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TDA7515 Datasheet Rf-frontend

Manufacturer: STMicroelectronics

Overview: 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.

General 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 18 17 16 SCL GNDPLL LPHC LPFM LPREF LPOUT LPAM/SW VPLL VCOE VCOB GNDVCO 15 14 13 12 8 9 10 11 FMIN1 FMIN2 TV1 RFGND TV2 AMPINDR FMPINDR AMRFAGCin 00AT0036 3 PIN DESCRIPTION Pin No.

Key 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.

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