Device Operating
Temperature Range Package
SEMICONDUCTOR
TECHNICAL DATA
LOW POWER
FM TRANSMITTER
SYSTEM
ORDERING INFORMATION
MC2833D
MC2833P TA = – 30 to +75°CSO–16
Plastic DIP
PIN CONNECTIONS
Order this document by MC2833/D
D SUFFIX
PLASTIC PACKAGE
CASE 751B
(SO–16)
P SUFFIX
PLASTIC PACKAGE
CASE 648
Tr 1
Base
Tr 1
Emitter
Gnd
Mic Amp
Input
9
10
11
12
13
14
15
16
8
7
6
5
4
3
2
1
Variable
Reactance
Output
Decoupling
Modulator
Input
Mic Amp
Output
Tr 1
Collector
VCC
Tr 2
Collector
Tr 2
Emitter
Tr 2
Base
RF
Output
RF
Osc
1
MOTOROLA ANALOG IC DEVICE DATA
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 (ICC = 2.9 mA Typ)
•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)
Representative Block Diagram
+–
2
16
15
14
13
12
11
10
9
8
7
6
5
4
3
1
Variable
Reactance
RF
Osc
Buffer
Mic
Amp
VREF
Motorola, Inc. 1996 Rev 1
MC2833
2MOTOROLA ANALOG IC DEVICE DATA
MAXIMUM RATINGS
Ratings Symbol Value Unit
Power Supply Voltage VCC 10 (max) V
Operating Supply Voltage Range VCC 2.8–9.0 V
Junction Temperature TJ+ 150 °C
Operating Ambient Temperature TA– 30 to + 75 °C
Storage Temperature Range Tstg – 65 to + 150 °C
ELECTRICAL CHARACTERISTICS (VCC = 4.0 V, TA = 25°C, unless otherwise noted)
Characteristics Symbol Pin Min Typ Max Unit
Drain Current (No input signal) ICC 10 1.7 2.9 4.3 mA
FM MODULATOR
Output RF Voltage (fo = 16.6 MHz) Vout RF 14 60 90 130 mVrms
Output DC V oltage (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) SEN 3
14 7.0
–10
–15
–Hz/mVdc
Maximum Deviation (fo = 16.6 MHz)
Maximum Deviation (Vin = 0 V to 2.0 V) Fdev 3
14 3.0
–5.0
–10
–kHz
MIC AMPLIFIER
Closed Loop Voltage Gain (Vin = 3.0 mV rms)
Closed Loop Voltage Gain (fin = 1.0 kHz) Av4
527
–30
–33
–dB
Output DC V oltage (No input signal) Vout dc 4 1.1 1.4 1.7 V
Output Swing Voltage (Vin = 30 mVrms)
Output Swing Voltage (fin = 1.0 kHz) Vout p–p 4 0.8 1.2 1.6 Vp–p
Total Harmonic Distortion (Vin = 3.0 mVrms)
Total Harmonic Distortion (fin = 1.0 kHz) THD 4 – 0.15 2.0 %
AUXILIARY TRANSISTOR STATIC CHARACTERISTICS
Characteristics Symbol Min Typ Max Unit
Collector Base Breakdown Voltage (IC = 5.0 µA) V(BR)CBO 15 45 – V
Collector Emitter Breakdown Voltage (IC = 200 µA) V(BR)CEO 10 15 – V
Collector Substrate Breakdown Voltage (IC = 50 µA) V(BR)CSO – 70 – V
Emitter Base Breakdown Voltage (IE = 50 µA) V(BR)EBO – 6.2 – V
Collector Base Cut Off Current (VCB = 10 V)
Collector Base Cut Off Current (IE = 0) ICBO – – 200 nA
DC Current Gain (IC = 3.0 mA)
DC Current Gain (VCE = 3.0 V) hFE 40 150 – –
AUXILIARY TRANSISTOR DYNAMIC CHARACTERISTICS
Current Gain Bandwidth Product (VCE = 3.0 V)
Current Gain Bandwidth Product (IC = 3.0 mA) fT– 500 – MHz
Collector Base Capacitance (VCE = 3.0 V)
Collector Base Capacitance (IC = 0) CCB –2.0 – pF
Collector Substrate Capacitance (VCS = 3.0 V)
Collector Substrate Capacitance (IC = 0) CCS –3.3 – pF
MC2833
3
MOTOROLA ANALOG IC DEVICE DATA
Figure 1. Test Circuit
Figure 2. Single Chip VHF Narrowband FM Transmitter
Electret
(alternate)
Microphone
and biasing
470 p
1.0
µ
F
tantalum
+
1000 p
C5
RF Output
5.0 to 10 dBm
(see Note 4)
C4
C3
L1
L2
C2
1.0 k
390 k
0.22
µ
C1
Cc1
47 p
Q2
Cc2
VCC
=
9.0 Vdc
Rb1
470 p Q1
Re1
2.7 k
4.7 k
Dynamic
Mike
Audio
Input
100 k
Deviation
Adjust 120 k
X1Lt
1.0 k
56 p
51 p
VREF
Buffer
RF
Osc.
