(China (Mainland))
Product Summary
The ADS7846N is a next-generation version to the industry standard ADS7843 4-wire touch screen controller. The ADS7846N is 100% pin-compatible with the existing ADS7843, and drops into the same socket. This allows for easy upgrade of current applications to the new version. Only software changes are required to take advantage of the added features of direct battery measurement, temperature measurement, and touch-pressure measurement. The ADS7846N also has an on-chip 2.5V reference that can be used for the auxiliary input, battery monitor, and temperature measurement modes. The reference can also be powered down when not used to conserve power. The internal reference operates down to 2.7V supply voltage while monitoring the battery voltage from 0V to 6V.
Parametrics
ADS7846N absolute maximum ratings: (1)+VCC to GND: –0.3V to +6V; (2)Analog Inputs to GND: –0.3V to +VCC + 0.3V; (3)Digital Inputs to GND: –0.3V to +VCC + 0.3V; (4)Power Dissipation: 250mW; (5)Maximum Junction Temperature: +150℃; (6)Operating Temperature Range: –40℃ to +85℃; (7)Storage Temperature Range: –65℃ to +150℃; (8)Lead Temperature (soldering, 10s): +300℃.
Features
ADS7846N features: (1)same pinout as ads7843; (2)2.2v to 5.25v operation; (3)internal 2.5v reference; (4)direct battery measurement (0v to 6v); (5)on-chip temperature measurement; (6)touch-pressure measurement; (7)qspitm/spitm 3-wire interface; (8)auto power-down; (9)tssop-16, ssop-16, qfn-16, and vfbga-48 packages.
Diagrams
| Image | Part No | Mfg | Description |  |
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 ADS7846N |
Texas Instruments |
Touch Screen Converters & Controllers 4-wire Touch Screen Controller |
Data Sheet |
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ADS7846N/2K5 |
Texas Instruments |
Touch Screen Converters & Controllers 4-wire Touch Screen Controller |
Data Sheet |
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ADS7846NG4 |
Texas Instruments |
Touch Screen Converters & Controllers 4-wire Touch Screen Controller |
Data Sheet |
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ADS7846N/2K5G4 |
Texas Instruments |
Touch Screen Converters & Controllers 4-wire Touch Screen Controller |
Data Sheet |
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