Order this document by MC3359/D
Low Power Narrowband FM IF
. . . includes oscillator, mixer, limiting amplifier, AFC, quadrature
discriminator, op/amp, squelch, scan control, and mute switch. The MC3359
is designed to detect narrowband FM signals using a 455 kHz ceramic filter
for use in FM dual conversion communications equipment. The MC3359 is
similar to the MC3357 except that the MC3359 has an additional limiting IF
stage, an AFC output, and an opposite polarity Broadcast Detector. The
MC3359 also requires fewer external parts. For low cost applications
requiring VCC below 6.0 V, the MC3361BP,BD are recommended. For
applications requiring a fixed, tuned, ceramic quadrature resonator, use the
MC3357. For applications requiring dual conversion and RSSI, refer to these
devices; MC3335, MC3362 and MC3363.
•
Low Drain Current: 3.6 mA (Typical) @ VCC = 6.0 Vdc
MC3359
HIGH GAIN
LOW POWER
FM IF
SEMICONDUCTOR
TECHNICAL DATA
•
•
•
Excellent Sensitivity: Input Limiting Voltage –
– 3.0 dB = 2.0
µV
(Typical)
Low Number of External Parts Required
For Low Voltage and RSSI, use the MC3371
P SUFFIX
PLASTIC PACKAGE
CASE 707
DW SUFFIX
PLASTIC PACKAGE
CASE 751D
(SO–20L)
ORDERING INFORMATION
Device
MC3359DW
MC3359P
TA = –30 to +70°C
Operating
Temperature Range
Package
Figure 2. Pin Connections and
Functional Block Diagram
Mixer
SO–20L
Plastic DIP
Crystal
Osc.
2
Mixer
Output
V
CC
Limiter
Input
Decoupling
Oscillator
1
18
RF
Input
Gnd
Audio
Mute
Scan
Control
Squelch
Input
Filter
Output
Filter
Input
Demod
Output
Recovered
Audio
17
Broadcast Detector
3
1.8 k
4
Limiter
5
1.8 k
16
15
14
6
50 k
10 pF
52 k
13
+
–
12
Decoupling
7
Figure 1. Simplified Application in a Scanner Receiver
Figure 2.
V
CC
= 6.0 Vdc
10.245 MHz
68 pF
2
220 pF
Ceramic
Filter
3
16
Mute
17
51 k
0.1
µF
51
10.7 MHz
Input
1
18
Quadrature
Input
Demodulator
Filter
8
Demodulator
11
9
10
CASE 707
V
CC
= 6.0 Vdc
NC
1
2
3
4
20
19
18
17
NC
RF
Input
Gnd
Audio
Mute
Scan
Control
Squelch
Input
Filter
Output
Filter
Input
Demod
Output
Recovered
Audio
Crystal
Osc.
Mixer
Output
VCC
Squelch
Sensitivity
1N4148
4
Type
CFU
455 D
15
Scan Control
MC3359
5
14
Squelch Input
+
120 k
6
13
Output
Inverting
Op Amp
(Filter)
Input
390 k
0.1
µF
0.001
µF
750
18 k
.47
µF
68 k
50 k
5
6
7
8
9
10
MC3359DW
16
15
14
13
12
11
0.1
µF
0.1
µF
Limiter
Input
Decoupling
Decoupling
7
8
12
68 k
Quad
Coil
11
9
10
0.001
µF
Automatic
Frequency
Control
Recovered Audio
Toko
Type
7MC–8128Z
7.5 k
0.002
µF
100 pF
0.01
µF
10 k
Audio
Volume
0.01
µF
Audio
Out
Quadrature
Input
Demodulator
Filter
CASE 751D
©
Motorola, Inc. 1996
Rev 3
MOTOROLA ANALOG IC DEVICE DATA
1
MOTOROLA [ MOTOROLA, INC ]