Variable
Reactance
Mic Amp
9
16
15
14
13
12
1
2
3
4
5
6
7
8
10
11
+–
1.0
µ
100 k
4700 p
4700 p
Crystal:
39 pF
68 pF
+
47
µ
F0.01
µ
F
Collector 1
Collector 2
Base 2
Emitter 2
Base 1
Emitter 1
Mic Amp
Out
RF Out
0.0047
µ
F
Mod Out
16.605 MHz
5.1
µ
H
Mod In
Mic Amp
In
220 k
6.3 k
MC2833
6
7
1
2
3
4
5
89
10
11
12
13
14
15
16
fo
CL
Co
RS
= 16.605 MHz
= 30 pF
= 6.1 pF
= 10 Ω Max
NOTES:
1. Components versus output frequency:
Output RF X1 (MHz) Lt (µH) L1 (µH) L2 (µH) Re1 Rb1 Cc1 Cc2 C1 C2 C3 C4 C5
49.7 MHz
76 MHz
144.6 MHz
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
390 k
300 k
220 k
33 p
68 p
47 p
33 p
10 p
10 p
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
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 M1175A, 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.
MC2833
4MOTOROLA ANALOG IC DEVICE DATA
Figure 3. Buffer/Multiplier (x3, Pin 14)
(16 MHz Fundamental)
38 MHz 76 MHz
– 43 dB
Figure 4. Input to Doubler (Pin 13)
(49.7 MHz x 3 Component)
Figure 5. Doubler Output 76 MHz (Pin 11) Figure 6. Spectrum
Figure 7. Output Spectrum (49.7 MHz) Figure 8. Modulation Spectrum
(1.0 kHz Showing Carrier Null)
MC2833
5
MOTOROLA ANALOG IC DEVICE DATA
Figure 9. 144.6 MHz/x12 Multiplier
MC2833P
VCC IN
GND
OUT
MC2833P
Figure 10. Circuit Side View
Figure 11. Ground Plane on Component Side
MC2833
6MOTOROLA ANALOG IC DEVICE DATA
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″.
MC2833P
1.5
″
2.0
″
C4
SM
390K
1K
2.7K Rb1
1K
120K
100K
1.0
100K
51p
SM
56p
SM
L1
L2
X1 XTAL
Lt
1.0
Re1
4.7 Kp
4.7 Kp
470p
Cc2
470p
47p
Cc1
1Kp
C2
C1
SM
C3
SM
C5
SM
.22 H
µ
4.7 K
MC2833P
Figure 12. Component View
MC2833
7
MOTOROLA ANALOG IC DEVICE DATA
Pin 9 Pin 7
Pin 11 Pin 12
Pin 8
Pin 13
Pin 10
Pin 15
Pin16
Pin 1
Pin 2
Pin 3
Pin 14
Pin 4
Pin 5
Pin 6
10 k
2.2 k
2.2 k
8 k
4.7 k
610
570
4.7 k
120
120
470
520
2.2 k
2.2 k
570
15 k
820
50 50
15 k
24 k
6.8 k
6.8 k
9.7 k
18 k
18 k
18 k
8.5 k
20.2 k
18 k
56 k
Figure 13. Circuit Schematic
MC2833
8MOTOROLA ANALOG IC DEVICE DATA
OUTLINE DIMENSIONS
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.
–A–
B
FC
S
HGD
J
L
M
16 PL
SEATING
18
916
K
PLANE
–T–
M
A
M
0.25 (0.010) T
DIM MIN MAX MIN MAX
MILLIMETERSINCHES
A0.740 0.770 18.80 19.55
B0.250 0.270 6.35 6.85
C0.145 0.175 3.69 4.44
D0.015 0.021 0.39 0.53
F0.040 0.70 1.02 1.77
G0.100 BSC 2.54 BSC
H0.050 BSC 1.27 BSC
J0.008 0.015 0.21 0.38
K0.110 0.130 2.80 3.30
L0.295 0.305 7.50 7.74
M0 10 0 10
S0.020 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.
18
16 9
SEATING
PLANE
F
J
M
RX 45
_
G
8 PLP
–B–
–A–
M
0.25 (0.010) B S
–T–
D
K
C
16 PL
S
B
M
0.25 (0.010) A S
T
DIM MIN MAX MIN MAX
INCHESMILLIMETERS
A9.80 10.00 0.386 0.393
B3.80 4.00 0.150 0.157
C1.35 1.75 0.054 0.068
D0.35 0.49 0.014 0.019
F0.40 1.25 0.016 0.049
G1.27 BSC 0.050 BSC
J0.19 0.25 0.008 0.009
K0.10 0.25 0.004 0.009
M0 7 0 7
P5.80 6.20 0.229 0.244
R0.25 0.50 0.010 0.019
____
D SUFFIX
PLASTIC PACKAGE
CASE 751B–05
(SO–16)
ISSUE J
P SUFFIX
PLASTIC PACKAGE
CASE 648–08
ISSUE R
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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. “Typical” 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”
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MC2833/D
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