SKY74691 Datasheet | Skyworks Solutions

Features - Three-step gain control, cellular LNA - External resistor to adjust LNA bias current - Buffered LO signal for transmit upconverter - VGA with 90 d B dynamic range - Integrated IF VCO and tank circuit - VCO_ON auto-tuning control - Battery cell operation (2.7 V < VCC < 3.3 V) - RFLGA™ (48-pin, 7 x 7 mm) Pb-free package (MSL3, 260 °C per JEDEC-J-STD-020) with downset paddle The device package and pinout for the 48-pin RF Land Grid Array (RFLGA) are shown in Figure 1 and a block diagram of the SKY74691 is shown in Figure 2. The SKY74691 is a highly integrated, super-heterodyne receiver. . This single band receiver is intended for use in Code Division Multiple Access (CDMA) phones in cellular CDMA mode. Skyworks offers lead (Pb)-free “environmentally friendly” packaging that is Ro HS pliant Except for the Surface Acoustic Wave (SAW) filters and matching (European Parliament for the Restriction of ponents, the device incorporates all the ponents required Hazardous Substances). to implement the receiver chain, from the Low-Noise Amplifier (LNA) to the In-Phase and Quadrature (I/Q) demodulator stages. Description Data Shee CELL_LNA_OUT RF_BIAS_RES CELL_MIX_IN MIX_VCC GND CELL_LNA_IN GND N/C GND N/C VCC_RF_BIAS LNA_BIAS_RES LNA_0 LNA_1 VCO_ON VCO_DEC_CAP VCO_TUNE 1 2 3 4 5 6 7 8 9 10 11 12 13 48 47 46 45 44 43 42 41 40 39 38 MODE_0 LO_IN N/C N/C N/C 37 36 35 34 33 32 31 30 29 28 27 26 25 MODE_1 LO_OUT LO_BUFF_VCC N/C N/C CELL_IF+ CELL_IF- N/C N/C VGA_VCC N/C CDMA_VGA_IN+ CDMA_VGA_IN- 14 15 16 17 18 19 20 21 22 23 24 VCC_VCO VGACTRL BUFF_EN Q- XTAL SLEEP I+ I-...