LMX2335 National Semiconductor, LMX2335 Datasheet
LMX2335
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LMX2335 Summary of contents
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... RF local oscillator signals. Serial data is transferred into the LMX2335/36/37 via a three wire interface (Data, Enable, Clock). Supply voltage can range from 2.7V to 5.5V. The LMX2335/36/37 feature very low current consumption ...
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... Power supply for RF1 charge pump. Must be RF1 charge pump output. For connection to a loop filter for driving the input of an external VCO. LMX2335/37: Ground for RF1 analog and RF1 digital circuits. LMX2336: Ground for RF digital circuitry. First RF prescaler input. Small signal input from the VCO. ...
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... R-counter along with the OSC buffer, MICROWIRE, and F in voltage level and V 2 can be run separately as long LMX2335/37 Pin # Description 2 supplies power to the RF2 prescaler, N-counter, phase CC LD and V 2 are clamped to each other by diodes and must be run at the same ...
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... GND = Storage Temperature Range ( Electrical Characteristics = 5.0V 5.0V 25˚C, except as specified Symbol Parameter I Power Supply LMX2335/37 CC Current RF1 and RF2 I LMX2335/37 RF1 CC only I LMX2336 CC RF1 and RF2 LMX2336 RF1 only f 1 Operating LMX2335 IN Frequency LMX2336 ...
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... Note 2: This device is a high performance RF integrated circuit with an ESD rating be done at ESD protected workstations. Note 3: See PROGRAMMABLE MODES for I description Note 4: Clock, Data and LE does not include Typical Performance Characteristics ICC LMX2335/37 (Continued) Conditions 0. − 0. 25˚C 0. − ...
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... Marker 4 = 500 MHz, Real = 201, Imaginary = −224 www.national.com (Continued) Charge Pump Current LOW I CP DS012332-21 LMX2335/37 Input Impedance (for TSSOP package) LMX2336 Input Impedance MHz to 2.5 GHz f IN DS012332-23 Marker GHz, Real = 97, Imaginary = −146 Marker 2 = 1.89 GHz, Real = 43, Imaginary = −67 Marker 3 = 2.5 GHz, Real = 30, Imaginary = −33 Marker 4 = 500 MHz, Real = 189, Imaginary = − ...
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... Typical Performance Characteristics I TRI-STATE Voltage o LMX2335/37 RF2 Sensitivity vs Frequency LMX2336 RF2 Sensitivity vs Frequency (Continued) LMX2335/37 RF1 Sensitivity vs Frequency DS012332-25 LMX2336 RF1 Sensitivity vs Frequency DS012332-27 Oscillator Input Sensitivity vs Frequency DS012332-29 7 DS012332-26 DS012332-28 DS012332-30 www.national.com ...
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Functional Description The simplified block diagram below shows the 22-bit data register, two 15-bit R Counters and two 18-bit N Counters (intermediate latches are not shown). The data stream is clocked (on the rising edge of Clock) into the DATA ...
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Functional Description (Continued) PROGRAMMABLE DIVIDER (N COUNTER) Each N counter consists of the 7-bit swallow counter (A counter) and the 11-bit programmable counter (B counter). If the Control Bits are (10 for RF2 counter and 11 for ...
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Functional Description RF2 Phase Detector Polarity 0 1 RF1 Phase Detector Polarity Phase Detector Polarity (Note 7) 0 Negative 1 Positive LOW current state = 1 Note 5: The I CP ...
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Functional Description (Continued) Note 9: When the F LD output is disabled it is actively pulled to a low logic state. o Note 10: Lock detect output provided to indicate when the VCO frequency is in “lock”. When the loop ...
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Typical Application Example Operational Notes: * VCO is assumed AC coupled increases impedance so that VCO output power is provided to the load rather than the PLL. Typical values are 200 depending on the VCO ...
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... Fastlock. Fastlock Circuit Implementation A diagram of the Fastlock scheme as implemented in Na- tional Semiconductors LMX2335/36/37 PLL is shown in Fig- (3) ure 5 . When a new frequency is loaded, and the RF1 I (4) is set high, the charge pump circuit receives an input to de- ...
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Application Information www.national.com (Continued) FIGURE 4. Open Loop Response Bode Plot FIGURE 5. Fastlock PLL Architecture 14 DS012332-15 DS012332-18 ...
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... Physical Dimensions inches (millimeters) unless otherwise noted JEDEC 16-Lead (0.150" Wide) Small Outline Molded Package (M) Order Number LMX2335M or LMX2337M * For Tape and Reel (2500 Units Per Reel) Order Number LMX2335MX or LMX2337MX NS Package Number M16A 15 www.national.com ...
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... Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 16-Lead Thin Shrink Small Outline Package (TM) Order Number LMX2335TMX or LMX2337TMX www.national.com Order Number LMX2335TM or LMX2337TM * For Tape and Reel (2500 Units Per Reel) NS Package Number MTC16 16 ...
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Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 20-Lead (0.173" Wide) Thin Shrink Small Outline Package (TM) * For Tape and Reel (2500 Units Per Reel) Order Number LMX2336TM Order Number LMX2336TMX NS Package Number MTC20 17 www.national.com ...
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... NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant ...