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AD7872PR, AD7872TQ/883, AD7873

Table of contents:
Info of AD7872PR
Info of AD7872TQ/883
Info of AD7873

AD7872PR, AD7872TQ/883, AD7873 Selling Leads, Datasheet

MFG:AD Package Cooled:SMD16 D/C:96

AD7872PR, AD7872TQ/883, AD7873 Datasheet download

Five Points

Part Number: AD7872PR

MFG: AD

Package Cooled: SMD16

D/C: 96

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AD7873 Parameters

AD7873 Features

4-Wire Touch Screen Interface
On-Chip Temperature Sensor:
–40°C to +85°C
On-Chip 2.5 V Reference
Direct Battery Measurement (0 V to 6 V)
Touch-Pressure Measurement
Specified Throughput Rate
of 125 kSPS

Single Supply, V_CC of 2.2 V to 5.25 V
Ratiometric Conversion
High-Speed Serial Interface
Programmable
8- or 12-Bit Resolution
One Auxiliary Analog Input
Shutdown Mode: 1 µA Max

AD7873 General Description

Touch Screen Digitizer with Direct Battery and Touch-Pressure Measurement

AD7873 Maximum Ratings

Parameter	Rating
+V_CC to GND	0.3 V to +7 V
Analog Input Voltage to GND	0.3 V to V_CC + 0.3 V
Digital Input Voltage to GND	0.3 V to V_CC + 0.3 V
Digital Output Voltage to GND	0.3 V to V_CC + 0.3 V
VREF to GND	0.3 V to V_CC + 0.3 V
Input Current to Any Pin Except Supplies1	±10 mA
Operating Temperature Range
Commercial (A, B Versions)	40to +85
Storage Temperature Range	65to +150
Junction Temperature	150
QSOP, TSSOP, LFCSP Packages, Power Dissipation	450 mW
_JA Thermal Impedance	149.97/W (QSOP) 150.4/W (TSSOP) 135.7/W (LFCSP)
_JC Thermal Impedance	38.8/W (QSOP) 27.6/W(TSSOP)
IR Reflow Soldering
Peak Temperature	220 (±5)
Time-to-Peak Temperature	10 sec to 30 sec
Ramp-Down Rate	6/sec max
Pb-free Parts Only:
Peak Temperture	250
Time-to-Peak Temperature	20 sec to 40 sec
Ramp-Up Rate	3/sec max
Ramp-Down Rate	6/sec max

AD7873 Features

4-Wire Touch Screen Interface
On-Chip Temperature Sensor:
–40°C to +85°C
On-Chip 2.5 V Reference
Direct Battery Measurement (0 V to 6 V)
Touch-Pressure Measurement
Specified Throughput Rate
of 125 kSPS

Single Supply, V_CC of 2.2 V to 5.25 V
Ratiometric Conversion
High-Speed Serial Interface
Programmable
8- or 12-Bit Resolution
One Auxiliary Analog Input
Shutdown Mode: 1 µA Max

AD7873 Typical Application

AD7873: Touch Screen Digitizer Data Sheet

AD7873 Connection Diagram

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