ULA1145

UNISONIC TECHNOLOGIES CO., LTD ULA1145 Preliminary FM TUNER IF SYSTEM  DESCRIPTION The UTC ULA1145 is a high integrated IC for FM tuner IF stage, special in car radio.  FEATURES * Built-in IF count buffer circuit and microprocessor-controlled switch circuit for ETR * High S/N * Wide range output * More simplifies design: - Built-in SD circuit—regulable sensitivity independently of soft mute characteristics - Variable S-meter gradient—output with three pins  ORDERING INFORMATION Ordering Number ULA1145G-N20-R Package HTSSOP-20 CMOS IC Packing Tape Reel  MARKING www.unisonic.com.tw Copyright © 2015 Unisonic Technologies Co., Ltd 1 of 10 QW-R106-006.a ULA1145  PIN CONFIGURATION Preliminary NC 1 2 3 4 5 6 7 8 9 10 20 NC 19 18 17 16 15 14 13 12 11  PIN DESCRIPTION PIN NO. 1, 20 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 PIN NAME NC IFIN IFBIAS IFGND Msc MGC MAC AFOUT AFCOUT IFOUT QIN VREG VCC IFCT GND MDRI SOUT SDCT SDOUT IF input IF amp bias IF amp GND Mute start control Mute gradient control Mute attenuation control AF output AFC output IF output Quadrature detection input Voltage regulator output VCC IF count output, control GND for detection circuit Mute driver S-meter output SD sensitivity control SD output DESCRIPTION CMOS IC UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 10 QW-R106-006.a ULA1145  PIN FUNCTIONS PIN NO. Function 2 IF input Preliminary Internal Equivalent Circuit 2 CMOS IC Notes 3 Bias pin 4 GND 5 Soft mute ...