AD7147ACPZ-1500RL7 Analog Devices Inc, AD7147ACPZ-1500RL7 Datasheet - Page 20

• Manufacturer Part Number: AD7147ACPZ-1500RL7
• Description: IC, CDC, 16BIT, 111SPS, LFCSP-24
• Manufacturer: Analog Devices Inc
• Series: CapTouch™r
• Type: Capacitive Sensor Controllerr

Specifications of AD7147ACPZ-1500RL7

• Resolution (bits): 16bit
• Input Channel Type: Single Ended
• Data Interface: Serial, SPI
• Supply Voltage Range - Digital: 1.65V To 3.6V
• Supply Current: 900µA
• Digital Ic Case Style: CSP
• No. Of Pins: 24
• Voltage Supply Source: Single Supply
• Voltage - Supply: 2.6 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 24-LFCSP
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: EVAL-AD7147EBZ - BOARD EVAL FOR AD7147ACPZEVAL-AD7147-1EBZ - BOARD EVAL FOR AD7147ACPZ-1
• Sampling Rate (per Second): -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: AD7147ACPZ-1500RL7TR

AD7147
CDC CONVERSION
CDC CONVERSION
RECALIBRATION
RECALIBRATION
CALIBRATION
CALIBRATION
(INTERNAL)
DETECTION
(INTERNAL)
(INTERNAL)
(INTERNAL)
DETECTION
(INTERNAL)
(INTERNAL)
SEQUENCE
SEQUENCE
PROXIMITY
(INTERNAL)
PROXIMITY
(INTERNAL)
COUNTER
Figure 33. Example of Low Power Mode Proximity Detection with Forced Recalibration (LP_PROXIMITY_CNT = 4 and LP_PROXIMITY_RECAL = 40)
Figure 32. Example of Full Power Mode Proximity Detection with Forced Recalibration (FP_PROXIMITY_CNT = 1 and FP_PROXIMITY_RECAL = 40)
NOTES
1. SEQUENCE CONVERSION TIME
2.
3.
4.
NOTES
1. SEQUENCE CONVERSION TIME
2.
3.
4.
t
t
t
t
t
t
CALDIS
RECAL_TIMEOUT
RECAL
CALDIS
RECAL_TIMEOUT
RECAL
USER APPROACHES
USER APPROACHES
= 2 ×
= 2 ×
=
=
SENSOR
SENSOR
t
t
CONV_FP
CONV_LP
t
t
CONV_FP
CONV_LP
=
=
t
t
CONV_FP
CONV_LP
× FP_PROXIMITY_CNT × 16.
× LP_PROXIMITY_CNT × 4.
CALIBRATION DISABLED
.
CALIBRATION DISABLED
.
SENSOR AREA
SENSOR AREA
USER LEAVES
USER LEAVES
× FP_PROXIMITY_RECAL.
× LP_PROXIMITY_RECAL.
t
t
CONV_FP
CONV_LP
16
16
t
t
CALDIS
CALDIS
=
(SEE TABLE 10).
t
CONV_FP
+ LP_CONV_DELAY.
Rev. B | Page 20 of 72
30
30
MEASURED CDC VALUE > STORED AMBIENT
MEASURED CDC VALUE > STORED AMBIENT
BY PROXIMITY_RECAL _LVL
BY PROXIMITY_RECAL _LVL
RECALIBRATION TIMEOUT
RECALIBRATION TIMEOUT
t
t
RECAL_TIMEOUT
RECAL_TIMEOUT
t
t
RECAL
RECAL
70
70
CALIBRATION ENABLED
CALIBRATION ENABLED
t
t
CONV_FP
CONV_LP