Micro Crystal
Low Power Clock Oscillator 32.768 kHz
OV-7605-C8
June 2017
9/20
Rev. 1.0
OSCILLATOR PARAMETERS
3.5.
For this Table, V
DD
= 3.0 V; GND = 0 V; T
A
= 25 °C; unless otherwise indicated.
Oscillator Parameters:
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNIT
Xtal General
f
Crystal Frequency
32.768
kHz
t
START
Oscillator start-up time
50
500
ms
δ
CLKOUT
CLKOUT duty cycle
40
60
%
Xtal Frequency Characteristics
Δf/f
Frequency accuracy
±10
±20
ppm
Δf/V
Frequency vs. voltage
characteristics
1.6 V ≤ V
DD
≤ 5.5 V
±3
ppm/V
Δf/f
TOPR
Frequency vs. temperature
characteristics
T
OPR
= -40°C to +85°C
V
DD
= 3.0 V
-0.035
ppm
/
°C
2
(T
OPR
-T
0
)
2
±10%
ppm
T
0
Turnover temperature
20
30
°C
Δf/f
Aging first year max.
±3
ppm
XTAL FREQUENCY VS. TEMPERATURE CHARACTERISTICS
3.5.1.
-180
-160
-140
-120
-100
-80
-60
-40
-20
0
20
-50
-40
-30
-20
-10
0
10
20
30
40
50
60
70
80
90
∆
f/
f
[p
p
m
]
T
0
= 25°C (± 5°C)
-0.035 * (T-T
0
)
2
ppm (±10%)
Temperature [°C]
