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LMX2487ESQE Datasheet(PDF) 3 Page - Texas Instruments |
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LMX2487ESQE Datasheet(HTML) 3 Page - Texas Instruments |
3 / 47 page FinIF 24 14 15 13 16 17 18 19 20 23 21 22 7 12 11 8 10 9 5 4 6 3 2 1 Pin 0 (Ground Substrate) VddIF1 GND CPoutIF VddIF2 OSCout LE FinRF* FinRF VddRF1 GND CPoutRF LMX2487E www.ti.com SNAS404B – MAY 2007 – REVISED JANUARY 2016 5 Pin Configuration and Functions RTW Package 24-Pin WQFN Top View Pin Functions PIN I/O DESCRIPTION NO. NAME 0 GND — Ground Substrate. This is on the bottom of the package and must be grounded. 1 CPoutRF O RF PLL charge pump output. 2 GND — RF PLL analog ground. 3 VddRF1 — RF PLL analog power supply. 4 FinRF I RF PLL high-frequency input pin. 5 FinRF* I RF PLL complementary high-frequency input pin. Shunt to ground with a 100-pF capacitor. MICROWIRE Load Enable. High-impedance CMOS input. Data stored in the shift registers is loaded 6 LE I into the internal latches when LE goes HIGH 7 DATA I MICROWIRE Data. High-impedance binary serial data input. MICROWIRE Clock. High-impedance CMOS Clock input. Data for the various counters is clocked 8 CLK I into the 24-bit shift register on the rising edge 9 VddRF2 — Power supply for RF PLL digital circuitry. 10 CE I Chip Enable control pin. Must be pulled high for normal operation. 11 VddRF5 I Power supply for RF PLL digital circuitry. 12 Ftest/LD O Test frequency output / Lock Detect. 13 FinIF I IF PLL high-frequency input pin. 14 VddIF1 — IF PLL analog power supply. 15 GND — IF PLL digital ground. 16 CPoutIF O IF PLL charge pump output 17 VddIF2 — IF PLL power supply. 18 OSCout O Buffered output of the OSCin signal. Oscillator enable. When this is set to high, the OSCout pin is enabled regardless of the state of other 19 ENOSC I pins or register bits. 20 OSCin I Reference Input. 21 NC I This pin must be left open. 22 VddRF3 — Power supply for RF PLL digital circuitry. 23 FLoutRF O RF PLL Fastlock Output. Also functions as Programmable TRI-STATE CMOS output. 24 VddRF4 — RF PLL analog power supply. Copyright © 2007–2016, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Links: LMX2487E |
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