CFPT-9025 Series High Performance TCXO/TCVCXO
ISSUE 3; 1 FEBRUARY 2006
Package Outline
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Recommended for New Designs
Delivery Options
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Low Profile, 7.6 x 9.3 x 3.2 mm SMD package with High
Temperature Co-fired Ceramic base and metal cover
Please contact our sales office for current leadtimes
Ageing
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Description
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±1ppm maximum in first year
±5ppm maximum for 10 years
The CFPT-9025 series of temperature compensated
crystal oscillators provide for ultra high stabilities down
to ±0.3ppm and operating temperature ranges as wide as
–55 to +125°C. The oscillator uses C-MAC’s latest custom
ASIC "Pluto", a single chip oscillator and analogue
compensation circuit. Due to its unique mechanical
construction the CFPT-9025 series is able to withstand
20,000 G’s acceleration, which makes it the TCXO of
choice for gun hardened GPS navigation systems
Frequency Stability
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Temperature: see table
Typical Supply Voltage Variation ±10% < ±0.2 ppm
Typical Load Coefficient ±10%
< ±0.1 ppm
Frequency Adjustment
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Standard Frequencies
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Three options with external Control Voltage applied to
pad 1:
A - Ageing adjustment: > ±5ppm (Standard Option)
B - No frequency adjustment initial calibration @ 25°C
< ±0.5 ppm
SURFACE MOUNT
TCXOs
9.6, 10.0, 11.68, 12.504, 12.8, 13.0, 14.4, 16.3676, 19.44,
20.0, 21.73875, 24.5535, 38.88, 40.96, 47.032, 49.152,
51.84 MHz
Non-standard Frequencies in the range 1.0 MHz to 75.0 MHz
(see table) are available on request, contact sales office.
Output Waveform
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C - High Pulling ±10ppm to ±50ppm and non-standard
control voltage ranges may be available depending
on frequency and stability options. Please consult
our sales office
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Square HCMOS 15pF load
Square ACMOS 50pF max. load
Sinewave >1.0pk-pk, 10kΩ // 10pF load
Clipped sinewave >0.81Vpk-pk, 10kΩ // 10pF load
Linearity
Slope
Input resistance
Modulation bandwidth
Standard control voltage ranges:
Without reference voltage
Without reference voltage
< 1%
Positive
> 100kΩ
> 2kHz
Sinewave and clipped sinewave signals are superimposed
on a DC offset, to remove this offset insert an external
coupling capacitor in series with the output
Supply Voltage
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- Vs=5.0V Vc=2.5V±2V
- Vs=3.3V Vc=1.65V±1V
- Vc=0V to Vref
With reference voltage
Reference Voltage, Vref
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3.3 and 5.0V, see table, non-standard supply voltages in
the range 2.4 to 6.0V are available on request, contact
sales office
Current Consumption
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Optional reference voltage output on pad 2, suitable for
potentiometer supply or DAC reference.
1. No output (Standard option)
2. 2.2V, for Min. Vs>2.4V
3. 2.75V, for Min. Vs>3.0V
4. 4.2V, for Min. Vs>4.5V
Maximum load current 100µA
HCMOS Typically
≈
1+Frequency(MHz)*Supply(V)*{Load(pF)+15}*10
-3
mA
E. g. 20MHz, 5V, 15pF
≈
4mA
ACMOS Typically
≈
1+Frequency(MHz)*Supply(V)*{Load(pF)+23}*10
-3
mA
Sinewave < 8 mA
Clipped Sinewave Typically
≈
1+Frequency(MHz)*1.2*{Load(pF)+30}*10
-3
mA
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For manual frequency adjustment connect an external
50kΩ potentiometer between pad 2 (Reference Voltage)
and pad 3 (Ground) with wiper connected to pad 1
(Voltage Control). Please specify reference voltage as a
part of the ordering code
Tri-state
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Outline in mm
Pad 5 open circuit or >0.6Vs output enabled
Pad 5 < 0.2Vs Tri-state
9.3 max
Pad Connections
1. Voltage Control*
2. Vref*
3. GND
4. Output
5. Tri-state Control (Enable)*
6. +Vs
*Leave unconnected if
not required
When Tri-stated, the output stage is disabled for all output
options, but the oscillator and compensation circuit are
still active (Current consumption <1mA)
Storage Temperature Range
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–55 to 125°C
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C-MAC
Pin 1 / Static sensitivity identifier (Triangle)
Part Number (E and Four digits)
Device date code / Location (YWL)
0.81 (x6)
±0.15
2.03
±0.15
CMAC YWL
∆
E2795
1
2
3
Environmental Specification
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6
5
4
SURFACE MOUNT
TCXOs
To be discussed on an individual basis, contact sales
office
5.08
Minimum Order Information Required
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Output Waveform - HCMOS
t
f
90% (VoH-VoL)
t
r
+Vs
VoH
Frequency + Model Number + Frequency Stability vs
Operating Temperature Range Code + Reference Voltage
Code + Frequency Adjustment Code
OR
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Discrete part number for repeat orders
50% (VoH-VoL)
Please supply full information for non-standard options, if
required
1.52 (x5)
±0.15
3.2 max
Marking Includes
7.6 max
10% (VoH-VoL)
VoL
0V
t
T
260°C max
Reflow Solder Profile
Temperature
260
220
180
150
120
50k
Ω
Duty cycle = t x 100(%)
T
Test Circuit
0
120sec
max
10sec
60sec max
Time
Voltage
Control
1
6
Vs
100nF
2
3
5
4
100nF
Output
Tri-state
control
C
L
360 sec max.
