S5T8803A

10 CH PLL S5T8803A INTRODUCTION The S5T8803A is designed to select 10 channels of a cordless phone, whose frequency band is 46/49MHz. It has a reference frequency generator, programmable divider for Transmit and Receive section, and phase detector. 16−DIP−300A FEATURES Able to select 10 Channels: S5T8803A (both transmit/receive) Include oscillation circuit with external x-tal (10.24MHz) 5KHz output for guard tone Unlock detector (phase difference more than 6.25us) Standby function for power saving 16−SOP−225 ORDERING INFORMATION Device S5T8803A01-D0B0 S5T8803A01-S0B0 Package 16−DIP−300A 16−SOP−225 Operating Temperature −30°C to +75°C 1 S5T8803A 10 CH PLL BLOCK DIAGRAM VDD VSS 15 12 + VDD OSCI 16 1 11 PHASE DETECTOR (Tx) 4 REFERENCE DIVIDER F1 OSCO PDT PHASE DETECTOR (Rx) 13 PDR TIF 9 PROGRAMMABLE DIVIDER (Tx) PROGRAMMABLE DIVIDER (Rx) 14 + RIF DECODER UNLOCK DETECTOR 10 LDT 3 SB 5 D0 6 D1 7 D2 8 2 D3 MODE PIN CONFIGURATION OSCO 1 2 3 4 S5T8803A 5 6 7 8 16 15 14 13 12 11 10 9 OSCI MODE VDD SB RIF F1 PDR D0 VSS PDT D1 D2 LDT D3 TIF 2 10 CH PLL S5T8803A PIN DESCRIPTION Pin No 1 2 Symbol OSCO MODE Description This output generates the reference frequency when it is connected to Pin 16 with the external OSC, whose frequency is 10.24MHz. Base/Remote Unit Selection Pin. “High”: Base Unit “Low” : Remote Unit Standby pin. This input controls Tx PLL for reducing the power dissipation “High”: Normal operation “Low”: ...