LTC6990MPS6#TRMPBF

LTC6990MPS6#TRMPBF is a precision silicon oscillator with a programmable frequency range of 488Hz to 2MHz. It can be used as a fixed-frequency or voltage-controlled oscillator (VCO). The LTC6990 is part of the TimerBlox® family of versatile silicon timing devices. A single resistor, RSET, programs the device’s internal oscillator frequency. The output frequency is determined by this oscillator and an internal frequency divider, NDIV, programmable to eight settings from 1 to 128. Optionally, a second resistor at the SET input provides linear voltage control of the output frequency and can be used for frequency modulation. A narrow or wide VCO tuning range can be configured by the appropriate selection of the two resistors. It is used in applications such as low cost precision programmable oscillator, voltage-controlled oscillator, high vibration, high acceleration environments, replacement for fixed crystal and ceramic oscillators, portable and battery-powered equipment.

• CMOS logic output sources/sinks 20mA
• 50% duty cycle square wave output
• Output enable (selectable low or Hi-Z when disabled)
• Output frequency range from 0.488 to 1000KHz (TA = 25°C, recommended range: RSET = 50K to 800K)
• Frequency drift over temperature is ±0.005%/°C typical (TA = 25°C)
• Duty cycle is 50% typical (NDIV = 1, RSET = 25k to 800k, TA = 25°C)
• Frequency modulation bandwidth is 0.4KHz (fOUT, TA = 25°C)
• Frequency-setting resistor range from 50 to 800Kohm (TA = 25°C)
• Operating supply voltage range from 2.25 to 5.5V (TA = 25°C)
• 6-lead plastic TSOT-23 package, temperature range from -55°C to 125°C

Uwagi

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