LA7583 Sanyo Semiconductor Corporation, LA7583 Datasheet
LA7583
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LA7583 Summary of contents
Page 1
... Ordering number: EN5177 Overview The LA7583 is a VIF + SIF IC that requires no adjustments. In order to eliminate the need for adjustments in the VIF block, a multi-network PLL has been developed and adopted for video detection. In the SIF block, adjustments were eliminated by using gyrator technology in the FM quadrature detector. In ...
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... Maximum supply voltage Circuit voltage Circuit current Allowable power dissipation Operating temperature Storage temperature (Automatic Adjustment Control) Note: Current flowing into the IC is positive (no signal) and current flowing out is negative. Pin Assignment Top View LA7583 Symbol Conditions V3, V11 I1, I10, I23 I3, I21 I15, I19 % 50 ° ...
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... VCO1 maximum variable range VCO2 maximum variable range VCO1 control sensitivity VCO2 control sensitivity [1st SIF Block] 4.5 MHz output gain 4.5 MHz output level 1st SIF maximum input level Si (max) 1st SIF input resistance Ri (SIF1) 1st SIF input capacity Ci (SIF1) LA7583 Symbol Conditions ...
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... FM detection output voltage AMR AMR Total harmonic distortion SIF S/N S/N(SIF) [Mute defeat] FM mute V24T AFT defeat voltage VD11 J/U SW start voltage VJU24 AV mute voltage VM23 LA7583 Conditions kHz, 400 100 mV kHz, 400 30%, 400 Hz THD kHz, 400 kHz, 400 Hz min typ max Unit 47 ...
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... Equivalent Circuit Block Diagram Multinetwork PLL (Automatic Adjustment Control) The LA7583’s PIF detector uses a multinetwork PLL and a buzz canceller. The multinetwork PLL is a PLL detector that was developed in order to eliminate the need for adjustments in video detection. This PLL detector offers the following features: (1) Eliminates the need for adjustments in video detection ...
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... As a result, the multinetwork PLL operates as an ideal PLL detector. Automatic Quadrature Tuning (AQT) A quadrature detector that is controlled automatically is used in the FM detector. The AQT in the LA7583 consists of the blocks shown in the following diagram. The FM detection filter (gyrator) is controlled at 4.5 MHz by the control current (Iref1) generated by reference circuit 1. At the same time, precision control is performed by using the control current (Iref2) derived by detecting the offset from the detected output so that the FM detector phase relationship is 90 ° ...
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... Symbol No DETECTOR OUTPUT 2 FM AQT FILTER 3 RF AGC OUTPUT LA7583 Circuit Configuration Pin audio FM output pin. A 100 resistor is connected in series with the emitter follower. (1) Monaural applications (2) Audio multiplexing applications Pin 2 is the FM Automatic Quadrature Tuning filter pin. This pin controls the quadrature detector so that it remains at its center frequency (4 ...
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... IF AGC 5 VIF INPUT 6 9 1st SIF INPUT LA7583 Circuit Configuration Pin 4 is the 1st IFAGC filter pin. This filter smoothes out the peaks detected in the signal by the AGC detector, and generates the AGC voltage. The 2nd AGC filter (lag lead filter) is built in using filter technology. ...
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... No. 10 VCOR 11 AFT OUTPUT 12 VCO2 LA7583 Circuit Configuration Pin 10 is the pin for connecting the resistor that determines the impedance of the oscillation point of the oscillating circuit by the ceramic oscillator. Oscillation frequency variations can be reduced by connecting a resistor with a tolerance of 1% between pin 10 and pin 12 ...
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... Symbol No. 13 VCO COIL 14 15 VIDEO OUTPUT 16 APC1 FILTER LA7583 Circuit Configuration Pins 13 and 14 are the VCO tank circuit. . VCO coil recommended . Make the circuit pattern between the IC and the coil as short as possible. Pin 15 is the SIF carrier (4.5 MHz)-contained video output pin ...
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... No. 17 EQUALIZER INPUT 18 EQUALIZER FILTER 19 EQUALIZER OUTPUT LA7583 Circuit Configuration Pin 17 is the equalizer amplifier input pin. A signal which has passed through a 4.5 MHz trap is input through pin 17 and is output . through pin 19. Pin 18 is the equalizer pin. The equalizer amplifier is of the voltage follower type with a voltage gain ...
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... No. 21 1st SIFOUT 22 APC2 FILTER 23 RF AGC VR LA7583 Circuit Configuration Pin 21 is the 1st SIF output pin. The SIF carrier output level is approximately 50 mVrms. Pin 22 is the APC2 filter pin. The filter smoothes the output after comparing the phase of VCO2 with that of VCO1 x 1/8 in APC2 ...
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... V and 4 V are applied to pin 22. 2. Design notes a. When selecting the L value, the LA7583 must be soldered directly on the board socket is used, an error in the VCO center frequency will arise from the capacitance of the socket. ...
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... Japan TSF1137U U.S. TSF1241U(with IS-31 Trap) (b) INTER Carrier SAW Filter Japan TSF1138P U.S. TSF1220P LA7583 TSF2xxx SAW filter), the low impedance and small feedthrough diminish the effects of 3 SAW filter is suitable for Japan and U.S. bands where the IF frequency is 3 No.5177-14/15 ...
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... Test circuit Diagram LA7583 (U.S.) *1. TDK ceramic oscillator FCR5.71M2SF3 *2. Micro-inductor 5LC1R8, made by Tokyo Parts Industry Co., Ltd. No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or indirectly cause injury, death or property loss ...