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元器件交易网
CA3089
November 1996
FM IF System
Description
Intersil CA3089 is a monolithic integrated circuit that pro-
vides all the functions of a comprehensive FM-IF system.
The block diagram shows the CA3089 features, which
include a three-stage FM-IF amplifier/limiter configuration
with level detectors for each stage, a doubly-balanced
quadrature FM detector and an audio amplifier that features
the optional use of a muting (squelch) circuit.
The advanced circuit design of the IF system includes desir-
able deluxe features such as delayed AGC for the RF tuner,
and AFC drive circuit, and an output signal to drive a tuning
meter and/or provide stereo switching logic. In addition, inter-
nal power supply regulators maintain a nearly constant cur-
rent drain over the voltage supply range of +8.5V to +16V.
The CA3089 is ideal for high-fidelity operation. Distortion in a
CA3089 FM-IF System is primarily a function of the phase
linearity characteristic of the outboard detector coil.
Features
•For FM IF Amplifier Applications in High-Fidelity,
Automotive, and Communications Receivers
•Includes: IF Amplifier, Quadrature Detector, AF
Preamplifier, and Specific Circuits for AGC, AFC, Muting
(Squelch), andTuning Meter
•Exceptional Limiting Sensitivity
at -3dB Point. . . . . . . . . . . . . . . . . . . . . . . . . .12µV (Typ)
•Low Distortion:
(with Double-Tuned Coil). . . . . . . . . . . . . . . .0.1% (Typ)
•Single-Coil Tuning Capability
•High Recovered Audio. . . . . . . . . . . . . . . .400mV (Typ)
•Provides Specific Signal for Control of Interchannel
Muting (Squelch)
•Provides Specific Signal for Direct Drive of a Tuning
Meter
•Provides Delayed AGC Voltage for RF Amplifier
•Provides a Specific Circuit for Flexible AFC
•Internal Supply-Voltage Regulators
Ordering Information
PART NUMBER
(BRAND)
CA3089E
CA3089M1
(3089M)
TEMP.
RANGE (
o
C)
-40 to 85
-40 to 85
PACKAGE
16 Ld PDIP
20 Ld SOIC
PKG.
NO.
E16.3
M20.3
Pinout
CA3089
(PDIP)
TOP VIEW
GND
IF IN1
INPUT BYPASS
2
DC FB BYPASS
3
FRAME GND
4
MUTE CONTROL
5
AUDIO OUT
6
AFC OUT
7
IF OUT
8
16
NC
15DELAYED AGC
14SUBSTRATE (GND)
13TUNING METER OUT
12MUTE LOGIC
11V+
10REF BIAS
9QUADRATURE INPUT
IF IN
INPUT BYPASS
DC FB BYPASS
FRAME GND
MUTE CONTROL
AUDIO OUT
AFC OUT
IF OUT
1
2
3
4
5
6
7
8
9
CA3089
(SOIC)
TOP VIEW
20
GND
19
DELAYED AGC
18
GND
17
SUBSTRATE (GND)
16
TUNING METER OUT
15
MUTE LOGIC
14
V+
13
REF BIAS
12
QUADRATURE INPUT
11
NC
GND
10
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Copyright © Intersil Corporation 1999
File Number
561.3
8-27
元器件交易网
CA3089
Absolute Maximum Ratings
Supply Voltage
Between V+ and Frame GND. . . . . . . . . . . . . . . . . . . . . . . . .16V
Between V+ and Substrate GND . . . . . . . . . . . . . . . . . . . . . .16V
DC Current (Out of Delayed AGC). . . . . . . . . . . . . . . . . . . . . . .2mA
Thermal Information
Thermal Resistance (Typical, Note 1)
θ
JA
(
o
C/W)
PDIP Package. . . . . . . . . . . . . . . . . . . . . . . . . . . . .90
SOIC Package. . . . . . . . . . . . . . . . . . . . . . . . . . . . .80
Maximum Junction Temperature (Plastic Package). . . . . . . .150
o
C
Maximum Storage Temperature Range . . . . . . . . . -65
o
C to 150
o
C
Maximum Lead Temperature (Soldering 10s). . . . . . . . . . . . 300
o
C
(SOIC - Lead Tips Only)
Operating Conditions
Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . -40
o
C to 85
o
C
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.θ
JA
is measured with the component mounted on an evaluation PC board in free air.
