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CA2111A Scheda tecnica(PDF) 1 Page - Intersil Corporation |
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CA2111A Scheda tecnica(HTML) 1 Page - Intersil Corporation |
1 / 5 page 8-13 May 1999 CA2111A FM IF Amplifier-Limiter and Quadrature Detector CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures. Copyright © Harris Corporation 1999 File Number 612.2 Features • Input Limiting Voltage At 10.7MHz . . . . . . . . . . . 400 µV • Input Limiting Voltage At 4.5, 5.5MHz . . . . . . . . 250 µV • Typical AM Rejection At 10.7MHz. . . . . . . . . . . . . 45dB • Provision for Output from 3-Stage IF Amplifier Section • Low Harmonic Distortion • Quadrature Detection Permits Simplified Single-Coil Tuning • Extremely Low AFC Voltage Drift Over Full Operating Temperature Range • Minimum Number of External Components Required Applications • FM IF Sound • TV Sound IF Description The CA2111A provides a multistage wideband amplifier- limiter, a quadrature detector, and an emitter-follower output stage. This device is designed for use in FM receivers and in the sound IF sections of TV receivers. In addition, an output terminal is provided which allows the use of the amplifier- limiter as a straight 60dB wideband amplifier. The amplifier-limiter features the excellent limiting character- istic of 3 cascaded differential amplifiers. The quadrature detector requires only one coil in the associated outboard circuit and therefore, tuning is a simple procedure. A unique feature of the CA2111A is its exceptionally low AFC voltage drift over the full operating-temperature range. Pinout CA2111A (PDIP) TOP VIEW Block Diagram Part Number Information PART NUMBER TEMP. RANGE (oC) PACKAGE PKG. NO. CA2111AE -40 to 85 14 Ld PDIP E14.3 AUDIO OUT REF BIAS NC IF IN DC FB BYPASS INPUT BYPASS GROUND DE-EMPHASIS V+ QUADRATURE INPUT QUADRATURE IN BUF HIGH IF OUTPUT LOW IF OUTPUT NC 1 2 3 4 5 6 7 14 13 12 11 10 9 8 2 3 4 5 6 8 9 10 AMPLIFIER- LIMITER QUADRATURE DETECTOR 13 V+ 11 12 14 EMITTER FOLLOWER 1 L1 C1 120pF 14 µH 3pF 0.003 µF 0.1 µF 0.1 µF 51 Ω BIAS +12V 7 [ /Title (CA21 11A) /Sub- ject (FM IF Ampli- fier- Limiter and Quadra ture Detec- tor) /Autho r () /Key- words (Har- ris Semi- con- ductor, FM IF ampli- fier, quadrat ure detec- tor, lim- iter, TV audio IF, high AM rejec- tion, OBSOLETE PRODUCT NO RECOMMENDED REPLA CEMENT Call Central Applications 1-800-442-7747 or email: centapp@harris.com |
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