CFPT-9028FC1A

CFPT-9025 Series High Performance TCXO/TCVCXO ISSUE 3; 1 FEBRUARY 2006 Package Outline ■ Recommended for New Designs Delivery Options ■ 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 ■ ■ Description ■ ±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 ■ ■ ■ Temperature: see table Typical Supply Voltage Variation ±10% < ±0.2 ppm Typical Load Coefficient ±10% < ±0.1 ppm Frequency Adjustment ■ Standard Frequencies ■ 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 ■ ■ ■ ■ 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 ■ ■ ■ ■ ■ 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 ■ - Vs=5.0V Vc=2.5V±2V - Vs=3.3V Vc=1.65V±1V - Vc=0V to Vref With reference voltage Reference Voltage, Vref ■ 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 ■ 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 ■ ■ ■ 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 ■ ■ 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 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)