Ordering number : EN2257B Monolithic Linear IC LA1177 Electronic Tuning-Use FM Front End for Car Radio, Home Stereos Overview Package Dimensions • The LA1177 is an FM front end IC for use in car radio, home stereo applications. It requires fewer external parts. The on-chip oscillator and oscillation buffer facilitate designing of electronic tuning sets. unit: mm 3017C-SIP9 [LA1177] Features • Wide-band AGC circuit (Improvement in intermodulation, cross modulation characteristics). • On-chip local oscillation buffer (For electronic tuning). Functions • Oscillator, oscillation buffer. • Mixer. • Wide-band AGC circuit. • IF amplifier. SANYO: SIP9 Specifications Maximum Ratings at Ta=25°C Parameter Symbol Conditions Maximum supply voltage VCC max Pins 2, 9 Ta≤70°C Ratings Unit 10 V 440 mW Allowable power dissipation Pd max Operating temperature Topr –20 to +70 °C Storage temperature Tstg –40 to +125 °C Operating Conditions at Ta=25°C Parameter Symbol Recommended supply voltage VCC Operating voltage range VCC op Conditions Ratings Unit 8 V 8 to 9 V Electrical Characteristics at Ta=25°C, VCC=8V, fin=88MHz Parameter Symbol Conditions Ratings min typ max 31 Quiescent current ICCO No input 21 26 AGC high-level voltage VAGC-H VIN=0dBµ 7.7 8.0 AGC low-level voltage VAGC-L VIN=100dBµ AGC mixer input voltage Vi AGC VAGC≤2V, Pin 3 IF saturation output voltage VIF-max VIN=1.0dBµ Input limiting voltage Vi lim Voltage gain VG Local OSC output voltage VOSC Unit mA V 0.07 0.3 V 73 80 87 dBµ 108 112 116 dBµ 76 83 90 dBµ VIN=65dBµ 88 92 96 dBµ No input, 75Ω termination 80 84 88 dBµ SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN 93097HA (KT)/3079TA/1268KI/8016KI, TS No.2257-1/8 LA1177 Evaluation Circuit and Internal Equivalent Circuit Block Diagram Unit (resistance : Ω, capacitance : F) T1 : YT30224 (Mitsumi) L1 : HU-50448 (Mitsumi) CF1-CF2 : SFE10.7MA (Murata) Typical Voltage on Each Pin Pin No. 1 2 3 4 5 6 7 8 9 Typical voltage 2.7V 8.0V 8.0V 2.0V 0V 4.9V 1.4V 4.4V 8.0V Description Mixer input Mixer output AGC input IF input GND Oscillator base terminal Oscillation buffer output IF output VCC Remarks No input Note : Extreme caution should be exercised when applying voltage across pin 9 (+) and other pins as dielectric breakdown may occur. No.2257-2/8 LA1177 Sample Application Circuit Unit (resistance : Ω, capacitance : F) Sample Printed Circuit Pattern Cu-foiled area 85×82 mm2 Unit (resistance : Ω, capacitance : F) No.2257-3/8 LA1177 Mixer Input/Output Characteristic Mixer output level – dBµ AGC output voltage – V IF amp output level – dBµ Input/Output Characteristic Mixer input level – dBµ Load Delay Characteristic of OSC Puffer Mixer input level – dBµ OSC buffer output level – mVrms Mixer input level – dBµ AGC Detuning Characteristic Load capacitance – pF Load Resistance Characteristic of OSC Buffer Reduced Voltage Characteristic of OSC Frequency OSC frequency variation – kHz OSC buffer output level – mVrms Detuning frequency – MHz Load resistance, RL – Ω Supply voltage, VCC – V IF Amp Frequency Characteristic Voltage gain, VG – dB OSC buffer output level – mVrms Reduced Voltage Characteristic of OSC Frequency Supply voltage, VCC – V Frequency, f – kHz No.2257-4/8 LA1177 Current Drain Characteristic Current drain, ICC – mA IF amp output level – dBµ IF Amp Input/Output Characteristic Supply voltage, VCC – V Temperature Characteristic of Mixer Input/Output Mixer input level – dBµ Relative level deviation of IF amp output – dB AGC output voltage – V Mixer output level – dBµ Mixer input level – dBµ Mixer Input/Output Characteristic with Temperature as Parameter Ambient temperature, Ta – °C Input/Output Characteristic of Mixer Input/Output Relative level deviation of Mixer output – dB IF amp output level – dBµ Mixer input level – dBµ Input/Output Characteristic with Temperature as Parameter Ambient temperature, Ta – °C Relative level deviation of IF amp output – dB Total harmonic distortion, THD – % Demodulation output level – dBm IF amp input level – dBµ Input/Output Characteristic Temperature Characteristic of IF Amp Input/Output Ambient temperature, Ta – °C No.2257-5/8 LA1177 Temperature Characteristic of Mixer Input level at which AGC Voltage is Inverted IF amp output level – dBµ Mixer input level at which AGC voltage is inverted – dBµ IF Amp Input/Output Characteristic with Temperature as Parameter Ambient temperature, Ta – °C IF amp input level – dBµ Temperature Characteristic of VAGC-L Voltage VAGC-L voltage – V VAGC-H voltage – V Temperature Characteristic of VAGC-H Voltage Ambient temperature, Ta – °C Temperature Characteristic of OSC Buffer Output OSC frequency variation – kHz OSC buffer output variation – dB Ambient temperature, Ta – °C Temperature Characteristic of OSC Frequency Ambient temperature, Ta – °C Ambient temperature, Ta – °C OSC Frequency Characteristic OSC level – dBµ Mixer input 30dB QS sensitivity – dBµ Reception Sensitivity Characteristic OSC frequency – MHz Receiving frequency – MHz No.2257-6/8 LA1177 Intermodulation Characteristic AGC output voltage – V 30dB QS sensitivity – dBµ AGC Characteristic Undesired signal input level – dBµ Input/Output Characteristic Demodulation level – dBm AGC voltage, VAGC – V Demodulation level – dBµ Mixer input level – dBµ Input/Output Characteristic Mixer Input level – dBµ Intermodulation Characteristic (3SK114) 30dB QS sensitivity – dBµ 30dB QS sensitivity – dBµ Antenna Input level – dBµ Intermodulation Characteristic (Mixer alone) Undesired signal input level – dBµ 30dB QS sensitivity – dBµ Undesired signal input level – dBµ Intermodulation Characteristic (3SK181) Undesired signal input level – dBµ No.2257-7/8 LA1177 Intermodulation Characteristic (Comparison) - (2) 30dB QS sensitivity – dBµ 30dB QS sensitivity – dBµ Intermodulation Characteristic (Comparison) - (1) Undesired signal input level – dBµ Undesired signal input level – dBµ 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 lose. 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 September, 1997. Specifications and information herein are subject to change without notice. No.2257-8/8