325 4
6 7 8 9 10
.500
(13.46)
.250
(6.35)
.030
(0.76)
.750
(19.06)
1.000
(25.40)
.750
(19.06)
1
.250
(6.35)
.500
(12.70)
1.000
(25.40)
.025
(.65)
Stand off
4 places
max
Sq.
Q-TECH
QT2010
75.000MHz
D/C S/N
1
Q-TECH Corporation - 10150 W. Jefferson Boulevard, Culver City 90232 - Tel: 310-836-7900 - Fax: 310-836-2157 - www.q-tech.com
QT2010 MCXO
MICROCOMPUTER COMPENSATED CRYSTAL OSCILLATOR
3.3Vdc - 5 to 100MHz, 32.768kHz and 1PPS
QT2010 MCXO (Revision A, December 2010)(ECO# 10047)
Q-TECH
CORPORATION
Description
Q-Tech’s microcomputer compensated crystal oscillator,
MCXO, uses a high stability overtone SC-cut crystal with mi-
croprocessor controlled compensation. The self-temperature
sensing resonator, using a dual-mode oscillator, virtually
eliminates thermometry related errors. As a result, all basic
TCXO and OCXO limitations are overcome or significantly
reduced in the MCXO.
Applications
• Satellite terminals
• Underwater monitors
• GPS
• Mobile equipment
Pin No.
Function
1
RF OUTPUT
2, 4, 7
N/C
3
GND / CASE
5
VC / REF INPUT
6
PPS OUTPUT
8
MODE SELECT INPUT
9
STATUS
10
SUPPLY VOLTAGE
Package Outline - Dimensions are in inches (mm)
Package Material:
• .025 + .002/-.003
Cold Rolled Steel
• Bright Nickel Plated
500µ Solderable
ITAR Controlled
Features
• Made in the USA
• ITAR
• DFARS 252-225-7014 Compliant:
Electronic Component Exemption
• USML Registration # M17677
• Frequency Stability-Temperature: ±2 x 10-8 from
-40ºC to +85ºC (Extended temperature range available)
•Outputs: 5 to 100MHz, 32.768kHz and 1PPS.Other
frequency options available
• DC Power Input: 3.3Vdc, 105milliwatts max
• Inputs: Mode Control
Calibration Reference Signal
Sync (optional)
• Initialization: <5 seconds from power on to full
performance
• Dual-Mode Oscillator: Specially developed for the
MCXO
• Aging Correction: Auto calibration in the field
• Environmental: Inherently rugged design capable of
full military screening
• Low Phase Noise and Jitter
• Small Form Factor
• G-Sensitivity 1PPB/G max. Ordering Information
For Non-Standard requirements, contact Q-Tech Corporation at
Sales@Q-Tech.com
Frequency vs. Temperature Code:
A = ± 5ppb at 0ºC to +50ºC
B = ± 10ppb at 0ºC to +70ºC
C = ± 30ppb at -40ºC to +85ºC
D = ± 20ppb at -40ºC to +85ºC
E = ± 30ppb at -55ºC to +105ºC
F = ± 20ppb at -55ºC to +105ºC
QT2010CBM-70.000MHz
QT 2010CBM - 70.000MHz
Sample part number
Output frequency
Screening Options:
Blank = No Screening
M = Per MIL-PRF-55310, Level B
Logic:
C = CMOS
S = Sine Wave
2
Q-TECH Corporation - 10150 W. Jefferson Boulevard, Culver City 90232 - Tel: 310-836-7900 - Fax: 310-836-2157 - www.q-tech.com
QT2010 MCXO
MICROCOMPUTER COMPENSATED CRYSTAL OSCILLATOR
3.3Vdc - 5 to 100MHz, 32.768kHz and 1PPS
QT2010 MCXO (Revision A, December 2010)(ECO# 10047)
Q-TECH
CORPORATION
Pararmeters Symbol Conditions Value Unit
Frequency Mode Parameters
Frequency Range fo - 5.000-100.000 MHz
Supply voltage, Nom. Vs Vs±5% 3.3 V
Power Consumption, max. Ps Vs, nom. / Ta=+25°C (No load) 105 mW
Nominal Tolerance Fnom Vs, nom. / Ta=+25°C±10 ppb
Freq. Stability vs. Temperature Δf/fc
(Ta) Ta=-40°C…+85°C ±20 ppb
Freq. Stability vs. Load
Variation Δfl NpF 
±5% Load Change ±20 ppb
Freq. Stability vs. Voltage
Supply Variation Δfv ±5% Input Voltage Change ±20 ppb
Aging (Max)
HCMOS SINE WAVE
HCMOS SINE WAVE
Δf/fo
Per Day
Over 10 Years
Over 20 Years
±1.0
±1.0
±1.5
ppb
ppm
ppm
Output Waveform 3.3V 3dBm±3dBm
Symmetry Ta=-40°C…+85°C 50±5 %
Rise/Fall Time (Max) Ta=-40°C…+85°C 3nSec
Startup Time (Max) Ta=-40°C…+85°C, to ±50.0 ppm 20 mSec
Stabilization Time (Max) Ta=-40°C…+85°C, to ±0.03 ppm 3Sec
Phase Noise (10MHz)
10Hz -110 dBc/Hz
100Hz -135 dBc/Hz
1kHz -145 dBc/Hz
10kHz -155 dBc/Hz
100kHz -160 dBc/Hz
Spurious (Max) Ta=-40°C…+85°C, >1kHz offset -100 dBc
Phase Noise Jitter 1kHz to 20MHz pSec
Aging Adjustment (10MHz ref) Ta=+25°C, stable environment ±0.02 ppm
Timekeeping Mode Parameters
Frequency Nom. Ft Ta=-40°C…+85°C 1
1
PPS
Power Consumption, max. Ps Vs, nom. / Ta=+25°C (No load) 90 mW
Freq. Stability vs. Temperature Δf/Ft
(Ta) Ta=-40°C…+85°C ±20 ppb
Output Waveform HCMOS 3.3V
Symmetry Ta=-40°C…+85°C 50±5 %
Rise/Fall Time (Max) Ta=-40°C…+85°C 100 nSec
Startup Time (Max) Ta=-40°C…+85°C ,to ±120.0 ppm 500 mSec
Stabilization Time (Max) Ta=-40°C…+85°C, to ±0.03 ppm 3Sec
Period Jitter 5nSec
Electrical Characteristics