DAISHINKU CORPORATION : manufacturing and selling crystal devices including crystal oscillator as leading product

0 Level Voltage	The voltage condition when the output goes into Logic "0."
1 Level Voltage	The voltage condition when the output goes into Logic "1."
2520 size	This indicates the outside dimensions of the product. 2520 size indicates a product sized 2.5 by 2.0 in mm, and 3225 size indicates a product sized 3.2 by 2.5 in mm.
	The difference between the pulse height of the differential output +(positive) side and the -(negative) side of the LVDS output oscillators.
Change to Vos	The difference of the mean of the amplitude levels of the differential output +(positive) side and -(negative) side of the LVDS output oscillators.
CMOS	Abbreviation for Complementary Metal-Oxide Semiconductor.
Crystal Oscillators	An oscillator circuit that uses the characteristic vibration of a crystal resonator along with an amplifier and feedback to create an electrical signal with a very precise frequency.
Current Consumption	The amount of operating current used.
Differential Output Voltage	Refers to the pulse height of the differential output +(positive) side and -(negative) side of LVDS output oscillators.
Disable current	Current consumption when output is disabled but oscillation is still active.
ECL	Abbreviation for Emitter Coupled Logic. It is a high speed logical integrated circuit, which operates transistors in the unsaturated zone with a -(negative) power supply.
Fall Time	The time interval required for the trailing edge of a waveform to change between two defined levels.
Frequency Adjustment Range	The output frequency range which can be shifted by the control voltage from outside to VCXOs.
Frequency Characteristics over Temperature (Crystal Oscillators)	Deviation from the frequency at the specified reference temperature due to operation over the specified temperature range, when other conditions remain constant.
Frequency Control Sensitivity	The amount of frequency that can be pulled per 1V of control voltage for VCXOs. (Unit: x10-6/V)
Frequency Control Voltage	The range of input voltage from the outside for shifting the frequency of VCXOs.
Frequency Response Slope	A term used for VCXO. VCXO's output frequency, which increase with the increment in control voltage are classified in the positive (+) polarity. On the other hand, VCXO's output frequency, which decrease with the increment in control voltage are classified in the negative (-) polarity.
Frequency Stability vs. Aging	The rate of output frequency change when an oscillator is operated under a specified condition and operating time.
Frequency Stability vs. Load Variation	Deviation from the frequency at the specified load conditions due to changes in load impedance over the specified range, when other conditions remain constant.
Frequency Stability vs. Supply Voltage	Deviation from the frequency at the specified supply voltage due to operation over the specified range, when other conditions remain constant.
Frequency Tolerance (Crystal Oscillators)	The maximum permissible deviation of the oscillator frequency from a specified nominal value, when operating under specified condition.
Harmonics	Unwanted frequency component, which is higher than the desired output frequency of an oscillator.
Input Characteristics	Input conditions to control-pin for models with output control function.
Input Current	The current at "0" Level or "1" Level of the OE pin.
Input Voltage Level	The voltage condition at "0" Level or "1" Level of the OE pin.
Load capacitance	Capacitance value connected to oscillator output.
Load Condition	Types or the number (capacity) of loads that can be connected to the oscillator.
Load resistance	Resistance value connected to the oscillator output.
LVDS	Abbreviation for Low Voltage Differential Signaling. It is a high speed transmission circuit of low amplitude and differential system.
LV-PECL	Abbreviation for Low Voltage Positive Emitter Coupled Logic. It is the power optimized version of the PECL circuit.
Multiplier circuit	A circuit that multiplies the input frequency to a specific multiple frequency.
Non-multiplied output	The direct output of oscillators with non-multiplied circuit.
Offset Voltage	The mean of the amplitude level of the differential output +(positive) side and -(negative) side of the LVDS output oscillators.
Operating Temperature Range	Temperature range over which the quartz device can be operated within allowable deviation range.
Oscillation circuit	An electronic circuit which generates a sustained current signal.
Output Characteristics	Standard output waveform characteristics and measurement load conditions.
Output Disable Time	Time lag between control-signal input and oscillation output, where oscillation output is on. Specified for models with output control function.
Output Enable Time	Time lag between control-signal input and oscillation output, with oscillation output switched off (no output load). Specified for models with output control function.
Output Frequency	Nominal value of output frequency of a crystal controlled oscillator.
Output Level	Amplitude of output waveform.
Output Load	The capacity of the oscillator to drive other devices (egs. TTL, CMOS)
Output load condition (CMOS)	Capacitance value connected to CMOS oscillator output.
Output load condition (ECL)	Resistance value connected to ECL oscillator output.
Output load condition (LVDS)	Resistance value connected to LVDS oscillator output.
Output load condition (TTL)	Number of gates of TTL which can be driven by oscillator.
PECL	Abbreviation for Positive Emitter Coupled Logic. It is a high speed transmission circuit, which operates transistors in the unsaturated zone with a +(positive) power supply.
Phase Jitter	The phenomenon when the phase of the pulse wave of the output signal of an oscillator moves back and forth in time from its ideal position. It is called jitter when the frequency fluctuations of the phase in time is over 10Hz.
Phase Noise	The generic designation of the unwanted emission of energy around the nominal frequency generated by an oscillator.
PLL Output	Refers to the output of the PLL circuit based on the TCXO output signal.
Rise Time	The time interval required for the leading edge of a waveform to change between two defined levels.
Singled Package	A package which incorporates a crystal blank and an IC in one.
SMD type	Abbreviation of Surface Mounted Device. It is a generic term used to identify packages which can be mounted to the PCBs.
SPXO	An oscillator for watches, which use crystal resonance to create an electrical signal with a more precise frequency and are suitable for clock signal generators.
Standby Current	The current consumption, when the oscillator stops oscillating by the control voltage applied to the control pin of an oscillator having the output control function.
Start Up Time	The duration from the oscillation start until it reaches the specified output amplitude after power was applied.
Storage Temperature Range	Temperature range, which a quartz device should be stored at without any deterioration or damage.
Supply Voltage	The DC input voltage necessary for oscillator operation.
Symmetry	The ratio between the time, in which the output voltage is above a specified level, and time in which the output voltage is below the specified level, in percent of the duration of the full signal period.
TCXO	A high-precision crystal oscillator, which has a built-in circuit that corrects frequency variations resulting from temperature variations of the crystal resonator. It is optimal for applications where small frequency tolerance is required across a wide temperature.
TCXO Module	Refers to TCXO modules, which have a built-in sensor and multiple output ports.
TCXO Output	Refers to the output signal of the TCXO modules.
Temperature Sensor Output	A term used for TCXO modules. Refers to the DC voltage output, which changes with temperature.
Tri-state Function	The function where the output goes to a high impedance, when an oscillator stops oscillating by the standby function.
TTL	Abbreviation for Transistor-Transistor Logic. It is a logical integrated circuit (Logic IC) consisting only of bipolar transistors.
VC-TCXO	Temperature Compensated Crystal Oscillator (TCXOs) which has a function to adjust its output frequency by changing the outer voltage.
VCXO	A crystal oscillator, which has a variable-capacitance diode inserted into a SPXO oscillation loop, and enables the oscillation frequency to change by varying the voltage of the external power supply. The temperature characteristic of these oscillators are equivalent to those of the SPXO loop and takes advantage of the good attributes of crystal resonators.

