CFPS-31
ISSUE 2; 28 JULY 2005
Delivery Options
■
Please contact our sales office for current leadtimes
Description
■
The CFPS-31 is a 1.8V low voltage, surface mount
oscillator with a CMOS output
Output Compatibility
Tri-state CMOS
■
Drive Capability 15pF max
■
Outline in mm
5.0 max
7.5 max
0.95±0.1
Pad Connections
1. Enable/Disable
2. GND
3. Output
4. +Vs
SURFACE MOUNT
SPXOs
SURFACE MOUNT
SPXOs
Solder pads layout
Package Outline
■
7.5 x 5.0mm SMD Ceramic Package
Frequency Range
■
1.8 to 160.0MHz
1.2
1
4
2.6
5.08
2
3
1.4
2.0
1.8
Frequency Stabilities
■
±25ppm, ±50ppm, ±100ppm (inclusive of supply
voltage & output load variations over the operating
temperature range)
Operating Temperature Ranges
■
-10 to 70°C (CFPS-31)
■
-40 to 85°C (CFPS-31I)
Storage Temperature Range
■
-55 to 125°C
Tri-state Operation
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Logic ‘1’ to pad 1 enables oscillator output (> 70% Vs)
■
Logic ‘0’ to pad 1 disables oscillator output; when the
oscillator output goes to the high impedance state
(< 30% Vs)
■
No connection to pad 1 enables oscillator output
■
Standby current 10µA max
Solder Conditions
For typical soldering conditions, please see the relevant
pages in Applications Notes
Marking
■
Model Number
■
Frequency
Minimum Order Information Required
■
Frequency + Model Number + Operating Temperature
Code (if applicable) + Frequency Stability
5.08
Output Waveform
+Vs
80%Vs
t
f
t
r
50%Vs
20%Vs
t
T
Duty cycle = t x 100(%)
T
0V
■
Test Circuit - CMOS
+Vs
Frequency
Counter
A
+Vs
Power
Supply
V
Oscillator
4
3
1
2
0.1µF
Oscilloscope
15pF *
* Inclusive of jigging & equipment capacitance
Europe Tel: +44 (0)1460 270200
Americas Tel: +1 919 941 9333
Asia
Tel: +86 755 8826 5991
Fax: +44 (0)1460 72578
Fax: +1 919 941 9371
Fax: +86 755 8826 5990
Website: www.cmac.com
4.2
Electrical Specification - maximum limiting values when measured in CMOS test circuit
Frequency Range
1.8 to 32.0MHz
>32.0 to 80.0MHz ±25ppm, ±50ppm,
±100ppm
>80.0 to 125.0MHz
>125.0 to 160.0MHz
1.8V ±5%
Frequency
Stability
Supply Voltage
Supply Current
7mA
15mA
25mA
35mA
Rise Time (tr)
5.0ns
3.5ns
3.0ns
Fall Time (tf)
5.0ns
3.5ns
3.0ns
40/60%
CFPS-31
CFPS-31I
Duty Cycle
Model Number
Ordering Example
Frequency
Model Number
24.0MHz
CFPS-31
I C
SURFACE MOUNT
SPXOs
Operating Temperature Code: I = -40 to 85°C: Not applicable for -10 to 70°C
Frequency Stability: A = ±25ppm; B = ±50ppm; C = ±100ppm
Please note that the rise and fall times listed are the maximum values we specify to cover various frequency breaks.
In practise the actual values are generally lower depending upon the spot frequency chosen. For typical values please
contact our sales office.
Europe Tel: +44 (0)1460 270200
Americas Tel: +1 919 941 9333
Asia
Tel: +86 755 8826 5991
Fax: +44 (0)1460 72578
Fax: +1 919 941 9371
Fax: +86 755 8826 5990
Website: www.cmac.com
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