Datasheet MC1490P Datasheet (Motorola)

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The MC1490 is an integrated circuit featuring wide–range AGC for use in
RF/IF amplifiers and audio amplifiers over the temperature range, –40° to
+85°C.

• High Power Gain:50 dB Typ at 10 MHz

45 dB Typ at 60 MHz
35 dB Typ at 100 MHz

• Wide Range AGC: 60 dB Min, DC to 60 MHz

• 6.0 V to 15 V Operation, Single Polarity Supply

• See MC1350D for Surface Mount

Order this document by MC1490/D



WIDEBAND AMPLIFIER

WITH AGC

SEMICONDUCTOR

TECHNICAL DATA

MAXIMUM RATINGS

Power Supply Voltage V
AGC Supply V
Input Differential Voltage V
Operating Temperature Range T
Storage Temperature Range T
Junction Temperature T

(TA = +25°C, unless otherwise noted.)

Rating Symbol Value Unit

CC

AGC

ID

A

stg

J

+18 Vdc

V

CC

5.0 Vdc

–40 to +85 °C

–65 to +150 °C

+150 °C

ORDERING INFORMATION

Device

MC1490P TA = –40° to +85°C Plastic

Operating

Temperature Range Package

Representative Schematic Diagram

2

V

CC

1.5 k

V

AGC

(–)
(+)

70

5

470

2.0 k

4

Inputs

6

66

5.0 k

1.1 k

Pins 3 and 7 should both be connected to circuit ground.

1.1 k

470

5.0 k

8.4 k

1.4 k

5.6 k

12.1 k5.5 k

2.8 k

1.9k

200

Substrate

45

200

7

200

3

2.8 k

Vdc

8

(+)
Outputs

(–)

1

8

1

P SUFFIX

PLASTIC PACKAGE

CASE 626

PIN CONNECTIONS

Output

1

(–)

2

V

CC

GND

Inverting

Parameter Symbol 30 60 Unit

Input
Reflection
Coefficient

Output
Reflection
Coefficient

Forward
Transmission
Coefficient

Reverse
Transmission
Coefficient

4

Input

SCATTERING PARAMETERS

(VCC = +12 Vdc, TA = +25°C, Zo = 50 Ω)

3

(Top View)

|S11|

θ11

|S22|

θ22

|S21|

θ21

S

12

θ12

–+

0.95
–7.3

0.99
–3.0

16.8
128

0.00048

84.9

8

7

6

5

f = MHz

Typ

Output
(+)

Substrate
Ground

Noninverting
Input

AGC
Input

0.93
–16–deg

0.98

–5.5–deg

14.7

64.3–deg

0.00092

79.2–deg

MOTOROLA ANALOG IC DEVICE DATA

 Motorola, Inc. 1996 Rev 5

1

MC1490

ELECTRICAL CHARACTERISTICS

Characteristic

Power Supply Current Drain – I
AGC Range (AGC) 5.0 V Min to 7.0 V Max 19 M
Output Stage Current (Sum of Pins 1 and 8) – I
Single–Ended Power Gain RS = RL = 50 Ω 19 G
Noise Figure RS = 50 Ohms 19 NF – 6.0 – dB
Power Dissipation – P

Figure 1. Unneutralized Power Gain versus

Frequency (T uned Amplifier, See Figure 19)

70

VCC = 12 Vdc

60
50
40
30
20

(SINGLE–ENDED OUTPUT)

, UNNEUTRALIZED GAIN (dB)

P

10

G

0

10

20 50 100 200

f, FREQUENCY (MHZ)

(VCC = 12 Vdc, f = 60 MHz, BW = 1.0 MHz, TA = 25°C)

Figure Symbol Min Typ Max Unit

CC

AGC

O

P

D

Figure 2. V oltage Gain versus Frequency

(Video Amplifier, See Figure 20)

50

40

30

20

10

, SINGLE–ENDED VOLTAGE GAIN (dB)

C

A

0

0.1 1.0 10 100 1000

– – 17 mA

–60 – – dB

4.0 – 7.5 mA
40 – – dB

– 168 204 mW

VCC = 12 VdcRL = 1.0 k

RL = 100

Ω

RL = 10

Ω

f, FREQUENCY (MHZ)

