Datasheet

FS98O22
Rev. 1.6 20/146
2.3. ADC Characteristics (VDD=3V, T
A
=25 , unless otherwise noted)℃
Table 2-3 FS98O22 ADC characteristics
Symbol Paramete
r
Test Conditions Min. Typ. Max. Unit
VACIN ADC Common Mode Input Range
INH,INL,VRH,VRL to
VSS
0.6 0 2.3 V
VADIN ADC Differential Mode Input Range (INH,INL), (VRH,VRL) 0.6 V
Resolution
±
15625 ±31250
1
Counts
ADC Linearity Error VRFIN=0.44V -0.1 0 +0.1 mV
ADC Input Offset Voltage
With Zero Cancellation
VRFIN=0.44V
VAIN=0
0 V
2.4. OPAMP Characteristics (VDD=3V, T
A
=25 , unless otherwise noted)℃
Table 2-4 FS98O22 OPAMP characteristics
Symbol Parameter Test Conditions Min. Typ. Max. Unit
Input Offset 1.5 mV
Input Offset Voltage with Chopper
Rs<100Ω
20
μV
Input Reference Noise
Rs=100Ω, 0.1Hz~1Hz
1.0
μVpp
Input Reference Noise with Chopper
Rs=100Ω, 0.1Hz~1Hz
0.5
μVpp
Input Bias Current 10 30 pA
Input Bias Current with Chopper 100 300 pA
Input Common Mode Range 0.5 2.4 V
Output Voltage Range 0.5 2.4 V
Chopper Clock Frequency S_CHCK[1:0]=11 1k Hz
Capacitor Load 50 100 pF
2.5. Temperature Characteristics(VDD=3V)
VDDA Temperature Coefficient(Average)
3.5800
3.6000
3.6200
3.6400
3.6600
3.6800
3.7000
3.7200
-50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150
Temperature (Deg)
VDDA(V)
VREF Temperature Coefficient(Average)
1.1950
1.2000
1.2050
1.2100
1.2150
1.2200
1.2250
-50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150
Temperature(Deg)
VREF(V)
Figure 2-1 VDDA vs Temp @ VDD=3V Figure 2-2 VREF vs Temp @ VDD=3V
LVR Temperature Coefficient(Average)
1.50
1.75
2.00
2.25
2.50
2.75
12345678910
Temperature(Deg)
LVR(V)
Figure 2-3 LVR vs Temp @ VDD=3V
1
Use ADOH, ADOL and ADOLL (Extra ADC output register) three register (24 bits ADC output)
FORTUNE'
Properties
For Reference Only