Electrical Specifications
(NOTE 3)
PARAMETER
DC CHARACTERISTICS
Quiescent Circuit Current
DC Voltages
V+ = 12V (See Figures 3 and 4)
TEST CONDITIONS
No signal input, Non muted
TEMP.
(
o
C)
25
25
25
25
25
25
f
O
= 10.7MHz,
f
MOD
= 400Hz,
V
IN
= 0.1V,
Deviation =±75kHz
AM Mod. = 30%
V
IN
= 0.1V
-25
25
25
25
25
25
MIN
16
1.2
1.2
1.2
5.0
5.0
-
45
300
-
-
60
TYP
23
1.9
1.9
1.9
5.6
5.6
12
55
400
0.5
0.1
67
MAX
30
2.4
2.4
2.4
6.0
6.0
25
-
500
1.0
-
-
UNITS
mA
V
V
V
V
V
µV
dB
mV
%
%
dB
Terminal 1 (IF Input)
Terminal 2 (AC Return to Input)
Terminal 3 (DC Bias to Input)
Terminal 6 (Audio Output)
Terminal 10 (DC Reference)
DYNAMIC CHARACTERISTICS
Input Limiting Voltage (-3dB point), V
1
(lim)
AM Rejection (Terminal 6), AMR
Recovered AF Voltage (Terminal 6) V
O
(AF)
Total Harmonic
Distortion, THD
(Note 2)
NOTES:
characteristics are essentially a function of the phase characteristics of the network connected between Terminals 8, 9, and 10.
al numbers refer to 16 Lead PDIP.
Single Tuned (Terminal 6)
Double Tuned (Terminal 6)
Signal Plus Noise to Noise Ratio (Terminal 6)
Application Information
V+ = 12V, T
A
25
o
C
5kΩ
125
C
U
R
R
E
N
T
I
N
T
O
T
E
R
M
I
N
A
L
7
(
µ
A
)
100
75
50
25
0
-25
-50
-75
-100
-125
-100-50050100
10
R
E
C
O
V
E
R
E
D
A
U
D
I
O
(
d
B
)
M
U
T
I
N
G
C
O
N
T
R
O
L
A
T
M
A
X
I
M
U
M
R
E
S
I
S
T
A
N
C
E
7
V+ = 12V, T
A
= 25
o
C
0
-10
-20
-30
-40
-50
-60
1
6
RECOVERED AUDIO FROM FULL OUTPUT
(LEFT COORDINATE)
5
TUNER AGC DC VOLTAGE AT
TERM. 15 (RIGHT COORDINATE)
VOLTAGE AT TERMINAL 13
METER CIRCUIT (33kΩ TO GND)
(RIGHT COORDINATE)
4
3
2
1
µA
10
CHANGE IN FREQUENCY (kHz)
1001K
INPUT SIGNAL (µV)
10K100K
FIGURE CHARACTERISTICS (CURRENT AT TERMINAL
7) vs CHANGE IN FREQUENCY. (SEE TEST CIRCUIT
FIGURE 3.)
FIGURE ACTION, TUNER AGC, AND TUNING
METER OUTPUT vs INPUTSIGNAL VOLTAGE. (SEE
TEST CIRCUIT FIGURE 3.)
8-28
D
C
(
V
)
元器件交易网
CA3089
Test Circuits
3K
L
(NOTE 5)
V+ = 12V
0.05µF
SIGNAL
INPUT
VOLTAGE
0.01µF
1
51
3
0.01
µF
2
15
14
4
10
K
0.001
µF
13
CA3089E
12
5
0.001
µF
33K
150µA
FULL
SCALE
0.5M
4
470
0.02
µF
22µH
C
100
pF
9
3.9K
10
7
AFC OUTPUT
2.7K
6
AUDIO
OUT
0.01
µF
SIGNAL
INPUT
VOLTAGE
0.05µF
0.01µF
1
51
3
0.01
µF
2
15
14
10
K
0.001
µF
13
CA3089E
5
0.001
µF
33K
150µA
FULL
SCALE
0.5M
12
470
5K
V+ = 12V
11
22µH
100
pF
C
1
T (NOTE 8)
C
2
100
pF
9
8.2K
10
7
AFC OUTPUT
2.7K
6
AUDIO
OUT
0.01
µF
5K
11
8
8
0.02
µF
120K
0.33µF
120K
0.33µF
TUNING METER
TUNING METER
NOTES:
resistance values are in ohms.
