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The MC1350 is an integrated circuit featuring wide range AGC for use as
an IF amplifier in radio and TV over an operating temperature range of 0 ° to
+75
C.
IF AMPLIFIER
•
Power Gain: 50 dB Typ at 45 MHZ
Power Gain: 50 dB Typ at 58 MHZ
SEMICONDUCTOR
TECHNICAL DATA
•
AGC Range: 60 dB Min, DC to 45 MHz
•
Nearly Constant Input & Output Admittance over the Entire AGC Range
•
Y21 Constant ( –3.0 dB) to 90 MHz
•
Low Reverse Transfer Admittance: < < 1.0 m mho Typ
•
P SUFFIX
PLASTIC PACKAGE
CASE 626
12 V Operation, Single–Polarity Power Supply
8
1
MAXIMUM RATINGS (T A = +25 ° C, unless otherwise noted.)
Rating
Symbol
Value
Unit
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SO–8)
Power Supply Voltage
V +
+18
Vdc
8
1
Output Supply Voltage
V 1 , V 8
+18
Vdc
AGC Supply Voltage
V AGC
V +
Vdc
Differential Input Voltage
V in
5.0
Vdc
ORDERING INFORMATION
Power Dissipation (Package Limitation)
Plastic Package
Derate above 25 ° C
P D
625
5.0
mW
mW/ ° C
Device
Operating
Temperature Range
Package
MC1350P
MC1350D
Plastic DIP
SO–8
T A = 0
°
to +75
°
C
Operating Temperature Range
T A
0 to +75
° C
Figure 1. Typical MC1350 Video IF Amplifier and MC1330 Low–Level Video Detector Circuit
0.0 02 m F
470
220
+1 8 Vdc
18V
Auxiliary Video
Output
0.002
m
F
0.1 m F
3.3k
0.0 01
m
F
6 8p F
10V
4
3
2
1
22
7
6
5
4
Primary Video
an d Sound Output
T1
7.7V
45MHz
Input
50
MC1350
MC1330AP
3.9k
0
5
6
7
8
12pF
8
3
33 p F
2
1
AFT Output
3.9k
L1
T1
AGC
5
,
3
,
9
1 6
16
5
6
1
,
10
3 ,
16
Turns Turns
All windings #30 AWG tinned nylon acetate
wire tuned with Carbonyl E or J slugs.
4
Turns
L1 wound with #26 AWG tinned nylon
acetate wire tuned by distorting winding.
W
Motorola, Inc. 1995
MOTOROLA ANALOG IC DEVICE DATA
1
°
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MC1350
ELECTRICAL CHARACTERISTICS (V + = +12 Vdc, T A = +25 ° C, unless otherwise noted.)
Characteristics
Symbol
Min
Typ
Max
Unit
AGC Range, 45 MHz (5.0 V to 7.0 V) (Figure 1)
60
68
–
dB
Power Gain (Pin 5 grounded via a 5.1 k W resistor)
f = 58 MHz, BW = 4.5 MHz
A p
dB
See Figure 6(a)
–
46
–
–
48
50
58
62
–
–
–
–
f = 45 MHz, BW = 4.5 MHz
See Figure 6(a), (b)
f = 10.7 MHz, BW = 350 kHz
See Figure 7
f = 455 kHz, BW = 20 kHz
Maximum Differential Voltage Swing
0 dB AGC
–30 dB AGC
V O
–
–
20
8.0
–
–
V pp
Output Stage Current (Pins 1 and 8)
I 1 + I 8
–
5.6
–
mA
Total Supply Current (Pins 1, 2 and 8)
I S
–
14
17
mAdc
Power Dissipation
P D
–
168
204
mW
DESIGN PARAMETERS, Typical Values (V + = +12 Vdc, T A = +25 ° C, unless otherwise noted.)