Figure 3. Dynamic Range: Output Voltage versus

Input V oltage (Video Amplifier, See Figure 20)

10

VCC = 12 Vdc

5.0
V

= 0 V

5(AGC)

f = 1.0 MHz

1.0

0.5

0.1

, OUTPUT VOLTAGE (V RMS)

0.05

O

V

0.01

0.1 0.2 0.5 1.0 2.0 5.0 10 20 50 100

RL = 1.0 k

100

Ω

en, INPUT VOLTAGE (mVRMS)

10

Ω

2

Figure 4. V oltage Gain versus Frequency

(Video Amplifier, See Figure 20)

50

VCC = 6.3 Vdc

40

30

20

10

, SINGLE VOLTAGE GAIN (dB)

V

A

0

0.3 0.5 1.0 3.0 5.0 10 30 50 100 300

RL = 1.0 k

100

Ω

Ω

f, FREQUENCY (MHZ)

MOTOROLA ANALOG IC DEVICE DATA

MC1490

Figure 5. V oltage Gain and Supply Current versus

Supply V oltage (Video Amplifier, See Figure 20)

45

f = 1.0 MHz

40

Rl = 1.0

Ω

A

V

35
30
25

I

CC

20
15

10

, SINGLE–ENDED VOLTAGE GAIN (dB)

V

A

5.0
0 2.0 4.0 6.0 8.0 10 12 14 16

VCC, SUPPLY VOLTAGE (V)

Figure 7. T ypical Gain Reduction

versus AGC Current

0
10
20

100 < R
30
40

50

, GAIN REDUCTION (dB)

R

60

G

70
80

–40 –20 0 20 40 60 80 100 120 140 160

I

AGC CURRENT (µA)

AGC

AGC

< 100 k

24
21

18
15
12

9.0

6.0

3.0
0

Figure 6. T ypical Gain Reduction

versus AGC Voltage

0

10
20

V

R(AGC)

R

AGC

30
40

50

, GAIN REDUCTION (dB)

R

60

G

, SUPPLY CURRENT (mAdc)

C

I

70

R

AGC

= 0

R

= 5.6 k

Ω

AGC

Ω

80

0 3.0 6.0 9.0 12 15 18 21 24 27 30

V

AGC VOLTAGE (Vdc)

R(AGC),

Figure 8. Fixed T uned Power Gain Reduction versus

T emperature (See Test Circuit, Figure 19)

50
40
30
20
10

,POWER GAIN (dB)

0

p

G

–10
–20

5.0 5.2 5.4 5.6 5.8 6.0 6.2 6.4 6.6 6.8 7.0

VCC = 12 Vdc
f = 60 MHz

R

= 5.6 k

AGC

V

R(AGC),

Ω

+75°C

AGC VOLTAGE (Vdc)

5

R

AGC

0°C

+125°C

MC1490P

= 100 k

+25°C

–55°C

Ω

Figure 9. Power Gain versus Supply V oltage

(See T est Circuit, Figure 19)

80
70
60

f = 60 MHz

50
40
30

, POWER GAIN (dB)

p

20

G

G

P

10

0

0 2.0 4.0 6.0 8.0 10 12 14 16

VCC, POWER SUPPLY VOLTAGE (V)

MOTOROLA ANALOG IC DEVICE DATA

Figure 10. Noise Figure versus Frequency

10

9.0

8.0

7.0

6.0

5.0

4.0

3.0

NF, NOISE FIGURE (dB)

2.0

1.0
0

15 20 25 30 35 40 50 60 70 80 90 100

f, FREQUENCY (MHz)

RS Optimized

for minimum NF

150

3

MC1490

Figure 11. Noise Figure versus

Source Resistance

20
18

VCC = 12 Vdc

16
14

12
10

8.0

6.0

NF, NOISE FIGURE (dB)

4.0

2.0
0

100 200 400 600 1.0 k 2.0 k 4.0 k 10 k

RS, SOURCE RESISTANCE (Ω)

f = 105 MHz

f = 60 MHz

f = 30 MHz

Figure 13. Harmonic Distortion versus AGC Gain

Reduction for AM Carrier (For Test Circuit, See Figure 14)

