ASTXR-12-26.000MHz-512545

SMD TCXO
ASTXR-12-26.000MHz-512545
ESD Sensitive
Pb
RoHS / RoHS II Compliant
Moisture Sensitivity Level (MSL) – 1
2.5 x 2.0 x 0.8mm SMD
OVERVIEW:
Abracon’s ASTXR series of Temperature Compensated Crystal Oscillators are based on an Advanced-Analog Temperature Compensation
Integrated Circuit, incorporated with Rakon’s Precision TCXO processing techniques.
This composite enables exceptional frequency stability over temperature (≤±0.50 ppm over -40°C to +85°C). Additionally, high-resolution
screening algorithms are employed during the production verification process, ensuring that 100% of these devices are fully compliant to the
stringent frequency stability specifications.
For Power Sensitive applications, the ASTXR series provides the ability to preserve consumed power by placing the device in shut-down mode;
when not used. This series of devices are ideally suited for GPS and other mobile applications where performance, size, cost and power
management are of critical importance.
FEATURES:
APPLICATIONS:
• GPS
• Excellent phase noise performance
• Smartphone
• Low power consumption
• PND
• Miniature size: 2.5 x 2.0 x 0.8mm SMD
• Communications
• RoHS compliant
• Consumer electronics
• Temperature stability: ±0.5ppm over -40 ~ +85°C
• Wi-Fi
• WiMAX/W-LAN
STANDARD SPECIFICATIONS:
Parameters
Nominal Frequency
Supply Voltage (Vdd)
Current Consumption (@Vdd max)
Operable Temperature Range
Storage Temperature Range
Initial Frequency Tolerance
@+25°C±2°C at time of shipment
Minimum
Typical
1.71
26.000
1.8
Maximum
Units
-40
1.89
1.5
+85
MHz
V
mA
ºC
-40
+85
ºC
±1
ppm
±1
ppm
±0.5
ppm
0.1
ppm/°C
0.6
ppm
±0.1
ppm
±0.2
ppm
±2
ppm
Reflow Shift
Frequency Stability over Operating
Temperature Range
Frequency Slope
(tested to a minimum of 1 freq. reading
every 2°C over operating temperature
range)
Static Temperature Hysteresis
(Frequency change after reciprocal
temperature ramped over the operating
range. Frequency measured before and
after at +25°C)
Sensitivity vs. Supply Voltage
Variations (Vdd±5% @ +25°C)
Sensitivity vs. Load Variations (±10%
load change @ +25°C)
Long Term Stability (frequency drift
over 1 year @ +25°C)
500
Frequency Drift on Power up
40
V
9.5
10
10.5
kΩ
10
10.5
pF
Startup Time (amplitude)
0.5
ms
Startup Time (frequency)
2
ms
ABRACON IS
ISO9001:2008
CE RTIFIED
See Note 1, 4
See Note 4
See Note 4
Drift period: 1.0 to 2.0 seconds
See Note 7
9.5
Output Load Capacitance
After 2 consecutive reflows
and 1hr recovery@+25°C
Ref. to (FMAX+FMIN)/2.
