參數(shù)資料
型號(hào): MSM62X42BRS
廠商: LAPIS SEMICONDUCTOR CO LTD
元件分類: 時(shí)鐘/數(shù)據(jù)恢復(fù)及定時(shí)提取
英文描述: 1 TIMER(S), REAL TIME CLOCK, PDIP18
封裝: 0.300 INCH, PLASTIC, DIP-18
文件頁(yè)數(shù): 20/28頁(yè)
文件大?。?/td> 219K
代理商: MSM62X42BRS
Semiconductor
MSM62X42B
66
REFERENCE DATA
(1) Frequency vs. Temperature
Frequency temperature characteristics can be
estimated as follows:
Dfx (PPM) = f0T + a(qT – qx)2
Dfx (PPM) : frequency shift at arbitrary
: temperature
f0T (PPM) : frequency shift at qT
a(PPM)
: temperature coefficient
: (–0.035 ppm/
°C2 ± 0.005
: (ppm/
°C2)
qT (
°C)
: turning point temperature
: (25
°C ± 5°C)
qx (
°C)
: arbitrary temperature
11.574 ppm equals to the error of a second/
day.
(2) Current Consumption vs. Supply Voltage
Typical
qT = 25°C
a = –0.035ppm/°C2
–20 –10 0
10 20 30 40 50 60 70
0
–10
–20
–30
–40
–50
–60
–70
Temp. (°C)
Frequency
D
f/f
(ppm)
IDD
[A]
30
25
20
15
10
5
2.0
3.0
4.0
5.0 [V]
CS1 = 0V
at 25°C
Voltage
D fx
[PPM]
2
0
–2
–4
–6
–8
2.0
3.0
4.0
5.0
at 25°C
–10
4
[V]
Voltage
(3) Frequency vs. Supply Voltage
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