kHz Range Crystal Devices
Digital Temperature Compensated Crystal Oscillator
Surface Mount Type DTCXO KT3225T Series
×
CMOS/ 3.0V Typ./ 3.2 2.5mm
Features
How to Order
KT3225T 32768 E A W 30 T xx
×
×
• Miniature SMD type (3.2 2.5 1.0mm)
• Built-in 32.768kHz D-TCXO
• High frequency stability : 5.0x10 / 40
①
②
③ ④ ⑤ ⑥ ⑦ ⑧
-
6
-
+
°
to 85 C
Series
Frequency Stability
Output Frequency
② ꢀ
①
③
μ
=
• Low supply current : 1.5 A typ (VDD 3.0V)
• Temperature compensated voltage
Range : 2.0V to 5.5V
Lower Temperature
④
-
-
-
°
40 C
°
30 C
°
20 C
A
No Temp. Compensated
A
C
E
-
6
×
×
D
E
3.8 10
-
6
5.0 10
Applications
• High accuracy time references
• Microcontroller with built in RTC
Upper Temperature
Supply Voltage
⑥
⑤
+
+
+
°
W
T
R
85 C
30
33
50
3.0V
3.3V
5.0V
°
70 C
°
60 C
RoHS Compliant
Initial Frequency
Tolerance
⑦
-
-
6
6
×
×
A
5 5 10
B
0 5 10
T
TCXO
Option Code
⑧
Packaging (Tape & Reel 3000pcs/ reel)
Specifications
Specifications
Item
Symbol
Conditions
Units
Min.
Typ.
Max.
Nominal Frequency
f_nom
VDD
32.768
3.0
kHz
V
―
1.3
―
5.5
Oscillation Output Voltage
Temperature Compensated Voltage
Storage Temperature
Operating Temperature
Frequency Tolerance
Frequency Stability vs Temp.
Frequency Stability vs Supply Voltage
Frequency Aging
Low Level Output Voltage
High Level Output Voltage
Low Level Input Voltage
High Level Input Voltage
DUTY Ratio
VTEM
T_stg
T_use
―
fo-Tc
df/ fo
f_age
2.0
3.0
5.5
V
-
-
+
+
+
+
°
°
10
10
×
10 / V
10
V
40
40
25
25
85
85
C
C
-
6
6
=
°
-
3.0
-
5.0
-
1.0
-
3.0
+
3.0
+
5.0
+
1.0
+
3.0
×
×
Ta 25 2 C
=- + °
E : Ta 40 to 85 C
―
―
―
―
―
―
―
―
―
―
―
―
―
0.6
1.5
―
-
-
6
=
=
°
VDD 2.0 to 5.5V, Ta 25 2 C
-
6
×
IOL=+
IOH=-
=
=
VOL
VOH
VIL
1.0mA, VDD 3V
0.0
2.2
0.0
0.8
3.0
1.0mA, VDD 3V
V
×
0.2 VDD
V
×
VIH
Duty
tr
0.8 VDD
5.5
60
V
=
CL 15pF
40
―
―
―
―
―
―
―
%
→
=
=
Rise Time
Fall Time
20%VDD 80%VDD, CL 15pF, VDD 3V
→ = =
80%VDD 20%VDD, CL 15pF, VDD 3V
100
100
1.0
3.0
2.0
4.0
15.0
nsec
nsec
sec
tf
=
°
Ta 25 C
Start-up Time
t_str
=-
°
Ta 40 to 85 C
sec
=
=
μ
μ
Power Supply Current1
Power Supply Current2
Output Load Condition
ICC1
ICC2
CLKOE VSS
A
A
CLKOE VDD
L_CMOS CMOS Output
pF
Dimensions
(Unit: mm)
Recommended Land Pattern
(Unit: mm)
3.2 0.2
0.55
0.6
0.6
0.55
#8
#7
#6
#5
#4
K
#1
#2
#3
#3
0.45 0.5
#1
#2
#4
#5
Pin No Function
#1
#2
#3
#4
#5
#6
#7
#8
CLKOE
N.C
N.C
VSS
CLKOUT
N.C
N.C
0.4
0.4
0.4
Note: A capacitor of value 0.01µF between VDD
#8
#7
#6
and GND is recommended.
R0.15
VDD
0.4 0.5
0.5