CFPS-37
ISSUE 2; 12 DECEMBER 2005
Delivery Options
■
Please contact our sales office for current leadtimes
Description
■
The CFPS-37 is a 2.5V surface mount, low voltage oscillator
with
a CMOS output
Output Compatibility
Tri-state CMOS
■
Drive Capability 15pF max
■
Outline in mm
5.0±0.2
4
3.2±0.2
3
Pad Connections
1. Enable/Disable
2. GND
3. Output
4. +Vs
1
0.95±0.1
2
SURFACE MOUNT
SPXOs
Solder pad layout
1.0
1.5
1.0
1.1
1.4
1.4
1.4
0.15
1.1
Package Outline
■
5.0 x 3.2mm SMD Ceramic Package
Frequency Range
■
1.8 to 125.0MHz
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-37)
■
-40 to 85°C (CFPS-37I)
Storage Temperature Range
■
-55 to 125°C
Tri-state Operation
■
Logic ‘1’ to pad 1 enables oscillator output (>70%Vs)
■
Logic ‘0’ to pad 1 disables oscillator; when disabled
the oscillator goes to the high impedance state (<30%Vs)
■
No connection to pad 1 enables oscillator output
■
Stand-by Current 10µA
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
Output Waveform
t
f
t
r
+Vs
90%Vs
50%Vs
10%Vs
T
Duty cycle = t x 100(%)
T
0V
t
Test Circuit - CMOS
Frequency
Counter
A
+Vs
Power
Supply
V
+Vs
Oscillator
4
3
1
2
0.1µF
* 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
1.4
Oscilloscope
15pF *
Electrical Specification - maximum limiting values when measured in CMOS test circuit
Frequency
Stability
Frequency Range
Supply Voltage
Supply Current
Rise Time (tr)
Fall Time (tf)
Duty Cycle
Model Number
1.8 to 32.0MHz
±25ppm*, ±50ppm,
>32.0 to 80.0MHz
±100ppm
>80.0 to 125.0MHz
2.5V±5%
10mA
5.0ns
18mA
5.0ns
45/55%
CFPS-73
CFPS-37I
40/60%
4.0ns
4.0ns
SURFACE MOUNT
SPXOs
28mA
Ordering Example
Frequency
Model No
24.0MHz
CFPS-37
I
C
Operating Temperature Code: I = -40 to 85°C: Not applicable for -10 to 70°C
Frequency Stability: A = ±25ppm, B = ±50ppm, C = ±100ppm
*Note - Code IA, ±25ppm over -40 to 85°C is not available
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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