CX74037 Datasheet | Conexant Systems

Features - Sectional enable lines for independent control of circuits within the chip - 90 d B IF VGA range - Separate IF frequencies can be used for the 800 MHz (AMPS) and 1900 MHz Bands (PCS) - Dual drivers for 800 MHz and 1900 MHz - PA driver is deactivated by using the Driver Enable signal when there is no transmission - Available in a 48-pin, 7x7 LGA package with downset paddle Applications - Cellular and/or PCS-band phones - TDMA and/or AMPS-mode phones - Portable battery powered equipment .. IF_VCO_IN2+ IF_VCO_IN2LO_PCS_IN IF_SELECT VCC_MIX LO_CELL VGA_EN MODE MIX_IN+ MIX_INVCC_IF VGA_GC VGA_OUTVGA_OUT+ VCC_LD_PCS POT_CELL DRV_ENA RF_PCS_OUT VCC_BIAS RF_CELL_OUT BAND 1 2 3 4 5 6 7 8 9 10 11 12 13 VCC_DRV_CEL VCC_MID_PCS VCC_MOD DRV_PCS_IN POT_PCS I_DATA+ DRV_CELL_IN Q_DATA+ I_DATAQ_DATANC 14 15 16 17 18 19 20 21 22 23 24 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 NC IF_VCO_IN1IF_VCO_IN1+ NC NC NC VCC_DIV MIX_CELL_OUT PULL_ENA VCC_DIFF_DRV MIX_PCS_OUT NC NC 101103A-1_080400 Figure 1. CX74037 48-Pin, 7x7 LGA Package Pin Configuration Data Sheet Conexant Proprietary Data Subject to Change Doc. No. 101103A September 27, 2000 .. .. The CX74037 48-pin, 7x7 LGA package pin configuration is shown in Figure 1. A CX74037 block diagram is shown in Figure 2. .. CX74037 Transmit RF IC for TDMA or AMPS Applications PCS RF SAW PCS LO Cell LO IF LO IN CX74037 PCS-TDMA RF Out TX RFIC VCC I Data IF Select Band Select PULL En PA Driver En VGA En Q Data Interface ÷2 Cell RF Out Vvga 101103A-2_080900 Cell RF SAW LPF or...