Q-Tech QT812 Square Wave - Manual (Page 9)

Q-TECH Corporation
10150 W. Jefferson Blvd.
Culver City, CA 90232
SIZE
A
CAGE NO.
51774
QT811 and QT812 Square-Wave
24 pin DDIP
REV.
Sheet 9 of 10 D
3.8 Engineering Models
Engineering Models are fit, form, and function representative of Flight Models and of commercial
construction using commercial parts of same generic type as Flight Models. Completed oscillators are
not screened.
NOTES:
This oscillator is offered to meet the specifications above and is not guaranteed to meet any
other requirements.
▀
PART NUMBER GENERATION
SERIES
Output type
and supply
voltage
SYMMETRY
TEMPERATURE
RANGE ( °C)
Stability
Over
Temperature
External
Tuning
Level
FREQUENCY
(MHz)
QT81:
24 Pin
Flat-
Pack
1: HCMOS, 5.0V A:40%…60% N: 0…+50……… ±1 ppm
X: No tuning ( ± 1
ppm accuracy at
25
°C)
E: Eng. Model
3.000…90.000
(See note 1)
2: HCMOS, 3.3V T:(See note 2) P: 0…+70………… ±1 ppm R: External resistor M: Flight Model
Q: 0…+70……… ±2 ppm V: External voltage
R: 0…+70……… ±5 ppm
U: -20…+70…… ±1 ppm
V: -20…+70…… ±2 ppm
W:-20…+70…… ±5 ppm
X: -40…+85…… ±4 ppm
Y: -40…+85…… ±5 ppm
Z: -40…+85…… ±10 ppm
A: 0…..+50…… ± 0.5ppm
G: 0….+70…… ± 0.5ppm
H:-30…+70…… ±2 ppm
K:-30…+70…… ±4 ppm
(See note 1 below)
1. Variations from standard specification are available, please contact factory.
2. 45/55 Symmetry Contact factory for options available.
EXAMPLE:
QT812AURM-50.000000 would be a Flight Model version HF TCXO, 24 pin SMD Falt-Pack, HCMOS 3.3 volts, 40/60
symmetry, stability ±1 ppm over -20…+70°C, @ 50 MHz with external tuning via external resistor
QT812AURE-50.000000 would be an Engineering Model version HF TCXO, 24 pin SMD Falt-Pack, HCMOS 3.3 volts,
40/60 symmetry, stability ±1 ppm over -20…+70°C, @ 50 MHz with external tuning via external resistor
ITAR-CONTROLLED Q-TECH PROPRIETARY DO NOT COPY OR DISTRIBUTE WITHOUT Q-TECH APPROVAL
24 PIN Flat-Pack