
SM5023 series
NIPPON PRECISION CIRCUITS INC.—1
Miniature-package Crystal Oscillator Module ICs
OVERVIEW
The SM5023 series are 3rd overtone crystal oscillator module ICs. They feature built-in oscillator capacitors
with excellent frequency response. As cutoff frequency can be configured by using an external feedback resis-
tor R
fo
, a favorable 3rd overtone oscillation can be realized with a few external components. The oscillator cir-
cuit characteristics are optimized for a 3rd overtone oscillation by round blank. They also feature a built-in
output buffer with high output drive capability and are available in miniature 6-pin package, making them ideal
as DIP-type crystal oscillators.
FEATURES
I
Operating supply voltage range
3V operation: 2.7 to 3.6V
5V operation: 4.5 to 5.5V
4MHz to 70MHz operating frequency range
(Oscillation frequency is settable by external com-
ponents)
–40 to 85
°
C operating temperature range
Oscillator capacitors C
G
, C
(BN
×
H version only)
Cutoff frequency setting using external feedback
resistor R
fo
Output drive capability
8mA (V
DD
= 2.7V)
16mA (V
DD
= 4.5V)
Output three-state function built-in
High impedance output in standby mode
CMOS output duty level (1/2VDD)
Molybdenum-gate CMOS process
Package: SOT23-6 (SM5023
I
I
I
D
built-in
I
I
I
I
I
I
×××
H)
PACKAGE DIMENSIONS
(Unit: mm)
APPLICATIONS
I
DIP-type crystal oscillator modules
SERIES CONFIGURATION
ORDERING INFORMATION
1.9
±
0.2
2.9
±
0.2
2
±
0.4
±
0.1
1
±
0
0
1
+
M
0.20
0.95
0.1
0.15+ 0.1
Version
Operating
Supply voltage
range [V]
Recommended
operating
frequency
range
[MHz]
1
1. The 3rd overtone frequency range using an external resistor to set the cutoff frequency. The recommended operating frequency is a yardstick value
derived from the crystal used for NPC characteristics authentication. However, the oscillator frequency band is not guaranteed. Specifically, the char-
acteristics can vary greatly due to crystal characteristics and mounting conditions, so the oscillation characteristics of components must be carefully
evaluated.
Oscillator circuit constants
Output
duty level
Standby mode
gm ratio
Built-in capacitance
Rf [k
]
Oscillator
Output
state
C
G
[pF]
C
D
[pF]
SM5023BNDH
2.7 to 3.6
22 to 70
3
8
15
–
CMOS
Operation
Hi-Z
4.5 to 5.5
SM5023BNEH
2.7 to 3.6
50 to 70
4
8
12
–
CMOS
Operation
Hi-Z
SM5023CNDH
2.7 to 3.6
4 to 70
3
–
–
–
CMOS
Operation
Hi-Z
4.5 to 5.5
Device
Package
SM5023
×××
H
SOT23-6