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LA1787M Datasheet

  • LA1787M

  • Single-Chip Tuner IC for Car Radios

  • 54頁

  • SANYO

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Ordering number : ENN6655
Monolithic Linear IC
LA1787M
Single-Chip Tuner IC for Car Radios
Overview
The LA1787M integrates all six blocks required in a car
radio tuner on a single chip.
鈥?/div>
鈥?/div>
Functions
鈥?FM front end
鈥?FM IF
鈥?Noise canceller
鈥?Multiplex
鈥?AM up-conversion
鈥?FM/AM switch
鈥?MRC
鈥?/div>
Features
鈥?Improved noise reduction methods
鈥?The FM front end provides excellent 3-signal
characteristics equivalent to those of the LA1193M.
鈥?Superlative listenability due to improved medium and
weak field noise canceller characteristics.
鈥?Improved separation characteristics
鈥?Anti-birdie filter
鈥?Improved AM and FM thermal characteristics
鈥?/div>
鈥?/div>
鈥?Excellent FM signal meter linearity
鈥?Modified N.C. circuit for improved noise rejection
Improved AM adjacent channel interference
characteristics (鈭?0 kHz)
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.)
Improved FM separation temperature characteristics
The LA1787 inherits the block arrangement of the
LA1780M and supports pin-compatible designs.
Package Dimensions
Unit:mm
3159A-QIP64E (14
脳
14)
[LA1787M]
48
49
33
32
0.8
14.0
17.2
14.0
Allowable power dissipation,
Pdmax 鈥?mW
Independent IC
64
1
0.8
(1.0)
(2.7)
0.35
17
16
0.15
3.0max
SANYO: QIP64E (14
脳
14)
Ambient temperature, Ta 鈥?擄C
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鈥檚
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
72602RM (OT) No. 6655-1/54
0.1
17.2
Mounted on a 40
脳
80
脳
1.3 mm
3
glass epoxy printed circuit board

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