Ordering number : EN2012A Monolithic Linear IC LA1267 FM/AM Tuner of Electronic Tuning Type Functions Package Dimensions FM : IF amplifier, quadrature detector, AF preamplifier, unit : mm signal meter, tuning indicator drive output (common 3067-DIP24S with stop signal, muting drive output). AM : RF amplifier, MIX, OSC (with ALC), IF amplifier, detector, AGC, signal meter, tuning indicator drive output (common with stop signal), IF signal output. [LA1267] 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). • Variable stop sensitivity (variable separately for FM, AM) • Low whistle. • Signal meter pin. • Espesially suited for AM stereo, IF count electronic tuning because of AM IF signal output. SANYO : DIP24S Specifications Maximum Ratings at Ta=25°C, See specified Test Circuit. Parameter Symbol Conditions Ratings Unit Maximum supply voltage VCC max Pins 7, 8, 19 16 V Flow-in current I8 Pin 8 20 mA I22 Pin 22 1 mA I24 Pin 24 2 mA Allowable power dissipation Pd max Ta≤60°C 650 mW Operating temperature Topr –20 to +70 °C Storage temperature Tstg –40 to +125 °C Flow-out current Operating Conditions at Ta=25°C Parameter Symbol Recommended operating voltage VCC Operating voltage range VCC op Conditions Ratings Unit 8.5 V 6 to 14 V SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN N2897HA (KT)/40594HK/D105KI, TS No.2012-1/14 LA1267 Operating Characteristics at Ta=25°C, VCC=8.5V, See specified Test Circuit Parameter Symbol Conditions min Ratings typ max Unit [AM : f=1MHz] Quiescent current Icco No input Detection output VO1 VIN=20dBµ, 400Hz, 30% mod. 30 VO2 VIN=80dBµ, 400Hz, 30% mod. 110 S/N1 VIN=20dBµ 16 20 dB S/N2 VIN=80dBµ 49 54 dB THD1 VIN=80dBµ, 400Hz, 30% mod. 0.3 1.0 % THD2 VIN=107dBµ, 400Hz, 30% mod. 0.5 2.0 % VSM 1 No input 0 0 0.2 V VSM 2 VIN=80dBµ 2.4 2.8 3.1 V LED lighting sensitivity VLED on ILED=1mA Local OSC buffer output VOSC fOSC=1.45MHz Quiescent current Icco No input Input limiting sensitivity –3dBL.S. 3dB down, 400Hz, 100% mod. Demodulation output VO VIN=100dBµ, 400Hz, 100% mod. S/N S/N VIN=100dBµ Total harmonic distortion THD VIN=100%dBµ, 400Hz, 100% mod. Signal meter output VSM 1 No input VSM 2 VIN=100dBµ LED lighting sensitivity LED-on ILED=1mA 35 LED lighting bandwidth LED-BW VIN=100dB, ILED=1mA 90 AM rejection ratio AMR VIN=100dBµ, FM=400Hz 45 60 S/N Total harmonic distortion Signal meter output 18 26 mA 50 90 mV 160 220 mV 15 24 33 dBµ 220 275 330 mV 20 28 mA 31 37 dBµ 330 460 mV [FM : f=10.7MHz] 240 78 84 dB 0.03 0.3 % 0 0 0.2 V 1.5 2.7 3.1 V 50 65 dBµ 120 160 kHz dB 100% mod. AM=1kHz 30% mod. Allowable power dissipation, Pd max – mW Note : Be fully careful of dielectric breakdown. Ambient temperature, Ta – °C No.2012-2/14 LA1267 Equivalent Circuit Block Diagram How to use the LA1267 LED Lighting Bandwidth – Resistance across pins 9 and 22 LED lighting bandwidth – kHz 1. LED lighting, muting drive output, stop signal (SD). • For LED lighting, muting drive output, stop signal, the output at pin 8 is used. • The 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 CF (BFU450CN) at pin 11. If a capacitor is connected in place of the CF, the bandwidth will get wider. – For FM, the bandwidth depends on the resistance across pins 9 and 22. If the resistance is increased, the bandwidth will get narrower. R=15kΩ makes the bandwidth approximately Resistance across pins 9 and 22 – kΩ 120kHz. • Sensitivity adjustment of LED, muting, stop signal. – For FM, the semifixed variable resistor across pin 15 and GND is used. – For AM, the semifixed variable resistor across pins 15 and 16 is used. Be sure to start adjustment for FM, and then make adjustment for AM. For the stop signal sensitivity and FM