RFPT200 Datasheet, PDF (1/7 Pages) TEMEX – The CHARON is a SPI controlled high accuracy TCXO with embedded timer and alarm function

RFPT200
-------
The CHARON is a SPI controlled high accuracy TCXO with embedded timer and alarm
function.
-------
-------
The Charon is a high stability 7x5 SMD Digitally Controlled Temperature Controlled
Crystal Oscillator (DCTCXO) designed and specified to bring together the highest
stability TCXO performance with digital frequency control, separate low frequency
output, timer and alarm functionality.
-------
Product description
-------
Serial Peripheral Interface (SPI) controlled high accuracy TCXO with embedded timer and
alarm function. Using Rakon’s advanced Pluto™ analogue frequency compensation system,
the DCTCXO achieves unrivalled frequency stability. A custom ASIC, Charon (Pluto’s moon)
has been designed to closely interface with the Pluto™ ASIC to provide the extra enhanced
functionality in a miniature 7x5 SMD package. In addition to market leading stability the
Charon device features integrated timing and control functions. A low frequency timing pulse
is derived from a programmable division ratio of the high stability oscillator. This drives the
onboard 32 bit timer, which coupled to a 32 bit programmable comparator and alarm
circuitry, enables a system to enter a low power standby mode and be woken at a precise
time in the future. All digital control is via a standard 4-wire SPI interface.
-------
Applications
• Military
• Other
-------
Features
• 32 bit timer
• 32 bit comparator with alarm output
• Low frequency timing pulse
• Digital frequency adjustment
• Low power standby mode
-------
Specifications
-----
1.0
Line
1.1
1.2
1.3
SPECIFICATION REFERENCES
Parameter
Description
Model description
RFPT200 'Charon'
RoHS compliant
Available on request
Package size available 7.0 mm x 5.0 mm x 2.8 mm
-----
2.0
Line
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
FREQUENCY CHARACTERISTICS
Parameter
Test Condition
Frequency range
Frequency range available depends on output type (Note 1)
Frequency calibration At 25°C at mid-range of DAC, reference nominal frequency
Frequency stability
over temperature
Reference to (Fmax+Fmin)/2. Max ±0.15 ppm only available over
-20°C to 70°C (Note 2)
Temperature range
The operating temperature range over which the frequency
stability is measured (Note 3)
Stability vs. supply
voltage changes
±5% variation in supply voltage.
Nominal value ±0.1 ppm
Stability vs. load
changes
±10% variation in load.
Nominal value ±0.1 ppm
Long term stability
At 25°C, first year.
Nominal value ±1 ppm
Long term stability
At 25°C, 10 years predicted, including first year.
Nominal value ±3 ppm
Drift due to reflow
soldering
At 25°C, at mid-range of DAC, 24 hours after reflow.
-----
Value
3 to 40
±0.5 to 1
±0.15 to 2
-55 to 95
±0.05 to
0.2
±0.05 to
0.2
±0.5 to 2
±2 to 5
±0.5 to 1
Unit
MHz
ppm
ppm
°C
ppm
ppm
ppm
ppm
ppm
Page 1