Document No. 008-0371-0

Page 3 - 4

Rev. C

Model 520

TCXO/VCTCXO – Clipped Sine Wave

ELECTRICAL CHARACTERISTICS

MECHANICAL SPECIFICATIONS

TEST CIRCUIT – RL//CL LOAD

* DC-Cut Capacitor

D.U.T. PIN ASSIGNMENTS

PIN

SYMBOL

DESCRIPTION

GND – TCXO [Note 1]

1

VC

Control Voltage – VCTCXO

2

GND

Circuit & Package Ground

3

Output

Clipped Sine Wave Output [Note 2]

4

VCC

Supply Voltage

NOTES

1. Connect to ground for TCXO (no AFC) option.

2. DC-Cut Capacitor Required.

Add 1000pF capacitor between TCXO output and input of load.

TABLE I – DATE CODE

2001

2005

2009

2013

2017

A

B

C

D

E

F

G

H

J

K

L

M

2002

2006

2010

2014

2018

N

P

Q

R

S

T

U

V

W

X

Y

Z

2003

2007

2011

2015

2019

a

b

c

d

e

f

g

h

j

k

l

m

2004

2008

2012

2016

2020

n

p

q

r

s

t

u

v

w

x

y

z

MONTH

JAN

FEB

MAR

DEC

YEAR

AUG

SEP

OCT

NOV

APR

MAY

JUN

JUL

PACKAGE DRAWING

M520

● DXXX

MARKING INFORMATION

1. M520 - CTS Model Series.

2. ● – Pin 1 identifier.

3. D – Date code. See Table I for

codes.

4. XXX – Frequency code. Reference

CTS document 016-1454-01.

Complete CTS part number, frequency

value and date code information must

appear on reel and carton labels.

NOTES

1. DO NOT make connections to non-

labeled pins and castellations, as

they may have internal connections

used in the manufacturing process.

2. Termination pads (e4); barrier

plating is nickel (Ni) with gold (Au)

flash plate.

3. Reflow conditions per JEDEC J-

STD-020, 260°C maximum.

SUGGESTED SOLDER PAD GEOMETRY

CBYPASS should be ≥ 0.01 uF.