ISL12020M Datasheet, PDF (9/32 Pages) Intersil Corporation – Low Power RTC with Battery Backed SRAM, Integrated ±5ppm Temperature Compensation and Auto Daylight Saving

ISL12020M
Typical Performance Curves Temperature is +25°C unless otherwise specified. (Continued)
6
4.4
4.2
5
V_BAT = 5.5V
4.0
3.8
4
3.6
3
V_DD = 2.7V
3.4
V_DD = 3.3V
3.2
2-40
-20
0
20
40
60
80
TEMPERATURE (°C)
FIGURE 4. I_DD1 vs TEMPERATURE
3.0
2.7
3.2
3.7
4.2
4.7
5.2
V_DD (V)
FIGURE 5. I_DD1 vs V_DD
5
4
3
2
1
0
-1
-2
-3
-4
-5-40
V_DD = 5.5V
V_DD = 2.7V
V_DD = 3.3V
-20
0
20
40
60
80
TEMPERATURE (°C)
FIGURE 6. OSCILLATOR ERROR vs TEMPERATURE
6
5
VDD = 5.5V
4
V_DD = 3.3V
3
V_DD = 2.7V
2
0.01 0.1
1
10 100 1k 10k 1M
FREQUENCY OUTPUT (Hz)
FIGURE 7. F_OUT vs I_DD
5.5
5.0
F_OUT = 32kHz
4.5
4.0
3.5
F_OUT = 1Hz AND 64Hz
3.0
2.5-40
-20
0
20
40
60
80
TEMPERATURE (°C)
FIGURE 8. I_DD vs TEMPERATURE, 3 DIFFERENT F_OUT
110
100
90
80
V_BAT = 5.5V
70
60
50
V_BAT = 3.0V
40
V_BAT = 1.8V
30
20-40
-20
0
20
40
60
80
TEMPERATURE (°C)
FIGURE 9. I_BAT WITH TSE = 1, BTSE = 1 vs
TEMPERATURE
9
FN6667.4
February 11, 2010