5.L tunes with 100pF (C) at 10.7MHz.
6.Q
0
(unloaded)
≅
75 (G.I. Automatic Mfg. Div. EX22741 or equivalent).
NOTES:
resistance values are in ohms.
8.T PRI. - Q
0
(unloaded)
≅
75 (tunes with 100pF (C
1
) 20↑ of 34e on
7
/” dia. form).
32
. -Q
0
(unloaded)
≅
75 (tunes with 100pF (C
2
) 20↑ of 34e on
7
/” dia. form).
32
(percent of critical coupling)
≅
70%.
(Adjusted for coil voltage V
C
) = 150mV.
Above values permit proper operation of mute (squelch) circuit “E”
type slugs, spacing 4mm.
FIGURE CIRCUIT FOR CA3089E USING A DOUBLE-
TUNED DETECTOR COIL
FIGURE CIRCUIT FOR CA3089E USING A SINGLE-
TUNED DETECTOR COIL
Typical Applications
100
0.01µF
220pF250pF
300Ω
INPUT
1
FM
TUNER
(NOTE 12)
IF OUT
CERAMIC
FILTER
(NOTE 13)
330
3
2
0.05µF
11
8
9
10
CA3089E
CA3089E
6
0.01µF
2.7K
AUDIO
OUT
V+ = 12V
22
µH
100pF
C
3.9K
L (NOTE 14)
NOTES:
resistance values are in ohms.
4SN3FIC or equivalent.
SFG 10.7mA or equivalent.
14.L tunes with 100pF (C) at 10.7MHz Q
0
unloaded
≅
75
(G.I. EX22741 or equivalent).
14
4
Performance Data at f
O
= 98MHz, f
MOD
= 400Hz, Deviation =±75kHz:
-3dB Limiting Sensitivity. . . . . . . . . . . . . . . . . .2µV (Antenna Level)
20dB Quieting Sensitivity. . . . . . . . . . . . . . . . .1µV (Antenna Level)
30dB Quieting Sensitivity. . . . . . . . . . . . . . . .1.5µV (Antenna Level)
FIGURE L FM TUNER USING THE CA3089E WITH A SINGLE TUNED DETECTOR COIL
8-29
元器件交易网
CA3089
Typical Applications
(Continued)
FIGURE VIEW OF PRINTED CIRCUIT BOARDFIGURE ENT SIDE - TOP VIEW
FIGURE SIZE PHOTOGRAPHS OF THE CA3089E AND OUTBOARD COMPONENTS MOUNTED ON A PRINTED-CIRCUIT BOARD
Block Diagram
L
(NOTE 16)
QUADRATURE
INPUT
V+
22µH
C =
100pF
910
REFERENCE
BIAS
AFC
AMPL.
2
ND
IF
AMPL.
3
RD
IF
AMPL.
QUADRATURE
DETECTOR
AUDIO
AMPL.
AUDIO
MUTE
(SQUELCH)
CONTROL
AMPL.
AFC
OUTPUT
AUDIO
OUTPUT
MUTING
SENSITIVITY
TO INTERNAL
REGULATORS
IF
INPUT
1
3
0.02
µF
0.02µF
2
LEVEL
DETECTOR
LEVEL
DETECTOR
IF AMPLIFIER
1
ST
IF
AMPL.
11
IF
OUT
8
7
6
LEVEL
DETECTOR
LEVEL
DETECTOR
5
DELAYED
AGC FOR
RF AMPL
15
10K
FRAMESUBSTRATE
150µA
METER
TUNING
METER
CIRCUIT
MUTE (SQUELCH)
DRIVE CIRCUIT
470
12
0.33µF
TO STEREO
THRESHOLD
LOGIC CIRCUITS
120K
500K
41413
33K
TUNING METER OUTPUT
NOTES:
resistance values are in ohms.
16.L Tunes with 100pF (C) at 10.7MHz.
17.Q
O
≅
75 (G.I. EX22741 or equivalent).
numbers refer to 16 lead DIP.
