LA1781M - Single-Chip Tuner IC for Car Radios

Overview

The LA1781M integrates all six blocks required in a car

radio tuner on a single chip.

Functions

• FM front end

• FM IF

• Noise canceller

• Multiplex

• AM up-conversion

• FM/AM switch

• MRC 

Features

• Improved noise reduction methods

— The FM front end provides excellent 3-signal

characteristics equivalent to those of the LA1193M.

— Superlative listenability due to improved medium and

weak field noise canceller characteristics.

— Improved separation characteristics

— Anti-birdie filter

— Improved AM and FM thermal characteristics

— Excellent FM signal meter linearity

— Modified N.C. circuit for improved noise rejection

• 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).

• Sample-to-sample variation reduction circuit built into

the FM IF circuit.

(Fixed resistors are used for the SD, keyed AGC, mute

on adjustment, ATT, SNC, and HCC functions.)

• The LA1781 inherits the block arrangement of the

LA1780M and supports pin-compatible designs.

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 PAYMENTS:

We support the following payment methods:

 1. Paypal

 2. Western Union 

 3. Bank Wire (TT)

 4. MoneyGram

Shipping:

1. MJD needs about 3 BUSINESS DAY to handle the order after received payment. after receiving your payment. Otherwise, we will state it in the invoice in advance.

2. MJD can Ship via your shipping account (DHL / FEDEX / UPS / TNT or others) as your instruction. Or Ship via our shipping account (We have a very good relationship with DHL and FEDEX with very special freight).

3. Regarding the declared value on the package for customs clearance, we are pleased to follow

your wishes, just feel free to inform us when ordering.

4. Any import fees or charges are the buyer's responsibility.

REFUNDS & RETURN:

We offer a warranty on all items that we sold. Item will be tested before ship,it will be in good condition,if there are some problems with the item,feel free to contact us.Please Email us to notify a defective item. Unless otherwise specified, this item comes with 30 days warranty from the shipment date.

You must contact us before returning any product. All returns must be made within 30 days from this shipment date.Return must be in new condition(the SAME CONDITION as it was sent to you)

Because of wholesale price is different from sample price, our website can not state. Please send your required part number via email Sales@hkmjd.com or skype id mjdccm898 to us.  As well as welcome you call us : 0755-83957301  We will send offer for you;  Sometimes manufacturer's price is unstable, so we don't adjust price in time. if you feel price is a little high for you, just feel free to contact us for consultation. Thank you for your support ！