TDA7515 RF-FRONTEND FOR AM/FM-DSP-CARRADIOS WITH IF SAMPLING PRODUCT PREVIEW ■ ■ ■ ■ ■ 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: ■ ■ ■ High performance fast PLL for RDS-system Electronic alignment for the preselection stages All functions bus-controlled DESCRIPTION The frontend is a high performance tuner circuit for 1 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. BLOCK DIAGRAM optional 2 AGC 2 2 ADJ IF 10.7MHz 2 FM AGC DAGC Q I PM Bus Interface AGC TV1 2 TV2 2 Supply AM PM 1/4 1/8 DIV 1/6 1/10 :1/:2/:3 PLL REFDIV VCO LPOUT 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 SDA Fref- IFAMAGCTC Fref+ Vref DAGC IFGND IFOUT2 IFOUT1 VCCIF PIN CONNECTION IFAGCTC 2 33 32 31 30 29 28 27 26 25 24 23 VCC 34 22 SCL IFINAM 35 21 GNDPLL GND 36 20 LPHC IFIN1 37 19 LPFM IFIN2 38 18 LPREF MIXOUT1 39 17 LPOUT MIXOUT2 40 16 LPAM/SW GNDVCO 3 2 3 4 5 6 7 8 9 10 11 VCCVCO 00AT0036 1 TV2 12 TV1 44 FMAGCTC VCOB AMIN1 FMIN2 13 FMIN1 43 RFGND VCOE AMIN2 FMPINDR VPLL 14 AMPINDR 15 42 AMRFAGCout 41 AMRFAGCin AMAGCTC FMIFAGCin PIN DESCRIPTION Pin No. 2/5 Pin Name Function 1 AMRFAGCin 2 AMRFAGCout AM AGC Input for RF detection 3 AMPINDR AM AGC PIN-diode driver 4 FMPINDR FM AGC Pindiode driver 5 FMIN1 6 RFGND 7 FMIN2 8 FMAGCTC FM AGC time constant 9 TV1 Tuning voltage 1 output 10 TV2 Tuning voltage 2 output 11 VCCVCO Supply Voltage VCO 12 GNDVCO VCO Ground 13 VCOB Base VCO 14 VCOE Emitter VCO 15 VPLL PLL Supply Voltage 16 LPAM/SW 17 LPOUT OPAMP output to PLL Loop Filter 18 LPREF Voltage Reference for PLL 19 LPFM OP AMP Input to PLL Loop Filter FM 20 LPHC High Current PLL Loop Filter AM AGC output for RF AGC FM Mixer Input 1 RF Ground FM Mixer Input 2 OP AMP Input to PLL Loop Filter AM / switch output (optional) TDA7515 3 4 PIN DESCRIPTION (continued) Pin No. Pin Name 21 GNDPLL Function 22 SCL Bus connection (IIC clock) 23 SDA Bus connection (IIC data) 24 IFAMAGCTC PLL Ground Time constant for AM IF AGC 25 Fref- Reference frequency input 26 Fref+ Reference frequency input 27 Vref Reference voltage 5V 28 DAGC Digital keying AGC input 29 IFGND IF Ground 30 IFOUT2 IF amplifier output 31 IFOUT1 IF amplifier output 32 VCCIF 33 IFAGCTC 34 VCC 35 IFINAM Supply voltage for IF output IF AGC time constant Supply voltage IF input for narrowband AM 36 GND Ground 37 IFIN1 IF Input - signal 38 IFIN2 IF Input - blocked 39 MIXOUT1 Mixer Output 40 MIXOUT2 Mixer Output 41 AMAGCTC AM AGC time constant 42 FMIFAGCin IF input for FM AGC 43 AMIN2 AM RF Input 44 AMIN1 AM RF Input THERMAL DATA Symbol Rth(j-a) 5 Parameter Values Min. Typ. Thermal resistance Max. 85 Unit °C/W Tamb Ambient temperature -40 85 °C Tstg Storage temperature -55 150 °C ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit VCCIF Supply voltage for IF-interface 12 V VPLL PLL supply voltage 12 V VCCVCO VCO supply voltage 12 V Supply voltage 12 V Open collector voltage 12 V VCC VMIXOUT1/2 3/5 TDA7515 mm DIM. MIN. TYP. A inch MAX. MIN. TYP. 1.60 A1 0.05 A2 1.35 B 0.30 C 0.09 0.063 0.15 0.002 0.006 1.40 1.45 0.053 0.055 0.057 0.37 0.45 0.012 0.014 0.018 0.20 0.004 0.008 D 12.00 0.472 D1 10.00 0.394 D3 8.00 0.315 e 0.80 0.031 E 12.00 0.472 E1 10.00 0.394 E3 8.00 0.315 L 0.45 0.60 0.75 OUTLINE AND MECHANICAL DATA MAX. 0.018 0.024 L1 1.00 K 0°(min.), 3.5˚(typ.), 7°(max.) 0.030 0.039 TQFP44 (10 x 10) D D1 A A2 A1 33 23 34 22 0.10mm .004 B E B E1 Seating Plane 12 44 11 1 C L e K TQFP4410 4/5 TDA7515 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. 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