LA1805 Sanyo Semiconductor Corporation, LA1805 Datasheet
LA1805
Available stocks
Related parts for LA1805
LA1805 Summary of contents
Page 1
... Radio-Casette Recorders, Music Centers Overview The LA1805 is a characteristics-improved version of the LA1810, with the same pin assignment and package as those of the LA1810. Improvements are made on the following point: Separation (35dB 48dB) and its dependence on freerunning frequency (Sep - f F Characteristic on page 5). ...
Page 2
... Parameter Recommended operating voltage Operating voltage range Note: The FM output level forms an N curve (LA1805) and an S curve (LA1806). LA1805: N curve (for US band) LA1806: S curve (for Japanese band). Your desired output level can be set by varying the output resistance. Operating Characteristics at Ta= =4.5V, See specified Test Circuit. ...
Page 3
... LA1805 Post Det FM IF Amp Level Det Muting AM IF Det Tuning AGC Indic. Drive Gnd 0 18k 3. LA1805 LED 0.047 Stereo Pilot Det Trig. Indic. Drive FF Phase Det VCO FF FF Stereo Decoder ILA01930 V CC 76kHz + 2SK212 check 3.3 F 1500pF *1 + 15k ...
Page 4
... How to use the LA1805 1. Forced monaural mode. Figures 1 and 2 show how to cause the forced monaural mode to be entered. (1) Connect pin through a resistor of 100k . (Turn ON the SW1 in Figure 1.) (2) Connect pin 15 to GND through a resistor of 47k . (Turn ON the SW2 in Figure 2.) LA1805 14 15 ...
Page 5
... Apply a 10.7MHz 100dB nonmodulation carrier as IF input signal and set to 76kHz 50Hz with the tuning indicator lighted. 4. Separation setting capacitor Cs The separation characteristic for the LA1805 alone (IF input) differs from that for the antenna input with a front end. This difference is caused by the characteristics of the front end and ceramic filter ...
Page 6
... 4 =98MHz f m =400Hz -- 100 --1000 ILA01940 ILA01942 LA1186N+LA1805 Attenuation -- Detuning Frequency f=98MHz 400Hz --30% mod V IN =100dB Mute off Mute on Mute on --800 --600 --400 --200 0 200 400 600 Detuning Frequency kHz LED ON Sensitivity -- R Figure 12 4 Reference (R=open 10k 15k 20k ...
Page 7
... Output 20mV const. 0 C.F, SFU-450B --10 --20 --30 --40 --50 --60 --30 --20 -- Detuning Frequency kHz Whistle Characteristics 0 --20 --40 --60 --80 --100 Input -- dBm LA1805 2 =10.7MHz f m =1kHz 75kHz dev. 2.0 1.5 1.0 0 --20 --40 --60 --80 --100 100 120 140 0 ILA01945 4 0 --4 --8 --12 --16 --20 20 ...
Page 8
... Characteristics --10 20 --20 30 -- Supply Voltage Temperature Characteristics --30 --20 -- Ambient Temperature Capture Range --6 --5 --4 --3 --2 -- Capture Range -- % --1 -- Supply Voltage LA1805 =10.7MHz f m =1kHz ILA01951 -- =10.7MHz --20 --10 --30 -- --30 ILA01953 ILA01955 60 IF input Nonmodulation ILA01957 Characteristics f c =1MHz f m =1kHz Supply voltage ...
Page 9
... Frequency Carrier Leak -- V CC 100 f=1kHz 75kHz dev. IF input 100dB 10 0dB : mono output level Supply Voltage SW2 Characteristics 5 2 =4.5V f=21MHz f m =1kHz 4 1.6 3 1.2 2 0 IEC Input -- dB LA1805 ILA01959 1 0 10k ILA01961 Free-Running Frequency Drift Characteristic --1 --2 --3 -- ...
Page 10
... ILA01970 LW Band Test Circuit 60 240pF 280 320 360 ILA01972 SW2 Characteristics Usable sensitivity (S / N=20dB Receiving Frequency MHz LW Characteristic f r =240kHz f m =1kHz LED- 100 ANT Input -- dBm HH-50161 (Mitsumi MA-7014 (Mitsumi LA1805 5 ILA01968 120 140 ILA01971 ILA01973 No.2887-10/14 ...
Page 11
... Sample Application Circuit: LA1186N+LA1805 FM/MW 100k + + 470pF 0 2200pF 0.047 F 27pF 0.022 F 0.47 F Note : The constants of parts * are changed from those of the LA1810. LA1805 1 F 6800pF 6800pF 0.047 0.047 F 1000pF 30pF 15pF 5pF 100 0.047 F 1000pF 18pF 1000pF L1 : TN-10896 (Mitsumi YT-30224 (Mitsumi) ...
Page 12
... The FM S curve at pin the opposite direction and the circuit in which AFC is provided is the same for the US band and Japanese band. 9 LA1805 10 7 AFC 100k 100k US (Upper-hetero) The LA1805 contains the output load resistors (Output load resistance=6.8k ) LA1805 LA1186N 10000pF 10000pF 20 CF ...
Page 13
... SW2 OSC • HW-40184 (Mitsumi 12T 28, L=1. SW2 ANT • YT-30117 (Mitsumi =95, L=1 bar antenna • HH-50161 (Mitsumi ILA01987 LA1805 f=10.7MHz 1kHz-100% mod 12 16 ILA01980 22T+49T, - 10T 17T, 0 L=260 =330 ( 200 L= =250 ( 150) MW OSC • HW-6193 (Mitsumi 32T 64T =140, L=140 ILA01983 ...
Page 14
... SANYO Semiconductor 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 January, 2006. Specifications and information herein are subject to change without notice. LA1805 PS No.2887-14/14 ...