Product Summary

The LA1781 is a Single-Chip Tuner IC for Car Radio. Functions of the LA1781 are FM front end, FM IF, Noise canceller, Multiplex, AM up-conversion, FM/AM switch, MRC.


Parametrics

LA1781 absolute maximum ratings: (1)Maximum supply voltage: VCC1 max Pins 6, 40, and 61 is 9 V, VCC2 max Pins 7, 45, 54, 59, and 60 is 12 V; (2)Allowable power dissipation Pd max Ta 2 55℃: 950 mW; (3)Operating temperature Topr: –40 to +85 ℃; (4)Storage temperature Tstg: –40 to +150 ℃.

Features

LA1781 features: (1)The FM front end provides excellent 3-signal characteristics equivalent to those of the LA1193; (2)Superlative listenability due to improved medium and weak field noise canceller characteristics.; (3)Improved separation characteristics; (4)Anti-birdie filter; (5)Improved AM and FM thermal characteristics Double conversion AM tuner (up conversion) Reduces the number of external components required as compared to earlier double conversion tuners, in particular, no crystal is required (when used in conjunction with the LC72144); (6)Sample-to-sample variation reduction circuit built into; (7)the FM IF circuit(Fixed resistors are used for the SD, keyed AGC, mute on adjustment, ATT, SNC, and HCC functions) .

Diagrams

LA1781 dimension

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LA1781M
LA1781M

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Image Part No Mfg Description Data Sheet Download Pricing
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LA17000M
LA17000M

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LA1776M
LA1776M

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LA1780M
LA1780M

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Negotiable 
LA1781M
LA1781M

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Negotiable 
LA1784M
LA1784M

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Negotiable 
LA1787M
LA1787M

Other


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Negotiable