stop signal bandwidth, the variations should be considered and it is recommended to use the semifixed variable resistor for adjustment. • LED lighting sensitivity setting for AM. For the LED lighting sensitivity setting for AM, it is desirable that the IC input be 30dBµ (antenna input : approximately 50dB/m). In this case, the value of VR1 is 30kΩ. No.2012-3/14 LA1267 VR2 semifixed variable resistor value – kΩ • LED lighting sensitivity setting for FM. Semifixed Variable Resistor for FM For the LED lighting sensitivity setting for FM, the IC input LED lighting sensitivity setting for FM may be 45dBµ to 60dBµ. With the variations in the front end considered, it is ideal that the IC input in a standard receiving set be 51dBµ to 54dBµ. The lower value of VR2 for the Ideal setting range LED lighting sensitivity setting is as illustrated right. Since the variations in the front end cause the IC input setting sensitivity to vary, it is recommended to use a value of VR2 at an input voltage lower than a standard setting by 6dB or greater. For example, if IC input 53dBµ is taken as a standard, use VR2≤100kΩ at IC input 47dBµ. 2. AM/FM changeover • Two selections are available for changeover as shown below IC input – dBµ : (A) pin 19-used method and (B) pin 20-used method. • For (A), the voltage on pin 19 relative to VCC (pin 7) must be within the range of –0.8V to +0.1V. If not within this range, distortion and selectivity will get worse. • For (A), a resistance of 68kΩ at the IFT cold terminal, which is used to prevent the changeover circuit from malfunctioning, must be connected. (A) pin 19-use method for AM/FM changeover (B) Pin 20-used method for AM/FM changeover 3. Local OSC buffer output • When local OSC buffer output wave form is saw-toothed at the SW mode, connect a resistance of 1.2kΩ or thereabouts across pin 24 and GND. 4. AM input pin • It is desirable that the AM input pin (pin 21) be L-coupled to pin 20. • Inputting to pin 21 can be done by DC-cutting with a capacitor. However, an unbalance in the RF amplifier (differential amplifier) causes gain drop and whistle worsening. V9 – Modulation Frequency 5. Capacitance across pin 9 and GND. A large capacitance across pin 9 and GND may cause a misstop at an adjacent channel when the channel select speed is made faster at the automatic channel select mode. In this case, decrease the capacitance across pin 9 and GND. However, if too decreased, the LED will flutter at low modulation frequencies at the time of detuning. Therefore, it is recommended to fix the capacitance across pin 9 and GND to be 3.3µF to 10µF. The relation between modulation frequency and demodulation output voltage on pin 9 with the capacitance across pin 9 and GND as a parameter is shown right. Modulation frequency – Hz No.2012-4/14 LA1267 6. If the coupling coefficient of the local OSC coil is small and an antiresonance point of approximately 100MHz is present or the stray capacitance across pins 24 and 23 is large, a parasitic oscillation of approximately 100MHz may occur in the buffer output (pin 24). In this case, connect a capacitance of approximately 30pF across pin 24 and GND. 7. AM OSC coil Generally speaking, the following should be noted. Avoid winding with loose coupling between primary side and secondary side (especially SW1, SW2). To put it concretely, the pot core type is better than the screw core type which is loose in coupling. This prevents the local OSC frequency from turning third resonance frequency related to the coupling coefficient. 