lmx2337 National Semiconductor Corporation, lmx2337 Datasheet
lmx2337
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lmx2337 Summary of contents
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... GHz/1.1 GHz LMX2337 550 MHz/550 MHz General Description The LMX2335, LMX2336 and LMX2337 are monolithic, inte- grated dual frequency synthesizers, including two high fre- quency prescalers, and are designed for applications requir- ing two RF phase-lock loops. They are fabricated using National’s ABiC IV silicon BiCMOS process. ...
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... Connection Diagrams LMX2335/LMX2337 DS012332-2 Order Number LMX2335M/LMX2335TM or LMX2337M/LMX2337TM NS Package Number M16A and MTC16 Pin Descriptions Pin No. Pin No. Pin I/O 2335/37 2336 Name GND GND 6 8 OSC ...
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Pin Descriptions (Continued) Pin No. Pin No. Pin I/O 2335/37 2336 Name Power supply voltage input for RF2 analog. RF2 digital, MICROWIRE Oscillator circuits. Input may range from 2.7V to 5.5V. V capacitors should ...
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... Operating LMX2335 IN Frequency LMX2336 LMX2337 Powerdown Current LMX2335/2336 CC-PWDN LMX2337 f Oscillator Frequency OSC f OSC f Phase Detector Frequency Input Sensitivity IN and Oscillator Sensitivity OSC V High-Level Input Voltage IH V Low-Level Input Voltage IL I High-Level Input Current ...
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... T = 25˚C, except as specified Symbol Parameter I Charge Pump LMX2335 D o -TRI TRI-STATE LMX2336 CURRENT I Charge Pump LMX2337 D o -TRI TRI-STATE CURRENT V High-Level Output Voltage OH V Low-Level Output Voltage OL t Data to Clock Setup Time CS I Data to Clock Hold Time CH t Clock Pulse Width High ...
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Typical Performance Characteristics Charge Pump Current vs D Voltage o = HIGH I CP LMX2335/37 Input Impedance (for SO package) = 2.7V to 5.5V MHz to 1.5 GHz Marker GHz, Real ...
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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 ...
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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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Application Information (Continued) Loop Gain Equations A linear control system model of the phase feedback for a PLL in the locked state is shown in Figure 2 . The open loop gain is the product of the phase comparator gain ...
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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 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 ...