SA1140 Datasheet | SL

DESCRIPTION The SA1140 is an IF system IC designed for FM car stereo receivers. It features versatile muting characteristics which can be varied with external parts. FEATURES .. - Muting characteristics a) Muting operation is performed under weak signal strength. b) Maximum muting attenuation can be selected to be approximately 6 to 40 d B. c) Input signal strength level which actuates the muting circuit can be set freely. - High limiting sensitivity - High S/N (78 d B typ.) - Good AMR - Signal meter drive output proportional to the input signal strength in d B (suitable to control multiplex IC SA3370). Device SA1140 Package ZIP-16 ZIP-16 ORDERING INFORMATION APPLICATIONS - FM car stereo receivers, FM home radio BLOCK DIAGRAM HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http: .silan..cn REV:1.0 2004.10.27 Page 1 of 6 ABSOLUTE MAXIMUM RATING (Tamb=25°C) Characteristics Maximum Supply Voltage Maximum Supply Current Allowable Power Dissipation Input Voltage .. Symbol VCC max ICC max Pd max VIN I2 I3 I6 I5 I13 Rating 16 40 640 460 ±1 ±0.2 ±0.2 2 1 2 2 1 1 -20 to +70 -40 to +125 Unit V m A m W m W Vp-p m A m A m A m A m A m A m A m A °C °C Flow-In Current Flow-Out Current I14 I15 I16 Operating Temperature Storage Temperature Topr Tstg ELECTRICAL CHARACTERISTICS (Tamb=25°C, VCC=8V, f=10.7MHz, see specified test circuit) Characteristics Remended Supply Voltage Operating Supply Voltage Range Quiescent Current Current Drain Demodulation Output Total Harmonic Distortion Signal-To-Noise Ratio Input Limiting Voltage Muting Sensitivity Muting Attenuation (1) Muting Attenuation (2) Muting Bandwidth Symbol VCC VCCop ICCO ICC VO THD S/N VIN (lim) VIN=0 VIN = 100 d Bµ VIN = 100 d Bµ, 400 Hz 100% mod. VIN = 100 d Bµ, 400 Hz 100% mod. VIN = 100 d Bµ, 400 Hz 100% mod. VO: 3 d B down, 400 Hz 100% mod. 22 10 24 140 V6 = 2.0 V (22 kΩ), VIN = 100 d Bµ, 400 Hz 100% mod. V6 = 5.0 V (22 kΩ), VIN = 100 d Bµ, 400 Hz 100% mod. 72 7.5 15 20 200 21 25 260 0.05 78 25 26 15 28 210 29 32 20 32 370...