LMX2370TM National Semiconductor, LMX2370TM Datasheet
LMX2370TM
Specifications of LMX2370TM
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LMX2370TM Summary of contents
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... MICROWIRE are trademarks of National Semiconductor Corporation. ™ ™ ™ TRI-STATE ® registered trademark of National Semiconductor Corporation. © 2003 National Semiconductor Corporation Features n 2.7V–5.5V operation n Ultra low current consumption n Low phase detector noise floor n Low voltage MICROWIRE n Low prescaler values ...
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... Connection Diagrams TSSOP 20-Pin Package Top View TSSOP Order Number: LMX2370TM, LMX2370TMX See NS Package Number MTC20 Pin Descriptions Pin No. Pin 24-Pin 20-Pin I/O Name CSP/ TSSOP TCSP — Vp1 — GND — www.national.com 10102602 Description Power supply voltage input for RF analog and RF digital circuits ...
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Pin Descriptions (Continued) Pin No. Pin 24-Pin 20-Pin I/O Name CSP/ TSSOP TCSP GND — OSC GND — Fo/ Clock I ...
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Pin Descriptions (Continued) Pin No. Pin 24-Pin 20-Pin I/O Name CSP/ TSSOP TCSP Vp2 — — 13, — NC — 21 Block Diagram NOTE: * ...
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... Absolute Maximum Ratings 2) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Power Supply Voltage Vp1 Vp2 Vµc Voltage on any pin with GND = Storage Temperature Range ( Lead Temperature (solder, 4 sec.) (T ESD - Human Body Model (Note 2) ...
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Electrical Characteristics CHARGE PUMP Symbol Parameter ICP Current vs Temperature o A DIGITAL INTERFACE (DATA, CLOCK, LE) Symbol Parameter V High-Level Input Voltage IH V Low-Level Input Voltage IL I High-Level Input Current IH I Low-Level Input ...
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Charge Pump Current Specification Definitions − ∆ sink current sink current ∆ sink current ...
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RF Sensitivity Test Block Diagram Note 10,000 Note: Sensitivity limit is reached when the error of the divided RF output, F Typical Performance Characteristics LMX2370 Charge Pump ...
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Typical Performance Characteristics Sink vs Source 1x-Mode Mismatch (See Note 2 under Charge Pump Current Specification Definitions) RF Input Impedance 25˚ 2.7V to 5.5V kHz to 3 GHz CC IN Marker 1 ...
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Typical Performance Characteristics LMX2370 RF Sensitivity vs Frequency Oscillator Input Sensitivity vs Frequency www.national.com (Continued) Auxiliary Input Sensitivity vs Frequency 10102631 10102635 10 10102634 ...
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... Functional Description The basic phase-lock-loop (PLL) configuration consists of a high-stability crystal reference oscillator, a frequency synthe- sizer such as the National Semiconductor LMX2370, a volt- age controlled oscillator (VCO), and a passive loop filter. The frequency synthesizer includes a phase detector, a current mode charge pump, as well as programmable reference [R] and feedback [N] frequency dividers ...
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Functional Description rent is programmed via MICROWIRE interface. When the charge pump circuit receives an input to deliver 4 times the normal current per unit phase error, an open drain NMOS on chip device (FoLD) switches in a second ...
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Main_R Main_N 13 www.national.com ...
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Programming Description 2.2 PROGRAMMABLE REFERENCE DIVIDERS (Main and Aux R Counters) 2.2.1 Aux_R Register If the ADDRESS[1:0] field is set data is transferred from the 22-bit shift register into the Aux_R register when Load Enable (LE) ...
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Programming Description Most Significant Bit Aux_N 2.3.2 Main_N Register If the ADDRESS[1:0] field is set data is transferred from the 22-bit shift register into the Main_N register which sets the ...
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Programming Description P_Main, (Main_N18) or P_Aux (Aux_N18 PLL Input Frequency > f 1.2 GHz IN < < 550 f 1200 MHz IN < f 550 MHz IN 2.3.5.1 Pulse Swallow Function ...
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Programming Description 2.3.7 Power Down Mode Table Main PLL Auxiliary PLL Active Active Active Powered Down Powered Down Active Powered Down Powered Down 2.4 PROGRAMMABLE MODES Several modes of operation can be programmed with bits R15–R19 including the phase ...
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Programming Description 2.4.4 The FoLD Output Truth Table Main Aux Main R[18] R[18] R[19 ...
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Programming Description 2.5 SERIAL DATA INPUT TIMING NOTES: Parenthesis data indicates programmable reference divider data. Data shifted into register on clock rising edge. Data is shifted in MSB first. TEST CONDITIONS: The Serial Data Input Timing is tested using ...
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Typical Application Example Operational Notes: * VCO is assumed AC coupled increases impedance so that VCO output power is IN provided to the load rather than the PLL. Typical val- ues are 10Ω to 200Ω depending on the ...
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Application Information A block diagram of the basic phase locked loop is shown in Figure 1. FIGURE 1. Basic Charge Pump Phase Locked Loop LOOP GAIN EQUATIONS A linear control system model of the phase feedback for a PLL in ...
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Application Information other terms in the gain and phase Equations (5), (6) will have to compensate by the corresponding “1/w” or “1/w Examination of Equations (3), (4), (6) indicates the damping resistor variable R2 could be chosen to compensate the ...
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... Physical Dimensions inches (millimeters) unless otherwise noted Thin Shrink Small Outline (TSSOP) Package Order Number LMX2370TM * For Tape and Reel (2500 units per reel) Order Number LMX2370TMX NS Package Number MTC20 23 www.national.com ...
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Physical Dimensions www.national.com inches (millimeters) unless otherwise noted (Continued) Chip Scale Package For Tape and Reel (2500 Units Per Reel) Order Numbers: LMX2370SLBX NS Package Number SLB24A 24 ...
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... BANNED SUBSTANCE COMPLIANCE National Semiconductor certifies that the products and packing materials meet the provisions of the Customer Products Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification (CSP-9-111S2) and contain no ‘‘Banned Substances’’ as defined in CSP-9-111S2. ...