Datasheets MC2833 Datasheet

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MC2833 is a one–chip FM transmitter subsystem designed for cordless
telephone and FM communication equipment. It includes a microphone
amplifier, voltage controlled oscillator and two auxiliary transistors.

• Wide Range of Operating Supply Voltage (2.8–9.0 V)

• Low Drain Current (I

• Low Number of External Parts Required

• – 30 dBm Power Output to 60 MHz Using Direct RF Output

• +10 dBm Power Output Attainable Using On–Chip Transistor Amplifiers

• Users Must Comply with Local Regulations on R.F.

Transmission (FCC, DOT, P.T.T., etc)

= 2.9 mA Typ)

CC

Order this document by MC2833/D



LOW POWER

FM TRANSMITTER

SYSTEM

SEMICONDUCTOR

TECHNICAL DATA

P SUFFIX

PLASTIC PACKAGE

CASE 648

D SUFFIX

PLASTIC PACKAGE

CASE 751B

(SO–16)

Representative Block Diagram

PIN CONNECTIONS

1

RF

Osc

2

3

4

5

6

Variable

Reactance

Buffer

Mic

Amp

+–

16

15

14

13

12

11

Variable

Reactance

Output

Decoupling

Modulator

Input

Mic Amp

Output

Mic Amp

Input

Gnd

Tr 1

Emitter

Tr 1

Base

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

Tr 2

9

RF
Osc

RF
Output

Base
Tr 2

Emitter
Tr 2

Collector

V

CC

Tr 1
Collector

7

8

MOTOROLA ANALOG IC DEVICE DATA

V

REF

10

9

ORDERING INFORMATION

Operating

Device

MC2833D
MC2833P

 Motorola, Inc. 1996 Rev 1

Temperature Range

TA = – 30 to +75°C

Package

SO–16

Plastic DIP

1

MAXIMUM RATINGS

Ratings Symbol Value Unit

Power Supply Voltage V
Operating Supply Voltage Range V
Junction Temperature T
Operating Ambient Temperature T
Storage Temperature Range T

CC
CC

A

stg

MC2833

10 (max) V

2.8–9.0 V

J

+ 150 °C

– 30 to + 75 °C

– 65 to + 150 °C

ELECTRICAL CHARACTERISTICS (V

Characteristics

Drain Current (No input signal) I

FM MODULATOR

Output RF Voltage (fo = 16.6 MHz) V
Output DC Voltage (No input signal) Vdc 14 2.2 2.5 2.8 V
Modulation Sensitivity (fo = 16.6 MHz)

Modulation Sensitivity (Vin = 0.8 V to 1.2 V)

Maximum Deviation (fo = 16.6 MHz)

Maximum Deviation (Vin = 0 V to 2.0 V)

MIC AMPLIFIER

Closed Loop Voltage Gain (Vin = 3.0 mVrms)

Closed Loop Voltage Gain (fin = 1.0 kHz)

Output DC Voltage (No input signal) V
Output Swing Voltage (Vin = 30 mVrms)

Output Swing Voltage (fin = 1.0 kHz)

Total Harmonic Distortion (Vin = 3.0 mVrms)

Total Harmonic Distortion (fin = 1.0 kHz)

= 4.0 V, TA = 25°C, unless otherwise noted)

CC

Symbol Pin Min Typ Max Unit

CC

RF 14 60 90 130 mVrms

out

SEN 3

Fdev 3

A

v

dc 4 1.1 1.4 1.7 V

out

V

p–p 4 0.8 1.2 1.6 Vp–p

out

THD 4 – 0.15 2.0 %

10 1.7 2.9 4.3 mA

14

14

7.0
–

3.0
–

4
5

27

–

10

5.0

30

15

–

–

–

Hz/mVdc

–

10

–

33

–

AUXILIARY TRANSISTOR STATIC CHARACTERISTICS

Characteristics Symbol Min Typ Max Unit

Collector Base Breakdown Voltage (IC = 5.0 µA) V
Collector Emitter Breakdown Voltage (IC = 200 µA) V
Collector Substrate Breakdown Voltage (IC = 50 µA) V
Emitter Base Breakdown Voltage (IE = 50 µA) V
Collector Base Cut Off Current (VCB = 10 V)

Collector Base Cut Off Current (IE = 0)

DC Current Gain (IC = 3.0 mA)

DC Current Gain (VCE = 3.0 V)

