LA1266 Sanyo Semiconductor Corporation, LA1266 Datasheet

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LA1266

Manufacturer Part Number
LA1266
Description
FM/AM tuner of electronic tuning type
Manufacturer
Sanyo Semiconductor Corporation
Datasheet

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Ordering number : EN2291C
LA1266
Features
Functions
• Minimum number of external parts required.
• Excellent S/N
• Local OSC with ALC
• Local OSC buffer
• Tuning indicator pin (common with narrow-band stop signal and muting drive output)
• Variable stop sensitivity (variable separately for FM, AM)
• Less tweet interference
• Signal meter pin
• IF count output
FM : IF amplifier, quadrature detector, AF preamplifier, signal meter, IF count outputlifier, tuning indicator drive output
AM : RF amplifier, MIX, OSC (with ALC), IF amplifier, detector, AGC, signal meter, tuning indicator drive output
(common with stop signal, muting drive output)
(common with stop signal), IF count output, local OSC buffer.
"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be
intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace
instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety
equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case
of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee
thereof. If you should intend to use our products for applications outside the standard applications of our
customer who is considering such use and/or outside the scope of our intended standard applications, please
consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our
customer shall be solely responsible for the use.
Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate
the performance, characteristics, and functions of the described products in the independent state, and are not
guarantees of the performance, characteristics, and functions of the described products as mounted in the
customer
device, the customer should always evaluate and test devices mounted in the customer
equipment.
'
s products or equipment. To verify symptoms and states that cannot be evaluated in an independent
Monolithic Linear IC
Electronic Tuning Type
AM/FM Tuner System
52808 MS JK/N3097HA (KT)/41594HK/9047AT/7256KI, TS No.2291-1/11
'
s products or

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LA1266 Summary of contents

Page 1

... Ordering number : EN2291C Monolithic Linear IC LA1266 Electronic Tuning Type AM/FM Tuner System Features • Minimum number of external parts required. • Excellent S/N • Local OSC with ALC • Local OSC buffer • Tuning indicator pin (common with narrow-band stop signal and muting drive output) • ...

Page 2

... IF buffer output 10.7MHz 1kHz Quiescent current Input limiting sensitivity Demodulation output S/N ratio Total harmonic distortion Signal meter output LED drive sensitivity LED drive bandwidth AM rejection ratio IF buffer output LA1266 Symbol Conditions V CC max Pins 7,8, Pin Pin Pin 24 Ta ≤ 60°C ...

Page 3

... Package Dimensions unit : mm (typ) 3067B Block Diagram LA1266 No.2291-3/11 ...

Page 4

... How to use LA1266 1. LED driver, muting drive output, stop signal (SD). • For LED drive, muting drive output, stop signal, the output at pin 8 is used. • Voltage on pin 8, when tuned, turns from "H" to "L" . (Active-low) • Signal bandwidth at pin 8 − For AM, the bandwidth depends on the C.F (BFU450CN) at pin 14 capacitor is connected in place of the C.F, the bandwidth will get wider. − ...

Page 5

... To prevent whistle from worsening, make the pattern of AM output pin 15 as short as possible buffer output Application of a voltage to pin 13 (STRQ) causes AM IF(455kHz) signal (at AM mode) and FM IF(10.7MHz) signal (at FM mode delivered at pin 11 and pin 10, respectively recommended that the voltage to be applied to Test Circuit : FM, AM-MW LA1266 No.2291-5/11 ...

Page 6

... Antenna input voltage -- dB/m Fidelity Characteristic 1MHz 100dB/m Input constant 4 30%mod 100 1k Modulation frequency -- Hz LA1266 FM Current Drain Characteristic 1MHz 140 160 Input voltage dBµ JK126609 THD -- V IN (ANT 1MHz 120 140 Antenna input voltage (ANT) -- dB/m JK126611 AM S Meter Voltage Characteristic 3 ...

Page 7

... input 0 LED-on voltge 40 30 LED-lighting sensitivity 20 Output 20mV sensitivity, 1kHz-30% mod 10 0 -30 -20 - Ambient temperature °C LA1266 AM Temperature Characteristic (1) 28 -12 26 Detection output Input = 80dBµ, 1kHz-30% mod 24 - -16 190 40 180 170 50 160 150 60 THD Input = 80dBµ, 1kHz-30% mod 3.0 300 2 ...

Page 8

... LA1266 No.2291-8/11 ...

Page 9

... L = 248µH ± 10% AM IFT coil Matching coil for SFZ450B (2-element type HW-6145 (Mitsumi 67T 10T 85T ± 20 450kHz Internal 180pF LA1266 1200 1400 JK126627 22T + 49T Tight solenoid direct winding 17T 0.5φ space winding tight solenoid winding 260µ 330 ( 15µ 250 ( MW • ...

Page 10

... Sample Application Circuit 0.047µF 20Ω 0.47µF 1µF 3.3µF 0.047µF 10µF SVC 203 SVC 100kΩ 10µF 10pF SVC 203 LA1266 : LA1177, LA1266, LM7000 100µF 1kΩ 1000pF 10pF 220Ω 0.022µF 10µF 24Ω 62kΩ 2200pF No.2291-10/11 ...

Page 11

... SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's intellctual property rights which has resulted from the use of the technical information and products mentioned above. This catalog provides information as of May, 2008. Specifications and information herein are subject to change without notice. LA1266 PS No.2291-11/11 ...

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