參數資料
型號： LA1136N
廠商： Sanyo Electric Co.,Ltd.
英文描述： AM Tuners for Car Radios and Home Stereos(應用于車載電臺和家庭立體聲的AM調諧器)
中文描述： 上午車用收音機調諧器和家庭影院（應用于車載電臺和家庭立體聲的上午調諧器）
文件頁數： 1/28頁
文件大?。?/td> 573K
代理商： LA1136N
AM Tuners for Car Radios and Home Stereos
Overview
The LA1136N/NM and LA1137N/NM are high-performance
AM electronic tuner ICs offering sophisticated functions. They
are especially suited for use in car radio and home stereo
(antenna: loop) applications.
Functions
.
MIX
.
OSC (with ALC)
.
IF amplifier
.
Detector
.
AGC (normal)
.
RF wide-band AGC
.
Auto search stop signal (Signal meter output)
.
Local oscillation buffer output
.
IF band switching circuit (for LA1136N only)
.
IF count buffer
.
Stop detector output (can be set independently)
.
Tweet prevention circuit
.
AGC (RF, IF) time constant switching circuit
.
IF AGC circuit
.
Pin-diode driver
.
AM stereo decoder IF output (for LA1136N only)
.
Circuit preventing incorrect seek operation
Features
.
Excellent cross modulation characteristic: Meets the
requirements for preventing not only adjacent-channel
interference but also interference caused by all channels
within broadcast band.
.
Narrow-band signal meter output: Usable as auto search stop
signal. Has linearity up to 100 dBμ.
.
Local oscillation buffer output: Facilitates designing of
electronic tuner system, frequency display, etc.
.
OSC (with ALC): Improves tracking error because
oscillation output is stabilized at a low level (350 mVrms:
LA1137N) for varactor diode.
.
MIX: Double-balanced differential MIX meeting the
requirements for preventing spurious interference, IF
interference.
.
Good characteristic at high input: 130 dBμ input
fm = 400 Hz 80%mod THD = 0.5% typ.
.
High S/N: Good S/N at medium input (55 dB typ).
.
Usable sensitivity: (S/N = 20 dB input): 25 dBμ
(when using 2SK715 )
.
V
CC
variation compensation: Less variation in gain,
distortion: 8 to 12 V
AM stereo capability (LA1136N only)
.
IF band switching circuit on chip; controlled by
microcontroller
.
Oscillating circuit for AM stereo; SUB S/N improved to
6 dB
.
IF output for AM stereo decoder
.
Improved tweet characteristics: 10 dB increase, controlled by
microcontroller
.
Improved cross modulation characteristics, especially
sensitivity suppression characteristics: 15 dB improvement,
wide-band AGC operation even for SW band interference
.
Improved low-frequency modulation distortion
.
Improved temperature characteristics: S-meter, SD sensitivity
.
Faster RF AGC response: RF: 1/3; IF: 1/8 (compared to
predecessors)
.
Improved capability for driving external RF AGC transistors:
I
B
max = 200 μA
.
Measures to prevent incorrect seek operation
IF count buffer on chip; controlled by microcontroller
.
Time constant switching circuit on chip for RF and IF
AGC
.
IF AGC clear circuit on chip
.
Measures that prevent stopping one station too soon
Ordering number: EN 3507
Monolithic Linear IC
LA1136N, 1136NM, 1137N, 1137NM
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
93097HA(II)/4281TS(US) No.3507-1/28
相關PDF資料
PDF描述
LA1140 FM IF System for Car Radio
LA1143 FM IF System for Car Radios
LA1145 FM IF System (Quadrature Detector) for Car Radio
LA1145M FM IF System (Quadrature Detector) for Car Radio
LA1150N FM IF Amplifier for Car Radio
相關代理商/技術參數
參數描述
LA1136NM 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:AM Tuners for Car Radios and Home Stereos
LA1137 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:AM Tuners for Car Radios and Home Stereos
LA1137M 制造商:未知廠家 制造商全稱:未知廠家 功能描述:
LA1137N 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:AM Tuners for Car Radios and Home Stereos
LA1137NM 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:AM Tuners for Car Radios and Home Stereos
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