(BR)CBO
(BR)CEO
(BR)CSO
(BR)EBO

I

CBO

h

FE

15 45 – V
10 15 – V

– 70 – V
– 6.2 – V
– – 200 nA

40 150 – –

kHz

dB

AUXILIARY TRANSISTOR DYNAMIC CHARACTERISTICS

Current Gain Bandwidth Product (VCE = 3.0 V)

Current Gain Bandwidth Product (IC = 3.0 mA)

Collector Base Capacitance (VCE = 3.0 V)

Collector Base Capacitance (IC = 0)

Collector Substrate Capacitance (VCS = 3.0 V)

Collector Substrate Capacitance (IC = 0)

2

f

T

C

CB

C

CS

– 500 – MHz

– 2.0 – pF

– 3.3 – pF

MOTOROLA ANALOG IC DEVICE DATA

Mod In

Mod Out

0.0047

MC2833

Figure 1. T est Circuit

µ

H

5.1

1

µ

F

2

3

16.605 MHz

16

15

14

68 pF

39 pF

RF Out

Crystal:

f

= 16.605 MHz

o

C

= 30 pF

L

C

= 6.1 pF

o

R

= 10 Ω Max

S

Mic Amp

Out

Mic Amp

Emitter 1

Base 1

In

6.3 k

4

220 k

MC2833

5

6

7

89

13

12

11

10

+

47

µ

F

Base 2

Emitter 2

Collector 2

0.01

Collector 1

µ

F

Figure 2. Single Chip VHF Narrowband FM Transmitter

X1Lt

1

Variable

2

Reactance

3

4

Mic Amp

Buffer

+–

5

µ

Q2

6

7

V

REF

Q1

8

Cc2

= 9.0 Vdc

V

CC

Audio
Input

Deviation
Adjust

Dynamic

Mike

1.0 k

Electret
(alternate)
Microphone
and biasing

120 k

4.7 k

100 k

2.7 k

Rb1

4700 p

100 k

4700 p

1.0

Re1

470 p

NOTES:

1. Components versus output frequency:

Output RF

49.7 MHz
76 MHz

144.6 MHz

X1 (MHz) Lt (µH) L1 (µH) L2 (µH) Re1 Rb1 Cc1 Cc2 C1 C2 C3 C4 C5

16.5667

12.6000

12.05

3.3–4.7

5.1

5.6

0.22

0.22

0.15

0.22

0.22

0.10

330
150
150

2. Crystal X1 is fundamental mode, calibrated for parallel resonance with a 32 pF load. The final output frequency is generated by frequency multiplication within

2. the MC2833 IC. The RF output buffer (Pin 14) and Q2 transistor are used as a frequency tripler and doubler, respectively, in the 76 and 144.6 MHz transmitters.

2. The Q1 output transistor is a linear amplifier in the 49.7 MHz and 76 MHz transmitters, and a frequency doubler in the 144.6 MHz transmitter.

3. All coils used are 7 mm shielded inductors, CoilCraft series M1 175A, M1282A–M1289A, M1312A or equivalent.

4. Power output is ≈ + 10 dBm for 49.7 MHz and 76 MHz transmitters, and ≈ + 5.0 dBm for the 144.6 MHz transmitter at VCC = 8.0 V. Power output drops with

4. lower VCC.

5. All capacitors in microfarads, inductors in Henries and resistors in Ohms unless otherwise specified.

6. Other frequency combinations may be set–up by simple scaling of the 3 examples shown.

RF

Osc.

390 k
300 k
220 k

16

15

14

13

12

11

10

470 p

9

33 p
68 p
47 p

47 p

56 p

51 p

L1

C3

0.22

33 p
10 p
10 p

Cc1

C1

µ

390 k

1.0 k

C2

C4

L2

C5

1000 p

RF Output

5.0 to 10 dBm
(see Note 4)

+

µ

F

1.0
tantalum

33 p
68 p
68 p

470 p
470 p
1000 p

33 p
12 p
18 p

47 p
20 p
12 p

220 p
120 p

33 p

MOTOROLA ANALOG IC DEVICE DATA

3

MC2833

Figure 3. Buffer/Multiplier (x3, Pin 14)

(16 MHz Fundamental)

Figure 5. Doubler Output 76 MHz (Pin 11) Figure 6. Spectrum

Figure 4. Input to Doubler (Pin 13)

(49.7 MHz x 3 Component)

Figure 7. Output Spectrum (49.7 MHz)

4

38 MHz 76 MHz

Figure 8. Modulation Spectrum

(1.0 kHz Showing Carrier Null)

– 43 dB

MOTOROLA ANALOG IC DEVICE DATA

MC2833

Figure 9. 144.6 MHz/x12 Multiplier

Figure 10. Circuit Side View

OUT

GND

VCC

Figure 11. Ground Plane on Component Side

IN

MC2833P

MC2833P

MOTOROLA ANALOG IC DEVICE DATA

5

MC2833

Figure 12. Component View

2.0

″

Lt

X1 XTAL

4.7 Kp

100K

100K

1K

1.0

2.7K

4.7 Kp

120K

Re1

470p

4.7 K
Cc2

Rb1

MC2833P

NOTES: • Positive artwork provided.

