Order this document by MC12061/D
MC12061
Crystal Oscillator
The MC12061 is for use with an external crystal to form a crystal
controlled oscillator. In addition to the fundamental series mode crystal, two
bypass capacitors are required (plus usual power supply pin bypass
capacitors). Translators are provided internally for MECL and TTL outputs.
• Frequency Range = 2.0 to 20 MHz
Temperature Range = 0 to + 70°C
Single Supply Operation: +5.0 Vdc or –5.2 Vdc
SEMICONDUCTOR
TECHNICAL DATA
Three Outputs Available:
1. Complementary Sine Wave (600 mVpp typ)
2. Complementary MECL
3. Single Ended TTL
Figure 1. Block Diagram
AGC
Filter
0.1 µF
VCC
Bias
Bypass
0.1 µF
Sine Wave
Output
–
7
1 VCC
Voltage
Reg.
4
3
MECL
Output
+
2
–
14
16
VCC
13
12
AGC
6
5
8
11
VCC
1
MECL
to
TTL
Translator
Sine
to
MECL
Ampl./
AGC
Crystal
Osc.
16
+
15
VEE
9
10
P SUFFIX
PLASTIC PACKAGE
CASE 648
TTL
Output
VEE
ORDERING INFORMATION
Crystal
Note: 0.1 µF power supply
pin bypass capacitors
not shown.
Device
Operating
Temperature Range
Package
MC12061P
TA = 0° to +70°C
Plastic
TYPICAL CIRCUIT CONFIGURATIONS
Note: 0.1 µF power supply pin bypass capacitors not shown.
+5.0 V
7
1
16
11
+5.0 V
4
3
7
–
+
14
1
16
11
+5.0 V
4
7
+
In
2
Sine
Out
–
10
–
TTL
Out
12
MECL Out
+
10
6
5
8
9
13
7
+
14
In
5
8
13
+
Out
MECL
Out
–
14
In
12
14
–
In
12
–
+
15
6
9
4
3
15
6
16
–
MECL
Out
–
+
15
1
2
Out
–
+
13
4
3
3
2
16
+
2
Out
–
15
1
+
5
8
6
5
8
–5.2 V
Figure 2. Sine Wave
Output
CRYSTAL
REQUIREMENTS
Note: Start-up
stabilization
time is a function of
crystal series resistance. The lower the
resistance, the faster
the circuit stabilizes.
Figure 3. MTTL Output
Figure 4. MECL Output
Figure 5. MECL Output
(+5.0 V Supply)
(–5.2 V Supply)
Characteristic
MC12061
Mode of Operation
Fundamental Series Resonance
Frequency Range
2.0 MHz — 20 MHz
Series Resistance, R1
Maximum Effective Resistance RE(max)
Minimum at Fundamental
155 ohms
© Motorola, Inc. 1997
Rev 5
ARCHIVE INFORMATION
ARCHIVE INFORMATION
•
•
•
CRYSTAL OSCILLATOR