SM5073 Datasheet, PDF (1/14 Pages) Nippon Precision Circuits Inc – VCXO ICs with Built-in Varicap

SM5073 series
VCXO ICs with Built-in Varicap
OVERVIEW
The SM5073 series are VCXO ICs with built-in varicap diode. They use a recently developed negative-resis-
tance switching oscillation circuit, at oscillation startup and during normal oscillation, for both good oscilla-
tion startup characteristics and wide pullrange. Furthermore, it employs a CMOS process varicap diode, and
also features all the necessary VCXO structure circuit components on a single chip, forming a VCXO with just
the connection of an external crystal.
FEATURES
PACKAGE DIMENSIONS
I 3.0 to 3.6V supply voltage range
I 10MHz to 60MHz operating frequency
(varies with version)
I Uses negative-resistance switching function
I Varicap diode built-in
I Frequency divider built-in (varies with version: f_O,
f_O/2, f_O/4, f_O/8, f_O/16, f_O/32)
I CMOS output level
I 50 ± 10% output duty
I 6mA (min) output drive capability
I 15pF output load capacitance C_L
I Standby function
High impedance in standby mode
(oscillator continues running)
I Package: 8-pin SOP (SM5073××S)
APPLICATIONS
I VCXO modules
I Communications application
I Networking application
I Broadcasting application
(Unit: mm)
0.695typ
5.2 0.3
1.27
0.10
0.4 0.1 _{0.12 M}
0.15
+
−
0.1
0.05
0 to 10
SERIES LINEUP
Version
SM5073A×S
SM5073B×S
SM5073C×S
SM5073D×S
SM5073E×S
SM5073F×S
Typical oscillation
frequency¹ [MHz]
16
23
30
37
44
51
SM5073×1S
f_O
Output frequency
SM5073×2S² SM5073×3S² SM5073×4S² SM5073×5S² SM5073×6S²
f_O/2
f_O/4
f_O/8
f_O/16
f_O/32
1. The typical oscillation frequency is the oscillation frequency criteria for use when selecting the device version. Note that the oscillation
characteristics and pullability vary with the crystal used and the mounting conditions. Even for the same frequency, the optimal version can vary
with crystal characteristics, so careful evaluation should be exercised when selecting the device version.
2. These versions are produced after receiving a purchase order. Please ask our Sales & Marketing section for further detail.
ORDERING INFORMATION
Device
SM5073××S
Package
8-pin SOP
SEIKO NPC CORPORATION —1