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PO
May 1999
T CT DUC PRO PRODU TE OLE UTE OBS UBSTIT E S LE CA3089 SSIB
CA3189
FM IF System
[ /Title (CA31 89) /Subject (FM IF System) /Autho r () /Keywords (Harris Semiconductor, FM IF amplifier, quadrat ure detector, tuning meter output, limiter, AFC circuit, AGC circuit, muting circuit, industrial tempera-
Features
* Includes IF Amplifier, Quadrature Detector, AF Preamplifier, and Specific Circuits for AGC, AFC, Tuning Meter, Deviation-Noise Muting, and ON Channel Detector * FM IF Amplifier Applications in High-Fidelity, Automotive, and Communications Receivers * Exceptional Limiting Sensitivity -12V (Typ) at -3dB Point * Low Distortion -0.1% (Typ) (with Double-Tuned Coil) * Single-Coil Tuning Capability * Improved S + N/N Ratio * Externally Programmable Recovered Audio Level * Provides Specific Signal for Control of Interchannel Muting (Squelch) * Provides Specific Signal for Direct Drive of a Tuning Meter * On Channel Step for Search Control * Provides Programmable AGC Voltage for RF Amplifier * Provides a Specific Circuit for Flexible Audio Output * Internal Supply Voltage Regulators * Externally Programmable "On" Channel Step Width, and Deviation at Which Muting Occurs
Description
The Harris CA3189E is a monolithic integrated circuit that provides all the functions of a comprehensive FM-lF system. The block diagram of the CA3189E includes a three-stage FM-lF 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 desirable deluxe features such as programmable delayed AGC for the RF tuner, an AFC drive circuit, and an output signal to drive a tuning meter and/or provide stereo switching logic. In addition, internal power-supply regulators maintain a nearly constant current drain over the voltage supply range of +8.5V to +16V. The CA3189E is ideal for high-fidelity operation. Distortion in a CA3189E FM-lF System is primarily a function of the phase linearity characteristic of the outboard detector coil. The CA3189E has all the features of the CA3089E plus additions. See CA3189E features compared to the CA3089E in Table 1.
Part Number Information
PART NUMBER CA3189E TEMP. RANGE (oC) -40 to 85 PACKAGE 16 Ld PDIP PKG. NO. E16.3
Pinout
CA3189 (PDIP) TOP VIEW
IF IN 1 INPUT BYPASS 2 3
16 15
DELAYED AGC
14 SUBSTRATE (GND) 13 TUNING METER OUT 12 MUTE LOGIC 11 V+ 10 REF BIAS 9 QUADRATURE INPUT
FRAME 4 MUTE CONTROL 5 AUDIO OUT 6 AFC OUT 7 IF OUT 8
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures. 1-800-4-HARRIS or 407-727-9207 | Copyright
(c) Harris Corporation 1999
File Number
1046.4
1
CA3189
Absolute Maximum Ratings
DC Supply Voltage (Between Terminals 11 and 4) . . . . . . . . . . . . . . . . . . . . . . . . 16V (Between Terminals 11 and 14) . . . . . . . . . . . . . . . . . . . . . . . 16V DC Current (Out of Terminal 15) . . . . . . . . . . . . . . . . . . . . . . . . 2mA
Thermal Information
Thermal Resistance (Typical, Note 1) JA (oC/W) PDIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90 Maximum Junction Temperature (Plastic Package) . . . . . . . . 150oC Maximum Storage Temperature Range . . . . . . . . . -65oC to 150oC Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 300oC
Operating Conditions
Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . -40oC to 85oC
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. JA is measured with the component mounted on an evaluation PC board in free air.
Electrical Specifications
TA = 25oC, V+ = 12V CIRCUIT OR FIG. NO.
