|Category||Communication => Freq/Signal Converters/Generators|
|Description||FM if System|
|Datasheet||Download CA3089 datasheet
|Cross ref.||Similar parts: AN377, HA1122, LA1230, SN76689, UA308, ULN2289, HA1137W, MC1389, TDA1200|
UCT NT PROD T E CEME L OBSO DED REPLA MEN CO M Data Sheet October NO R
Intersil is a monolithic integrated circuit that provides 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 desirable 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, internal power supply regulators maintain a nearly constant current drain over the voltage supply range to +16V. The CA3089 is ideal for high-fidelity operation. Distortion 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), and Tuning 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
PART NUMBER CA3089M1 (3089M) TEMP. RANGE (oC) to 85 PACKAGE 16 Ld PDIP 20 Ld SOIC PKG. NO. E16.3 M20.3Provides a Specific Circuit for Flexible AFC Internal Supply-Voltage Regulators
GND IN 1 INPUT BYPASS DC FB BYPASS 3 FRAME GND 4 MUTE CONTROL 5 AUDIO OUT 6 AFC OUT 7 IF OUT NC 15 DELAYED AGC 14 SUBSTRATE (GND) 13 TUNING METER OUT 12 MUTE LOGIC V+ 10 REF BIAS 9 QUADRATURE INPUT IF IN INPUT BYPASS DC FB BYPASS FRAME GND MUTE CONTROL AUDIO OUT AFC OUT IF OUT
20 GND 19 DELAYED AGC 18 GND 17 SUBSTRATE (GND) 16 TUNING METER OUT 15 MUTE LOGIC V+ 13 REF BIAS 12 QUADRATURE INPUT 11 NC
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright © Intersil Americas Inc. 2002. All Rights Reserved All other trademarks mentioned are the property of their respective owners.
Supply Voltage Between V+ and Frame GND.16V Between V+ and Substrate GND.16V DC Current (Out of Delayed AGC). 2mA
PDIP Package. 90 SOIC Package. 95 Maximum Junction Temperature (Plastic Package). 150oC Maximum Storage Temperature Range. to 150oC Maximum Lead Temperature (Soldering 10s). 300oC (SOIC - Lead Tips Only)
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: JA is measured with the component mounted on an evaluation PC board in free air.
(NOTE 3) PARAMETER DC CHARACTERISTICS Quiescent Circuit Current DC Voltages 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), V1 (lim) AM Rejection (Terminal 6), AMR Recovered AF Voltage (Terminal 6) VO (AF) Total Harmonic Distortion, THD (Note 2) NOTES: Single Tuned (Terminal 6) Double Tuned (Terminal 6)Signal Plus Noise to Noise Ratio (Terminal 6)
2. THD characteristics are essentially a function of the phase characteristics of the network connected between Terminals 8, 9, and 10. 3. Terminal numbers refer to 16 Lead PDIP.RECOVERED AUDIO (dB) MUTING CONTROL AT MAXIMUM RESISTANCE
25oC 1K INPUT SIGNAL (µV) 100K 6 RECOVERED AUDIO FROM FULL OUTPUT (LEFT COORDINATE) 5 TUNER AGC DC VOLTAGE AT TERM. 15 (RIGHT COORDINATE) VOLTAGE AT TERMINAL 13 METER CIRCUIT (33k TO GND) (RIGHT COORDINATE)
FIGURE 1. AFC CHARACTERISTICS (CURRENT AT TERMINAL 7) vs CHANGE IN FREQUENCY. (SEE TEST CIRCUIT FIGURE 3)
FIGURE 2. MUTING ACTION, TUNER AGC, AND TUNING METER OUTPUT vs INPUT SIGNAL VOLTAGE. (SEE TEST CIRCUIT FIGURE 3)L (NOTE 12V 0.05µF SIGNAL INPUT VOLTAGE 33K 150µA FULL SCALE 0.5M
NOTES: 4. All resistance values are in ohms. 5. L tunes with 100pF (C) 6. Q0 (unloaded) 75 (G.I. Automatic Mfg. Div. EX22741 or equivalent)
NOTES: 7. All resistance values are in ohms. 8. T PRI. - Q0 (unloaded) 75 (tunes with 7/ " dia. form). 32 9. SEC. - Q0 (unloaded) 75 (tunes with 7/ " dia. form). 10. kQ (percent of critical coupling) 70%. (Adjusted for coil voltage VC) = 150mV. Above values permit proper operation of mute (squelch) circuit "E" type slugs, spacing 4mm. FIGURE 4. TEST CIRCUIT FOR CA3089E USING A DOUBLETUNED DETECTOR COILFIGURE 3. TEST CIRCUIT FOR CA3089E USING A SINGLETUNED DETECTOR COIL
NOTES: 11. All resistance values are in ohms. 12. Waller 4SN3FIC or equivalent. 13. Murata SFG 10.7mA or equivalent. 14. L tunes with 100pF (C) 10.7MHz Q0 unloaded 75 (G.I. EX22741 or equivalent).
Performance Data = 98MHz, fMOD = 400Hz, Deviation ±75kHz: -3dB Limiting Sensitivity. 2µV (Antenna Level) 20dB Quieting Sensitivity. 1µV (Antenna Level) 30dB Quieting Sensitivity.1.5µV (Antenna Level)FIGURE 5. TYPICAL FM TUNER USING THE CA3089E WITH A SINGLE TUNED DETECTOR COIL
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