LC72725KVS

Ordering number : ENA1744 LC72725KVS Overview CMOS IC RDS(RBDS) Demodulation IC The LC72725KVS is ICs that implement the signal processing required by the European Broadcasting Union RDS (Radio Data System) standard and by the US NRSC (National Radio System Committee) RBDS (Radio Broadcast Data System) standard. These ICs include band-pass filter, demodulator,and data buffer on chip. RDS data can be read out from this on-chip memory by external clock input in slave operation mode. Functions • Bandpass filter • RDS Demodulation • Buffer • Data output • RDS-ID • Standby control • Fully adjustment free • Low Voltage : Switched capacitor filter (SCF) : 57KHz carrier and RDS data clock regeneration, biphase decode, differential decode. : 128 bit (about 100ms) can be restored in the on-chip data buffer. : Master or slave output mode can be selected. : Detect RDS signal which can be reset by RST signal input. : Crystal oscillator can be stopped. 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To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer' s products or equipment. 60910HKIM 20100427-S00009 No.A1744-1/9 LC72725KVS Specifications Absolute Maximum Ratings at Ta = 25°C, VSSd = VSSa = 0V Parameter Maximum supply voltage Maximum input voltage Symbol VDD max VIN1 max VIN2 max VIN3 max Maximum output voltage VO1 max VO2 max VO3 max Maximum output current IO1 max IO2 max Allowable power dissipation Operating temperature Storage temperature Pd max Topr Tstg Pin Name VDDd, VDDa TEST, MODE, RST XIN, RDCL MPXIN, CIN RDS-ID(READY) XOUT, RDDA, RDCL FLOUT XOUT, FLOUT, RDDA, RDCL RDS-ID(READY) (Ta≤85°C) VDD = 3.0V to 5.5V Conditions VDDa≤VDDd+0.3V Ratings -0.3 to +6.5 -0.3 to +6.5 -0.3 to VDDd+0.3 -0.3 to VDDa+0.3 -0.3 to +6.5 -0.3 to VDDd+0.3 -0.3 to VDDa+0.3 +3.0 +20.0 100 -40 to +85 -40 to +125 Unit V V V V V V V mA mA mW °C °C Allowable Operating Ranges at Ta = -40 to +85°C, VSSd = VSSa = 0V, VDDd = VDDa = 3.0V to 5.5V Parameter Supply voltage Input high-level voltage Symbol VDD VIH1 VIH2 Input low-level voltage Output voltage VIL VO1 VO2 Input amplitude VIN VXIN Guaranteed crystal oscillator frequencies Crystal oscillator operating range RDCL setup time RDCL high-level time RDCL low-level time Data output time READY output time READY low-level time tCS tCH tCL tDC tRC tRL RDCL, RDDA RDCL RDCL RDCL, RDDA RDCL, READY READY 0 0.75 0.75 0.75 0.75 107 TXtal XIN, XOUT Fo = 4.332MHz Xtal Pin Name VDDd, VDDa TEST, MODE, RST RDCL TEST, MODE, RST, RDCL RDDA, RDCL RDS-ID(READY) MPXIN XIN XIN, XOUT CI≤120Ω f = 57±2kHz 1.6 400 4.332 ±100 Conditions min Ta = -40 to +85°C 3.0 0.7VDDd 0.7VDDd 0 Ratings typ max 5.5 6.5 VDDd 0.3VDDd VDDd 6.5 50 1500 V V V V V V mVrms mVrms MHz ppm μs μs μs μs μs ms unit No.A1744-2/9 LC72725KVS Electrical Characteristics at Ta = -40 to +85°C, VSSd = VSSa = 0V, VDDd = VDDa = 3.0V to 5.5V Parameter Internal feedback resistance Hysteresis Output low-level voltage VHIS VOL1 VOL2 Output high-level voltage Input high-level current VOH IIH1 IIH2 Input low-level current IIL1 IIL2 Output off leakage current Current drain IDD VDDd+VDDa VDDd+VDDa (VDDd = VDDa = 3.3V) 1.5 2.5 IOFF TEST, MODE, RST, RDCL RDDA, RDCL RDS-ID(READY) RDDA, RDCL TEST, MODE, RST, RDCL XIN TEST, MODE, RST, RDCL XIN RDS-ID(READY) VI = 0V VO = 6.5V 2.0 VI = VDDd VI = 0V 2.0 I = 2mA I = 8mA I = -2mA VI = 6.5V VDDd-0.54 5.0 11 5.0 11 5.0 3.5 Symbol Rf XIN Pin Name Conditions min Ratings typ 1.0 0.1VDDd 0.4 0.4 max MΩ V V V V μA μA μA μA μA mA unit Bandpass Filter Characteristics at Ta = 25°C, VSSd = VSSa = 0V, VDDd = VDDa = 3.0V to 5.5V Parameter Input resistance Symbol Rmpxin Rcin Center frequency -3dB band width Gain Stop band attenuation fc BW-3dB Gain Att1 Att2 Att3 Reference voltage output Vref Pin Name MPXIN-VSSa CIN-VSSa FLOUT FLOUT MPXIN-FLOUT FLOUT FLOUT FLOUT Vref f = 57kHz Δf = ±7kHz f70kHz f