YD9088

www.DataSheet4U.com YOUDA INTEGRATED CIRCUIT YD9088 FM RECEIVER CIRCUIT FOR BATTERY SUPPLY —YD9088 DESCRIPTION The YD9088 is a bipolar integrated circuit for use in mono portable and pocket radios. It is used when a minimum of peripheral components (of small dimensions and low costs) is important. The circuit contains a frequency-locked-loop (FLL) system with an intermediate Frequency (IF) of about 70kHz. Selectivity is achieved by active RC-filters. De-tuning related to the IF and too weak input signals is suppressed by the mute circuit. FEATURES *Equipped with all stages of a mono receiver form antenna to audio output *Mute circuit *Search tuning with a single varicap diode *Mechanical tuning with integrating AFC *AM application supported *Power supply polarity protection *Power supply voltage down to 1.8V WuXi YouDa Electronics Co., Ltd Add: No.5 Xijin Road, National Hi-Tech Industrial Development Zone, Wuxi Jiangsu China Tel: 86-510-85205117 86-510-85205106 Fax: 86-510-85205110 Website: www.e-youda.com SHENZHEN OFFICE Tel： 86-755-83740369 Fax： 86-755-83741418 Ver 5.0 1 of 4 2006-7-10 DataSheet 4 U .com www.DataSheet4U.com YOUDA INTEGRATED CIRCUIT BLOCK DIAGRAM YD9088 6 7 8 9 6kΩ 10 13 11 V1 MIXER 2.2kΩ 2.2kΩ +1 IF LIMTER ∫ 15 5.4kΩ ALLPASS FILTER × DEMODULATOR 6KΩ LOOP FILTER 3 5kΩ Vp 12 5 VCO 4 V2 AF -1 ∫ + V2 V2 14 SEARCH TUNING × & 16 + R S V3 AF MUTE 1 2 ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL (Tamb=25℃) VALUE UNIT Supply voltage O...