Datasheet MC3363DW Datasheet (Motorola)

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The MC3363 is a single chip narrowband VHF FM radio receiver. It is a dual
conversion receiver with RF amplifier transistor, oscillators, mixers,
quadrature detector, meter drive/carrier detect and mute circuitry. The
MC3363 also has a buffered first local oscillator output for use with frequency
synthesizers, and a data slicing comparator for FSK detection.

• Wide Input Bandwidth – 200 MHz Using Internal Local Oscillator

Wide Input Bandwidth – 450 MHz Using External Local Oscillator

• RF Amplifier Transistor

• Muting Operational Amplifier

• Complete Dual Conversion

• Low V oltage: V

• Low Drain Current: I

Excluding RF Amplifier Transistor

• Excellent Sensitivity: Input 0.3 µV (Typical) for 12 dB SINAD

Using Internal RF Amplifier Transistor

• Data Shaping Comparator

• Received Signal Strength Indicator (RSSI) with 60 dB

Dynamic Range

• Low Number of External Parts Required

• Manufactured in Motorola′s MOSAIC

= 2.0 V to 6.0 Vdc

CC

= 3.6 mA (Typical) at VCC = 3.0 V,

CC



Process Technology

Order this document by MC3363/D



LOW POWER

DUAL CONVERSION

FM RECEIVER

SEMICONDUCTOR

TECHNICAL DATA

DW SUFFIX

PLASTIC PACKAGE

CASE 751F

(SO-28L)

ORDERING INFORMATION

Operating

Device

MC3363DW TA = – 40 to +85°C SO–28L

Temperature Range

Package

Figure 1. Pin Connections and Representative

Block Diagram

Base

Emitter

V

CC

1

2

3

4

5

6

7

8

9

10

11

12

13

++–

–

1st Mixer Input

Collector

2nd LO Emitter

2nd LO Base

2nd Mixer Output

Limiter Input
Limiter Decoupling
Limiter Decoupling

Meter Drive (RSSI)

Carrier Detect

Quadrature Coil

28

1st Mixer Input

27

Varicap Control

26

1st LO Tank

25

1st LO Tank

24

1st LO Output

23

1st Mixer Output

22

2nd Mixer Input

21

2nd Mixer Input

20

V

EE

19

Mute Output

18

Comparator Output

17

Comparator Input

16

Recovered Audio

1514

Mute Input

MOTOROLA ANALOG IC DEVICE DATA

 Motorola, Inc. 1996 Rev 0

1

MC3363

(p )p g g

CC

MAXIMUM RATINGS (T

Rating Pin Symbol Value Unit

Power Supply Voltage 8 V
Operating Supply Voltage Range

(Recommended)
Input Voltage (VCC = 5.0 Vdc) 1, 28 V
Mute Output Voltage 19 V
Junction Temperature – T
Operating Ambient Temperature Range – T
Storage Temperature Range – T

ELECTRICAL CHARACTERISTICS (V

test circuit of Figure 2 unless otherwise noted)

Drain Current (Carrier Detect Low) 8 – 4.5 8.0 mA
–3.0 dB Limiting Sensitivity (RF Amplifier Not Used) – 0.7 2.0
Input For 12 dB SINAD – 0.3 –
20 dB S/N Sensitivity (RF Amplifier Not Used) – 1.0 –
1st Mixer Input Resistance (Parallel – Rp)

1st Mixer Input Capacitance (Parallel – Cp)
1st Mixer Conversion Voltage Gain (A

2nd Mixer Conversion Voltage Gain )A
2nd Mixer Input Sensitivity (20 dB S/N) (10.7 MHz i/p) 21 – 10 – µVrms
Limiter Input Sensitivity (20 dB S/N) (455 kHz i/p) 9 – 100 –
RF Transistor DC Current Drain 4 1.0 1.5 2.5 mAdc
Noise Output Level (RF Signal = 0 mV) 16 – 70 – mVrms
Recovered Audio (RF Signal Level = 1.0 mV) 16 120 200 – mVrms
THD of Recovered Aduio (RF Signal = 1.0 mV) 16 – 2% – %
Detector Output Impedance 16 – 400 –
Series Equivalent Input Impedance 1 – 450–

