITORS: Used in touch screen monitors.
- CELLULAR PHONES: Suitable for cellular phones and other portable equipment.
Q & A
- What is the operating voltage range of the TSC2046IPWR? The operating voltage range is from 2.2V to 5.25V.
- What is the resolution of the TSC2046IPWR? The resolution is 12 bits.
- What are the package types available for the TSC2046IPWR? It is available in TSSOP-16, QFN-16, and VFBGA-48 packages.
- Does the TSC2046IPWR support low power consumption? Yes, it has a typical power consumption of less than 0.75mW at 2.7V with the reference off.
- What interfaces does the TSC2046IPWR support? It supports both QSPI and SPI 3-wire interfaces.
- Can the internal reference of the TSC2046IPWR be powered down? Yes, the internal reference can be powered down to conserve power.
- What is the temperature range for the TSC2046IPWR? The operating temperature range is from -40°C to +85°C.
- Is the TSC2046IPWR compatible with the ADS7846? Yes, it is 100% pin-compatible with the ADS7846.
- What additional measurements can the TSC2046IPWR perform? It can perform direct battery measurement, on-chip temperature measurement, and touch-pressure measurement.
- How does the TSC2046IPWR conserve power? It automatically enters power-down mode when not in use.
