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CF5002LB Schematic ( PDF Datasheet ) - Nippon Precision Circuits Inc

Teilenummer CF5002LB
Beschreibung Crystal Oscillator Module ICs
Hersteller Nippon Precision Circuits Inc
Logo Nippon Precision Circuits Inc Logo 




Gesamt 9 Seiten
CF5002LB Datasheet, Funktion
NIPPON PRECISION CIRCUITS INC.
SM5002L series
Crystal Oscillator Module ICs
OVERVIEW
The SM5002L series crystal oscillator module ICs fabricated in NPC’s Molybdenum-gate CMOS. They
comprise low-voltage low-current consumption oscillator circuits and output buffers. They incorporate built-in
oscillation capacitance with superior frequency response to realize stable 3rd overtone oscillation without any
external components.
FEATURES
s Oscillation frequency up to 100 MHz
s Third harmonic
s Capacitors CG and CD built-in
s Standby function (oscillator stops)
s 3 µA (typ) low standby current
s Inverter amplifier feedback resistance built-in
s INH pin pull-up resistance built-in
• INH= L : 2Mtyp
• INH= H : 90ktyp
s CMOS input level
s 8 mA (VDD = 3.0 V) output drive capability
s CMOS output duty level
s Output three-state function
s 2.7 to 3.6 V supply voltage
s Oscillator frequency output
s 8-pin SOP (SM5002L×S)
s Chip form (CF5002L×)
SERIES CONFIGURATION
Version
CF5002LA
SM5002LAS
CF5002LB
SM5002LBS
CF5002LC
SM5002LCS
CF5002LD
SM5002LDS
CF5002LE
SM5002LES
CF5002LF
SM5002LFS
Recommended
operating
frequency range
(MHz)
30 to 40
40 to 50
50 to 70
70 to 90
85 to 100
25 to 30
gm
(relative
value)
1.0
1.5
1.5
2.0
2.0
1.0
Built-in capacitance
CG (pF) CD (pF)
8 15
8 15
8 10
8 10
8 10
10 15
ORDERING INFORMATION
Rf1
(k)
5.6
4.7
3.9
3.9
2.7
8.5
Cf
(pF)
Output
duty level
Output
current
(mA)
Standby
function
22 CMOS
8
Yes
22 CMOS
8
Yes
22 CMOS
8
Yes
22 CMOS
8
Yes
22 CMOS
8
Yes
22 CMOS
8
Yes
Device
SM5002L×S
CF5002L×
Package
8-pin SOP
Chip form
NIPPON PRECISION CIRCUITS—1






CF5002LB Datasheet, Funktion
SM5002L series
Switching Characteristics
VSS = 0 V, Ta = 20 to 80 °C unless otherwise noted.
Parameter
Symbol
Conditions
Limits
Units
min typ max
Output rise time
Output fall time
Output duty cycle1
Output disable delay time2
Output enable delay time2
tr1
tr2
tf1
tf2
DUTY
tPLZ
tPZL
Measurement cct 3,
load cct 1,
0.1VDD 0.9VDD
Measurement cct 3,
load cct 1,
0.9VDD 0.1VDD
Measurement cct 3,
load cct 1,
Ta = 25 °C,
VDD = 3.0 V
VDD = 2.7 to 3.6 V,
CL = 15 pF
VDD = 3.0 to 3.6 V,
CL = 30 pF
VDD = 2.7 to 3.6 V,
CL = 15 pF
VDD = 3.0 to 3.6 V,
CL = 30 pF
SM5002LAS, SM5002LFS
CF5002LA, CF5002LF
CL = 30 pF, f = 30 MHz
SM5002LBS, CF5002LB
CL = 30 pF, f = 50 MHz
SM5002LCS, CF5002LC
CL = 30 pF, f = 70 MHz
SM5002LDS, SM5002LES
CL = 15 pF, f = 100 MHz
CF5002LD, CF5002LE
CL = 15 pF, f = 100 MHz
Measurement cct 6, Ta = 25 °C, VDD = 2.7 V,
load CL 15 pF
45
45
45
40
45
24
2.5 5
24
2.5 5
– 55
– 55
– 55
– 60
– 55
– 100
– 100
ns
ns
ns
ns
%
%
%
%
%
ns
ns
1. Monitored in sample lots.
2. Oscillator stop function is built-in. When INH goes LOW, normal output stops. When INH goes HIGH, normal output is not resumed until after the
oscillator start-up time has elapsed.
Current consumption and Output waveform with NPC’s standard crystal
Cb
L Ca R
f (MHz)
30
50
70
100
R ()
18.62
22.17
25.42
16.60
L (mH)
16.24
7.40
4.18
3.56
Ca (fF)
1.733
1.370
1.254
0.726
Cb (pF)
5.337
4.105
5.170
5.394
FUNCTIONAL DESCRIPTION
Standby Function
The oscillator stops when INH goes LOW. When the oscillator stops, the oscillator output on Q goes high
impedance.
INH
HIGH (or open)
LOW
Q
fO output frequency
High impedance
Oscillator
Normal operation
Stopped
NIPPON PRECISION CIRCUITS—6

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