0 Level Voltage

The voltage condition when the output goes into Logic "0."

1 Level Voltage

The voltage condition when the output goes into Logic "1."

2520 size

This indicates the outside dimensions of the product. 2520 size indicates a product sized 2.5 by 2.0 in mm, and 3225 size indicates a product sized 3.2 by 2.5 in mm.

The difference between the pulse height of the differential output +(positive) side and the -(negative) side of the LVDS output oscillators.

Change to Vos

The difference of the mean of the amplitude levels of the differential output +(positive) side and -(negative) side of the LVDS output oscillators.

CMOS

Abbreviation for Complementary Metal-Oxide Semiconductor.

Crystal Oscillators

An oscillator circuit that uses the characteristic vibration of a crystal resonator along with an amplifier and feedback to create an electrical signal with a very precise frequency.

Current Consumption

The amount of operating current used.

Differential Output Voltage

Refers to the pulse height of the differential output +(positive) side and -(negative) side of LVDS output oscillators.

Disable current

Current consumption when output is disabled but oscillation is still active.

ECL

Abbreviation for Emitter Coupled Logic. It is a high speed logical integrated circuit, which operates transistors in the unsaturated zone with a -(negative) power supply.

Fall Time

The time interval required for the trailing edge of a waveform to change between two defined levels.

Frequency Adjustment Range

The output frequency range which can be shifted by the control voltage from outside to VCXOs.

Frequency Characteristics over Temperature (Crystal Oscillators)

Deviation from the frequency at the specified reference temperature due to operation over the specified temperature range, when other conditions remain constant.

Frequency Control Sensitivity

The amount of frequency that can be pulled per 1V of control voltage for VCXOs. (Unit: x10-6/V)

Frequency Control Voltage

The range of input voltage from the outside for shifting the frequency of VCXOs.

Frequency Response Slope

A term used for VCXO. VCXO's output frequency, which increase with the increment in control voltage are classified in the positive (+) polarity. On the other hand, VCXO's output frequency, which decrease with the increment in control voltage are classified in the negative (-) polarity.

Frequency Stability vs. Aging

The rate of output frequency change when an oscillator is operated under a specified condition and operating time.

Frequency Stability vs. Load Variation

Deviation from the frequency at the specified load conditions due to changes in load impedance over the specified range, when other conditions remain constant.

Frequency Stability vs. Supply Voltage

Deviation from the frequency at the specified supply voltage due to operation over the specified range, when other conditions remain constant.

