LMX2323 Datasheet | National Semiconductor

LMX2323 PLLatinum 2.0 GHz Frequency Synthesizer for RF Personal munications October 2000 LMX2323 PLLatinum™ 2.0 GHz Frequency Synthesizer for RF Personal munications General Description The LMX2323 is a high performance frequency synthesizer with integrated 32/33 dual modulus prescaler designed for RF operation up to 2.0 GHz. Using a proprietary digital phase locked loop technique, the LMX2323’s linear phase detector characteristics can generate very stable, low noise control signals for UHF and VHF voltage controlled oscillators. Serial data is transferred into the LMX2323 via a three-line MICROWIRE™ interface (Data, LE, Clock). Supply voltage range is from 2.7V to 5.5V. The LMX2323 Features very low curent consumption, typically 3.5m A at 3V. The charge pump provides 4 m A output current. The LMX2323 is manufactured using National’s ABi C V Bi CMOS process and is packaged in a 16-pin TSSOP. Features n RF operation up to 2.0 GHz n 2.7V to 5.5V operation n Low current consumption: Icc = 3.5m A (typ) at Vcc=3.0V n Digital Lock Detect n Dual modulus prescaler: 32/33 n Internal balanced, low leakage charge pump Applications n Cellular telephone systems (GSM, NADC, CDMA, PDC, PHS) n Personal wireless munications (DCS-1800, DECT, CT-1+) n Wireless local area networks (WLANs) n DCS/PCS infrastructure equipment n Other wireless munication systems Functional Block Diagram DS101362-1 TRI-STATE ® is a registered trademark of National Semiconductor Corporation. MICROWIRE™ and PLLatinum™ are trademarks of National Semiconductor Corporation. © 2000 National Semiconductor Corporation DS101362 .national. Connection Diagram DS101362-2 Top View Order Number LMX2323TM, LMX2323TMX See NS Package Number MTC16 Pin Descriptions Pin No. 1 3 4 Pin Name OSCIN VP VCC I/O I - - Description Oscillator input. A CMOS inverting gate input. The input has a VCC/2 input threshold and can be driven from an external CMOS or TTL logic gate. Power supply for charge...