View LA1267_300460.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

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=25C, See specified Test Circuit.
Parameter Maximum supply voltage Flow-in current Flow-out current Allowable power dissipation Operating temperature Storage temperature Symbol VCC max I8 I22 I24 Pd max Topr Tstg Pin 8 Pin 22 Pin 24 Ta60C Conditions Pins 7, 8, 19 Ratings 16 20 1 2 650 -20 to +70 -40 to +125 Unit V mA mA mA mW C C
Operating Conditions at Ta=25C
Parameter Operating voltage range Symbol VCC op Conditions Ratings 8.5 6 to 14 Unit V V Recommended operating voltage VCC
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=25C, VCC=8.5V, See specified Test Circuit
Parameter [AM : f=1MHz] Quiescent current Detection output S/N Total harmonic distortion Signal meter output LED lighting sensitivity Local OSC buffer output [FM : f=10.7MHz] Quiescent current Input limiting sensitivity Demodulation output S/N Total harmonic distortion Signal meter output LED lighting sensitivity LED lighting bandwidth AM rejection ratio Icco -3dBL.S. VO S/N THD VSM 1 VSM 2 LED-on LED-BW AMR No input 3dB down, 400Hz, 100% mod. VIN=100dB, 400Hz, 100% mod. VIN=100dB VIN=100%dB, 400Hz, 100% mod. No input VIN=100dB ILED=1mA VIN=100dB, ILED=1mA VIN=100dB, FM=400Hz 100% mod. AM=1kHz 30% mod. 0 1.5 35 90 45 240 78 20 31 330 84 0.03 0 2.7 50 120 60 0.3 0.2 3.1 65 160 28 37 460 mA dB mV dB % V V dB kHz dB Icco VO1 VO2 S/N1 S/N2 THD1 THD2 VSM 1 VSM 2 VLED on VOSC No input VIN=20dB, 400Hz, 30% mod. VIN=80dB, 400Hz, 30% mod. VIN=20dB VIN=80dB VIN=80dB, 400Hz, 30% mod. VIN=107dB, 400Hz, 30% mod. No input VIN=80dB ILED=1mA fOSC=1.45MHz 0 2.4 15 220 30 110 16 49 18 50 160 20 54 0.3 0.5 0 2.8 24 275 1.0 2.0 0.2 3.1 33 330 26 90 220 mA mV mV dB dB % % V V dB mV Symbol Conditions min Ratings typ max Unit
Note : Be fully careful of dielectric breakdown.
Allowable power dissipation, Pd max - mW
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
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=15k makes the bandwidth approximately Resistance across pins 9 and 22 - k 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 30dB (antenna input : approximately 50dB/m). In this case, the value of VR1 is 30k.
LED lighting bandwidth - kHz
No.2012-3/14
LA1267
* 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 45dB to 60dB. With the variations in the front end considered, it is ideal that the IC input in a standard receiving set be 51dB to 54dB. 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 53dB is taken as a standard, use VR2100k at IC input 47dB. 2. AM/FM changeover * Two selections are available for changeover as shown below IC input - dB : (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 68k 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
VR2 semifixed variable resistor value - k
3. Local OSC buffer output * When local OSC buffer output wave form is saw-toothed at the SW mode, connect a resistance of 1.2k 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 3.3F to 10F. 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 51k to 100k. 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 i1 10.7MHz - ri ci Admittance 330 20 Unit pF
AM - RF MIX IF Parameter Frequency i21 o19 i17 1MHz 500kHz 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 k pF k pF k pF
Test Circuit : FM, AM-MW
T1 : 4147-1457-177 (Sumida) T2 : HW-40174 (Mitsumi) T3 : HW-40130, 40131 (Mitsumi)
Unit (resistance : , capacitance : F)
No.2012-5/14
LA1267
FM Input/Output Characteristics Detection output, Noise voltage - dBm Total harmonic distortion, THD - % Detection output
AM
ou
tpu
t
Noise voltage
IF input voltage - dB FM Signal Meter Current Characteristic Non-modulation See test circuit.
IF input voltage - dB FM Signal Meter Voltage Characteristic Non-modulation See test circuit.
Signal meter current, ISM - mA
Signal meter voltage, VSM - V
IF input voltage - dB MW Input/Output Characteristics Noise voltage, Detection output - dBm Total harmonic distortion, THD - % Signal meter current, ISM - mA
IF input voltage - dB AM Signal Meter Current Characteristic Non-modulation See test circuit.
on ou Detecti
tput
ise ge No olta v
1MHz reception Mod. 400Hz, 30% Antenna input voltage - dBm AM Signal Meter Voltage Characteristic Non-modulation See test circuit.
Antenna input voltage - dBm MW Fidelity Characteristics Attenuation 1MHz reception input Total harmonic distortion, THD - %
Signal meter voltage, VSM - V
Attenuation - dB
Distortion Antenna input voltage - dBm Modulation frequency - Hz
No.2012-6/14
LA1267
