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Product Detailed Parameters
- Description：IC SCREEN CNTRL 12BIT 16SSOP
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Touchscreen：4 Wire Resistive
- Resolution (Bits)：12 b
- Interface：SPI
- Voltage Reference：External, Internal
- Voltage - Supply：2.2V ~ 5.25V
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：16-SSOP (0.154", 3.90mm Width)
- Supplier Device Package：16-SSOP
- Current - Supply：500 µA
- Grade：-
- Qualification：-
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Overview
The ADS7846E/2K5 is a four-wire resistive touch screen controller manufactured by Texas Instruments. It integrates a 12-bit analog-to-digital converter (ADC) with a serial interface, supporting sampling rates up to 125 kSPS. The device operates on a supply voltage range of 2.2 V to 5.25 V and features an internal 2.5 V reference that can be disabled for power savings. It supports SPI/QSPI three-wire serial communication and includes automatic power-down modes. The component is housed in a 16-lead SSOP package and functions within a temperature range of -40°C to +85°C.
Feature Summary
- 12-bit resolution ADC with 125 kSPS sampling rate
- Integrated 2.5 V reference voltage source
- SPI/QSPI compatible three-wire serial interface
- Automatic power-down mode with low standby current
Applications
- Personal Digital Assistants (PDA)
- Portable instruments
- Point-of-sale terminals
- Mobile phones
Procurement Notes
Verify the specific suffix /2K5 indicates tape-and-reel packaging containing 2,500 units per reel. Confirm RoHS compliance status and lead-free designation against the latest manufacturer documentation before procurement. Check for end-of-life notifications or discontinuation notices as availability may vary.
Selection Notes
Select this component when a 12-bit resolution is required for resistive touch applications. Ensure the system supports a 2.2 V to 5.25 V supply range. Verify compatibility with the host microcontroller's SPI interface timing requirements. Consider the SSOP-16 package dimensions for PCB layout constraints.
Part Context
This part belongs to the ADS7846 family of touch screen controllers. It serves as a successor to the ADS7843, offering enhanced performance while maintaining pin compatibility. The /2K5 suffix specifically denotes the reel packaging format used for automated assembly processes.
Replacement Considerations
The ADS7846E is pin-compatible with the ADS7843. Other variants in the series include ADS7846EG4 and ADS7846N/2K5, which differ primarily in packaging type such as TSSOP or QFN.
