LMX2316 - National Semiconductor

LMX2316 PLLatinum Low Power Frequency Synthesizer

The LMX2306/16/26 are monolithic, integrated frequency synthesizers with prescalers that are designed to be used to generate a very stable low noise signal for controlling the local oscillator of an RF transceiver. They are fabricated using National’s ABiC V silicon BiCMOS 0.5µ process. The LMX2306 contains a 8/9 dual modulus prescaler while the LMX2316 and .

Features

n n n n n 2.3V to 5.5V operation Ultra low current consumption 2.5V VCC JEDEC standard compatible Programmable or logical power down mode: — ICC = 1 µA typical at 3V Dual modulus prescaler: — LMX2306 8/9 — LMX2316/26 32/33 Selectable charge pump TRI-STATE ® mode Selectable FastLock™ mode with timeout counter MICROWIRE™ Interface Digital Lock Detect n n n n Applications n n n n n Portable wireless communications (PCS/PCN, cordless) Wireless Local Area Networks (WLANs) Cable TV tuners (CATV) Pagers Other wireless communication systems Functional Block Diagram DS100127-1 TRI-STATE ® is a reg.