Page 1
SEMICONDUCTOR
CA3012
November 1996
Features
• Exceptionally High Amplifier Gain
- Power Gain at 4.5MHz . . . . . . . . . . . . . . . . . . . . .75dB
• Excellent Input Limiting Characteristics
- Limiting Voltage (Knee) at 10.7MHz . . . . 600µV (Typ)
• Wide Frequency Capability:
- Bandwidth. . . . . . . . . . . . . . . . . . . . 100kHz to 20MHz
Applications
• FM IF Amplifiers
• FM Communication Receivers
• TV IF Amplifiers
Pinout
CA3012
(METAL CAN)
TOP VIEW
FM IF Wideband Amplifier
Description
The CA3012 is an FM IF wideband amplifier with 3 limiter
gain stages in a bipolar monolithic technology. The pin 1
input is an open base and has a separate feedback bias.
The feedback bias pin, DC FB BYPASS, is externally
bypassed and provides the means for a tuned coil input to
the IF IN pin. The output is a high impedance open collector
which may be matched to a tuned transformer , driving an FM
detector. Internal regulation circuits provide DC bias to the
gain stages and DC feedback circuit.
The CA3012 is intended for FM limiting applications requiring
high gain.
Ordering Information
TEMP.
PART NUMBER
CA3012 -55 to 125 10 Ld Metal Can T10.C
RANGE (oC) PACKAGE
Schematic Diagram
PKG.
NO.
10
V
CC
INPUT
DC IN REF
DC FB
BYPASS
REF
BIAS
1
2
3
4
OUTPUT
†Internal connection, do not use.
V
CC
10
5
†NC
9
8
GROUND
7
†NC
6
†NC
1
8
2
34
5
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright
© Harris Corporation 1996
8-18
File Number 128.1
Page 2
CA3012
Absolute Maximum Ratings T
Maximum Supply Voltage VCC, Pin 10. . . . . . . . . . . . . . . . . . . . 10V
Maximum Output Voltage, Pin 5. . . . . . . . . . . . . . . . . . . . . . . . . 13V
Maximum Input Signal Voltage between Pin 1 and Pin 2 . . . . . ±3VV
Operating Conditions
Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . -55oC to 125oC
Supply Voltage Range (Typical) . . . . . . . . . . . . . . . . . . . 5.5V to 10V
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation
of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTE:
1. θJA is measured with the component mounted on an evaluation PC board in free air.
=25oC Thermal Information
A
Thermal Resistance (Typical, Note 1) θJA (oC/W) θJC (oC/W)
Metal Can Package. . . . . . . . . . . . . . . 175 100
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . .175oC
Maximum Storage Temperature Range . . . . . . . . . -65oC to 150oC
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 300oC
Electrical Specifications
TEST CONDITIONS
SETUP AND
PROCEDURE
PARAMETER SYMBOL
Total Device Dissipation (Note 2) P
Voltage Gain (Note 3) A 3 1 6 -55 50 55 - dB
Input Impedance Components
Parallel Input Resistance R
Parallel Input Capacitance C
Output Impedance Components
Parallel Output Resistance R
Parallel Output Capacitance C
Noise Figure NF 10 4.5 7.5 25 - 8.7 - dB
Input Limiting Voltage (Knee) V
NOTES:
2. The total current drain may be determined by dividing P
3. Recommended minimum DC supply voltage (VCC) is 5.5V. Nominal load current flowing into terminal 5 is 1.5mA at 7.5V.
T
IN
IN
OUT
OUT
I(LIM
(FIGURE)
1 - 6 -55 66 80 135 mW
3 1 7.5 -55 55 59 - dB
3 1 10 -55 55 61 - dB
3 4.5 7.5 25 60 67 - dB
6 4.5 7.5 25 - 3 - kΩ
6 4.5 7.5 25 - 7 - pF
8 4.5 7.5 25 - 31.5 - kΩ
8 4.5 7.5 25 - 4.2 - pF
) 3 4.5 7.5 25 - 300 400 µV
by VCC.
