CFPT-9025 Series High Performance TCXO/TCVCXO
Recommended for New Designs
Package Outline
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Delivery Options
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Please contact our sales office for current leadtimes
Description
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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
Ageing
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±1ppm maximum in first year
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±5ppm maximum for 10 years
Frequency Stability
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Temperature: see table
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Typical Supply Voltage Variation ±10% < ±0.2 ppm
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Typical Load Coefficient ±10%
Standard Frequencies
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
A - Ageing adjustment: > ±5ppm (Standard Option)
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
Output Waveform
Square HCMOS 15pF load
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Square ACMOS 50pF max. load
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Sinewave >1.0pk-pk, 10kΩ // 10pF load
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Clipped sinewave >0.81Vpk-pk, 10kΩ // 10pF load
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
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Linearity
< 1%
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Slope
Positive
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Input resistance
> 100kΩ
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Modulation bandwidth
> 2kHz
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Standard control voltage ranges:
Supply Voltage
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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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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
Three options with external Control Voltage applied to
pad 1:
B - No frequency adjustment initial calibration @ 25°C
< ±0.5 ppm
Non-standard Frequencies in the range 1.0 MHz to 75.0 MHz
(see table) are available on request, contact sales office.
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< ±0.1 ppm
Frequency Adjustment
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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
Without reference voltage
- Vs=5.0V Vc=2.5V±2V
Without reference voltage
- Vs=3.3V Vc=1.65V±1V
With reference voltage
- Vc=0V to Vref
Reference Voltage, Vref
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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
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
SURFACE MOUNT
TCXOs
ISSUE 3; 1 FEBRUARY 2006
Tri-state
Outline in mm
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Pad 5 open circuit or >0.6Vs output enabled
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Pad 5 < 0.2Vs Tri-state
9.3 max
Storage Temperature Range
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–55 to 125°C
Pin 1 / Static sensitivity identifier (Triangle)
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Part Number (E and Four digits)
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Device date code / Location (YWL)
0.81 (x6)
±0.15
CMAC YWL
2.03
±0.15
∆ E2795
1
Environmental Specification
SURFACE MOUNT
TCXOs
6
To be discussed on an individual basis, contact sales
office
Minimum Order Information Required
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2
3
5
4
5.08
Output Waveform - HCMOS
Frequency + Model Number + Frequency Stability vs
Operating Temperature Range Code + Reference Voltage
Code + Frequency Adjustment Code
tf
tr
+Vs
90% (VoH-VoL)
OR
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1.52 (x5)
±0.15
C-MAC
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3.2 max
Marking Includes
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Pad Connections
1. Voltage Control*
2. Vref*
3. GND
4. Output
5. Tri-state Control (Enable)*
6. +Vs
*Leave unconnected if
not required
7.6 max
When Tri-stated, the output stage is disabled for all output
options, but the oscillator and compensation circuit are
still active (Current consumption <1mA)
VoH
Discrete part number for repeat orders
Please supply full information for non-standard options, if
required
50% (VoH-VoL)
10% (VoH-VoL)
VoL
0V
t
Reflow Solder Profile
T
Temperature
Duty cycle = t x 100(%)
T
260°C max
260
Test Circuit
220
180
150
120
0
50k Ω
120sec
max
10sec
60sec max
Time
Voltage
Control
1
2
6
5
4
100nF
Vs
3
Output
360 sec max.
100nF
Tri-state
control
CL
Phase Noise (typical figures)
Frequency
Frequency offset from
carrier: 10Hz
Frequency offset from
carrier: 100Hz
Frequency offset from
carrier: 1kHz
Frequency offset from
carrier: 10kHz
Frequency offset from
carrier: 100kHz
13.0MHz
–95 dBc/Hz
–120 dBc/Hz
–135 dBc/Hz
–140 dBc/Hz
–145 dBc/Hz
25.0MHz
–85 dBc/Hz
–110 dBc/Hz
–125 dBc/Hz
–135 dBc/Hz
–140 dBc/Hz
50.0MHz
–75 dBc/Hz
–100 dBc/Hz
–120 dBc/Hz
–130 dBc/Hz
–135 dBc/Hz
Frequency Range
Supply Voltage
Output Waveform
Output levels
Rise Time(tr)
Fall Time (tf)
Duty Cycle
Model Number
1.0 to 50.0MHz
3.3V±10%
Square HCMOS
Voh > 90% Vs
8ns
8ns
45/55%
CFPT-9026
15pF
Vol < 10% Vs
Square HCMOS
Voh > 90% Vs
7ns
7ns
45/55%
CFPT-9027
15pF
Vol < 10% Vs
1.0 to 50.0MHz
5.0V±10%
8.0 to 50.0MHz
3.3V±10%
Sine 10k //10pF
Vpk-pk > 1V
—
—
CFPT-9028
8.0 to 50.0MHz
5.0V±10%
Sine 10k //10pF
Vpk-pk > 1V
—
—
CFPT-9029
1.0 to 75.0MHz
3.3V±10%
Square ACMOS
15pF
Voh > 90% Vs
Vol < 10% Vs
3ns
45/55%
CFPT-9030
1.0 to 75.0MHz
5.0V±10%
Square ACMOS
15pF
Voh > 90% Vs
Vol < 10% Vs
2ns
45/55%
CFPT-9031
8.0 to 50.0MHz
3.3V±10%
Clipped Sinewave
10k //10pF
Vpk-pk > 0.8V
—
—
CFPT-9032
8.0 to 50.0MHz
5.0V±10%
Clipped Sinewave
10k //10pF
Vpk-pk > 0.8V
—
—
CFPT-9033
3ns
2ns
Frequency Stability Available Over Operating Temperature Ranges
Operating
Temperature
Ranges
Frequency Stabilities Vs Operating Temperature Range
±0.3ppm
±0.5ppm
±1.0ppm
±1.5ppm
±2.0ppm
±2.5ppm
0 to 50°C
Code AP
Code EP
Code FP
Code CP
Code GP
Code HP
0 to 70°C
Code AC
Code EC
Code FC
Code CC
Code GC
Code HC
–20 to 70°C
Code AS*
Code ES
Code FS
Code CS
Code GS
Code HS
–30 to 75°C
Code EU
Code FU
Code CU
Code GU
Code HU
–40 to 85°C
Code EX*
Code FX
Code CX
Code GX
Code HX
Code FA*
Code CA
Code GA
Code HA
Code GZ*
Code HZ
–55 to 95°C
–55 to 125°C
Ordering Example
10.0MHz
CFPT-9026 CS 1 A
Frequency
Model number
Frequency Stability Vs Operating Temperature Code
Reference Voltage Code
Frequency Adjustment Code
(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)
SURFACE MOUNT
TCXOs
Electrical Specification - limiting values when measured in test circuit