• Drill holes must be plated to ensure making all ground (VEE) connections!

• Resistors labelled * are used for biasing of electret microphone if used.

• Capacitors labelled ″SM″ are silver mica.

• Final board size 1.5″ × 2.0″.

56p

SM

MC2833P

1K

470p

C4

SM

47p

390K

C2

L2

Cc1

C3

C1

1.0

SM

1Kp

SM

C5

51p

SM

SM

L1

µ

.22 H

1.5

″

6

MOTOROLA ANALOG IC DEVICE DATA

Figure 13. Circuit Schematic

Pin 9 Pin 7

MC2833

Pin 4

50 50

820

Pin 15

Pin16

Pin 1

Pin 2

Pin 10

10 k

2.2 k

2.2 k

Pin 8

Pin 11 Pin 12

Pin 13

Pin 14

120

120

520

470

4.7 k

570

610

15 k

570

2.2 k

15 k

8.5 k

20.2 k

24 k

6.8 k

6.8 k

Pin 5

18 k

18 k

18 k

9.7 k

Pin 3

MOTOROLA ANALOG IC DEVICE DATA

8 k

4.7 k

2.2 k

18 k

56 k

Pin 6

7

–T–

MC2833

OUTLINE DIMENSIONS

PLASTIC PACKAGE

–A–

916

B

18

F

C

S

–T–

H

G

D

16 PL

0.25 (0.010) T

K

M

–A–

16 9

–B–

18

G

K

C

SEATING

PLANE

D

16 PL

0.25 (0.010) A

M

S

B

T

S

CASE 648–08

SEATING
PLANE

M

A

PLASTIC PACKAGE

CASE 751B–05

8 PLP

0.25 (0.010) B

M

P SUFFIX

ISSUE R

J

D SUFFIX

(SO–16)
ISSUE J

M

NOTES:

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

2. CONTROLLING DIMENSION: INCH.

3. DIMENSION L TO CENTER OF LEADS WHEN
FORMED PARALLEL.

4. DIMENSION B DOES NOT INCLUDE MOLD FLASH.

5. ROUNDED CORNERS OPTIONAL.

DIM MIN MAX MIN MAX

L

M

S

R

X 45

_

F

J

A 0.740 0.770 18.80 19.55
B 0.250 0.270 6.35 6.85
C 0.145 0.175 3.69 4.44
D 0.015 0.021 0.39 0.53
F 0.040 0.70 1.02 1.77
G 0.100 BSC 2.54 BSC
H 0.050 BSC 1.27 BSC

J 0.008 0.015 0.21 0.38
K 0.110 0.130 2.80 3.30
L 0.295 0.305 7.50 7.74
M 0 10 0 10
S 0.020 0.040 0.51 1.01

NOTES:

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

2. CONTROLLING DIMENSION: MILLIMETER.

3. DIMENSIONS 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. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.127 (0.005) TOTAL
IN EXCESS OF THE D DIMENSION AT
MAXIMUM MATERIAL CONDITION.

DIM MIN MAX MIN MAX

A 9.80 10.00 0.386 0.393
B 3.80 4.00 0.150 0.157
C 1.35 1.75 0.054 0.068
D 0.35 0.49 0.014 0.019

F 0.40 1.25 0.016 0.049

G 1.27 BSC 0.050 BSC

J 0.19 0.25 0.008 0.009
K 0.10 0.25 0.004 0.009
M 0 7 0 7

P 5.80 6.20 0.229 0.244
R 0.25 0.50 0.010 0.019

MILLIMETERSINCHES

____

INCHESMILLIMETERS

____

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
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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
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Opportunity/Affirmative Action Employer.

Mfax is a trademark of Motorola, Inc.

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INTERNET: http://www.mot.com/SPS/

8

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MOTOROLA ANALOG IC DEVICE DATA

MC2833/D