T
FREQUENCY
f (MHz)
- 7.5 -55 97 130 190 mW
- 10 -55 150 210 275 mW
10.7 7.5 25 55 61 - dB
DC SUPPLY
VOLTAGE
VCC (V)
TEMP
MIN TYP MAX UNITS
(oC)
25 66 90 121 mW
125 65 70 121 mW
25 97 120 167 mW
125 95 100 167 mW
25 150 190 255 mW
125 150 160 255 mW
25 60 66 - dB
125 50 61 - dB
25 65 70 - dB
125 55 65 - dB
25 65 71 - dB
125 55 66 - dB
8-19
Page 3
CA3012
Typical Performance Curves and Test Setups
250
SIGNAL
SOURCE
= 50Ω
R
G
50Ω
0.1µF
200
+V
CC
10 5
1
2
CA3012
8
+
I
6 7 4
-
150
100
50
TOTAL DEVICE DISSIPATION (mW)
0
-75 -50 -25 0 25 50 75 100 125 150
TEMPERATURE (
VCC = 10
o
C)
FIGURE 1. DISSIPATION TEST SETUP FIGURE 2. DISSIPATION vs TEMPERATURE
+V
CC
0.1µF
0.1µF
1
V
I
50Ω
2
0.1µF
0.1µF
R
OUT
1kΩ
10 5
CA3012
3 8 4
V
O
0.1µF
RF
VOLTMETER
Procedures
A. Voltage Gain
1.Set input frequency at desired value, V
2.Record V
O
= 100µV
I
3.Calculate Voltage Gain A from A = 20 log10 VO/V
4.Repeat steps 1, 2 and 3 for each frequency and/or for
temperature desired
B. Input Limiting Voltage (Knee)
1.Repeat steps A1 and A2, using V
2.Decrease V
value for V
3.Record V
to the level at which VO is 3dB below its
I
= 100mV
I
as Input Limiting Voltage (Knee)
I
= 100mV
I
FIGURE 3. VOLTAGE GAIN TEST SETUP
7.5
6
RMS
I
80
75
70
65
60
VOLTAGE GAIN (dB)
55
50
-75 -50 -25 0 25 50 75 100 125 150
VCC = 7.5, f = 1MHz, RS = 50Ω, RL = 1kΩ
VOLTAGE GAIN
INPUT LIMITING
TEMPERATURE (oC)
600
500
400
300
200
100
0
FIGURE 4. VOLTAGE GAIN AND INPUT LIMITING VOLTAGE
vs TEMPERATURE
72
TA = 25oC, VCC = 7.5, RS = 50Ω, RL = 1kΩ
70
VOLTAGE GAIN
68
66
64
VOLTAGE GAIN (dB)
INPUT LIMITING VOLTAGE
62
INPUT LIMITING VOLTAGE (µV)
60
0.1 1 10
FREQUENCY (MHz)
FIGURE 5. VOLTA GE GAIN AND INPUT LIMITING V OLTA GE vs
FREQUENCY
8-20
700
600
500
400
300
200
100
INPUT LIMITING VOLTAGE (µV)
Page 4
CA3012
Typical Performance Curves and Test Setups
+V
CC
10 5
HI
R-X METER
LO
FIGURE 6. INPUT IMPEDANCE TEST SETUP FIGURE 7. INPUT IMPEDANCE vs FREQUENCY
1
VI≤ 100mV
2
0.1µF
0.1µF
CA3012
3 8 4
0.1µF
(Continued)
10
8
6
PARALLEL INPUT CAPACITANCE (pF)
4
0 5 10 15
6
R
IN
FREQUENCY (MHz)
TA = 25oC, VCC = 7.5
C
IN
TA = 25oC, VCC = 7.5
4
3
PARALLEL INPUT RESISTANCE (kΩ)
2
5
0.1µF
1
CA3012
2
3 4 8
0.1µF
0.1
µF
5
10
+V
CC
HI
LO
R-X METER
0.1µF
C
4
PARALLEL OUTPUT CAPACITANCE (pF)
3
0 5 10 15
OUT
R
OUT
FREQUENCY (MHz)
FIGURE 8. OUTPUT IMPEDANCE TEST SETUP FIGURE 9. OUTPUT IMPEDANCE vs FREQUENCY
+V
CC
4.5MHz
NOISE SOURCE
0.1µF
10
R
= 200Ω
S
L
1
C
L1 = 82µH, CENTER T APPED
L
= 2.36µH
2
C
, C2 = ARCO TYPE 423 P ADDER, OR EQUIVALENT
1
1
1
2
0.1µF
0.1µF
L
CA3012
3 4 8
0.1
µF
2
5
C
2
VOLTMETER
RF
9.5
9.0
8.5
NOISE FIGURE (dB)
8.0
678910
DC SUPPLY VOLTS (VCC)
TA = 25oC, f = 4.5MHz, RS = 200Ω
50
40
PARALLEL OUTPUT RESISTANCE (kΩ)
30
FIGURE 10. FIGURE 11. NOISE FIGURE vs DC SUPPLY VOLTAGE
8-21
Page 5
CA3012
Typical Application
+V
CC
10
FM
10.88MHz -108MHz
TUNER
10.7MHz
SELECTIVITY
1
2
5
CA3012
3 4 8
DETECTOR
FIGURE 12. BLOCK DIAGRAM OF TYPICAL FM RECEIVER USING THE CA3012 INTEGRATED CIRCUIT WIDEBAND AMPLIFIER
AF
AMPLIFIER
SPEAKER
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Harris Semiconductor products are sold by description only. Harr is Semiconductor reserves the right to make changes in circuit design and/or specifications at
any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Harris is
believed to be accurate and reliable. However, no responsibility is assumed by Harris or its subsidiaries for its use; nor for any infringements of patents or other
rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Harris or its subsidiaries.
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8-22
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