MW Reception Characteristic Sensitivity - dB/m Interference - dB Tracking adjust at each frequency IF interference Selectivity Characteristic Output 25mV const.
Usable sensitivity (400Hz-30% mod., S/N=20dB)
Max. sen
sitivity
(400Hz-30% mod., detection output 20mV)
Receiving frequency, fr - kHz MW Detuning Characteristic
Frequency deviation, f - kHz Spurious Characteristic Reception : 1kHz
Frequency deviation, f - Hz
Detection output - dBm
Response - dB
Frequency, f - Hz
Local OSC buffer output, VOSC - mV
Local OSC buffer output, VOSC - mV
Supply voltage, VCC - V FM Current Drain Characteristic
ICC (including no LED current)
Receiving frequency, fr - kHz AM Current Drain Characteristic
Current drain, ICC - mA
Current drain, ICC - mA
(including no LED current)
IF input voltage - dB
Antenna input voltage - dBm
Attenuation - dB
e en ag fer Im ter in
ce
No.2012-7/14
LA1267
Detection output - dBm Total harmonic distortion, THD - % Bandwidth, LED-BW - kHz Noise voltage, VN - dBm Detection output - dBm Total harmonic Sensitivity - dB distortion,THD - % FM Temperature Characteristics Detection output Input AM Temperature Characteristics
Noise voltage, VN - dBm
input
input
input
input
S meter voltage, VSM - V
input
Detection output input
input
input
no input
input
LED lighting sensitivity
Sensitivity - dB
no input
LED lighting sensitivity
S/N=20dB sensitivity 400Hz-100% mod.
Output 20mV sensitivity
-3dB limiting sensitivity
input
Ambient temperature, Ta - C FM VCC Characteristics Detection output (Input=100dB)
Curren ,I C t drain C nal No sig
Ambient temperature, Ta - C
-3dB limiting sensitivity Current drain, ICC - mA Detection output - dBm
Sensitivity - dB
LED lighting sensit
ivity
S meter voltage
Input=50dB
Input=0dB
Supply voltage, VCC - V
S meter voltage, VSM - V
Input=100dB
No.2012-8/14
S meter voltage, VSM - V
LA1267
AM VCC Characteristics
in nt dra Curre nal No sig , I CC
Detection output (Input=100dB)
Sensitivity - dBm
Output 20V sensitivity
LED lighting sensitivity
S meter voltage
Input=50dB/m
Input=0dB/m
Supply voltage, VCC - V
Test Circuit : SW2
Dummy
T1 : 4147-1457-177 (Sumida) T2 : HW-40174 (Mitsumi) T3 : HW-40130, 40131 (Mitsumi) Unit (resistance : , capacitance : F)
No.2012-9/14
S meter voltage, VSM - V
Input=100dB/m
Current drain, ICC - mA
Detection output - dB
LA1267
SW2 Input/Output Characteristics Noise voltage, Detection output - dBm Noise voltage, Detection output - dBm Total harmonic distortion, THD - % SW2 Input/Output Characteristics Total harmonic distortion, THD - % Image frequency Receiving frequency, fr - MHz
Detection output
Detection ou
tput
No vol ise tag e
N vo oise lta ge
Detection output IEC input voltage - dB SW2 Input/Output Characteristics
IEC input voltage - dB 8.5MHz Spurious Characteristics Total harmonic distortion, THD - % Referenced to output -20dBm
Noise voltage, Detection output - dBm
Detection output
Spurious - dB
Receiving frequency
N vo ois lta e ge
IEC input voltage - dB
Frequency, f - MHz 8.5 to 9.4MHz Spurious Characteristics
Image interference - dB Sensitivity - dB
Image frequency Referenced to output -20dBm
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
Receiving frequency
Spurious - dB
Usab sensitle ivit
No.2012-10/14
LA1267 Coil Specifications
MW antenna Bar antenna (for PVC22KTL) * TN-10896 (Mitsumi)
Tight solenoid direct winding 17T 0.5 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)
(Mitsumi) (Sumida)
Internal 180pF
Internal 180pF
Matching coil for SFZ450B (2-element type)
(Mitsumi) (Sumida)
Internal 180pF
Internal 180pF
FM single tuning detection coil
(Mitsumi) (Sumida)
Internal 82pF10% Damping resistance
Internal 82pF10% Damping resistance
No.2012-11/14
LA1267
FM double tuning detection coil
(Mitsumi)
(Mitsumi)
Internal 100pF10%
Internal 100pF10%
(Sumida)
(Sumida)
Internal 62pF10%
Internal 82pF10%
Unit (resistance : )
No.2012-12/14
LA1267
Sample Application Circuit : LA1186N + LA1265 (US Band)
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)
No.2012-13/14
Unit (resistance : , capacitance : F)
LA1267
Noise voltage, AM output, Detection output - dBm LA1186N+LA1267 Overall Characteristics Detection output (75k dev)
Total harmonic distortion, THD - %
Signal meter - V
Signal meter
ut
AM
outp
H (1k
) 0% z-3 Noise voltage
Input - dB Noise voltage, AM output, Detection output - dBm LA1186N+LA1267 Overall Characteristics
Total harmonic distortion, THD - %
Signal meter - V
Detecti
on outp
ut (30%
)
Signal meter
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 ise vo lta ge
No.2012-14/14

▲Up To Search▲

Price & Availability of LA1267

	To Download LA1267 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .