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AD7147A Folha de dados(PDF) 21 Page - Analog Devices

Nome de Peças AD7147A
Descrição Electrónicos  CapTouch Programmable Controller
PDF  69 Pages
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Fabricante Electrônico  AD [Analog Devices]
Página de início  http://www.analog.com
Logo AD - Analog Devices

AD7147A Folha de dados(HTML) 21 Page - Analog Devices

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AD7147A
Rev. B | Page 20 of 68
CALIBRATION ENABLED
tRECAL_TIMEOUT
16
30
70
tCONV_FP
MEASURED CDC VALUE > STORED AMBIENT
BY PROXIMITY_RECAL _LVL
RECALIBRATION TIMEOUT
PROXIMITY
DETECTION
(INTERNAL)
CALIBRATION
(INTERNAL)
CDC CONVERSION
SEQUENCE
(INTERNAL)
RECALIBRATION
COUNTER
(INTERNAL)
USER APPROACHES
SENSOR
USER LEAVES
SENSOR AREA
tCALDIS
tRECAL
CALIBRATION DISABLED
NOTES
1. SEQUENCE CONVERSION TIME
tCONV_FP (SEE TABLE 10).
2.
tCALDIS = tCONV_FP × FP_PROXIMITY_CNT × 16.
3.
tRECAL_TIMEOUT = tCONV_FP × FP_PROXIMITY_RECAL.
4.
tRECAL = 2 × tCONV_FP.
Figure 31. Example of Full Power Mode Proximity Detection with Forced Recalibration (FP_PROXIMITY_CNT = 1 and FP_PROXIMITY_RECAL = 40)
CALIBRATION ENABLED
tRECAL_TIMEOUT
16
30
70
tCONV_LP
MEASURED CDC VALUE > STORED AMBIENT
BY PROXIMITY_RECAL _LVL
RECALIBRATION TIMEOUT
PROXIMITY
DETECTION
(INTERNAL)
CALIBRATION
(INTERNAL)
CDC CONVERSION
SEQUENCE
(INTERNAL)
RECALIBRATION
(INTERNAL)
USER APPROACHES
SENSOR
USER LEAVES
SENSOR AREA
tCALDIS
tRECAL
CALIBRATION DISABLED
NOTES
1. SEQUENCE CONVERSION TIME
tCONV_LP = tCONV_FP + LP_CONV_DELAY.
2.
tCALDIS = tCONV_LP × LP_PROXIMITY_CNT × 4.
3.
tRECAL_TIMEOUT = tCONV_LP × LP_PROXIMITY_RECAL.
4.
tRECAL = 2 × tCONV_LP.
Figure 32. Example of Low Power Mode Proximity Detection with Forced Recalibration (LP_PROXIMITY_CNT = 4 and LP_PROXIMITY_RECAL = 40)



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