Phase Noise (typical figures)
Frequency
13.0MHz
25.0MHz
50.0MHz
Frequency offset from
carrier: 10Hz
–95 dBc/Hz
–85 dBc/Hz
–75 dBc/Hz
Frequency offset from
carrier: 100Hz
–120 dBc/Hz
–110 dBc/Hz
–100 dBc/Hz
Frequency offset from
carrier: 1kHz
–135 dBc/Hz
–125 dBc/Hz
–120 dBc/Hz
Frequency offset from
carrier: 10kHz
–140 dBc/Hz
–135 dBc/Hz
–130 dBc/Hz
Frequency offset from
carrier: 100kHz
–145 dBc/Hz
–140 dBc/Hz
–135 dBc/Hz
Electrical Specification - limiting values when measured in test circuit
Frequency Range
1.0 to 50.0MHz
Supply Voltage
3.3V±10%
Output Waveform
Square HCMOS
15pF
1.0 to 50.0MHz
5.0V±10%
Square HCMOS
15pF
8.0 to 50.0MHz
8.0 to 50.0MHz
1.0 to 75.0MHz
1.0 to 75.0MHz
8.0 to 50.0MHz
8.0 to 50.0MHz
3.3V±10%
5.0V±10%
3.3V±10%
5.0V±10%
3.3V±10%
5.0V±10%
Sine 10k //10pF
Sine 10k //10pF
Square ACMOS
15pF
Square ACMOS
15pF
Clipped Sinewave
10k //10pF
Clipped Sinewave
10k //10pF
Output levels
Voh > 90% Vs
Vol < 10% Vs
Voh > 90% Vs
Vol < 10% Vs
Vpk-pk > 1V
Vpk-pk > 1V
Voh > 90% Vs
Vol < 10% Vs
Voh > 90% Vs
Vol < 10% Vs
Vpk-pk > 0.8V
Vpk-pk > 0.8V
3ns
2ns
—
—
—
—
3ns
2ns
—
—
45/55%
45/55%
—
—
CFPT-9028
CFPT-9029
CFPT-9030
CFPT-9031
CFPT-9032
CFPT-9033
SURFACE MOUNT
TCXOs
Rise Time(tr)
8ns
Fall Time (tf)
8ns
Duty Cycle
45/55%
Model Number
CFPT-9026
7ns
7ns
45/55%
CFPT-9027
Frequency Stability Available Over Operating Temperature Ranges
Operating
Temperature
Ranges
0 to 50°C
0 to 70°C
–20 to 70°C
–30 to 75°C
–40 to 85°C
–55 to 95°C
–55 to 125°C
Ordering Example
Frequency
Model number
Frequency Stability Vs Operating Temperature Code
Reference Voltage Code
Frequency Adjustment Code
10.0MHz
CFPT-9026 CS 1 A
Frequency Stabilities Vs Operating Temperature Range
±0.3ppm
Code AP
Code AC
Code AS*
±0.5ppm
Code EP
Code EC
Code ES
Code EU
Code EX*
±1.0ppm
Code FP
Code FC
Code FS
Code FU
Code FX
Code FA*
±1.5ppm
Code CP
Code CC
Code CS
Code CU
Code CX
Code CA
±2.0ppm
Code GP
Code GC
Code GS
Code GU
Code GX
Code GA
Code GZ*
±2.5ppm
Code HP
Code HC
Code HS
Code HU
Code HX
Code HA
Code HZ
(For reference voltage and frequency adjustment codes see main text)
Note:* Codes may not be available for all frequencies; stability of ±3ppm over -40 to 110°C is available as code ‘JY’ (e.g. 44.0MHz CFPT-9030-JY-1B)
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