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| 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 YOUDA INTEGRATED CIRCUIT BLOCK DIAGRAM YD9088 6 7 8 9 6k 10 13 11 V1 MIXER 2.2k 2.2k +1 IF LIMTER 15 5.4k ALLPASS FILTER x DEMODULATOR 6K LOOP FILTER 3 5k Vp 12 5 VCO 4 V2 AF -1 + V2 V2 14 SEARCH TUNING x & 16 + R S V3 AF MUTE 1 2 ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL (Tamb=25) VALUE UNIT Supply voltage Operating temperature Storage temperature Vcc Topr Tstg 5 -10+70 -55+150 V WuXi YouDa Electronics Co., Ltd 2 of 4 Website: www.e-youda.com YOUDA INTEGRATED CIRCUIT ELECTRICAL CHARACTERISTICS DC CHARACTERISTICS PARAMETER Supply Voltage Supply Current DC Voltage On Pin1 DC Voltage On Pin3 DC Voltage On pin6 and Pin7 DC Voltage On Pin8 DC Voltage On Pin9, Pin10 and Pin13 DC Voltage On Pin11 and Pin12 DC Voltage On Pin15 AF Output Vurrent On Pin2 Oscillator Vurrent On Pin5 SYMBOL Vp Ip V1 V3 V6,7 V8 V9,10,13 V11,12 V15 I2 I5 MIN 1.8 4.2 2.50 2.64 2.38 1.60 2.42 0.91 2.06 45 275 TYP 3 5.2 2.55 2.69 2.44 1.67 2.47 0.94 2.12 60 375 YD9088 (Vcc=3V, Tamb=25, Unless otherwise specified) MAX 5 6.6 2.60 2.74 2.50 1.74 2.52 0.98 2.18 80 500 UNIT V mA V V V V V V V A A AC CHARACTERISTICS PARAMETER RF Sensitivity Iinput Voltage (RMS value) Signal Handing Signal Plus Noise-to-noiseRatio Signal Harmonic Distortion AM Rejection RippleRejection Audio Output Signal SYMBOL CONDITIONS VoAF=-3dB, VoAF=0dB at Vin=1mV Mute off Mute on 3 MIN 3 6 5 200 56 1 2.4 47 7 60 52 10 85 VP1.85 210 2.83 9.5 120 1.4 3.3 TYP MAX 6 V 12 10 V mV dB % % dB dB mV UNIT Vi(rms) (S+N)/N=26dB f=75kHz, THD<10% (S+N)/N THD AMR RR1000 Vo f=22.5kHz f=75kHz FM:1kHz, 75kHz AM:1kHz, m=0.8 100mV RMS ripple on Vp, f=1kHz RL=22k 100 52 Search Tuning (with BB910 and C16=0.1F) Minimum Output Limiting point V16 Voltage On Pin16 Tuning Steepness Voltage at pin16 V/t Oscillator Steepness fosc/t AFC Steepness Voltage at pin3 IAFC/V3 V 420 5.6 19 mV/s MHZ/S S 95 1.25 4.75 WuXi YouDa Electronics Co., Ltd 3 of 4 Website: www.e-youda.com YOUDA INTEGRATED CIRCUIT APPLICATION CIRCUIT YD9088 OUTLINE DRAWING WuXi YouDa Electronics Co., Ltd 4 of 4 Website: www.e-youda.com |
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