40

f = 10.7 MHz
Modulation: 90 % AM, fm = 1.0 kHz

35

Load at Pin 8 = 2.0 k
EO = peak–to–peak envelope of

30

modulated 10.7 MHz carrier at Pin 8

25
20
15

MODULA TION (%)

10

5.0

HARMONIC DISTORTION IN DETECTED

0

01020304050607080

40
35
30
25
20
15

NOISE FIGURE (dB)

10

5
0

Ω

EO = 2400 mVpp

GR, GAIN REDUCTION (dB)

Figure 12. Noise Figure versus

AGC Gain Reduction

f = 30 MHz
BW = 1.0 MHz

Test circuit has tuned input
providing a source resistance
optimized for best noise figure.

0 –10 –20 –30 –40 –50 –60 –70 –80

GR, GAIN REDUCTION (dB)

760 mVpp

240 mVpp

Figure 14. 10.7 MHz Amplifier Gain ] 55 dB, BW ] 100 kHz

6
5

MC1490P

4

3

7

36 pF

8

L2

1

RFC

2

L2 = 20 turns, #22 AWG wire

on a T12–44 micro metal
Toroid core (–100 pF)

MOTOROLA ANALOG IC DEVICE DATA

0.0020.002

50

Ω

Load

+12 Vdc

0.002

V

AGC

10.7 MHz

Ω

Source)

(50

L1 = 24 turns, #22 AWG wire

5.6 k

82 pF

50–150 pF

on a T12–44 micro metal
Toroid core (–124 pF)

L1

4

MC1490

Figure 15. S11 and S22, Input and Output

Reflection Coefficient

Figure 16. S11 and S22, Input and Output

Reflection Coefficient

Figure 17. S21, Forward Transmission

Coefficient (Gain)

80 MHz

70 MHz

30 MHz

60 MHz

50 MHz

40 MHz

20 MHz

10 MHz

10

5.0

5.0

10

15

100 MHz

120 MHz

150 MHz

200 MHz

Figure 18. S12, Reverse Transmission

Coefficient (Feedback)

MOTOROLA ANALOG IC DEVICE DATA

5

MC1490

Figure 19. 60 MHz Power Gain T est Circuit Figure 20. Video Amplifier

0.0001

µ

Input

(50

F

V

AGC

V

R(AGC)

6

5

4

C2

L1

Ω

)

C1

R

AGC

L1 = 7 turns, #20 AWG wire, 5/16″ Dia.,5/8″long
L2 = 6 turns, #14 AWG wire, 9/16
C1,C2,C3 = (1–30) pF
C4 = (1–10) pF

Shield

7

MC1490P

3

2

0.001

″

Dia.,3/4″long

Figure 21. 30 MHz Amplifier

(Power Gain = 50 dB, BW [ 1.0 MHz)

µ

F

0.002

(1 – 30) pF

Input

(50

Ω

)

38 pF

T1: Primary = 17 turns, #20 AWG wire on a Toroid core, (T44–6).
Secondary = 2 turns, #20 AWG wire.

L1

V

AGC

5.6 k

0.002 µF

V

R(AGC)

L1 = 12 turns, #22 AWG wire on a Toroid core,

(T37–6 micro metal or equiv).

6
5

4

7

MC1490P

3

8

1

2

1 – 10 pF

µ

10

+12 Vdc

C3

H

0.001

µ

µ

F

1.0

C4

Output
(50

Ω

8

L2

1

µ

F

)

+12 Vdc

V

R(AGC)

V

R(AGC)

10 k

5.6 k

1.0

e

i

0.001

F

7

6

µ

MC1490P

F

5

4

3

µ

F

2

1.0 µF

0.001

8

1

µ

F

e

o

R

L

+12 Vdc

Figure 22. 100 MHz Mixer

V



6.0 V

C2

T1

RL = 50

Ω

Input from

local oscillator

(70 MHz)

Signal Input

(100 MHz)

(1 – 30) pF

AGC

7

L1

0.002

5
6
4

3

µ

MC1490P

2

F

0.002 µF

″

, ID Dia., 5/8″ long

8

1

100

(1 – 10) pF

L1 = 5 turns, #16 AWG wire, 1/4
L2 = 16 turns, #20 AWG wire on a Toroid core, (T44–6).

