CF5015 Datasheet, PDF (7/10 Pages) Nippon Precision Circuits Inc – 2.5V Operation Fundamental Frequency Crystal Oscillator Module ICs

CF5015 series
5V operation (CF5015BL×)
V_DD = 4.5 to 5.5V, V_SS = 0V, Ta = −40 to +85°C unless otherwise noted.
Parameter
Symbol
Condition
Rating
Unit
min
typ
max
Output rise time
Output fall time
Output duty cycle^*1
Output disable delay time^*2
Output enable delay time*²
t_r1
t_r2
t_f1
t_f2
Duty1
t_PLZ
t_PZL
Measurement cct 3, load cct 1,
0.1V_DD to 0.9V_DD
Measurement cct 3, load cct 1,
0.9V_DD to 0.1V_DD
Measurement cct 3, load cct 1,
V_DD = 5.0V, Ta = 25°C
C_L = 15pF
C_L = 30pF
C_L = 15pF
C_L = 30pF
C_L = 30pF
f = 60MHz
Measurement cct 6, load cct 1, V_DD = 5.0V, Ta = 25°C,
C_L = 15pF
–
1.7
3.4
ns
–
3
6
–
1.7
3.4
ns
–
3
6
45
–
55
%
–
–
100
ns
–
–
100
ns
*1. The duty cycle characteristic is checked the sample chips of each production lot.
*2. Oscillator stop function is built-in. When INHN goes LOW, normal output stops. When INHN 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]
50
60*
R [Ω]
16.12
−
L [mH]
6.88
−
Ca [fF]
1.48
−
Cb [pF]
1.18
−
* The 60MHz crystal parameter is confidential.
FUNCTIONAL DESCRIPTION
Standby Function
When INHN goes LOW, the oscillator stops and the oscillator output on Q becomes high impedance.
INHN
HIGH (or open)
LOW
Q
Any f_O, f_O/2, f_O/4, f_O/8 or f_O/16 output frequency
High impedance
Oscillator
Normal operation
Stopped
Power-saving Pull-up Resistor
The INHN pull-up resistance changes in response to the input level (HIGH or LOW). When INHN goes LOW
(standby state), the pull-up resistance becomes large to reduce the current consumption during standby.
SEIKO NPC CORPORATION —7