S-5855AACA-I4T1U Datasheet, PDF (8/27 Pages) Seiko Instruments Inc – PWM OUTPUT TEMPERATURE SENSOR IC

PWM OUTPUT TEMPERATURE SENSOR IC
S-5855A Series
Rev.1.2_01
2. Product with duty ratio temperature sensitivity Ddt(s) = −1 %/°C
Table 7
(Ta = TSP5, VDD = 3.0 V , VSS = 0 V, CFREQ = 2.2 nF, unless otherwise specified)
Item
Symbol
Condition
Min.
Typ.
Max.
Unit Test circuit
Duty ratio accuracy
Dsp5
VDD = 3.0 V
VDD = 1.65 V to 5.5 V
92.0
95.0
98.0
%
2
91.0
95.0
99.0
%
2
Duty ratio temperature
sensitivity
Ddt(E)^*1
Ta = TSP5^*2,
TEM5^*3
VDD = 3.0 V
VDD = 1.65 V to 5.5 V
−1.2
−1.26
−1.0
−1.0
−0.8
−0.76
%/°C
%/°C
2
2
Oscillation frequency fOSC
Ta = TSP5
VDD = 3.0 V
VDD = 1.65 V to 5.5 V
1950
1860
2300
2300
2650
2780
Hz
Hz
2
2
Ta = TEM5 VDD = 3.0 V
1670
2300
3040
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)
3. Product with duty ratio temperature sensitivity Ddt(s) = −2 %/°C
Table 8
(Ta = TSP5, VDD = 3.0 V , VSS = 0 V, CFREQ = 4.7 nF, unless otherwise specified)
Item
Symbol
Conditions
Min.
Typ.
Max.
Unit Test circuit
Duty ratio accuracy
Dsp5
VDD = 3.0 V
VDD = 1.65 V to 5.5 V
84.0
90.0
96.0
%
2
82.0
90.0
98.0
%
2
Duty ratio
sensitivity
temperature _Ddt(E)*1
Ta =
TEM5^*3
TSP5^*2,
VDD = 3.0 V
VDD = 1.65 V to 5.5 V
−2.4
−2.52
−2.0
−2.0
−1.6
−1.52
%/°C
%/°C
2
2
Oscillation frequency fOSC
Ta = TSP5
VDD = 3.0 V
VDD = 1.65 V to 5.5 V
1840
1750
2160
2160
2740
2600
Hz
Hz
2
2
Ta = TEM5 VDD = 3.0 V
1560
2160
2850
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)
8