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LA1780 View Datasheet(PDF) - SANYO -> Panasonic

Part Name
Description
View to exact match
LA1780
SANYO
SANYO -> Panasonic SANYO
LA1780 Datasheet PDF : 38 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
Ordering number : ENN5724A
Monolithic Linear IC
LA1780M
Single-Chip Tuner IC for Car Radios
Overview
The LA1780M integrates all six blocks required in a car
radio tuner on a single chip. The LA1780M is based on
the LA1888NM, and features improvements to each of the
blocks; improvements designed to provide improved noise
characteristics, especially for noise related to multipath,
three-signal intermodulation distortion, and two-signal
suppression.
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.
Mounted on a 40 × 80 × 1.3 mm3
glass epoxy printed circuit board
Independent IC
— 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.)
• Since the LA1780M retains the block structure of the
LA1888NM, products using that IC can be easily
converted, allowing further end product miniaturization.
Package Dimensions
Unit:mm
3159-QFP64E
[LA1780M]
17.2
14.0
1.6
1.0 0.8
0.35
1.0
33
48
32
49
0.15
Ambient temperature, Ta — °C
64
1
17
16
0.1
2.7
15.6
0.8
SANYO: QFP64E (QIP64E)
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft’s
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
33100TN (OT)/92498RM (OT) No. 5724-1/38
 

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