8. Resistance across pin 8 and VDD. If pin 8 is used for the stop signal (SD) only, without using LED, it is recommended to fix resistance RL across pin 8 and GND to be 51kΩ to 100kΩ. 9. To prevent whistle from worsening, make the pattern of AM output pin 14 as short as possible. Input/Output Admittance FM – IF Parameter Frequency γi1 10.7MHz – ri ci Parameter Frequency – Admittance 330 20 Unit Ω pF AM – RF γi21 1MHz MIX γo19 500kHz IF γi17 500kHz ri ci ro co ri co Admittance AGC-off (V16=1.4V) AGC-on (V16=2.5V) 15 16 4 4 – – 3 3 2 2 10 8 Unit kΩ pF kΩ pF kΩ pF Test Circuit : FM, AM-MW T1 : 4147-1457-177 (Sumida) T2 : HW-40174 (Mitsumi) T3 : HW-40130, 40131 (Mitsumi) Unit (resistance : Ω, capacitance : F) No.2012-5/14 LA1267 AM ou tpu t Noise voltage Total harmonic distortion, THD – % Detection output IF input voltage – dBµ IF input voltage – dBµ FM Signal Meter Current Characteristic FM Signal Meter Voltage Characteristic IF input voltage – dBµ 1MHz reception Mod. 400Hz, 30% AM Signal Meter Current Characteristic Total harmonic distortion, THD – % Signal meter current, ISM – mA tput ise ge No olta v Noise voltage, Detection output – dBm IF input voltage – dBµ MW Input/Output Characteristics on ou Detecti Non-modulation See test circuit. Antenna input voltage – dBm MW Fidelity Characteristics Antenna input voltage – dBm AM Signal Meter Voltage Characteristic Non-modulation See test circuit. Attenuation Attenuation – dB Signal meter voltage, VSM – V Non-modulation See test circuit. 1MHz reception input Distortion Antenna input voltage – dBm Total harmonic distortion, THD – % Non-modulation See test circuit. Signal meter voltage, VSM – V Signal meter current, ISM – mA Detection output, Noise voltage – dBm FM Input/Output Characteristics Modulation frequency – Hz No.2012-6/14 LA1267 Selectivity Characteristic Output 25mV const. Tracking adjust at each frequency IF interference ce e en ag fer Im ter in Attenuation – dB Sensitivity – dB/m Interference – dB MW Reception Characteristic Usable sensitivity (400Hz-30% mod., S/N=20dB) Max. sen sitivity (400Hz-30% mod., detection output 20mV) Frequency deviation, ∆f – kHz Spurious Characteristic Receiving frequency, fr – kHz MW Detuning Characteristic Detection output – dBm Response – dB Reception : 1kHz Local OSC buffer output, VOSC – mV Frequency, f – Hz Supply voltage, VCC – V Receiving frequency, fr – kHz FM Current Drain Characteristic AM Current Drain Characteristic ICC (including no LED current) IF input voltage – dBµ Current drain, ICC – mA Current drain, ICC – mA Local OSC buffer output, VOSC – mV Frequency deviation, ∆f – Hz (including no LED current) Antenna input voltage – dBm No.2012-7/14 AM Temperature Characteristics Total harmonic distortion, THD – % Bandwidth, LED-BW – kHz Noise voltage, VN – dBm Detection output – dBm Total harmonic Sensitivity – dBµ distortion,THD – % input S meter voltage, VSM – V input input input no input Sensitivity – dBµ LED lighting sensitivity –3dB limiting sensitivity input input input Detection output input input input S meter voltage, VSM – V Detection output – dBm FM Temperature Characteristics Detection output Input no input LED lighting sensitivity S/N=20dB sensitivity 400Hz-100% mod. Output 20mV sensitivity Ambient temperature, Ta – °C Ambient temperature, Ta – °C FM VCC Characteristics Detection output (Input=100dBµ) ,I C t drain C nal No sig Curren µ Input=100dB S meter voltage Input=50dBµ Input=0dBµ S meter voltage, VSM – V ivity LED lighting sensit Current drain, ICC – mA Detection output – dBm –3dB limiting sensitivity Sensitivity – dBµ Noise voltage, VN – dBm LA1267 Supply voltage, VCC – V No.2012-8/14 LA1267 AM VCC Characteristics , I CC in nt dra Curre nal No sig LED lighting sensitivity Input=100dB/m S meter voltage Input=50dB/m Input=0dB/m S meter