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LA1832M fiches techniques PDF

Sanyo Semicon Device - Support for AM Stereo and Electronic Tuning Radio Cassette Recorder/Music Center-Use Single-Chip IC

Numéro de référence LA1832M
Description Support for AM Stereo and Electronic Tuning Radio Cassette Recorder/Music Center-Use Single-Chip IC
Fabricant Sanyo Semicon Device 
Logo Sanyo Semicon Device 





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LA1832M fiche technique
lOrdering number: EN4805B |
isArno
NO.4B05B
Monolithic Linear IC
LA1832,1832M
Support for AM Stereo and Electronic Tuning
Radio Cassette Recorder/Music Center-Use
Single-Chip IC (AM/FM IF + MPX)
Overview
The LA 1832 and 1832M are single-chip AM/FM IF and
MPX tuner ICs that support electronic tuning. These
chips were developed for consumer audio systems and
is optimal for auto-seek systems based on IF count
methods used together with SD.
Since no adjustments are required in the FM detector
and MPX VCO circuits, use of these chips can
significantly reduce the number of adjustment steps in
the end-product manufacturing line.
Functions
AM: RF amplifier, mixer, oscillator (with ALC),
IF amplifier, detector AGC, oscillator buffer,
tuning indicator, IF buffer output, stereo
IF output.
FMIF: IF amplifier, quadrature detector, S curve
detection, tuning indicator, IF buffer output,
S-meter
MPX: PLL stereo decoder, stereo indicator, forced
mono, VCO slop
Features
• Major reduction in required adjustments
- FM detector: No adjustments
(ceramic discriminator used)
- M P X VCO: No adjustments
(ceramic resonator used)
• Tuning indicator pin provided (can be used as a
narrowband stop signal or a muting drive output):
SD output
• Supports IF count scheme
• Built-in SD time constant switching circuit
• Variable FM stop sensitivity and bandwidth
• Built-in AM local oscillator buffer
» Supports AM low-cut control
• Pin compatibility with the LA 1831 (See page 9 for
details on the differences between the LA1832 and the
LA1831.)
• Built-in IF output function for AM stereo
Package Dimensions
unit: mm
3067-DIP24S
[LA 1832]
»a
.nnnnnpnnnrinn
7I
22
uuuuuuuuuu i L
ZI.Z
0.48 0.95 1.78
3112-MFP24S
[LA1832M]
SANYO: DIP24S
1
BTBTHTHlTBTB/i
tSK
0.35
1.0
SANYO: MFP24S
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Maximum supply voltage
Indicator drive current
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
V c c max
•LED
Pd max
Topr
Tstg
Conditions
Pins 6 and 7
Ta S 70°C (LA1832)
Ta £ 70°C (IA1832M)
Ratings
9.0
20
400
270
-20 to + 70
-40 to +125
Unit
V
mA
mW
mW
SANYO Electric Co., Ltd. Semiconductor Business Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10,1 Chomc, Ucno, Tailo-ku, TOKYO, 110 JAPAN
30395TH (OT) No. 4805-1/15

PagesPages 15
Télécharger [ LA1832M ]


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