Frequency
Parameter
Symbol
455 kHz 10.7 MHz 45 MHz
58 MHz
Unit
Single–Ended Input Admittance
g 11
b 11
0.31
0.022
0.36
0.50
0.39
2.30
0.5
2.75
mmho
Input Admittance Variations with AGC
(0 dB to 60 dB)
D g 11
D b 11
–
–
–
–
60
0
–
–
m mho
Differential Output Admittance
g 22
b 22
4.0
3.0
4.4
110
30
390
60
510
m mho
Output Admittance Variations with AGC
(0 dB to 60 dB)
D g 22
D b 22
–
–
–
–
4.0
90
–
–
m mho
Reverse Transfer Admittance (Magnitude)
|y 12 |
< < 1.0
< < 1.0
< < 1.0
< < 1.0
m mho
Forward Transfer Admittance
Magnitude
Angle (0 dB AGC)
Angle (–30 dB AGC)
|y 21 |
< y 21
< y 21
160
–5.0
–3.0
160
–20
–18
200
–80
–69
180
–105
–90
mmho
Degrees
Degrees
Single–Ended Input Capacitance
C in
7.2
7.2
7.4
7.6
pF
Differential Output Capacitance
C O
1.2
1.2
1.3
1.6
pF
Figure 2. Typical Gain Reduction
Figure 3. Noise Figure versus Gain Reduction
0
22
20
18
16
14
12
10
8.0
6.0
I AGC = 0.1 mA
20
58 MHz
40
45 MHz
(Figure 6)
60
(Figures 6 and 7)
I AGC = 0.2 mA
80
4.0
5.0
6.0
7.0
0
10
20
30
40
V AGC , SUPPLY VOLTAGE (V)
GAIN REDUCTION (dB)
2
MOTOROLA ANALOG IC DEVICE DATA
11023801.010.png 11023801.011.png
MC1350
GENERAL OPERATING INFORMATION
The input amplifiers (Q1 and Q2) operate at constant
emitter currents so that input impedance remains
independent of AGC action. Input signals may be applied
single–ended or differentially (for ac) with identical results.
Terminals 4 and 6 may be driven from a transformer, but a dc
path from either terminal to ground is not permitted.
AGC action occurs as a result of an increasing voltage on
the base of Q4 and Q5 causing these transistors to conduct
more heavily thereby shunting signal current from the
interstage amplifiers Q3 and Q6. The output amplifiers are
supplied from an active current source to maintain constant
quiescent bias thereby holding output admittance nearly
constant. Collector voltage for the output amplifier must be
supplied through a center–tapped tuning coil to Pins 1 and 8.
The 12 V supply (V + ) at Pin 2 may be used for this purpose,
but output admittance remains more nearly constant if a
separate 15 V supply (V + + ) is used, because the base
voltage on the output amplifier varies with AGC bias.
Figure 4. Circuit Schematic
AGC Amplifier Section
2.0V+
1.47k
(+)
8
Input 70
V + +
Outp ut
Figure 5. Frequency Response Curve
(45 MHz and 58 MHz)
5.0
5.53k
12.1
k
470
470
Q 6
Q 3 Q 4
Q5
1 ( – )
2.0k
4 ( – )
Inputs
Q7
Q10
1.4k
Q8 45 Q 9
Q1
66
Q 2
2.8k 200 200 2.8k
6 ( + )
5.0k
5.0k
1.1k
1.1k
8.4k
5.6k
1.9k
Scale: 1.0 MHz/cm
200
7
Gnd
Input Amplifier Section
Bias Supplies Output Amplifier Section
Figure 6. Power Gain, AGC and Noise Figure Test Circuits
(a) 45 MHz and 58 MHz
+12V
(b) Alternate 45 MHz
0.001 m F
0 .001
m
F
L P
L P
Input
0.68
m
H 0.1
+ 1 2V
Input
R S = 50
W
C2
L P
L1
1.5–20pF
0.1
0.00 1
m F
R S = 50 W
C1
0.33
m
H
Output
R L = 50
4
3
2
1
C1
L1
4
3
2
1
T1
W
R L = 50
W
Out p ut
MC1350
MC1350
5
6
7
8
5.1k
C2
5.1k
5
6
7
8
5 .1k
V AGC
V AGC *
0.001
m
F
0.001
C3
0.001 m F
0.001 m F
0.001
*Connect to ground for maximum power gain test.
All power supply chokes (Lp), are self–resonant at input frequency. L P . 20 k W .
See Figure 5 for Frequency Response Curve.
L1
Ferrite Core
14 Turns 28 S.W.G.
coil form
L1 @ 58 MHz = 6 Turns on a 1/4 , coil form
,
C1
C2
C3
5–25 pF
5–25 pF
5–25 pF
T1 Primary Winding
Secondary Winding
coil form, center–tapped, #25 AWG
= 2 Turns centered over Primary Winding @ 45 MHz
= 1 Turn @ 58 MHz
= Carbonyl E or J
,
Slug
45 MHz
58 MHz
L1
0.4 m H
Q . 100
0.3 m H
Q . 100
T1
1.3
m
H to 3.4
m
H
Q
.
100 @ 2.0
m
H
1.2
m
H to 3.8
m
H
Q
.
