S-5855AACA-I4T1U Datasheet, PDF (9/27 Pages) Seiko Instruments Inc – PWM OUTPUT TEMPERATURE SENSOR IC

Rev.1.2_01
PWM OUTPUT TEMPERATURE SENSOR IC
S-5855A Series
4. Product with duty ratio temperature sensitivity Ddt(s) = −3 %/°C
Table 9
(Ta = TSP5, VDD = 3.0 V , VSS = 0 V, CFREQ = 6.8 nF, unless otherwise specified)
Items
Symbol
Conditions
Min.
Typ.
Max.
Unit Test circuit
Duty ratio accuracy
Dsp5
VDD = 3.0 V
VDD = 1.65 V to 5.5 V
76.0
85.0
94.0
%
2
73.0
85.0
97.0
%
2
Duty ratio
sensitivity
temperature
Ddt(E)^*1
Ta = TSP5^*2, VDD = 3.0 V
TEM5^*3
VDD = 1.65 V to 5.5 V
−3.6
−3.78
−3.0
−3.0
−2.4
−2.28
%/°C
%/°C
2
2
Oscillation frequency fOSC
Ta = TSP5
VDD = 3.0 V
VDD = 1.65 V to 5.5 V
1900
1810
2240
2240
2570
2700
Hz
Hz
2
2
Ta = TEM5 VDD = 3.0 V
1620
2240
2950
Hz
2
*1. Ddt(E): Actual duty ratio temperature sensitivity
*2. TSP5: Temperature 5°C higher than duty ratio change-start temperature TS (Refer to Table 12 for details)
*3. TEm5: Higher temperature when measuring duty ratio temperature sensitivity (Refer to Table 12 for details)
5. Product with duty ratio temperature sensitivity Ddt(s) = −4 %/°C
Table 10
(Ta = TSP5, VDD = 3.0 V , VSS = 0 V, CFREQ = 10 nF, unless otherwise specified)
Items
Symbol
Conditions
Min.
Typ.
Max.
Unit Test circuit
Duty ratio accuracy
Dsp5
VDD = 3.0 V
VDD = 1.65 V to 5.5 V
68.0
80.0
92.0
%
2
64.0
80.0
96.0
%
2
Duty ratio
sensitivity
temperature _Ddt(E)*1
Ta = TSP5^*2, VDD = 3.0 V
TEM5^*3
VDD = 1.65 V to 5.5 V
−4.8
−5.05
−4.0
−4.0
−3.2
−3.04
%/°C
%/°C
2
2
Oscillation frequency fOSC
Ta = TSP5
VDD = 3.0 V
VDD = 1.65 V to 5.5 V
1730
1640
2030
2030
2330
2440
Hz
Hz
2
2
Ta = TEM5 VDD = 3.0 V
1470
2030
2680
Hz
2
*1. Ddt(E): Actual duty ratio temperature sensitivity
*2. TSP5: Temperature 5°C higher than duty ratio change-start temperature TS (Refer to Table 12 for details)
*3. TEM5: Higher temperature when measuring duty ratio temperature sensitivity (Refer to Table 12 for details)
9