Frequency Tolerance (Crystal Oscillators)

The maximum permissible deviation of the oscillator frequency from a specified nominal value, when operating under specified condition.

Harmonics

Unwanted frequency component, which is higher than the desired output frequency of an oscillator.

Input Characteristics

Input conditions to control-pin for models with output control function.

Input Current

The current at "0" Level or "1" Level of the OE pin.

Input Voltage Level

The voltage condition at "0" Level or "1" Level of the OE pin.

Load capacitance

Capacitance value connected to oscillator output.

Load Condition

Types or the number (capacity) of loads that can be connected to the oscillator.

Load resistance

Resistance value connected to the oscillator output.

LVDS

Abbreviation for Low Voltage Differential Signaling. It is a high speed transmission circuit of low amplitude and differential system.

LV-PECL

Abbreviation for Low Voltage Positive Emitter Coupled Logic. It is the power optimized version of the PECL circuit.

Multiplier circuit

A circuit that multiplies the input frequency to a specific multiple frequency.

Non-multiplied output

The direct output of oscillators with non-multiplied circuit.

Offset Voltage

The mean of the amplitude level of the differential output +(positive) side and -(negative) side of the LVDS output oscillators.

Operating Temperature Range

Temperature range over which the quartz device can be operated within allowable deviation range.

Oscillation circuit

An electronic circuit which generates a sustained current signal.

Output Characteristics

Standard output waveform characteristics and measurement load conditions.

Output Disable Time

Time lag between control-signal input and oscillation output, where oscillation output is on. Specified for models with output control function.

Output Enable Time

Time lag between control-signal input and oscillation output, with oscillation output switched off (no output load). Specified for models with output control function.

Output Frequency

Nominal value of output frequency of a crystal controlled oscillator.

Output Level

Amplitude of output waveform.

Output Load

The capacity of the oscillator to drive other devices (egs. TTL, CMOS)

Output load condition (CMOS)

Capacitance value connected to CMOS oscillator output.

Output load condition (ECL)

Resistance value connected to ECL oscillator output.

Output load condition (LVDS)

Resistance value connected to LVDS oscillator output.

Output load condition (TTL)

Number of gates of TTL which can be driven by oscillator.

PECL

Abbreviation for Positive Emitter Coupled Logic. It is a high speed transmission circuit, which operates transistors in the unsaturated zone with a +(positive) power supply.

Phase Jitter

The phenomenon when the phase of the pulse wave of the output signal of an oscillator moves back and forth in time from its ideal position. It is called jitter when the frequency fluctuations of the phase in time is over 10Hz.

Phase Noise

The generic designation of the unwanted emission of energy around the nominal frequency generated by an oscillator.

PLL Output

Refers to the output of the PLL circuit based on the TCXO output signal.

Rise Time

The time interval required for the leading edge of a waveform to change between two defined levels.

Singled Package

A package which incorporates a crystal blank and an IC in one.

SMD type

Abbreviation of Surface Mounted Device. It is a generic term used to identify packages which can be mounted to the PCBs.

SPXO

An oscillator for watches, which use crystal resonance to create an electrical signal with a more precise frequency and are suitable for clock signal generators.

Standby Current

The current consumption, when the oscillator stops oscillating by the control voltage applied to the control pin of an oscillator having the output control function.

Start Up Time

The duration from the oscillation start until it reaches the specified output amplitude after power was applied.

Storage Temperature Range

Temperature range, which a quartz device should be stored at without any deterioration or damage.

Supply Voltage

The DC input voltage necessary for oscillator operation.

Symmetry

The ratio between the time, in which the output voltage is above a specified level, and time in which the output voltage is below the specified level, in percent of the duration of the full signal period.

TCXO

A high-precision crystal oscillator, which has a built-in circuit that corrects frequency variations resulting from temperature variations of the crystal resonator. It is optimal for applications where small frequency tolerance is required across a wide temperature.

TCXO Module

Refers to TCXO modules, which have a built-in sensor and multiple output ports.

TCXO Output

Refers to the output signal of the TCXO modules.

Temperature Sensor Output

A term used for TCXO modules. Refers to the DC voltage output, which changes with temperature.

Tri-state Function

The function where the output goes to a high impedance, when an oscillator stops oscillating by the standby function.

TTL

Abbreviation for Transistor-Transistor Logic. It is a logical integrated circuit (Logic IC) consisting only of bipolar transistors.

VC-TCXO

Temperature Compensated Crystal Oscillator (TCXOs) which has a function to adjust its output frequency by changing the outer voltage.

VCXO

A crystal oscillator, which has a variable-capacitance diode inserted into a SPXO oscillation loop, and enables the oscillation frequency to change by varying the voltage of the external power supply. The temperature characteristic of these oscillators are equivalent to those of the SPXO loop and takes advantage of the good attributes of crystal resonators.