HomedatasheetCA2111AE

CA2111AE Datasheet

FM if Amplifier-limiter And Quadrature Detector
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Description

Features, Applications

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[ /Title (CA21 11A) /Subject (FM IF AmplifierLimiter and Quadra ture Detector) /Autho r /Keywords (Harris Semiconductor, FM IF amplifier, quadrat ure detector, limiter, TV audio IF, high AM rejection,

Features

Input Limiting Voltage 10.7MHz. 400�V Input Limiting Voltage 5.5MHz. 250�V Typical AM Rejection 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

Description

The CA2111A provides a multistage wideband amplifierlimiter, 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 amplifierlimiter as a straight 60dB wideband amplifier. The amplifier-limiter features the excellent limiting characteristic 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.

PART NUMBER CA2111AE TEMP. RANGE (oC) to 85 PACKAGE 14 Ld PDIP PKG. NO. E14.3

AUDIO OUT 1 REF BIAS DC FB BYPASS 5 INPUT BYPASS 6 GROUND 7 14 DE-EMPHASIS V+ 12 QUADRATURE INPUT 11 QUADRATURE IN BUF 10 HIGH IF OUTPUT 9 LOW IF OUTPUT 8 NC

0.1�F 5 BIAS EMITTER FOLLOWER 1 3 AMPLIFIERLIMITER QUADRATURE DETECTOR 120pF 2

CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures. Copyright

Thermal Resistance (Typical, Note 1) JA (oC/W) PDIP Package. 150 Maximum Junction Temperature (Plastic Package). 150oC Maximum Storage Temperature Range. to 150oC Maximum Lead Temperature (Soldering 10s). 300oC

Temperature Range. to 85oC Supply Voltage Range (Typical). to 12V

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.

NOTES: JA is measured with the component mounted on an evaluation PC board in free air.
= 25oC Unless Otherwise Specified SYMBOL = 8V TEST CONDITIONS MIN TYP MAX UNITS pF k
Terminals DC Voltage Terminals 12 DC Voltage Supply Current, Pin 13

Amplifier Input Resistance Amplifier Input Capacitance Detector Input Resistance Detector Input Capacitance Amplifier Output Resistance Detector Output Resistance De-emphasis Resistance

DYNAMIC CHARACTERISTICS 8V, FM Modulation Frequency = 400Hz, Source Resistance = 50 Input Limiting Threshold Voltage AM Rejection Amplifier Voltage Gain Detector Recovered Audio Output Total Harmonic Distortion VI(LIM) AMR AV VO(AF) THD 10mVRMS, 100% FM, = 10mVRMS �VRMS dB VRMS %

DYNAMIC CHARACTERISTICS 12V, FM Modulation Frequency = 400Hz, Source Resistance = 50 Input Limiting Threshold Voltage AM Rejection Amplifier Voltage Gain Detector Recovered Audio Output Total Harmonic Distortion VI(LIM) AMR AV VO(AF) THD 10mVRMS, 100% FM, = 10mVRMS �VRMS dB VRMS %

DYNAMIC CHARACTERISTICS 12V, FM Modulation Frequency = 400Hz, Source Resistance = 50 Input Limiting Threshold Voltage AM Rejection VI(LIM) AMR 10mVRMS, 100% FM, 36 400 �VRMS dB

PARAMETER Amplifier Voltage Gain Detector Recovered Audio Output Total Harmonic Distortion = 25oC Unless Otherwise Specified (Continued) SYMBOL AV VO(AF) THD TEST CONDITIONS = 10mVRMS MIN TYP 0.72 1.5 MAX UNITS dB VRMS %

DYNAMIC CHARACTERISTICS 12V, FM Modulation Frequency = 400Hz, Source Resistance = 50 Input Limiting Threshold Voltage AM Rejection Amplifier Voltage Gain Detector Recovered Audio Output Total Harmonic Distortion VI(LIM) AMR AV VO(AF) THD 10mVRMS, 100% FM, = 10mVRMS �VRMS dB VRMS %

2 0.1�F AM/FM SIGNAL GENERATOR 5 0.1�F DISTORTION ANALYZER 50�F AC VTVM C1 C2 NOTE
DETECTOR TRANSFER CHARACTERISTICS UPPER PEAK MHz 5.63 10.9 LOWER PEAK MHz 5.37 10.5

NOTE: Input to the quadrature coil can be from either terminal 9 or terminal 10. Terminal 9 is normally used because it lessens the possibility of overloads during tuning. The use of terminal 10 increases the limiting sensitivity significantly and has been used successfully in these tests.


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