AD7142 Analog Devices, AD7142 Datasheet - Page 3

• Manufacturer Part Number: AD7142
• Description: Programmable Controller for Capacitance Touch Sensors
• Manufacturer: Analog Devices

Specifications of AD7142

• Resolution (bits): 16bit
• # Chan: 14
• Sample Rate: 250kSPS
• Interface: I²C/Ser 2-Wire,Ser,SPI
• Analog Input Type: Diff-Uni
• Ain Range: ± 2 pF (Delta C)
• Adc Architecture: Sigma-Delta
• Pkg Type: CSP

REVISION HISTORY
1/07—Rev. 0 to Rev. A
Updated Format.................................................................. Universal
Changes to Data Sheet Title.............................................................1
Inserted Figure 5................................................................................8
Changes to Figure 18 ......................................................................12
Changes to Operating Modes Section ..........................................13
Changes to CIN Input Multiplexer Setup Section ......................14
Changes to Table 9 and Conversion Sequencer Section ............15
Changes to Noncontact Proximity Detection Section ...............18
Changes to Recalibration Section and Table 12 ..........................18
Deleted FIFO Control Section.......................................................19
Changes to Figure 31 and Table 13 ...............................................20
Changes to Figure 32 ......................................................................21
Changes to Capacitance Sensor Behavior with
Calibration Section .....................................................................22
Rev. A | Page 3 of 72
Added Slow FIFO and
Changes to Adaptive Threshold and Sensitivity Section ...........24
Inserted Figure 37 and Table 13 ....................................................25
Deleted Figure 42 ............................................................................29
Changes to C
Changes to Figure 55 ......................................................................36
Changes to Power-up Sequence Section ......................................37
Changes to Figure 58 ......................................................................38
Changes to Table 21 ........................................................................42
Changes to Table 24 ........................................................................43
Changes to Table 25 ........................................................................44
Changes to Table 29 ........................................................................48
Changes to Table 31 ........................................................................49
6/06—Revision 0: Initial Version
SLOW_FILTER_UPDATE_LVL Section ...................................23
SHIELD
Output Section ...............................................30
AD7142