lm2326slbx National Semiconductor Corporation, lm2326slbx Datasheet
lm2326slbx
Related parts for lm2326slbx
lm2326slbx Summary of contents
Page 1
... LMX2306 - 1 3V, LMX2316 - 2 3V, and LMX2326 - 4 3V. The LMX2306/16/26 synthesizers are available in a 16-pin TSSOP surface mount plastic package. Functional Block Diagram TRI-STATE ® registered trademark of National Semiconductor Corporation. FastLock ™ , PLLatinum ™ and MICROWIRE ™ are trademarks of National Semiconductor Corporation. ...
Page 2
... V must equal Power Supply for Charge Pump. Must be P www.national.com DS100127-2 16-pin Chip Scale Package Order Number LMX2306SLBX, LMX2316SLBX or See NS Package Number SLB16A Description . CC2 .) CC . CC2 LMX2306/16/26 DS100127-19 LM2326SLBX CC1 /2 and an CC CC1 ...
Page 3
Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Power Supply Voltage V CC1 V CC2 V p Voltage on Any Pin with GND = ...
Page 4
Electrical Characteristics < 3.0V 3.0V; −40˚ Symbol Parameter ICP Current vs Voltage o Do ICP Current vs Temperature o V High-Level Output Voltage OH V Low-Level ...
Page 5
Charge Pump Current Specification Definitions sink current – V CPo sink current CPo sink current CPo ...
Page 6
RF Sensitivity Test Block Diagram Note 5: N=10,000 R=50 P=32 Note 6: Sensitivity limit is reached when the error of the divided RF output, FoLD, is greater than or equal to 1 Hz. www.national.com 6 DS100127-15 ...
Page 7
Functional Description The simplified block diagram below shows the 21-bit data register, a 14-bit R Counter, an 18-bit N Counter, and a 18-bit Function Latch (intermediate latches are not shown). The data stream is shifted (on the rising edge ...
Page 8
Functional Description 1.2 PROGRAMMABLE DIVIDER (N COUNTER) The N counter consists of the 5-bit swallow counter (A counter) and the 13-bit programmable counter (B counter). If the Control Bits are [ [1,0], data is transferred ...
Page 9
Functional Description 1.3 FUNCTION AND INITIALIZATION LATCHES Both the function and initialization latches write to the same registers. (See Section 1.7.1 DEVICE PROGRAMMING AFTER FIRST APPLYING V section for initialization latch description COUNTER ...
Page 10
Functional Description 1.3.1 POWERDOWN OPERATION Bits F[2] and F[18] provide programmable powerdown modes when the CE pin is HIGH. When CE is LOW, the part is always im- mediately disabled regardless of powerdown bit status. Refer to Table 3 ...
Page 11
Functional Description 1.3.2 LOCK DETECT OUTPUT CHARACTERISTICS Output provided to indicate when the VCO frequency is in “lock.” When the loop is locked and the open drain lock detect mode is selected, the pin’s output is HIGH, with narrow ...
Page 12
Functional Description FastLock Status F[8] FastLock Mode # 1 1 FastLock Mode # 2 1 FastLock Mode # 3 1 FastLock Mode # 4 1 Note 7: When the GO bit N[19] is set to one, the part is ...
Page 13
Functional Description TABLE 6. FastLock Timeout Counter Value Programming Timeout Cycles) (Note 8) F11 0 1 (4) F12 0 0 (8) F13 0 0 (16) F14 0 0 (32) Note 8: The timeout counter ...
Page 14
Functional Description 1.6 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 power level. f ...
Page 15
Application Information 1.7.1 DEVICE PROGRAMMING AFTER FIRST APPLYING V CC Three MICROWIRE programming methods can be used to change the function latch, R counter latch, and N counter latch contents with close phase alignment of R and N counters ...
Page 16
Application Information 1.7.6 N COUNTER The calculated value of N, and the value of P are now used to determine the values of A and B where A and B are both integer values: where B is the divisor ...
Page 17
Application Information 1.7.9 FastLock MODE 1 PROGRAMMING The F[1]–F[7] bits will be denoted and are dependent on the desired modes of the applicable functions. To program the de- vice for mode 1 FastLock, the F[8]–F[10] ...
Page 18
Physical Dimensions 16-Lead (0.173" Wide) Thin Shrink Small Outline Package (TM) Order Number LMX2306TM, LMX2316TM or LMX2326TM Order Number LMX2306TMX, LMX2316TMXor LMX2326TMX www.national.com inches (millimeters) unless otherwise noted For Tape and Reel (2500 Units Per Reel) NS Package Number MTC16 ...
Page 19
... Physical Dimensions Order Number LMX2306SLBX, LM2316SLBX or LM2326SLBX LIFE SUPPORT POLICY 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 ...