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File name:la1145.pdf
[preview LA1145]
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Mfg:Sanyo
Model:LA1145 🔎
Original:LA1145 🔎
Descr:LA1145 LA1145M FM IF system for car radio
Group:Electronics > Components > Integrated circuits
Uploaded:09-03-2004
User:plamensl
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File name la1145.pdf

Ordering number: EN 2725A Monolithic Linear IC LA1145, 1145M FM IF System (Quadrature Detector) for Car Radio Features 1. 2. On-chip IF count buffer circuit and microprocessorcontrolled switch circuit for ETR. Compared to the LA1140, the LA1145, 1145M offer: 1 Improved signal meter output linearity; 2 Improved band mute temperature stability; 3 Improved S/N ratio; 4 Improved sound quality at weak signal input when noise is present, and; 5 Improved AMR characteristics during weak signal input. Reduced parts' count simplifies design: 1 On-chip IF count buffer circuit; 2 On-chip SD circuit -- sensitivity can be set independently of soft mute characteristics, and; 3 Variable S-meter gradient -- three pin S-meter output (pins 5, 16 and 17) facilitates independent control of SNC and HCC. Package Dimensions unit : mm 3115-SIP18Z [LA1145] 3. SANYO : SIP18Z unit : mm 3036B-MFP20 [LA1145M] SANYO: MFP20 SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN 93097HS(II)/3132TS/2118TA No.2725-1/17 LA1145, 1145M Specifications [LA1145] Maximum Ratings at Ta = 25 °C Parameter Maximum supply voltage Maximum supply current Allowable power dissipation Operating temperature Storage temperature Symbol VCC max ICC max Pd max Topr Tstg Pin 12 Pin 12 Ta = 65 °C Ta = 70°C Conditions Ratings 14 45 630 590 ­20 to +70 ­40 to +150 Unit V mA mW mW °C °C Operating Conditions at Ta = 25 °C Parameter Recommended supply voltage Operating voltage range Symbol VCC VCC op Conditions Ratings 8 7.5 to 14 Unit V V Operating Characteristics at Ta = 25°C,VCC = 8 V, fin = 10.7 MHz Parameter Quiescent current Current drain Demodulation output Total harmonic distortion Signal-to-noise ratio Input limiting voltage Muting sensitivity Muting bandwidth Muting attenuation mute(2) V16-0 V16-50 V16-70 V16-100 V15-0 V15-100 AMR V7-11 V8-11 VSD VIN (IF) Symbol ICCO ICC VO THD S/N VIN (lim) VIN (mute) BW(mute) mute(1) Conditions 0 dBµ 100 dBµ 100 dBµ, 400 Hz tone, 100% 100 dBµ, 400 Hz tone, 100%, single tuning coil VIN = 100 dBµ, 400 Hz tone, 100% 400 Hz tone, 100%, soft mute ON V15 = 2 V VIN = 100 dBµ, V18 % 0.3 V VIN = 100 dBµ, V15 = 2 V, 400 Hz tone, 100% VIN = 100 dBµ, V15 = 4 V, 400Hz tone, 100% VIN = 0 dBµ, RA = 10 k, pin 16 VIN = 50 dBµ, RA = 10 k, pin 16 VIN = 70 dBµ, RA = 10 k, pin 16 VIN = 100 dBµ, RA = 10 k, pin 16 VIN = 0 dBµ, pin 15 VIN = 100 dBµ, pin 15 VIN = 100 dBµ, 1 kHz tone, 30% AM VIN = 0 dBµ, pins 7 to 11 VIN = 0 dBµ, pin 8 to 11 Pin 18 VIN = 100 dBµ, pin 13, CL = 10 pF VIN VIN VIN VIN = = = = min 18 20 300 typ 26 29 400 0.3 79 34 30 140 10 25 0 1.4 2.5 5.0 4.0 0 57 ­0.25 ­0.5 50 110 85 40 36 190 15 29 0.1 2.3 4.5 5.5 4.8 0 70 0 0 58 180 max Unit 36 mA 36 mA 520 mVrms 0.8 46 42 280 20 33 0.4 3.2 5.5 6.0 5.5 0.3 +0.25 +0.5 66 280 % dB dBµ dBµ kHz dB dB V V V V V dB dB V V dBµ mVrms Signal strength indication output Muting drive output AM rejection ratio Offset voltage SD sensitivity IF

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