voltage, VSM – V Output 20V sensitivity Current drain, ICC – mA Detection output – dB Sensitivity – dBm Detection output (Input=100dBµ) Supply voltage, VCC – V Test Circuit : SW2 Dummy T1 : 4147-1457-177 (Sumida) T2 : HW-40174 (Mitsumi) T3 : HW-40130, 40131 (Mitsumi) Unit (resistance : Ω, capacitance : F) No.2012-9/14 LA1267 Detection output Total harmonic distortion, THD – % Total harmonic distortion, THD – % No vol ise tag e Noise voltage, Detection output – dBm Detection output SW2 Input/Output Characteristics tput Detection ou N vo oise lta ge IEC input voltage – dBµ IEC input voltage – dBµ SW2 Input/Output Characteristics 8.5MHz Spurious Characteristics Image frequency Receiving frequency N vo ois lta e ge Referenced to output –20dBm Spurious – dB Detection output Total harmonic distortion, THD – % Noise voltage, Detection output – dBm Noise voltage, Detection output – dBm SW2 Input/Output Characteristics Frequency, f – MHz IEC input voltage – dBµ y S/N=20dB sen Imag sitiv e ity ivity n sensit Max.t at detectio u Inp ut 20mV outp Receiving frequency, fr – MHz Image frequency Usab sensitle ivit Receiving frequency Referenced to output –20dBm Spurious – dB Image interference – dB Sensitivity – dBµ 8.5 to 9.4MHz Spurious Characteristics Receiving frequency, fr – MHz No.2012-10/14 LA1267 Coil Specifications MW antenna Bar antenna (for PVC22KTL) • TN-10896 (Mitsumi) Tight solenoid direct winding 17T 0.5φ space winding 4T tight solenoid winding Loop antenna (for SVC321) • LA300 (Korin Giken) Loop antenna matching coil • KT-412 MW OSC • 4147-1457-177 (Sumida) For PVC22KTL • KO-387 (Korin Giken) For SVC321 AM-IFT Matching coil for SFU450B (1-element type) (Sumida) (Mitsumi) Internal 180pF Internal 180pF Matching coil for SFZ450B (2-element type) (Sumida) (Mitsumi) Internal 180pF Internal 180pF FM single tuning detection coil (Mitsumi) Internal 82pF±10% Damping resistance (Sumida) Internal 82pF±10% Damping resistance No.2012-11/14 LA1267 FM double tuning detection coil (Mitsumi) (Mitsumi) Internal 100pF±10% Internal 100pF±10% (Sumida) Internal 62pF±10% (Sumida) Internal 82pF±10% Unit (resistance : Ω) No.2012-12/14 B.P. F SNY-2101 (Sumida) T1 : YT-30224 (Mitsumi) T2 : KL412 (Korin) T3 : KO387 (Korin) T4 : HW-40174 (Mitsumi), 2150-2061-049 (Sumida) T5a : HW-40130 (Mitsumi), 2231-077 (Sumida) T5b : HW-40131 (Mitsumi), 2231-078 (Sumida) L1 : YT-30196 (Mitsumi), 0708-700 (Sumida) L2 : HW50433 (Mitsumi), 0267-034 (Sumida) Unit (resistance : Ω, capacitance : F) LA1267 Sample Application Circuit : LA1186N + LA1265 (US Band) No.2012-13/14 Noise voltage, AM output, Detection output – dBm Total harmonic distortion, THD – % LA1186N+LA1267 Overall Characteristics Detection output (75k dev) Signal meter AM ut outp ) 0% z-3 Noise voltage H (1k ) ut (30% on outp Detecti Signal meter ise ge lta vo Noise voltage, AM output, Detection output – dBm LA1186N+LA1267 Overall Characteristics No Total harmonic distortion, THD – % Input – dBµ Signal meter – V Signal meter – V LA1267 Input – dB/m No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or indirectly cause injury, death or property loss. Anyone purchasing any products described or contained herein for an above-mentioned use shall: Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all damages, cost and expenses associated with such use: Not impose any responsibilty for any fault or negligence which may be cited in any such claim or litigation on SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees jointly or severally. Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of November, 1997. Specifications and information herein are subject to change without notice. No.2012-14/14