Data (Comparator) Output Voltage – High

Data (Comparator) Output Voltage – Low 0.1 0.1

= 25°C unless otherwise noted)

A

8 V

= 5.0 Vdc, fo = 49.7 MHz, Deviation = ±3.0 kHz, TA = 25°C, Mod 1.0 kHz,

CC

Characteristic

, Open Circuit) – 18 –

vc1

, Open Circuit) – 21 –

vc2

CC(max)

CC

1–28

19

J

A

stg

7.0 Vdc

2.0 to 6.0 Vdc

1.0 Vrms

– 0.7 to 8.0 Vpk

150 °C

– 40 to +85 °C

– 65 to +150 °C

Pin Min Typ Max Units

1, 28 – 690 – Ω
1, 28 – 7.2 – pF

18 –

j350

–

µVrms

dB

–

V

CC

–

Vdc

Ω

Data (Comparator) Threshold Voltage Difference 17 70 110 150 mV
Meter Drive Slope 12 70 100 135 nA/dB
Carrier Detect Threshold (Below VCC) 12 0.53 0.64 0.77 Vdc
Mute Output Impedance – High

Mute Output Impedance – Low – 25 –

2

19 – 10

MOTOROLA ANALOG IC DEVICE DATA

– MΩ

or Equivalent

or Equivalent

MC3363

Comparator Output

Mute Output

Recovered Audio

Output

Figure 2. T est Circuit

CRF 1:muRata SFE 10.7 mA

CRF 2:muRata CFU 455D

L1: Coilcraft UNI 10/142 10–1/2 Turns

µ

L1 0.41 H

LC1: Toko 7MC8128Z

From PLL Phase Deetector

L1

33 pF

28

27

26

1

2

3

25

24

4

5

µ

To PLL Phase Detector

10 F

+

0.1

CRF 1

23

22

21

6

7

8

10 k10 k

10.7 MHz

20

9

Mute Input

Comparator T est Input

5.0 k

0.01 0.01

0.01

390 k

5.0 k

1.0 k

19

18

17

16

15

+
–

–
+

10 k

Carrier Detect Output

11

10

12

13

14

2.6

Ferronics 12–345–K Core

1000 pF

= 5.0 Vdc

CC

V

1st Mixer Input

50 MHz

MOTOROLA ANALOG IC DEVICE DATA

120 pF

10.245 M

CRF 2

0.1

0.1

0.1

10 k

Figure 2.

68 k

LC1

3

MC3363

CIRCUIT DESCRIPTION

The MC3363 is a complete FM narrowband receiver from
RF amplifier to audio preamp output. The low voltage dual
conversion design yields low power drain, excellent
sensitivity and good image rejection in narrowband voice and
data link applications.

In the typical application, the input RF signal is amplified
by the RF transistor and then the first mixer amplifies the
signal and converts the RF input to 10.7 MHz. This IF signal
is filtered externally and fed into the second mixer, which
further amplifies the signal and converts it to a 455 kHz IF
signal. After external bandpass filtering, the low IF is fed into
the limiting amplifier and detection circuitry. The audio is
recovered using a conventional quadrature detector.
Twice-IF filtering is provided internally.

The input signal level is monitored by meter drive circuitry
which detects the amount of limiting in the limiting amplifier.
The voltage at the meter drive pin determines the state of the
carrier detect output, which is active low.

APPLICATIONS INFORMATION

The first local oscillator is designed to serve as the VCO in
a PLL frequency synthesized receiver. The MC3363 can
operate together with the MC145166/7 to provide a two-chip
ten–channel frequency synthesized receiver in the 46/49
cordless telephone band. The MC3363 can also be used with
the MC14515X series of CMOS PLL synthesizers and
MC120XX series of ECL prescalers in VHF frequency
synthesized applications to 200 MHz.