PARAMETER DC SPECIFICATIONS Quiescent Circuit Current DC Voltages Terminal 1 (IF Input) Terminal 2 (AC Return to Input) Terminal 3 (DC Bias to Input) Terminal 15 (RF AGC) Terminal 10 (DC Reference) DYNAMIC SPECIFICATIONS Input Limiting Voltage (-3dB Point) AM Rejection (Terminal 6) Recovered AF Voltage (Terminal 6) Total Harmonic Distortion (Note 2) Single Tuned (Terminal 6) Double Tuned (Terminal 6) Signal Plus Noise to Noise Ratio (Terminal 6) Deviation Mute Frequency RF AGC Threshold On Channel Step
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS
I11
No Signal Input, Non Muted No Signal Input, Non Muted
1, 2
20
31
40
mA
V1 V2 V3 V15 V10
1, 2 1, 2 1, 2 1, 2 1, 2
1.2 1.2 1.2 7.5 5
1.9 1.9 1.9 9.5 5.6
2.4 2.4 2.4 11 6
V V V V V
VI(lim) AMR VO(AF) VIN = 0.1V, AM Mod. = 30%
fO = 10.7MHz, fMOD. = 400Hz, Deviation 75kHz
1, 2 1, 2 1, 2
45 325
12 55 500
25 650
V dB mV
THD THD S + N/N
VIN = 0.1V
1 2
65
0.5 0.1 72 40 1.25 0 5.6
1 -
% % dB
VIN = 0.1V fMOD = 0
1, 2
fDEV V16 V12 VIN = 0.1V
1, 5, 6 1, 2
-
-
kHz V V V
fDEV < 40kHz fDEV > 40kHz
1 1
NOTE: 2. THD characteristics are essentially a function of the phase characteristics of the network connected between Terminals 8, 9, and 10.
2
CA3189
TABLE 1. FEATURES Low Limiting Sensitivity (12V Typ) Low Distortion Single-Coil Tuning Capability Programmable Audio Level S/N Mute Deviation Mute Flexible AFC Programmable AGC Threshold and Voltage Typical S + N/N > 70 dB Meter Drive Voltage Depressed at Very Low Signal Levels On-Channel Step Control Voltage CA3189E FEATURES COMPARED TO CA3089E CA3189E Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes CA3089E Yes Yes Yes No Yes No Yes No No No No
Test Circuits
3K 100 pF L
(NOTE 4)
C1 V+ = 12V 8.2K 10F 0.05F SIGNAL 0.01F INPUT VOLTAGE 51 3 AUDIO OUT 0.01 F 2 16 22K 10K 33K 150A FULL SCALE 0.33F TO PIN 13 47K 14 4 10 K 15 0.01 F 33K 150A FULL SCALE 13 0.01 F 22K 10K CA3189E 5 11 T (NOTE 7) 22H C2 100 pF 9 1 8.2K 10 AFC 5K 7 OUT 6 C 12 (NOTE 9) 1F 470 0.33F AUDIO OUT 8.2K 10F
V+ = 12V 0.05F SIGNAL 0.01F INPUT VOLTAGE 51 3 0.01 F 2 16 TO PIN 13 47K 11
22H
C 100 pF
8 9
8
1
3.9K 10 AFC 7 OUT CA3189E 6 5K
10F
10F
0.02 F
C 12 (NOTE 5) 5 1F 0.01 F 470
13 15 14 4 10 K 0.01 F
0.02 F
TUNING METER
TUNING METER
NOTES: 6. All resistance values are in ohms. 7. T: PRI. - Q0 (unloaded) 75 (tunes with 100pF (C1) 20 of 34e on 7/ " dia. form. SEC. - Q (unloaded) 75 (tunes with 100pF (C ) 32 0 2 20 of 34e on 7/32" dia. form. kQ (percent of critical coupling) 70% (Adjusted for coil voltage (VC) = 150mV). 8. Above values permit proper operation of mute (squelch) circuit "E" type slugs, spacing 4mm. 9. C = 0.01F for 50s deemphasis (Europe) C = 0.015F for 75s deemphasis (USA). FIGURE 2. TEST CIRCUIT FOR CA3189E USING A DOUBLETUNED DETECTOR COIL
NOTES: 3. All resistance values are in ohms. 4. L tunes with 100pF (C) at 10.7MHz. Q0 (unloaded) 75 (TOKO No. KACS K586HM or equivalent). 5. C = 0.01F for 50s deemphasis (Europe). C = 0.015F for 75s deemphasis (USA). FIGURE 1. TEST CIRCUIT FOR CA3189E USING A SINGLETUNED DETECTOR COIL
3
CA3189 Block Diagram
L (NOTE 11) QUADRATURE INPUT V+ TO INTERNAL REGULATORS CA3189E IF INPUT 1 IF AMPLIFIER 1ST IF AMPL. 2ND IF AMPL. 3RD IF AMPL. QUADRATURE DETECTOR FM DETECTOR LEVEL DETECTOR LEVEL DETECTOR LEVEL DETECTOR LEVEL DETECTOR AUDIO AMPL. DEVIATION MUTE LOGIC AUDIO MUTE (SQUELCH) CONTROL AMPL. 6 AFC AMPL. 7 22H C= 100pF 9 10 8.2K AFC OUTPUT AUDIO OUTPUT 5K
11
OUT
REFERENCE BIAS
8
3 0.02 F DELAYED AGC FOR RF AMPL 15 10K FRAME SUBSTRATE 150A METER DELAYED RF AGC TUNING METER CIRCUIT 0.02F 2
22K 5 MUTING SENSITIVITY 470 12 10K 0.33F
MUTE (SQUELCH) DRIVE CIRCUIT
16
4
14
13 33K TUNING METER OUTPUT
TO STEREO THRESHOLD LOGIC CIRCUITS ON CHANNEL INDICATOR
47K
NOTES: 10. All resistance values are in . 11. L Tunes with 100pF (C) at 10.7MHz. QO 75 (TOKO No. KACS K586HM or equivalent).
