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PDF LA1836M Data sheet ( Hoja de datos )
| Número de pieza | LA1836M | |
| Descripción | Single-Chip Home Stereo Electronic Tuning IC | |
| Fabricantes | Sanyo Semicon Device | |
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Ordering number : EN4787A
Monolithic Linear IC
LA1836, 1836M
Single-Chip Home Stereo Electronic Tuning IC
Overview
AM: RF amplifier, mixer, oscillator (with ALC), IF
amplifier, detector, AGC, oscillator buffer, tuning
indicator (narrow-band SD), IF buffer output, IF output
for AM stereo
• FM IF: IF amplifier, quadrature detector, band muting,
tuning indicator, IF buffer output, S-meter
• MPX: PLL stereo decoder, stereo indicator, forced
mono, VCO stop function, adjacent channel interference
rejection function (114 kHz), post-amplifier (with
muting function)
Features
• Reduced number of adjustments (adjustment-free MPX
VCO: ceramic resonator adopted)
• Tuning indicator pin (Can be used as a narrow-band stop
signal and as a muting output driver.)
• Variable FM stop sensitivity and band
• Variable AM stop sensitivity
• Built-in AM local oscillator buffer
• Variable AM low cut control
Package Dimensions
unit: mm
3196-DIP30SD
[LA1836]
unit: mm
3073A-MFP30S
[LA1836M]
SANYO: DIP30SD
SANYO: MFP30S
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
O3097HA (OT)/82294TH (OT) B8-0904, B8-0850 No. 4787-1/13
1 page  
Pin Functions
Pin No.
Function
Voltage
1 FM IF input
VREG
LA1836, 1836M
Internal equivalent circuit
Remarks
Input impedance ri = 330 Ω
2 AM mixer output
VCC
3 FM IF input bypass
VREG
Also used for the AM noise filter
4 REG
VREG
VREG = 3.6 V
5 AM IF input
VREG
6 GND
0V
7 Tu – LED
8
ST – LED, AM – IF
output
VCC
VCC
9 FM detector
VCC
10 VCC
VCC
AM/FM IF buffer output,
11 output control SW
0V
(muting switch)
Input impedance ri = 2 kΩ
Active low
Open collector
AM stereo IF output (pin 8)
Recommended detector coil: 600TEAS-8199Z
(Toko)
SA281 (Sumida)
The post-amplifier muting turns on for applied
voltages of 1.3 V and over.
The IF buffer output turns on at 4.0 V and over.
Recommended muting on control voltage: 1.9 V
Continued on next page.
No. 4787-5/13
5 Page 
LA1836, 1836M
No. 4787-11/13
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet LA1836M.PDF ] | |
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