For single channel applications the first local oscillator can
be crystal controlled. The circuit of Figure 4 has been used
successfully up to 60 MHz. For higher frequencies an
external oscillator signal can be injected into Pins 25 and/or
26 — a level of approximately 100 mVrms is recommended.
The first mixer′s transfer characteristic is essentially flat to
450 MHz when this approach is used (keeping a constant

10.7 MHz IF frequency). The second local oscillator is a
Colpitts type which is typically run at 10.245 MHz under
crystal control.

The mixers are doubly balanced to reduce spurious
responses. The first and second mixers have conversion
gains of 18 dB and 21 dB (typical), respectively . Mixer gain is
stable with respect to supply voltage. For both conversions,
the mixer impedances and pin layout are designed to allow
the user to employ low cost, readily available ceramic filters.

Following the first mixer, a 10.7 MHz ceramic bandpass
filter is recommended. The 10.7 MHz filtered signal is then
fed into the second mixer input Pin 21, the other input Pin 22
being connected to VCC.

The 455 kHz IF is filtered by a ceramic narrow bandpass
filter then fed into the limiter input Pin 9. The limiter has 10 µV
sensitivity for –3.0 dB limiting, flat to 1.0 MHz.

The output of the limiter is internally connected to the
quadrature detector, including a quadrature capacitor. A

parallel LC tank is needed externally from Pin 14 to VCC. A 68
kΩ shunt resistance is included which determines the peak
separation of the quadrature detector; a smaller value will
lower the Q and expand the deviation range and linearity , but
decrease recovered audio and sensitivity .

A data shaping circuit is available and can be coupled to
the recovered audio output of Pin 16. The circuit is a
comparator which is designed to detect zero crossings of
FSK modulation. Data rates of up to 35000 baud are
detectable using the comparator. Best sensitivity is obtained
when data rates are limited to 1200 baud maximum.
Hysteresis is available by connecting a high-valued resistor
from Pin 17 to Pin 18. Values below 120 kΩ are not
recommended as the input signal cannot overcome the
hysteresis.

The meter drive circuitry detects input signal level by
monitoring the limiting of the limiting amplifier stages.
Figure 5 shows the unloaded current at Pin 12 versus input
power. The meter drive current can used directly (RSSI) or
can be used to trip the carrier detect circuit at a specified
input power.

A muting op amp is provided and can be triggered by the
carrier detect output (Pin 13). This provides a carrier level
triggered squelch circuit which is activated when the RF input
at the desired input frequency falls below a present level. The
level at which this occurs is determined by the resistor placed
between the meter drive output (Pin 12) and VCC. Values
between 80–130 kΩ are recommended. This type of squelch
is pictured in Figures 3 and 4.

Hysteresis is available by connecting a high-valued
resistor Rh between Pins 12 and 13. The formula is:

Hyst = VCC/ (Rh x 10–7) dB

The meter drive can also be used directly to drive a meter
or to provide AGC. A current to voltage converter or other
linear buffer will be needed for this application.

A second possible application of the op amp would be in a
noise triggered squelch circuit, similar to that used with the
MC3357/MC3359/MC3361B FM IFs. In this case the op amp
would serve as an active noise filter, the output of which
would be rectified and compared to a reference on a squelch
gate. The MC3363 does not have a dedicated squelch gate,
but the NPN RF input stage or data shaping comparator
might be used to provide this function if available. The op
amp is a basic type with the inverting input and the output
available. This application frees the meter drive to allow it to
be used as a linear signal strength monitor.

The circuit of Figure 4 is a complete 50 MHz receiver from
antenna input to audio preamp output. It uses few
components and has good performance. The receiver
operates on a single channel and has input sensitivity of

t

0.3 µV for 12 dB SINAD.

NOTE: For further application and design information, refer to AN980.