100 @ 2.0
m
H
C1
50 pF to160 pF
8.0 pF to 60 pF
C2
8.0 pF to 60 pF
3.0 pF to 35 pF
MOTOROLA ANALOG IC DEVICE DATA
3
L1 @ 45 MHz = 7 1/4 Turns on a 1/4
= 18 Turns on a 1/4
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MC1350
Figure 7. Power Gain and AGC Test Circuit
(455 kHz and 10.7 MHz)
Input
R S = 50
W
L1
12 V
Component
C1
C2
C3
C4
C5
C8
C7
L1
T1
Frequency
455 kHz
10.7 MHz
C2
C3
C4
–
–
0.05
80–450 pF
5.0–80 pF
0.001
C1
4
3
2
1
T1
F
0.05 m F
0.001 m F
0.05
m
F
0.05 m F
36 pF
0.05
m
C5
Output
R S = 50
MC1350
W
F
0.05 m F
–
Note 1
m
F
0.05 m F
4.6 m F
Note 2
m
5.1k
5
6
7
8
V AGC *
*Grounded for
maximum power gain.
C7
C6
H (center–tapped)
NOTES: 1. Q u = 140 at 455 kHz
NOTES: 1. Primary: Secondary turns ratio 13
NOTES: 2. Primary: 6.0 m H
NOTES: 2. Primary winding = 24 turns #36 AWG
NOTES: 2. (close–wound on 1/4 , dia. form)
NOTES: 2. Core = Carbonyl E or J
NOTES: 2. Secondary winding = 1–1/2 turns #36 AWG, 1/4 , dia.
NOTES: 2. (wound over center–tap)
m
Figure 8. Single–Ended Input Admittance
Figure 9. Forward Transfer Admittance
5.0
500
- Y 21 (–30 dB gain)
0
4.0
400
- Y 21 (max gain)
–40
3.0
b 11
300
–80
2.0
200
–120
1.0
100
Y21
–160
g 11
0
10
20
30
40 50
70
100
0
1.0
2.0
3.0
5.0
10
20
30 50 100
–200
f, FREQUENCY (MHz)
f, FREQUENCY (MHz)
Figure 10. Differential Output Admittance
Figure 11. Differential Output Voltage
1.0
8.0
(Single–ended output
admittance exhibits
twice these values.)
7.0
0.8
6.0
V + + = 14 V
b 22
5.0
0.6
4.0
V + + = 12 V
0.4
3.0
0.2
2.0
g 22
1.0
0
0
10
20
30
40 50
70
100
0
10
20
30
40
50
60
70
80
f, FREQUENCY (MHz)
GAIN REDUCTION (dB)
4
MOTOROLA ANALOG IC DEVICE DATA
NOTES: 1. Primary: 120
11023801.020.png
MC1350
OUTLINE DIMENSIONS
8
5
P SUFFIX
PLASTIC PACKAGE
CASE 626–05
ISSUE K
NOTES:
1. DIMENSION L TO CENTER OF LEAD WHEN
FORMED PARALLEL.
2. PACKAGE CONTOUR OPTIONAL (ROUND OR
SQUARE CORNERS).
3. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
–B–
1
4
F
MILLIMETERS
INCHES
NOTE 2
–A–
DIM MIN
MAX
MIN
MAX
L
A
9.40 10.16 0.370 0.400
B
6.10
6.60 0.240 0.260
C
3.94
4.45 0.155 0.175
D
0.38
0.51 0.015 0.020
C
F
1.02
1.78 0.040 0.070
G
2.54 BSC
0.100 BSC
H
0.76
1.27 0.030 0.050
–T–
SEATING
PLANE
J
J
0.20
0.30 0.008 0.012
K
2.92
3.43 0.115 0.135
N
L
7.62 BSC
0.300 BSC
M
M
–––
10
–––
10
D
K
N
0.76
1.01 0.030 0.040
H
G
0.13 (0.005)
M
T
A
M
B M
–A–
D SUFFIX
PLASTIC PACKAGE
CASE 751–05
(SO–8)
ISSUE N
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.
8
5
–B–
4X P
0.25 (0.010) M B M
1
4
G
MILLIMETERS
INCHES
DIM MIN
MAX
MIN
MAX
R
X 45
F
A
4.80
5.00 0.189 0.196
C
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
–T–
SEATING
PLANE
F
0.40
1.25 0.016 0.049
K
J
G
1.27 BSC
0.050 BSC
M
8X D
J
0.18
0.25 0.007 0.009
K
0.10
0.25 0.004 0.009
0.25 (0.010) M T B S
A
S
M
0
7
0
7
P
5.80
6.20 0.229 0.244
R
0.25
0.50 0.010 0.019
MOTOROLA ANALOG IC DEVICE DATA
5
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