4
CA3189 Schematic Diagrams
IF AMPLIFIER A Q9 C R6 2K C11 1 B R7 2K C12 1 R10 2K C13 1 R11 2K C14 1 Q15 Q21 R18 2K R19 2K R23 2K R24 500 R25 1.52K V+ Q3 Q4 V+ V+ Q19 Q8 IF INPUT 1 Q1 Q2 R13A 2.1K R13 2.1K Q8A Q10 Q12 2 Q6 R2 2.8K R3 533 R14 533 R12 2.1K Q7A Q11 R12A 2.1K R16A 2.2K Q7 Q14 Q14A Q13A R15A 2.2K Q16 Q17 Q18 R16 2.8K R17 533 Q13 Q20 R 28 750 C Q22 R27 750 B
A
R20 2K R21 500 R22 1.52 K
R15 2.8K
INPUT BYPASSING
3 R1 2.8K V+ R82 15.6K Q107 D8 Q108 R80 4.12K Q106Q105 R84 1K R81 1.28K R83 500 Q59 R52 400 R51 5K C5 2 V+ Q74 R59 212 C6 3Q 61 C7 3 Q63 Q60 Q62 R53 600 Q70 R56 600 Q64 C8 3 Q69 Q76 R61 4K Q68 Q75 R60 424 Q77 Q84 E R61A 1.1K D1 R62 5K F 15 16 LEVEL DETECTOR AND METER CIRCUIT 13 TUNING METER AGC FOR RF AMPL. D
880
5
CA3189 Schematic Diagrams
QUADRATURE 9 INPUT
DETECTOR
(Continued) CA3189E
REF BIAS 10 R32 500 Q35 Q44 R31 390 Q45 IF 8 OUT D6 R37 600 R38 400 Q46 Q50 Q50A Q53 Q54 Q51 R44 400 R42 600 AUDIO AMPL.
