Datasheet

UNISONIC TECHNOLOGIES CO., LTD
MC3361BP
LINEAR INTEGRATED CIRCUIT
LOW VOLTAGE/POWER
NARROW BAND FM IF

DESCRIPTION
The UTC MC3361BP is designed for use in FM dual conversion
communication. It contains a complete narrow band FM
demodulation system operable to less than 2.5V supply voltage. This
low-power narrow-band FM IF system provides the second
converter, second IF, demodulator. Filter Amp and squelch circuitry
for communications and scanning receivers.

FEATURES
*Low power consumption (4.0mA typ. at Vcc=4.0V)
*Excellent input sensitivity
(-3dB limiting, 2.0Vrms typ.)
*Minimum number of external components required.
*Operating Voltage: 2.5~7.0V

APPLICATIONS
*Cordless phone (for home use)
*FM dual conversion communications equipment

ORDERING INFORMATION
Order Number
Lead Free
MC3361BPL-D16-T
-

Halogen Free
MC3361BPG-D16-T
MC3361BPG-N16-R
MC3361BPG-S16-R
Package
Packing
DIP-16
TSSOP-16
SOP-16
Tube
Tape Reel
Tape Reel
MARKING
DIP-16
www.unisonic.com.tw
Copyright © 2015 Unisonic Technologies Co., Ltd
SOP-16 / TSSOP-16
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QW-R108-010.E
MC3361BP
LINEAR INTEGRATED CIRCUIT

PIN CONFIGURATION

BLOCK DIAGRAM
1
Local
OSC
2
16
15
14
1.8k
13
3
4
Squelch Trigger
With Hysteresis
5
12
1.8k
11
6
IF Amp
-
7
10
+
Qual Detector
AF Amp
9
8
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QW-R108-010.E
MC3361BP

LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS (TA=25C)
PARAMETER
Max. Supply Voltage
Supply Voltage Range
Detector Input voltage
RF Input Voltage (Vcc≧4.0V)
SYMBOL
RATING
UNIT
Vcc(MAX)
10
V
Vcc
2.5 to 7.0
V
VI(DET)
1.0
Vp-p
VI(RF)
1.0
Vrms
Mute Function
VMUTE
-0.5 ~ + 5.0
Vpeak
Operating Temperature
TOPR
-20 ~ +70
C
Storage Temperature
TSTG
-65 ~ +150
C
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.

ELECTRICAL CHARACTERISTICS
(Vcc=4.0V, fo=10.7MHz, f=3KHz, fMOD=1KHz, Ta=25C, unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
Squelch OFF (V12=2V)
Operating Current
Icc
Squelch ON (V12=GND)
Input Limiting Voltage
VI(LIMIT)
-3.0dB limiting
Detector Output Voltage
VO(DET)
Detector Output Impedance
ZO(DET)
Audio Output Voltage
VO
VIN=10mV
100
Filter Gain
GV
f=10KHz,VIN=5mV
40
Filter Output DC Voltage
VO(DC)
Trigger Hysteresis of Filter
VTH
Mute Switch-ON Resistance
RON(MUTE) Mute “Low”
Mute Switch-OFF Resistance
ROFF(MUTE) Mute “High”
Scan Control “Low” Output
VL(SCAN)
Mute OFF (V12=2V)
Scan Control “High” Output
VH(SCAN)
Mute ON (V12=GND)
3.0
Mixer Conversion Gain
GV(MIXER)
Mixer Input Resistance
RI(MIXER)
Mixer Input Capacitance
CI(MIXER)
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
TYP
4.0
6.0
2.0
2.0
400
160
48
1.5
50
10
10
MAX
0.5
24
3.3
2.2
UNIT
mA
mA
V
Vdc

mVrms
dB
Vdc
mV

M
Vdc
Vdc
dB
K
pF
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MC3361BP
APPLICATION CIRCUIT
AUDIO
VOLUME
510
120K
MURATA
CFU 455D

LINEAR INTEGRATED CIRCUIT
In the above typical application, the audio signal is recovered using a conventional quadrature FM detector. The
absence of an input signal is indicated by the presence of noise above the desired audio frequencies. This “noise
band: is monitored by an active filter and a detector. A squelch trigger circuit indicates the presence of noise (or a
tone) by an output which can be used to control scanning. At the same time, an internal switch is operated which can
be used to mute the audio.
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R108-010.E
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