DA6512.003
2 December, 2016
ELECTRICAL CHARACTERISTICS
Operating Conditions: VDD = 2.7 V, TA = -40°C to +85°C, typical values at TA = +27°C, unless otherwise specified.
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Internal offset capacitor
matrix selection
Changing sensor
capacitance range in
capacitance difference
mode
Maximum allowed
sensor capacitance in
capacitance difference
mode
CR_OS, CS_OS
COS_STEP
CDIFF
0
22
pF
0.086
Normal clock (SOSC=00)
Division by 2 (SOSC=01)
Division by 4 (SOSC=10)
Division by 8 (SOSC=11)
Normal clock (SOSC=00)
Division by 2 (SOSC=01)
Division by 4 (SOSC=10)
Division by 8 (SOSC=11)
Note 1
2
2
2
2
20
30
30
30
20
40
80
160
pF
pF
CS_MAX_DIFF
Changing sensor
Note 2
2
20
20
pF
pF
°C
CRATIO
capacitance range in
capacitance ratio mode
Maximum allowed
sensor capacitance in
capacitance ratio mode
Internal temperature
sensor
CS_MAX_RATIO
Note 2
Linearity
Gain
Note 3
±0.4
OSR=2048
OSR=1024
OSR=512
65038
65002
8116
LSB/
°C
OSR=256
1012
Non-calibrated, note 3
-4.5
-12
+3.5
+17
%
Offset
Non-calibrated, note 3
°C
RMS temperature
resolution
RMS voltage resolution
Temp mode,
TEMPREGEN=1, OSR=256
VDD level monitoring
TEMPREGEN=0
OSR=2048
0.034
°C
72
77
82
99
VRMS
OSR=1024
OSR=512
OSR=256
Note 4
Note 1. In capacitance difference mode the maximum allowed sensor and reference capacitor values can be extended using lower external
oscillator frequency than which is available by SOSC division options; CS_MAX=20pF*200kHz/f OSC_EXT
.
Note 2. In capacitance ratio mode also larger capacitances are possible depending on sensor characteristics. Please contact Micro Analog
Systems to check sensor suitability.
Note 3. Guaranteed by design. By first order calibration of offset and gain errors an overall temperature accuracy close to the linearity
accuracy can be achieved. Further accuracy can be achieved by second order calibration to reduce non-linearity errors. Minimum and
maximum values of temperature sensor gain and offset are guaranteed by design.
Note 4. In case of noisy power supply the VDD level monitoring resolution can be further limited by supply noise.
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MAS [ MICRO ANALOG SYSTEMS ]
