MC12061 Datasheet, PDF (1/9 Pages) Motorola, Inc – Crystal Oscillator

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
• Three Outputs Available:
1. Complementary Sine Wave (600 mVpp typ)
2. Complementary MECL
3. Single Ended TTL
Order this document by MC12061/D
MC12061
CRYSTAL OSCILLATOR
SEMICONDUCTOR
TECHNICAL DATA
Figure 1. Block Diagram
Bias VCC
Bypass
0.1 µF
7
1 VCC
AGC
Filter
0.1 µF
4
Sine Wave
Output
– + –+
3 2 14 15 16
MECL
Output
VCC 13 12
11 VCC
16
1
Voltage
Reg.
Crystal
Osc.
AGC
Ampl./
AGC
6
5
Crystal
Note: 0.1 µF power supply
pin bypass capacitors
not shown.
Sine
to
MECL
8 VEE
TYPICAL CIRCUIT CONFIGURATIONS
Note: 0.1 µF power supply pin bypass capacitors not shown.
+5.0 V
+5.0 V
MECL
to
TTL
Trans-
lator
10
TTL
Output
9 VEE
P SUFFIX
PLASTIC PACKAGE
CASE 648
ORDERING INFORMATION
Device
Operating
Temperature Range
Package
MC12061P TA = 0° to +70°C
Plastic
+5.0 V
7 1 16 11 4
+
14
In
–
15
12 MECL Out
13
658 9
3–
Sine
Out
2+
10
Figure 2. Sine Wave
Output
CRYSTAL
REQUIREMENTS
Note: Start-up stabilization
time is a function of
crystal series resis-
tance. The lower the
resistance, the faster
the circuit stabilizes.
7 1 16 11 4
+
2
Out
–
3
–
14
In
+
15
6 58
10
TTL
Out
9
Figure 3. MTTL Output
7 1 16 4
+
2
Out
–
3
–
14
In
+
15
6
5
13 +
MECL
Out
12 –
8
Figure 4. MECL Output
(+5.0 V Supply)
7 1 16 4
+
2
Out
–
3
–
14
In
+
15
6
5
13 +
MECL
Out
12 –
8
–5.2 V
Figure 5. MECL Output
(–5.2 V Supply)
Characteristic
Mode of Operation
Frequency Range
Series Resistance, R1
Maximum Effective Resistance RE(max)
MC12061
Fundamental Series Resonance
2.0 MHz — 20 MHz
Minimum at Fundamental
155 ohms
© Motorola, Inc. 1997
Rev 5