LA7565E Sanyo Semiconductor Corporation, LA7565E Datasheet
LA7565E
Related parts for LA7565E
LA7565E Summary of contents
Page 1
... Ordering number :ENN6100A Overview The LA7565E and LA7565KM are PAL/NTSC multi- system audio VIF/SIF signal-processing ICs that adopt a minimal-adjustment technique. The VIF circuit adopts a minimal-adjustment technique in which AFT adjustment is made unnecessary by VCO adjustment to simply end product adjustment. The FM detector circuit uses PLL detections to support multi-system audio detection ...
Page 2
... Circuit current Allowable power dissipation Operating temperature Storage temperature Note: * When mounted 1.6 mm epoxy glass laminate printed circuit board. Operating Conditions 25°C Parameter Recommended supply voltage Operating supply voltage LA7565E, 7565KM unit: mm 3112-MFP24S 24 1 SANYO: DIP24S Symbol Conditions V max CC V13, V17 ...
Page 3
... Maximum output level Carrier suppression ratio Oscillator level Oscillator leakage Oscillator stopped current Note: *The FM detector output level can be reduced and the FM dynamic range can be increased by inserting a resistor and a capacitor in series between pin 23 and ground. LA7565E, 7565KM = 38.9 MHz CC Symbol Conditions I 5 ...
Page 4
... Pd max - Ta 800 720 700 600 500 400 300 200 100 0 - Ambient temperature, Ta – °C Pin Assignment LA7565E, 7565KM [LA7565E] 800 Mounted 720 700 600 500 Independent IC 420 400 300 200 100 100 - LA7565E/7565KM max - Ta [LA7565KM] 72 1.6 mm printed circuit board Ambient temperature, Ta – °C ...
Page 5
... Internal Equivalent Circuit and External Circuit Diagram RFAGC AUDIO OUT PUT 5 620 BPF 6MHz 330 LA7565E, 7565KM VR SAW ( 400 400 VIDEO OUT IF IN PUT RF AGC OUT PUT SAW ( VCO COIL 330 AFT OUTPUT V CC GND T00049 No. 6100-5/18 ...
Page 6
... AC Characteristics Test Circuit 1st SIF OUT ( NICAM OUT ) FM DET OUT 5 DET LIM AMP 2nd SIF IN CONV.OUT Test Circuit LA7565E, 7565KM VIF AGC RF AGC V R GND VIF RF IF AMP AGC AGC AGC VIDEO DET HPF HPF MIX EQ HPF AMP VIDEO 330 OUT ...
Page 7
... Sample Application Circuit PAL SPLIT 5 OUT DET LIM AMP BPF 330 NT (US) SPLIT 5 OUT DET LIM AMP BPF 330 LA7565E, 7565KM IN PUT TSF5315 SAW ( S ) SAW ( P ) GND VIF RF IF AMP AGC AGC AGC VIDEO DET HPF HPF MIX EQ HPF AMP PUT TSF1241 ...
Page 8
... JAPAN SPLIT 5 OUT DET LIM AMP BPF 330 NT (US) INTER 5 OUT DET LIM AMP BPF 330 LA7565E, 7565KM IN PUT TSF1137 SAW SAW ( P ) GND VIF RF IF AMP AGC AGC AGC VIDEO DET HPF HPF MIX EQ HPF AMP PUT TSF5220 SAW ( P ) GND 22 21 ...
Page 9
... Since there is no way to defeat the AFT circuit, connect a 100-kΩ resistor and a 0.01-µF capacitor in parallel between pin 13 and ground. • When the RF AGC circuit is not used: Leave pins 14 and 21 open. A 0.01-µF capacitor must be inserted between pin 21 and ground to prevent oscillation DET LIM AMP HPF 1 2 LA7565E, 7565KM IN PUT TSF5315 SAW ( S ) SAW ( P ) GND ...
Page 10
... An external 10-kΩ resistor must be inserted between pin 3 and ground if this circuit is not used. Attaching this external resistor stops the 500-kHz oscillator and the converter can be used as an amplifier. LA7565E, 7565KM Pin function 4.2V 3 200 ...
Page 11
... VCO is controlled over the path marked B in the figure and the loop 9 APC filter gain is increased. We recommend values of between 150 and 390 Ω, and C = 0.47 µF for this APC filter. LA7565E, 7565KM Pin function G 0: Equivalent circuit OUTPUT ...
Page 12
... This output controls the tuner RF AGC. There is a 200-Ω series protection resistor inserted in the 14 RF AGC output emitter output. Determine the value of the external bleeder resistor based on the characteristics of the tuner used. LA7565E, 7565KM Pin function to tuner Equivalent circuit ...
Page 13
... IF AGC filter internally to the IC is built in. A 0.022-µF external capacitor is used. The value of this capacitor must be adjusted based on an analysis of the sag, AGC speed, and other aspects. LA7565E, 7565KM Pin function Equivalent circuit A12063 ...
Page 14
... A 600-Ω resistor is attached to the emitter follower internally for signal output. When an intercarrier sound system is used, the buzz characteristics can be improved by forming a chrominance carrier trap on this pin. 22 First SIF output LA7565E, 7565KM Pin function Construct a chrominance carrier trap here ...
Page 15
... FM detector output may degrade the stereo characteristics. If this is a problem add the resistor R1 between pin 24 and ground. R1 ≥ 5.1 kΩ • In applications that support mono: Attach an external de-emphasis circuit with the following time constant CR2 LA7565E, 7565KM Pin function R2 C Equivalent circuit ...
Page 16
... The situation shown in figure on the right makes it easier to acquire flat band characteristics than that in figure on the left. The high band is reduced Frequency With the tuning set to the IF frequency LA7565E, 7565KM SAW filter characteristics The high band is extended ...
Page 17
... It is also desirable to use a capacitor with similarly low temperature coefficient characteristics. Note: Applications that use an external capacitor here must use a chip capacitor ordinary capacitor is used, problems such as the oscillator frequency changing with the capacitor orientation may occur. LA7565E, 7565KM 45.75 MHz ...
Page 18
... SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of April, 2003. Specifications and information herein are subject to change without notice. LA7565E, 7565KM PS No. 6100-18/18 ...