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LMX2492 Datasheet(PDF) 3 Page - Texas Instruments |
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LMX2492 Datasheet(HTML) 3 Page - Texas Instruments |
3 / 41 page CE 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) CLK DATA LE MUXout Vcc Vcc Fin* Fin GND GND GND LMX2492, LMX2492-Q1 www.ti.com SNAS624A – MARCH 2014 – REVISED JUNE 2014 6 Pin Configuration and Functions 24 Pin RTW Package (Top View) Pin Functions TERMINAL TYPE DESCRIPTION NUMBER NAME 0 DAP GND Die Attach Pad. Connect to PCB ground plane. 1 GND GND Ground for charge pump. 2,3 GND GND Ground for Fin Buffer Complimentary high frequency input pins. Should be AC coupled. If driving single-ended, Fin 4,5 Input impedance as seen from Fin and Fin* pins looking outwards from the part should be roughly the Fin* same. 6 Vcc Supply Power Supply for Fin Buffer 7 Vcc Supply Supply for On-chip LDOs 8 Vcc Supply Supply for OSCin Buffer 9 OSCin Input Reference Frequency Input Complimentary input for OSCin. GND/ 10 GND/Input If not used, it is recommended to match the termination as seen from the OSCin terminal looking OSCin* outwards. However, this may also be grounded as well. 11 GND GND Ground for OSCin Buffer 12 MOD Input/Output Multiplexed Input/Output Pins for Ramp Triggers, FSK/PSK Modulation, FastLock, and Diagnostics 13 CE Input Chip Enable 14 CLK GND Serial Programming Clock. 15 DATA GND Serial Programming Data 16 LE Input Serial Programming Latch Enable 17 MUXout Input/Output Multiplexed Input/Output Pins for Ramp Triggers, FSK/PSK Modulation, FastLock, and Diagnostics 18 Vcc Supply Supply for delta sigma engine. 19 Vcc Supply Supply for general circuitry. 20 TRIG1 Input/Output Multiplexed Input/Output Pins for Ramp Triggers, FSK/PSK Modulation, FastLock, and Diagnostics 21 TRIG2 Input/Output Multiplexed Input/Output Pins for Ramp Triggers, FSK/PSK Modulation, FastLock, and Diagnostics 22 Vcp Supply Power Supply for the charge pump. 23 Rset NC No connect. 24 CPout Output Charge Pump Output Copyright © 2014, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Links: LMX2492 LMX2492-Q1 |
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