MC1496, MC1496B
http://onsemi.com
10
be introduced with or without modulation, provided its level
is sufficiently high to saturate the upper quad differential
amplifier. If the carrier signal is modulated, a 300 mVrms
input level is recommended.
Doubly Balanced Mixer
The MC1496 may be used as a doubly balanced mixer
with either broadband or tuned narrow band input and output
networks.
The local oscillator signal is introduced at the carrier input
port with a recommended amplitude of 100 mVrms.
Figure 29 shows a mixer with a broadband input and a
tuned output.
Frequency Doubler
The MC1496 will operate as a frequency doubler by
introducing the same frequency at both input ports.
Figures 30 and 31 show a broadband frequency doubler
and a tuned output very high frequency (VHF) doubler,
respectively.
Phase Detection and FM Detection
The MC1496 will function as a phase detector. High−level
input signals are introduced at both inputs. When both inputs
are at the same frequency the MC1496 will deliver an output
which is a function of the phase difference between the two
input signals.
An FM detector may be constructed by using the phase
detector principle. A tuned circuit is added at one of the
inputs to cause the two input signals to vary in phase as a
function of frequency. The MC1496 will then provide an
output which is a function of the input signal frequency.
V
S
DSB
MC1496
V
CC
12 V
−
R1
+
Carrier Input
60 mVrms
Carrier
Input
1.0 k1.0 k
Carrier Null
Carrier Adjust
1.0 k
R
e
1.0 k
2
R
L
3.9 k
3
R
L
3.9
12
6
6.8 k
I5
V
EE
−8.0 Vdc
10 k10 k 51 51
Modulating
Signal
Input
V
C
14 5
0.1 F
0.1 F
50 k
+
−
MC1496
Output
0.1 F
0.1 F
0.1 F
V
CC
12 Vdc
10 k 100 100
10 k
3.0 k 3.0 k
1.0 k
1.3 k820
50 k
10 k
10 F
15 V
Signal Input
300 mVrms
Modulating
Carrier
Null
+
25 F
15 V
51
25 F
15 V
2
3
14 5
Modulating
Signal
Input
V
S
V
C
1.0 F
Carrier
Input
50 k
750 51 51750
V
EE
−8.0 Vdc
15
6.8 k
R
L
3.9 k
R
e
1.0 k
23
14 5
0.1 F
−V
o
+V
o
V
CC
12 Vdc
51
51
1.0 k1.0 k
MC1496
2
3
14 5
MC1496
1.3 k820
1.0 k
Carrier Input
300 mVrms
SSB Input
51
100
3.0 k 3.0 k
0.005
F
10 k
0.1
F
1.0 k
0.1 F
0.1 F
0.1 F
0.1 F
V
CC
12 Vdc
A
Out
R
L
q 1
0.005
F
TYPICAL APPLICATIONS
1.0 k
8
4
1
10
12
6
12
6
12
6
R
L
3.9 k
8
4
1
10
8
4
1
10
8
4
1
10
Figure 25. Balanced Modulator
(12 Vdc Single Supply)
Figure 26. Balanced Modulator−Demodulator
Figure 27. AM Modulator Circuit Figure 28. Product Detector
(12 Vdc Single Supply)
1.0 k
0.005
F