See Note 1, 2
Drift period: 2.0 to 3.0 seconds
DC Coupled Clipped Sine-wave
0.8
See Note 5
See Note 6
Drift period: 0.03 to 1.0 second
ppb/s
2.5
Output Type
Output Voltage Level
(@ minimum Vdd)
Output Load Resistance
Notes
See Note 6
90% of specified output
level
Within ±0.5ppm of steady
state frequency
Visit www.abracon.com for Terms & Conditions of Sale
Revised: 07.11.14
30332 Esperanza, Rancho Santa Margarita, California 92688
tel 949-546-8000 | fax 949-546-8001 | www.abracon.com
SMD TCXO
ASTXR-12-26.000MHz-512545
Parameters
Enable/Disable Function (Pin 2)
Input Voltage High (VIH)
Input Voltage Low (VIL)
Pb
Minimum
90%*Vdd
GND
Enable Time (frequency)
Power Down Delay
Temperature Sensor
Output Voltage @ +25°C
Slope for – 30 to +85°C
Load Resistance
Load Capacitance
@1Hz
Noise
@10Hz
@100Hz
Output Impedance @ +25°C
Linearity over operating
temperature range
Phase Noise @ 26MHz Carrier
(@+25°C)
@ 1
Hz offset
@ 10
Hz offset
@ 100
Hz offset
@ 1,000
Hz offset
@ 10,000
Hz offset
@ 100,000 Hz offset
Typical
0.75
-8.5
100
Maximum
Units
Vdd
10%*Vdd
V
V
1.5
ms
2.5~10
ms
-8.33
0.85
-8.1
30
1.0
0.33
0.15
1.5
V
mV/°C
kΩ
pF
µV/√Hz
µV/√Hz
µV/√Hz
kΩ
0.2
%
-67
-92
-115
-135
-148
-151
dBc / Hz
dBc / Hz
dBc / Hz
dBc / Hz
dBc / Hz
dBc / Hz
RoHS / RoHS II Compliant
2.5 x 2.0 x 0.8mm SMD
Notes
Normal operating Mode
Power Down Mode
Within ±0.5ppm of steady
state frequency
Delay prior to oscillator
power down
Sensor output and reference
voltage pin. See Note 8
Note:
1. A maximum frequency stability over the temperature is required to be specified. Standard options are ±0.5ppm,
±1.0ppm, ±1.5ppm, and ±2.5ppm.
2. Parts should be shielded from drafts causing unexpected thermal gradients. Temperature changes due to ambient
air currents on the oscillator can lead to short term frequency drift.
3. The operating temperature range needs to be specified. The extremes for this model are -40 and +85° C.
4. The maximum value is the specification. A minimum value, if present indicates the best specification available.
5. The unit will operate on any voltage between minimum and maximum values.
6. Specified for load stated in the Oscillator Output section at +25° C.
7. External AC-Coupling capacitor required. ≥ 1nF is recommended.
8. The recommended load resistance is ≥ 100kΩ. The load capacitance must be minimized for optional
performance.
REFERENCE DESIGN INFORMATION:
ASTXR-12-26.000MHZ-512545 is equivalent to Rakon P/N 512545.
ABRACON IS
ISO9001:2008
CE RTIFIED
Visit www.abracon.com for Terms & Conditions of Sale
Revised: 07.11.14
30332 Esperanza, Rancho Santa Margarita, California 92688
tel 949-546-8000 | fax 949-546-8001 | www.abracon.com
SMD TCXO
ASTXR-12-26.000MHz-512545
Pb
RoHS / RoHS II Compliant
2.5 x 2.0 x 0.8mm SMD
PART IDENTIFICATIONS:
ASTXR-12-26.000MHz -512545 Packing
Blank: Bulk
T: Tape & Reel (3k/reel)
OUTLINE DIMENSION:
Recommended Land Pattern
Pin
1
2
3
4
5
6
Function
GND
Enable/Disable
GND
Output
Temp. Sensor
Vdd
Dimensions: mm
REFLOW PROFILE:
ABRACON IS
ISO9001:2008
CE RTIFIED
Visit www.abracon.com for Terms & Conditions of Sale
Revised: 07.11.14
30332 Esperanza, Rancho Santa Margarita, California 92688
tel 949-546-8000 | fax 949-546-8001 | www.abracon.com
SMD TCXO
ASTXR-12-26.000MHz-512545
Pb
RoHS / RoHS II Compliant
2.5 x 2.0 x 0.8mm SMD
TAPE & REEL:
3000pcs/reel
Dimensions: mm
ATTENTION: Abracon Corporation’s products are COTS – Commercial-Off-The-Shelf products; suitable for Commercial, Industrial and, where designated, Automotive
Applications. Abracon’s products are not specifically designed for Military, Aviation, Aerospace, Life-dependant Medical applications or any application requiring high
reliability where component failure could result in loss of life and/or property. For applications requiring high reliability and/or presenting an extreme operating environment, written consent and authorization from Abracon Corporation is required. Please contact Abracon Corporation for more information.
ABRACON IS
ISO9001:2008
CE RTIFIED
Visit www.abracon.com for Terms & Conditions of Sale
Revised: 07.11.14
30332 Esperanza, Rancho Santa Margarita, California 92688
tel 949-546-8000 | fax 949-546-8001 | www.abracon.com
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