(China (Mainland))
Product Summary
The LMX2322 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 LMX2322’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 LMX2322 via a three-line MICROWIRETM interface (Data, LE, Clock). Supply voltage range is from 2.7 V to 3.9 V. The LMX2322 features very low current consumption, typically 3.5 mA at 3.75V. The charge pump provides 4mA output current.The LMX2322 is manufactured using National’s ABiC V BiCMOS process and is packaged in a 16 pin TSSOP and a 16 pin Chip Scale Package (CSP).
Parametrics
Absolute Maximum Ratings (Note 1):
(1)Power Supply Voltage,Vcc: -0.3 ~4.3 V;
(2)Power Supply for Charge Pump, Vp: Vcc ~4.3 V;
(3)Voltage on any pin with GND=0 volts, Vi: -0.3~ Vcc+0.5 V;
(4)Storage Temperature Range, TS: -65~+150℃;
(5)Lead Temp. (solder 4 sec), TL :+ 260℃;
(6)ESD - whole body model (Note 2):2 kV
Notes:
1. Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Conditions indicate conditions for which the device is intended to be functional. For guaranteed specifications and test conditions,see the Electrical Characteristics.
2. This device is a high performance RF integrated circuit and is ESD sensitive. Handling and assembly of this device should on be done on ESD protected workstations.
Features
(1)RF operation up to 2.0 GHz;
(2)2.7 V to 3.9 V operation;
(3)Low current consumption: Icc = 3.5 mA (typ) at Vcc = 3.75 V;
(4)Dual modulus prescaler: 32/33;
(5)Internal balanced, low leakage charge pump
Diagrams
<IMG border=0 src="http://www.seekic.com/uploadfile/ic-mfg/20128402952377.jpg">
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