A
R33 500 B Q23 Q24Q25
Q32Q33
R26 10K Q26 Q34
R34 10K R63 425 Q48 Q48A V+ R35 2.2K Q40 Q27 R29 200 R36 200 Q41 R67 10.1K Q82 R40 1K R66 550 Q79 R65 3.9K Q81 R64 425 V+ Q80
Q38 D2 C D3
Q39
Q49AQ49 6 Q83 R41 1K
5 R9 9.6K Q5 Z1 C B R5 3.8K D D1 R89 10 E R4 700 A Q28 Q30 D4 Q31 R55 17K Q65 Q66 Q67 BIAS SUPPLY R70 6.96 K Q43 V+ R45 500 Q90 Q94 Q95 R74 R73 1K 1K Q96 Q100 Q101 R76 1K R77 1K Q97 Q104 Q93 R72 R73 1K 1K R78 1.08K Q99 R79 1.08K R47 667 Q102 R90 5K Q103 R39 400 Q47 Q52 7 Q56 V+ Q98 R43 400
R8 Q29 1.9 KR 30 533 D5 Z2
Q55
Q57 R48 667
C9 10 Q71 F C10 34 R54 3K Q72
R57 11.8K C15 10 Q78
Q92 V+ Q91 R71 1K
Q73 R58 50
Z3 12 DEVIATION MUTE DETECTOR AND AFC AMPLIFIER
MUTE DRIVE
6
CA3189
o
Typical Application
1.8K 10nF 1.8K 10nF 3.3K 390 3.3K 390 10nF 47 L (NOTE 14) 100 pF 68K AFT 3.9K 22H 11 (NOTE 13) CF Q1 10.7MHz 390 FROM TUNER 1nF 10nF 2.2K 470 10nF 2.2K 470 10nF 2 10nF 4 12 13 15 10nF 10nF 16 470 47K 5 3 CA3189E 6 AUDIO Q2 (NOTE 13) CF 1 8 9 10 7 12K 8.2K 10F 10F 10nF +12V
10K
33K 100nF RF AGC
10K
47K 47F 10K 2.2F 3.9nF
0V TUNING
NOTES: 12. All resistance values are in ohms. 13. CF: Ceramic filters, TOKO CSFE or equivalent. 14. L tunes with 100pF (C) at 10.7MHz. Q0 (unloaded) 75 (TOKO No. KACS K586HM or equivalent). FIGURE 3. COMPLETE FM IF SYSTEM FOR HIGH QUALITY RECEIVERS
7
CA3189
o
Typical Performance Curves
RECOVERED AUDIO (dB) MUTING CONTROL AT MAX. RESISTANCE V+ = 12V, TA = 25oC 0 SEE FIGURE 1 RECOVERED AUDIO FROM FULL OUTPUT (LEFT COORDINATE) -10 -20 -30 -40 -50 -60 1 TUNER AGC DC VOLTAGE AT TERM. 15 (RIGHT COORDINATE) (PIN 15 TO PIN 13) VOLTAGE AT TERM. 13 METER CIRCUIT (33k TO GND) (RIGHT COORDINATE) 10 100 1K 10K V+ = 12V, TA = 25oC CURRENT INTO TERMINAL 7 (A) 12 10 8 6 4 2 DC VOLTS 200 150 100 50 0 -50 -100 -150 -100
10 7
5k
A
SEE FIGURE 1
100K
-50
INPUT SIGNAL (V)
0 50 100 CHANGE IN FREQUENCY (kHz)
150
FIGURE 4. MUTING ACTION, TUNER AGC, AND TUNING METER OUTPUT vs INPUT SIGNAL VOLTAGE
FIGURE 5. AFC CHARACTERISTICS (CURRENT AT TERMINAL 7 vs CHANGE IN FREQUENCY)
0 -10 RELATIVE OUTPUT (dB) -20 CA3189E ONLY -30 -40 -50 -60 -70 -80 102 103 104 105 NOISE CA3189E PRECEDED BY FILTER AND GAIN STAGE CA3189E PRECEDED BY 2 FILTER AND GAIN STAGES SIGNAL (DEVIATION = 75kHz)
DEVIATION MUTE THRESHOLD (kHz)
V+ = 12V, TA = 25oC 140 120 100 80 60 40 20
0
5
10
15
20
25
1
10
LOAD RESISTANCE (BETWEEN TERM. 7 AND TERM. 10) (k)
SIGNAL LEVEL (V)
FIGURE 6. DEVIATION MUTE THRESHOLD vs LOAD RESISTANCE (BETWEEN TERMINAL 7 AND TERMINAL 10)
FIGURE 7. TYPICAL LIMITING AND NOISE CHARACTERISTICS
All Harris semiconductor products are manufactured, assembled and tested under ISO9000 quality systems certification.
Harris semiconductor products are sold by description only. Harris Semiconductor Communications Division 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.
For information regarding Harris' Semiconductor Communications Division and its products, call 1-800-4-HARRIS or see web site http://www.semi.harris.com
Sales Office Headquarters
NORTH AMERICA Harris Semiconductor Communications Division P. O. Box 883, Mail Stop 53-210 Melbourne, FL 32902 TEL: 1-800-442-7747 (407) 727-9207 FAX: (407) 724-3973 EUROPE Harris Semiconductor Communications Division Mercure Center 100, Rue de la Fusee 1130 Brussels, Belgium TEL: (32) 2.724.2111 FAX: (32) 2.724.22.05 ASIA Harris Semiconductor Communications Division 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

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