L2

(1 – 10) pF
(1 – 30) pF

IF Output

(30 MHz)

+12 Vdc

10

µ

H

Figure 23. Two–Stage 60 MHz IF Amplifier (Power Gain [ 80 dB, BW [ 1.5 MHz)

V

R(AGC)

5.1 k

Input

(50

T1: Primary Winding = 15 turns, #22 AWG wire, 1/4″ ID Air Core

24 pF

Ω

)

200 µH

(1–10) pF

µ

F

0.002

Secondary Winding = 4 turns, #22 AWG wire,
Coefficient of Coupling [ 1.0

4
5

6

+12 Vdc

Shield

7

8

MC1490P MC1490P

(1–10) pF

1

2

3

RFC

10

µ

H

6

10 k

(1–10) pF

T1

1.0 k

Shield

0.002

µ

F

39 pF

0.002

T2: Primary Winding = 10 turns, #22 AWG wire, 1/4″ ID Air Core

Secondary Winding = 2 turns, #22 AWG wire,
Coefficient of Coupling [ 1.0

7

4
5

6

3

µ

F

8

(1–10) pF

1

2

0.001 µF

RFC

T2

Output

(50

MOTOROLA ANALOG IC DEVICE DATA

Ω

)

DESCRIPTION OF SPEECH COMPRESSOR

F

MC1490

T able 1. Distortion versus Frequency

The amplifier drives the base of a PNP transistor operating
common–emitter with a voltage gain of approximately 20.
The control R1 varies the quiescent Q point of this transistor
so that varying amounts of signal exceed the level Vr. Diode
D1 rectifies the positive peaks of Q1’s output only when these
peaks are greater than Vr ] 7.0 V. The resulting output is
filtered by Cx, Rx.

Rx controls the charging time constant or attack time. Cx is
involved in both charge and discharge. R2 (the 150 kΩ and
input resistance of the emitter–follower Q2) controls the
decay time. Making the decay long and attack short is
accomplished by making Rx small and R2 large. (A
Darlington emitter–follower may be needed if extremely slow
decay times are required.)

The emitter–follower Q2 drives the AGC Pin 5 of the
MC1490P and reduces the gain. R3 controls the slope of
signal compression.

Figure 24. Speech Compressor

+12 V

requency

100 Hz 3.5% 12% 15% 27%
300 Hz 2% 10% 6% 20%

1.0 kHz 1.5% 8% 3% 9%
10 kHz 1.5% 8% 1% 3%
100 kHz 1.5% 8% 1% 3%

Notes: (1) Decay = 300 ms (3) Decay = 20 ms

(2) Cx = 7.5 µF (4) Cx = 0.68 µF

25 µF

0.001

1.0 k

Distortion Distortion

10 mV ei100 mV ei10 mV ei100 mV e

Notes 1 and 2 Notes 3 and 4

Attack = 20 ms Attack = 3.0 ms

Rx = 0 (Short) Rx = 1.5 kΩ

i

Input

R3
15 k

15

µ

F

15

+12 V

Q2

2N3904

4.7 k 150 k

1.0 k

2.2 k220

33 k

R1

100 k

+12 V+12 V

10 µF

10

µ

Output

F

V

r

2

5
4

6

µ

F

MC1490P

7

R2

R

C

x

1

x

8

3

Q1

2N3906

D1

6.8 k

MOTOROLA ANALOG IC DEVICE DATA

7

NOTE 2

–T–

SEATING
PLANE

H

58

–B–

14

F

–A–

C

N

D

K

G

0.13 (0.005) B

M

T

MC1490

OUTLINE DIMENSIONS

P SUFFIX

PLASTIC PACKAGE

CASE 626–05

ISSUE K

L

J

M

M

A

M

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.

DIM MIN MAX MIN MAX

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
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
J 0.20 0.30 0.008 0.012
K 2.92 3.43 0.115 0.135
L 7.62 BSC 0.300 BSC
M ––– 10 ––– 10
N 0.76 1.01 0.030 0.040

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
others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other
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.

How to reach us:
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8

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MOTOROLA ANALOG IC DEVICE DATA

MC1490/D

*MC1490/D*