CA3065 IC
The CA3065 IF Amplifier-Limiter, FM Detector, Electronic Attenuator, Audio Driver is a high-performance, monolithic integrated circuit specifically engineered for use as the complete sound system in television receivers. This highly integrated device consolidates several critical functions onto a single silicon chip, dramatically reducing the complexity and component count of the external circuitry required for a television’s sound intermediate-frequency (IF) subsystem. The core functional blocks within the IC include a multistage IF amplifier-limiter, which provides high-gain amplification and signal conditioning for the FM sound carrier
Features:
- Electronic attenuator replaces the conventional volume control function.
- Volume control is accomplished by changing bias levels via an external variable resistor connected to Terminal 6, achieving attenuation in excess of 60dB.
- Differential peak detector requires only a single tuned coil for frequency demodulation.
- Internal Zener diode regulated power supply provides inherent high stability.
- Excellent AM rejection with a typical value of 50dB at 4.5MHz.
Specifications:
| Component Type | TV Sound System Integrated Circuit |
| Supply Voltage (V<sub>CC</sub>) Max. | 18 VDC |
| Input Limiting Voltage (V<sub>Lim</sub>) Typ. | 200 µV (at -3dB point, 4.5 MHz) |
| AM Rejection (AMR) Typ. | 50 dB (at 4.5 MHz, 30% AM) |
| Audio Output Voltage (RMS) | 0.75 V<sub>rms</sub> (Typ, Δf=±25 kHz) |
| Undistorted Output Voltage (RMS) | 2.5 V<sub>rms</sub> (Typ, THD=5%) |
| Total Harmonic Distortion (THD) Typ. | 0.9% (Recovered AF, f<sub>m</sub>=400 Hz) |
| Zener Regulating Voltage (V<sub>5</sub>) Typ. | 11.2 V |
| Quiescent Power Dissipation (P<sub>T</sub>) Max. | 400 mW |
| Operating Temperature Range | -40°C to 85°C |
| Package Type | 14-Lead Dual-in-Line Plastic (DIP) |
Applications:
- Complete Television Sound Systems and Subsystems.
- Sound Intermediate Frequency (IF) Amplifier-Limiters.
- FM Detectors requiring low external component count.
- Applications requiring a stable, integrated Electronic Attenuator (Volume Control).
- CATV Systems.
Package Include:
1x CA3065 IC
