Q-tech HIGH TEMPERATURE User Manual download pdf (Page 5)

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HIGH-TEMPERATURE UP TO 225ºC

CRYSTAL CLOCK OSCILLATORS

3.3 to 15Vdc - 1Hz to 110MHz

High-Temperature (Revision E, October 2010 ) (ECO# 10001)

Q-TECH

CORPORATION

Frequency vs. Temperature Curve

Output Waveform (Typical)

QT50-20MHz Hi-Temp Low Current Design

S/N temp I at 3.3v I at 3.63v I at 5.0v I at 5.5v

1146 +25ºC 1.08 1.17 1.66 1.81

1141 +25ºC 1.07 1.19 1.66 1.82

1146 +200ºC 1.35 1.48 2.005 2.18

1141 +200ºC 1.38 1.5 2.02 2.21

FREQUENCY STABILITY VS. TEMPERATURE 32.768kHz OUTPUT

-30

-25

-20

-15

-10

-5

25 35 45 55 65 75 85 95 105 115 125 135 145 155 165 175

Temperature in °C

Frequency error in PPM

FREQUENCY STABILITY VS. TEMPERATURE QT50HC8-16MHz

-200

-175

-150

-125

-100

-75

-50

-25

0 20 40 60 80 100 120 140 160 180 200

Temperature in °C

Frequency error in PPM

Vdd

GND

0.1xVdd

0.9xVdd

VOH

VOL

Tr Tf

0.5xVdd

SYMMETRY = x 100%

FREQUENCY STABILITY QT75L8-20.000MHz

-250

-220

-190

-160

-130

-100

-70

-40

-10

110

140

170

200

230

0 20 40 60 80 100 120 140 160 180 200

Temperature in °C

Frequency error in PPM

Output

Ground

Vdd

DUT

Out

GND

0.1µF

15pF

E/D

Tristate Function

Power

Supply

10k

Vdc

(*)

0.01µF

(*) CL includes probe and jig capacitance

Typical test circuit for CMOS logic

Test Circuit

Units are in mA

100

150

200

250

300

350

400

450

requency error in PPM

FREQUENCY STABILITY VS. TEMPERATURE QT81-7.5MHz 0 to 225°C

-250

-200

-150

-100

0255075100 125 150 175 200 225

Temperature in °C

1 2 3 4 5

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Q-tech HIGH TEMPERATURE User Manual Page 5

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