LMX2330LEVAL National Semiconductor, LMX2330LEVAL Datasheet
LMX2330LEVAL
Specifications of LMX2330LEVAL
Related parts for LMX2330LEVAL
LMX2330LEVAL Summary of contents
Page 1
... The LMX233XL are available in a TSSOP 20-pin, CSP 24-pin surface mount plastic package, and thin CSP 20-pin surface mount plastic package. Functional Block Diagram © 2001 National Semiconductor Corporation Features n Ultra low current consumption n 2.7V to 5.5V operation n Selectable synchronous or asynchronous powerdown ...
Page 2
Connection Diagrams Chip Scale Package (SLB) (Top View) Order Number LMX2330LSBX, LMX2331LSLBX or LMX2332LSLBX NS Package Number SLB24A 20-Pin Thin Chipscale Package (SLD) (Top View) Order Number LMX2330LSLDX, LMX2331LSLDX, or LMX2332LSLDX NS Package Number SLD20A www.national.com Thin Shrink Small Outline ...
Page 3
Pin Descriptions Pin No. Pin No. Pin No. LMX233XLSLD LMX233XLSLB LMX233XLTM 20-pin Thin 24-pin CSP 20-pin TSSOP CSP Package Package Package ...
Page 4
Block Diagram Note: The RF prescaler for the LMX2331L/32L is either 64/65 or 128/129, while the prescaler for the LMX2330L is 32/33 or 64/65. Note supplies power to the RF prescaler, N-counter, R-counter and phase detector ...
Page 5
... 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 Voltage on Any Pin with GND = Storage Temperature Range ( Lead Temperature (solder 4 sec Electrical Characteristics < 3.0V 3.0V; −40˚C ...
Page 6
Electrical Characteristics < 3.0V 3.0V; −40˚ Symbol Parameter t Clock Pulse Width High CWH t Clock Pulse Width Low CWL t Clock to Load Enable Set Up Time ES t Load Enable ...
Page 7
Charge Pump Current Specification Definitions sink current − sink current sink current ...
Page 8
RF Sensitivity Test Block Diagram Note 10,000 Note 2: Sensitivity limit is reached when the error of the divided RF output, F Typical Performance Characteristics LMX2330L ...
Page 9
Typical Performance Characteristics Charge Pump Current HIGH CP Charge Pump Current Variation (See (Note 6) under Charge Pump Current Specification Definitions) (Continued) Voltage Charge Pump Current 01280623 (See (Note 7) under Charge Pump ...
Page 10
Typical Performance Characteristics RF Input Impedance V = 2.7V to 5.5V MHz to 3 GHz CC IN www.national.com (Continued) IF Input Impedance V = 2.7V to 5.5V 01280627 MHz to 1000 ...
Page 11
Typical Performance Characteristics LMX233xSLD RF Input Impedance V = 2.7V to 5.5V 500 MHz to 3 GHz 100 pF Marker 1 = 500 MHz, Real = 202.98, Imaginary = −200.09 Marker 2 = 1.8 GHz, ...
Page 12
Typical Performance Characteristics LMX2332L RF Sensitivity vs Frequency Oscillator Input Sensitivity vs Frequency Functional Description The simplified block diagram below shows the 22-bit data register, two 15-bit R Counters and the 15- and 18-bit N Counters (intermediate latches are not ...
Page 13
Functional Description PROGRAMMABLE REFERENCE DIVIDERS (IF AND RF R COUNTERS) If the Control Bits are (00 for IF and 01 for RF) data is transferred from the 22-bit shift register into a latch which sets the 15-bit ...
Page 14
Functional Description 7-BIT SWALLOW COUNTER DIVIDE RATIO (A COUNTER) RF Divide Ratio • • • • • 127 ...
Page 15
Functional Description PROGRAMMABLE MODES Several modes of operation can be programmed with bits R16–R20 including the phase detector polarity, charge pump TRI-STATE and the output of the F LD pin. The prescaler and powerdown modes are selected with bits N19 ...
Page 16
Functional Description RF R[19] IF R[19] (RF LD) (IF LD don’t care condition Note ...
Page 17
Functional Description SERIAL DATA INPUT TIMING Note 1: Parenthesis data indicates programmable reference divider data. Data shifted into register on clock rising edge. Data is shifted in MSB first. Note Data to Clock Set-Up Time cs t ...
Page 18
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 10 IN power level impedance ranges ...
Page 19
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 ...
Page 20
Application Information margin. This implies that another resistor of equal value to R2 will need to be switched in parallel with R2 during the initial lock period. We must also insure that the magnitude of the open loop gain, H(s)G(s) ...
Page 21
Physical Dimensions inches (millimeters) unless otherwise noted 20-Lead (0.173" Wide) Thin Shrink Small Outline Package (TM) Order Number LMX2330LTM, LMX2331LTM or LMX2332LTM Order Number LMX2330LTMX, LMX2331LTMX or LMX2332LTMX * For Tape and Reel (2500 units per reel) NS Package Number ...
Page 22
Physical Dimensions Order Number LMX2330LSLBX, LMX2331LSLBX or LMX2332LSLBX www.national.com inches (millimeters) unless otherwise noted (Continued) 24-Pin Chip Scale Package For Tape and Reel (2500 Units per Reel) NS Package Number SLB24A 22 ...
Page 23
... 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 ...