ADI Touch Panel Test Solution

Overview


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The capacitive touch panel is very popular in consumer electronics like smartphone and tablets etc. Traditional touch Panel test focuses on the functional test which is evaluated by using operator's finger to test directly, not include performance and uniformity test. This solution indicated how to measure touch panel capacitance in the mass productional line and how to identify the defective panel before IC driver assembly. The increasing manufacturing volumes are driving the need for automated test solution which can save a lot of test time and labor cost.




ADI offers:
  • L,C,R measurement theory
  • Automated Solution to reduce manufacture time and cost
  • Combine with ADI signal processing and LTC power products strength

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System Block Diagram


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Product

Product Type DAC/DDS ADC1/ADC2 Switch
Model
AD9834/AD9837/
LTC1667
AD4003/LTC2385-18/
LTC2378-20
ADG1212/ADG1414/
ADG5404
Product Type MCU VREF AMP1/AMP6/AMP7
Model
ADSP-BF70x ADR4540/LTC6655 ADA4807-2/ADA4896-2/AD8132
Product Type AMP2/AMP8 AMP3 AMP4
Model
AD8066/AD8656/
LT1397
AD8251/AD8421 ADA4817-1/ADA4610-1/
ADA4350
Product Type AMP5 DC/DC1 DC/DC2
Model
ADA4350/LTC6912-2 LTM8049/ADP5071 LTM4644
Product Type LDO1/LDO2 LDO3/LDO4
Model
LT3091 LT3080-1

Other

Circuits from the Lab®

    •  CN-0217: High Accuracy Impedance Measurements Using 12-Bit Impedance Converters — analog.com/en/CN0217
    •  CN-0129: Extending the Capacitive Input Range of the AD7745/AD7746 Capacitance-to-Digital Converter — analog.com/en/CN0129
    •  CN-0277: 18-Bit, 5 MSPS, Data Acquisition System Optimized for AC Performance — analog.com/en/CN0277
    •  CN-0385: Isolated, Multichannel Data Acquisition System with PGIA for Single-Ended and Differential Industrial Level Signals — analog.com/en/CN0385

Design Tools/Forums


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