TDA7515 RF front-end for AM/FM-DSP car radios with IF sampling Features ■ 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 ■ High performance fast PLL for RDS-system ■ Electronic alignment for the preselection stages ■ All functions bus-controlled LQFP44 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 front-end is a high performance tuner circuit for AM/FM - DSP car radios with 10.7MHz - IF sampling. Order codes Part numbers Package Packing TDA7515 LQFP44 (10x 10x 1.4mm) Tray TDA7515TR LQFP44 (10x 10x 1.4mm) Tape and reel November 2006 Rev 2 1/7 www.st.com 7 Block diagram and pin description 1 TDA7515 Block diagram and pin description Figure 1. Block diagram optional 2 AGC 2 2 ADJ IF 10.7MHz 2 FM AGC Bus Interface AGC TV1 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 SDA Fref- IFAMAGCTC Fref+ Vref DAGC IFGND IFOUT2 IFOUT1 VCCIF Pin connection IFAGCTC Figure 2. 33 32 31 30 29 28 27 26 25 24 23 2/7 VCC 34 22 SCL IFINAM 35 21 GNDPLL LPOUT MIXOUT2 40 16 LPAM/SW AMAGCTC 41 15 VPLL FMIFAGCin 42 14 VCOE AMIN2 43 13 VCOB AMIN1 44 12 GNDVCO 2 3 4 5 6 7 8 9 10 11 VCCVCO 1 TV2 17 TV1 39 FMAGCTC LPREF MIXOUT1 FMIN2 18 RFGND 38 FMIN1 LPFM IFIN2 FMPINDR LPHC 19 AMPINDR 20 37 AMRFAGCin 36 AMRFAGCout GND IFIN1 00AT0036 DAGC Q I PM 2 TDA7515 Block diagram and pin description Table 1. Pin No. Pin description Pin Name Function 1 AMRFAGCin 2 AMRFAGCout AM AGC output for RF AGC AM AGC input for RF detection 3 AMPINDR AM AGC pin-diode driver 4 FMPINDR 5 FMIN1 FM mixer input 1 6 RFGND RF ground 7 FMIN2 8 FMAGCTC 9 TV1 Tuning voltage 1 output 10 TV2 Tuning voltage 2 output FM AGC pin-diode driver FM mixer input 2 FM AGC time constant 11 VCCVCO Supply voltage VCO 12 GNDVCO VCO ground 13 VCOB 14 VCOE Emitter VCO 15 VPLL PLL supply voltage Base VCO 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 21 GNDPLL 22 SCL Bus connection (IIC clock) 23 SDA Bus connection (IIC data) 24 IFAMAGCTC 25 Fref- 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 Supply voltage for IF output 33 IFAGCTC 34 VCC 35 IFINAM OP AMP input to PLL loop filter AM / switch output (optional) PLL ground Time constant for AM IF AGC Reference frequency input 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 43 AMIN2 AM RF input 44 AMIN1 AM RF input IF input for FM AGC 3/7 Electrical specifications TDA7515 2 Electrical specifications 2.1 Thermal data Table 2. Thermal data Values Symbol Parameter Unit Min. Rth(j-a) 2.2 Thermal resistance Max. 85 °C/W Tamb Ambient temperature -40 85 °C Tstg Storage temperature -55 150 °C Absolute maximum ratings Table 3. 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 12 V VCC VMIXOUT1/2 Open collector voltage 4/7 Typ. TDA7515 3 Package information Package information In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a lead-free second level interconnect. The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com. Figure 3. LQFP44 (10x10) Mechanical data & package dimensions mm inch DIM. MIN. TYP. A MAX. MIN. TYP. 1.60 0.05 A2 1.35 1.40 1.45 0.053 0.055 B 0.30 0.37 0.45 0.012 0.015 C 0.09 0.20 0.004 D 11.80 12.00 12.20 0.464 D1 9.80 10.00 10.20 0.386 0.002 8.00 0.006 11.80 12.00 12.20 0.464 E1 9.80 10.00 0.472 0.480 0.394 0.401 10.20 0.386 0.472 0.480 0.394 0.401 8.00 0.315 e 0.80 0.031 k ccc 0.45 0.60 0.018 0.008 E3 L 0.057 0.315 E L1 OUTLINE AND MECHANICAL DATA 0.063 A1 D3 0.15 MAX. 0.75 1.00 0.018 0.024 0.030 0.039 LQFP44 (10 x 10 x 1.4mm) 0˚(min.), 3.5˚(typ.), 7˚(max.) 0.10 0.0039 0076922 E 5/7 Revision history 4 TDA7515 Revision history Table 4. 6/7 Document revision history Date Revision Changes 24-Jan-2006 1 Initial release. 24-Nov-2006 2 Package changed, layout changes, text modification. TDA7515 Please Read Carefully: Information in this document is provided solely in connection with ST products. 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