4

MOTOROLA ANALOG IC DEVICE DATA

MC3363

(Regulated)

Pull–Up

CC

V

Resistor

3.3 k to 20 k

µ

L = 0.08 H

: 200 MHz

osc

f

To

Dual PLL

MC145166/7

From PLL Phase Detector

CRF 1: muRata SFE 10.7 mA or Equivalent

CRF 2: muRata CFU 455D or Equivalent

L1: Coilcraft UNI 10/142 10 1/2 Turns

LC1: T oko 7MC8128Z

µ

0.41 H
33 pF

28

27

26

25

24

23

Frequency

Synchrsizer

3.0 k

µ

10 F

+

µ

0.1 F

CRF 1

22

Pin 27

Pin 26

Pin 25

Pin 24

Cr

used to run the oscillator above 50 MHz.

Data Output

Recovered Audio

Output

NOTE: Pull Up resistor is

Volume Control

20 k

+

µ

10 H

0.01

10 k

8.2 k

µ

+

1.0 H

0.01

21

20

19

18

17

16

15

µ

Figure 3. T ypical Application in a PLL Frequency Synthesized Receiver

2.0T

T1 0.41 H

10.5T

1

27 pF

= 5.0 Vdc

CC

V

0.01

2

3

0.001

390

4

5

50 pF

120 pF

6

CF1

10.245 M

+
–

–
+

100 k

7

8

9

11

10

12

13

14

µ

0.1

0.1
10 k

39 k

L = 680 H

C = 180 pF

120 pF

0.001

LC1

200 k

Mute

Control

Figure 3.

RF Input

49.670 to

9.970 MHz

MOTOROLA ANALOG IC DEVICE DATA

5

L.O. Out

(optional)

Spkr

Ω

8.0

MC3363

MC341 19D

LED

– V

LED

ΩΩ

= 1.5 k to 2.0 k

out

= R

in

Ω

= 330

out

= R

in

µ

100 F

+

8

7

6

5

V

CC

R

≈

LED

50 k

Crystal filters improve adjacent channel and second

image (unwanted 48.76 MHz) rejection. Sensitivity is

MuRata CFU455X or CFW455X, suffix denotes bandwidth

F1 – 455 kHz ceramic filter, R

MuRata SFE10.7MJ–A, SFA10.7MF5, or SFE10.7MS2A.

F2 – 10.7 MHz ceramic filter, R

1

2

3

4

+

+

degraded very slightly with this circuit.

F2X – 10.7 MHz crystal filter, FOX 10M20A or equivalent.

LC1 – 455 kHz quadrature tank circuit; Toko 7MC8128Z

32 pF .

taper.

P1 – Volume control, miniature potentiometer , logarithmic

X11 – 10.245 MHz fundamental mode crystal, load capacity

X2 – 38.97 MHz, 3rd overtone crystal, series mode.

is used to adjust LED current: I

0.68 µH adjustable coil; Coilcraft M1287–A

0.22 µH adjustable coil; Coilcraft M1175–A
LED

R

Ω

300

20 k

µ

4.7 H

µ

10 H

1.0 k pF

µ

µ

5.0 F

1.0 F

20 k

X2

F2X

15 pF

22

7

µ

3.3 H

0.1

8.2 k

21

20

19

18

17

16

+
–

–
+

8

9

11

10

12

13

µ

4.7 H

µ

µ

0.01

3.0 k

0.68 H

0.68 H

0.01

5.0–25 pF

28

27

26

25

24

23

Figure 4. Single Channel Narrowband FM Receiver at 49.67 MHz

MC3363DW

1

2

3

4

5

6

0.1

15

14

10 k

P1

0.022

100 k

100 k

15 k

LED

R

2N4402

+

µ

1.0 F

Carrier

Detect

Indicator

Figure 4.

