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PDF CF5035 Data sheet ( Hoja de datos )
| Número de pieza | CF5035 | |
| Descripción | High-frequency Crystal Oscillator Module ICs | |
| Fabricantes | Nippon Precision Circuits | |
| Logotipo |  |
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CF5035 series
1.8V, High-frequency Crystal Oscillator Module ICs
OVERVIEW
The CF5035 series are 1.8V operation, high-frequency crystal oscillator module ICs. They support 70MHz to
165MHz (1.8V) and 70MHz to 220MHz (2.5 to 3.3V) 3rd overtone oscillation and fundamental oscillation
www.DataSheet4U.cmomodes. The crystal oscillator circuit is a Colpitts oscillator with the necessary oscillator capacitors and feed-
back resistor built-in. The oscillation characteristics feature little variation with supply voltage, providing sta-
ble oscillation over a wide supply voltage range. The output circuit comprises a CMOS buffer that can operate
at high frequencies and drive a 15pF capacitance load. The devices are fabricated using a proprietary BiCMOS
process with the oscillator circuit and output buffer on a single chip, making them ideal as SMD-type high-fre-
quency crystal oscillators.
FEATURES
I 1.6 to 3.6V operating supply voltage range
I Oscillation frequency range (varies with version)
1.6 to 3.6V: 70MHz to 165MHz
2.25 to 3.6V: 70MHz to 220MHz
I – 40 to 85°C operating temperature range
I Oscillation capacitors built-in
I Inverter amplifier feedback resistor built-in
I Oscillation detector function built-in
I Standby function
• High impedance in standby mode, oscillator stops
I Low standby current
• Power-saving pull-up resistor built-in
I CMOS output duty level
I 15pF output load
I 8mA output drive capability (VDD = 1.6V)
I BiCMOS process
I Chip form (CF5035AL×)
APPLICATIONS
I 1.8V, high-frequency crystal oscillator modules
SERIES CONFIGURATION
Version
CF5035ALA
Operating supply Recommended operating
voltage range [V] frequency range1 [MHz]
70 to 95
Built-in capacitance [pF]
CIN COUT
44
CF5035ALB
1.6 to 3.6
95 to 125
4
4
CF5035ALC
125 to 165
2
2
CF5035ALD
2.25 to 3.6
165 to 220
1
1
1. The recommended operating frequency is a yardstick value derived from the crystal used for NPC characteristics authentica-
tion. However, the oscillator frequency band is not guaranteed. Specifically, the characteristics can vary greatly due to crystal
characteristics and mounting conditions, so the oscillation characteristics of components must be carefully evaluated.
ORDERING INFORMATION
Device
CF5035AL×–1
Package
Chip form
SEIKO NPC CORPORATION —1
1 page  
CF5035 series
AC Characteristics
Recommended operating conditions unless otherwise noted.
Parameter
Symbol
Condition
Rating
min typ max
Unit
Output duty cycle
Duty
Measurement cct 1, Ta = 25°C,
CL = 15pF
VDD = 2.25 to 3.6V
VDD = 1.6 to 2.25V
45
40
50
50
55
60
%
%
Rise time
www.DataSheet4U.com
tr1
Measurement cct 1, CL = 15pF, VDD = 2.25 to 3.6V,
0.1VDD to 0.9VDD
tr2
Measurement cct 1, CL = 15pF, VDD = 1.6 to 2.25V,
0.2VDD to 0.8VDD
– 1 2 ns
– 1.5 2.5 ns
Fall time
tf1
Measurement cct 1, CL = 15pF, VDD = 2.25 to 3.6V,
0.9VDD to 0.1VDD
tf2
Measurement cct 1, CL = 15pF, VDD = 1.6 to 2.25V,
0.8VDD to 0.2VDD
– 1 2 ns
– 1.5 2.5 ns
Output enable delay time1
tOE
Measurement cct 2, Ta = 25°C, CL ≤ 15pF,
INHN = LOW → HIGH
– – 2 ms
Output disable delay time
tOD
Measurement cct 2, Ta = 25°C, CL ≤ 15pF,
INHN = HIGH → LOW
– – 200 ns
1. 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.
Timing chart
0.9VDD
0.8VDD
0.2VDD
0.1VDD
tr2
tr1
0.9VDD
0.8VDD
TW
0.2VDD
0.1VDD
T
tf2
tf1
Q
DUTY measurement
voltage (0.5V DD)
DUTY= TW/ T 100 (%)
Figure 1. Output switching waveform
INHN
Q
VIL
tOD
VIH
tOE
Hi-Z
Figure 2. Output disable/enable timing chart
SEIKO NPC CORPORATION —5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet CF5035.PDF ] | |
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