8-30
元器件交易网
CA3089
Schematic Diagram
IF AMPLIFIER
A
Q
9
R
18
2K
Q
15
R
19
2K
Q
21
R
23
2K
R
24
480
R
25
1.5K
V+
Q
3
Q
4
V+
C
1
1
C
2
1
IF
INPUT
1
Q
1
Q
2
Q
8
Q
8A
Q
Q
10
11
R
13A
2K
Q
12
Q
6
INPUT
BYPASSING
R
2
30K
R
3
360
C
4
0.2
R
13
2.7K
R
14
360
R
12
2.7K
Q
7A
R
12A
2K
R
16A
2K
C
3
0.2
Q
7
Q
14
Q
14A
Q
13A
Q
16
Q
17
R
15A
2K
Q
13
V+
Q
19
Q
20
R
20
2K
R
21
480
R
22
1.5K
R
15
2.7K
SEE
NEXT
PAGE
R
28
750
Q
22
R
27
750
R
6
2K
C
11
1
B
R
7
2K
C
12
1
C
13
1
R
10
2K
R
11
2K
C
14
1
C
2
Q
18
R
16
2.7K
R
17
360
3
R
1
30K
V+
Q
74
R
51
5K
C5
2
Q
60
Q
59
R
52
400
Q
62
R
53
600
C
6
3
Q
61
Q
63
Q
70
R
56
600
C
7
3
Q
64
Q
69
Q
76
R
61
4K
C
8
3
Q
68
Q
75
R
59
150
R
60
300
Q
77
Q
84
V+
R
50
500
Q
58
15
AGC FOR
RF AMPL.
TUNING
13
METER
NOTE:Pin numbers refer to 16 lead PDIP.
LEVEL DETECTOR AND METER CIRCUIT
8-31
元器件交易网
CA3089
Schematic Diagram
9
QUADRATURE
INPUT
(Continued)
REF
10
BIAS
8
IF
OUT
11
V+
DETECTOR
R
33
500
R
32
500
Q
35
Q
24
Q
25
Q
32
Q
33
R
31
390
Q
44
Q
45
R
37
166
R
38
500
Q
46
AUDIO
AMPLIFIER
R
44
500
Q
53
A
Q
54
R
42
166
Q
51
Q
23
R
26
10K
Q
26
Q
34
R
34
10K
R
63
300
Q
38
Q
39
R
35
2.2K
Q
79
Q
80
R
64
300
Q
81
R
40
500
Q
48
Q
50
R
41
500
Q
49
D
2
D
3
Q
40
Q
27
R
29
200
Q
82
Q
41
AUDIO
OUT
6
R
49
5K
Q
83
R
36
200
V+
R
65
5
R
9
10K
Q
5
Z
1
C
B
A
R
8
2K
R
5
4K
D
1
R
4
480
R
30
480
Q
28
Q
30
Q
29
D
4
D
5
Z
2
V+
Q
31
R
45
500
R
39
500
Q
47
Q
52
R
43
500
50K
MUTE
CONTROL
Q
43
Q
42
R
54
5K
R
55
13K
Q
65
Q
66
Q
67
AFC
OUTPUT
Q
56
7
R
46
4.2K
Q
55
Q
57
R
47
500
R
48
500
BIAS
SUPPLY
AFC AMPLIFIER
Q
71
C
9
10
Q
72
R
57
10K
R
62
500
Q
78
V+
4
FRAME
14
SUBSTRATE
Q
73
C
10
10
R
58
50
MUTE
12
LOGIC
NOTES:
resistance values are in ohms.
capacitance values are in pF.
numbers refer to 16 lead PDIP.
MUTE DRIVE
8-32
元器件交易网
CA3089
All Intersil semiconductor products are manufactured, assembled and tested underISO9000 quality systems certification.
Intersil products are sold by description only. Intersil Corporation 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 Intersil is believed to be accurate
and reliable. However, no responsibility is assumed by Intersil 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 Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see web site
Sales Office Headquarters
NORTH AMERICA
Intersil Corporation
P. O. Box 883, Mail Stop 53-204
Melbourne, FL32902
TEL:(321) 724-7000
FAX: (321) 724-7240
EUROPE
Intersil SA
Mercure Center
100, Rue de la Fusee
1130 Brussels, Belgium
TEL: (32) 2.724.2111
FAX: (32) 2.724.22.05
ASIA
Intersil (Taiwan) Ltd.
Taiwan Limited
7F-6, No. 101 Fu Hsing North Road
Taipei, Taiwan
Republic of China
TEL: (886) 2 2716 9310
FAX: (886) 2 2715 3029
8-33
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