RF Input

6

Ω

50

39 pF 1.0 k pF

49.67 MHz

1.0 k pF

120 pF

1.0 k

µ

0.22 H

50 pF

X1

10.01

2.0–7.0 Vdc
CC

V

F1

0.1

Adjust

Squelch

0.1

0.1

50 k

9.1 M

10 k

LC1

CC

V

F223

139 k

22

21

MOTOROLA ANALOG IC DEVICE DATA

Standard 10.7 MHz Filter

7

1.4 k

22

MC3363

19

15

Bias

18

Bias

17

20

16

400 400

21

6

8

23

Figure 5. Circuit Schematic

100

13

Bias

5

14

12

28

24

1.0 k 1.0 k

27

1

Bias

26

25

MOTOROLA ANALOG IC DEVICE DATA

Bias

Bias

1.0 k

4

3

2

2.0 k

9

10

11

Figure 5.

7

Figure 6. PC Board Component View
with High Performance Crystal Filter

BNC

RF IN

300

39p

SM

.22

X1 120p

SM

.1

50p

SM

F1

.1

50K

51K

15K

1.0
R

LED

10K
9,1M

.1.1

4402

2N

1K

1000p

1000p

.01

MC3363DW

100K

39K

LC1

H

X2

.68

µ

µ

H

µ

68

.01

5 – 25P

3K

15p

SM

5–25P

.1

8.2K

.1

100K

MC3363DW

MC3363

Figure 7. PC Board Circuit Side View

Gnd

20K

20K

H

4.7

µ

H

4.7

µ

H

.001

F2

X

3.3

µ

H

10

µ

H

.1

.022

P1

1.0

5.0

10K

50K

R

cc

V

100

L

SPKR

Figure 8. PC Board Component Side Ground Plane

RF IN

SPKR

MC3363DW

3.000

I

GndV

cc

I

3.000

8

MOTOROLA ANALOG IC DEVICE DATA

MC3363

OUTLINE DIMENSIONS

DW SUFFIX

PLASTIC PACKAGE

CASE 751F–04

(SO-28L)

–A–

28

15

–B–

1

28X

D

0.010 (0.25) B

M

S

A

T

14

S

ISSUE E

14X

P

0.010 (0.25) B

X 45R

_

M

M

M

C

26X G

–T–

SEATING
PLANE

K

J

NOTES:

1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.

2. CONTROLLING DIMENSION: MILLIMETER.

3. DIMENSION A AND B DO NOT INCLUDE
MOLD PROTRUSION.

4. MAXIMUM MOLD PROTRUSION 0.15 (0.006)
PER SIDE.

5. DIMENSION D DOES NOT INCLUDE DAMBAR
PROTRUSION.
DAMBAR PROTRUSION SHALL BE 0.13
(0.005) TOTAL IN EXCESS OF D DIMENSION
AT MAXIMUM MATERIAL CONDITION.

DIM MIN MAX MIN MAX

F

ALLOWABLE

INCHESMILLIMETERS

A 17.80 18.05 0.701 0.711
B 7.40 7.60 0.292 0.299
C 2.35 2.65 0.093 0.104
D 0.35 0.49 0.014 0.019
F 0.41 0.90 0.016 0.035

G 1.27 BSC 0.050 BSC

J 0.23 0.32 0.009 0.013
K 0.13 0.29 0.005 0.011

M 0 8 0 8

____

P 10.01 10.55 0.395 0.415
R 0.25 0.75 0.010 0.029

MOTOROLA ANALOG IC DEVICE DATA

9

MC3363

Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty , representation or guarantee regarding
the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and
specifically disclaims any and all liability, including without limitation consequential or incidental damages. “T ypical” parameters which may be provided in Motorola
data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals”
must be validated for each customer application by customer’s technical experts. Motorola does not convey any license under its patent rights nor the rights of
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applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury
or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola
and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees
arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that
Motorola was negligent regarding the design or manufacture of the part. Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal
Opportunity/Affirmative Action Employer.

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10

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MOTOROLA ANALOG IC DEVICE DATA

Mfax is a trademark of Motorola, Inc.

MC3363/D