TDA7515

TDA7515 RF-FRONTEND FOR AM/FM-DSP-CARRADIOS WITH IF SAMPLING PRODUCT PREVIEW s s s s s RF AGC generation by RF and IF detection I/Q Mixer for FM IF 10.7MHz with image rejection and programmable IF tank adjust for FM and AM Preamplifier and mixer for IF 10.7MHz AM upconversion VCO and programmable divider for “world receiver” Programmable controlled IF-gain stage TQFP44 ORDERING NUMBER: TDA7515 Additional features: s s s High performance fast PLL for RDS-system Electronic alignment for the preselection stages All functions bus-controlled AM/FM - DSP carradios with 10.7MHz - IF sampling. It contains mixer and IF amplifiers for AM and FM, VCO and PLL synthesizer on a single chip. Use of BICMOS technology allows the implementation of several tuning functions and a minimum of external components. DESCRIPTION The frontend is a high performance tuner circuit for 1 BLOCK DIAGRAM optional 2 2 AGC ADJ 2 IF 10.7MHz 2 FM PM AGC DAGC I Q 2 AGC TV1 2 AM PM Bus Interface TV2 Supply 1/4 1/8 DIV 1/6 1/10 :1/:2/:3 VCO LPOUT PLL REFDIV LPAM LPFM LPHC Fref 18/100kHz 00AT0037 July 2002 This is preliminary information on a new product now in development. Details are subject to change without notice. 1/5 TDA7515 2 PIN CONNECTION IFAMAGCTC IFAGCTC IFOUT1 IFOUT2 IFGND VCCIF DAGC Fref+ Fref- 33 32 31 30 29 28 27 26 25 24 23 VCC IFINAM GND IFIN1 IFIN2 MIXOUT1 MIXOUT2 AMAGCTC FMIFAGCin AMIN2 AMIN1 SDA Vref 34 35 36 37 38 39 40 41 42 43 44 1 2 3 4 5 6 7 22 21 20 19...