O 38,40-JT21G-E-K-3,3-LF 数据手册
Oscillator JT21G · JT21GE · TCXO for GPS
- Temp. Compensated Crystal Oscillator, 2.0 x 1.6 mm
- special type for navigation systems (GPS etc.)
- high stability ±0.5 ppm
- temperature range up to -40 °C ~ +85 °C
- JT21GE with enable/disable function
actual size
RoHS
2011/65/EC
RoHS compliant
Pb free
REACH
compliant
Conflict
mineral free
ENABLE / DISABLE FUNCTION
GENERAL DATA
TYPE
JT21G TCXO / JT21GE with E/D
PIN #1 (E/D CONTROL)
PIN #3 (OUTPUT)
frequency range
26.0 / 38.40 MHz (other frequ. case by case)
open
active
frequency
tolerance/
stability
±2.0 ppm (incl. 2x reflow)
high “1” (VIH ≥ 0.8 VDC)
active
temperature
±0.5 ppm (stability code E)
low “0” (VIL ≤ 0.2 VDC)
high impedance
aging first year
±1 ppm
supply voltage
±0.2 ppm (at VDC ± 5 %)
load change
±0.2 ppm (at 10 KΩ || 10 pF +/-10 %)
stop function (JT21GE only):
– oscillator stops
– output high impedance
– disabled supply current: 2µA typ. / 5.5 µA max.
at +25°C
current consumption
2.0 mA (at 26.0 / 38.40 MHz)
supply voltage VDC
1.8 / 2.5 / 2.8 / 3.0 / 3.3 (±5 %) *
temperature
-30 °C ~ +85 °C (temperature code M)
operating
PACKAGING NOTE
-40 °C ~ +85 °C (temperature code K)
output
storage
-40 °C ~ +85 °C
load nom.
10 KΩ // 10 pF
level min.
0.8 Vpp (clipped sine)
– standard packing unit is 500 pieces per reel
– customized quantities on request
temperature slope max.
0.1 ppm / °C (at max. temp step 2 °C)
NOTE
static frequency hysteresis
(max. frequency difference at
+25 °C, measured before and
after a full cold-hot-cold cycle)
0.6 ppm
start-up time max.
2.5 ms
- JT21G: connect pin #1 to GND / JT21GE: pin #1 is enable/disable
- external AC coupling for output recommended
- for best supply noise rejection, connect a capacitor closely to the
supply voltage pins
- a separate voltage supply rail ensures best phase noise
phase noise
at 100 Hz
-117 dBc/Hz typ.
at ƒo
at 1 KHz
-137 dBc/Hz typ.
26 MHz
at 10 KHz
-149 dBc/Hz typ.
* other nominal supply voltages within 1.8 V ~ 3.3 V need to be specified,
ask for availability
DIMENSIONS
2.0±0.15
#2
#3
1.15
top view
side view
0.85
#4
0.2
#1
TCXO
JT21G
# 1: GND
# 2: GND
# 3: output
# 4: VDC
0.65
0.65
#2
0.35
#1
0.7 ±0.1
#3
1.6 ±0.15
#4
0.45
bottom view
TCXO with e/d
JT21GE
# 1: e/d
# 2: GND
# 3: output
# 4: VDC
0.95
pin connection
pad layout
in mm
ORDER INFORMATION
O
Oscillator
frequency
type
26.0 = 26.0 MHz
38.40 = 38.40 MHz
JT21G
JT21GE
frequency stability
code
operating temp.
code
E = ±0.5 ppm
M = -30 °C ~ +85 °C
K = -40 °C ~ +85 °C
Example: O 26.0-JT21G-E-M-3.3-LF (Suffix LF = RoHS compliant / Pb free)
supply voltage
1.8 = 1.8 V
2.5 = 2.5 V
2.8 = 2.8 V
3.0 = 3.0 V
3.3 = 3.3 V
12112020
Jauch Quartz GmbH • e-mail: info@jauch.com • full data can be found under: www.jauch.com
All specifications are subject to change without notice
Oscillator JT21G · JT21GE · TCXO for GPS
ø 178±2.0
ø 13±0.5
60.5±0.5
2.0±0.1
1.96±0.1
4.0±0.1
8.75 ±0.3
120°
ø 21±0.5
2.35±0.1
3.5±0.05
ø 1.55±0.05
8.0±0.2
4.0±0.1
1.75±0.1
TAPING SPECIFICATION
1.25±0.1
Feeding
in mm
MARKING
REFLOW SOLDERING PROFILE
frequency
company code / stability code / date code
date code: A ~ M: Jan. - Dec.
9: 2019 0: 2020 1: 2021
2: 2022
temperature (°C)
10 s max.
260
3: 2023 4: 2024
200
260 °C max.
220 ±5 °C
180 ±5 °C
150
Jan.
Febr.
Mar.
Apr.
May
June
100
A
B
C
D
E
F
50
July
Aug.
Sept.
Oct.
Nov.
Dec.
G
H
J
K
L
M
60 ~ 180 s
60 s max.
time (s)
note: parts are also suitable for soldering systems with lead (Pb) content
12112020
Jauch Quartz GmbH • e-mail: info@jauch.com • full data can be found under: www.jauch.com
All specifications are subject to change without notice
O 38,40-JT21G-E-K-3,3-LF 价格&库存
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