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LMX2492RTW Datasheet(PDF) 3 Page - Texas Instruments

Part # LMX2492RTW
Description  LMX2492/LMX2492-Q1 14 GHz Low Noise Fractional N PLL with Ramp/Chirp Generation
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

LMX2492RTW Datasheet(HTML) 3 Page - Texas Instruments

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background image
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
SNAS624B – MARCH 2014 – REVISED MAY 2015
6 Pin Configuration and Functions
24 Pin WQFN
RTW Package
(Top View)
Pin Functions
PIN
I/O
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 Pin for Ramp Triggers, FSK/PSK Modulation, FastLock, Readback, and Diagnostics.
13
CE
Input
Chip Enable
14
CLK
Input
Serial Programming Clock.
15
DATA
Input
Serial Programming Data
16
LE
Input
Serial Programming Latch Enable
17
MUXout
Input/Output Multiplexed Pin for Ramp Triggers, FSK/PSK Modulation, FastLock, Readback, and Diagnostics.
18
Vcc
Supply
Supply for delta sigma engine.
19
Vcc
Supply
Supply for general circuitry.
20
TRIG1
Input/Output Multiplexed Pin for Ramp Triggers, FSK/PSK Modulation, FastLock, Readback, and Diagnostics.
21
TRIG2
Input/Output Multiplexed Pin for Ramp Triggers, FSK/PSK Modulation, FastLock, Readback, and Diagnostics.
22
Vcp
Supply
Power Supply for the charge pump.
23
Rset
NC
No connect.
24
CPout
Output
Charge Pump Output
Copyright © 2014–2015, Texas Instruments Incorporated
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Product Folder Links: LMX2492 LMX2492-Q1


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