AD7150BRMZ Analog Devices Inc, AD7150BRMZ Datasheet - Page 17

• Manufacturer Part Number: AD7150BRMZ
• Description: IC CAP CONV 2CH ULT LP 10MSOP
• Manufacturer: Analog Devices Inc
• Type: Capacitance-to-Digital Converterr

Specifications of AD7150BRMZ

• Design Resources: Using AD7150 for Proximity Sensing Appls (CN0095)
• Input Type: Voltage
• Output Type: Digital
• Interface: 2-Wire Serial
• Current - Supply: 120µA
• Mounting Type: Surface Mount
• Package / Case: 10-MSOP, Micro10™, 10-uMAX, 10-uSOP
• Resolution (bits): 12bit
• Data Interface: 2-Wire, I2C, Serial
• Supply Voltage Range - Analog: 2.7V To 3.6V
• Supply Current: 100µA
• Digital Ic Case Style: SOP
• No. Of Pins: 10
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: EVAL-AD7150EBZ - BOARD EVAL FOR AD7150
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

TIMEOUT REGISTERS
Ch1 Address Pointer 0x0A
Ch2 Address Pointer 0x0D
8 Bits, Read/Write, Factory Preset 0x86
Table 9. Timeout Register Bit Map
Bit
Mnemonic
Default
These registers set timeouts for the adaptive threshold mode.
The approaching timeout starts when the CDC data crosses the
data average ± sensitivity band toward the threshold, according
to the selected positive, negative, or window threshold mode.
The approaching timeout elapses after the number of conversion
cycles equals 2
most significant bits of the timeout register.
The receding timeout starts when the CDC data crosses the
data average ± sensitivity band away from the threshold,
according to the selected positive or negative threshold mode.
The receding timeout is not used in the window threshold
mode. The receding timeout elapses after the number of
conversion cycles equals 2
value of the four least significant bits of the timeout register.
TimeOutApr
, where TimeOutApr is the value of the four
TimeOutRec
TimeOutApr
Bits [7:4]
, where TimeOutRec is the
0x08
TimeOutRec
Bits [3:0]
0x06
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When either the approaching or receding timeout elapses (that
is, after the defined number of CDC conversions is counted),
the data average (and thus the thresholds) is forced to follow the
new CDC data value immediately.
When the timeout register equals 0, timeouts are disabled.
DATA AVERAGE
DATA AVERAGE
DATA AVERAGE
DATA AVERAGE
+ SENSITIVITY
+ SENSITIVITY
THRESHOLD
THRESHOLD
After a Large Change in CDC Data Away from Threshold
After a Large Change in CDC Data Toward Threshold
Figure 39. Threshold Timeout Approaching
Figure 40. Threshold Timeout Receding
AWAY FROM THE THRESHOLD
LARGE CHANGE IN DATA
TIMEOUT APPROACHING
TIMEOUT RECEDING
LARGE CHANGE IN DATA
TOWARDS THRESHOLD
TIME
TIME
AD7150