LTC6990CS6#TRMPBF
数据手册.pdfLINEAR TECHNOLOGY LTC6990CS6#TRMPBF 压控振荡器, TIMERBLOX系列, 6SOT-23
The is a voltage controlled 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 LTC6990"s internal master oscillator frequency. The output frequency is determined by this master oscillator and an internal frequency divider, NDIV, programmable to eight settings from 1 to 128. When the output is disabled, it is either held low or placed in a high impedance state as dictated by the Hi-Z bit value. When power is first applied to the LTC6990 the power-on reset POR circuit will initiate the start-up time. The OUT pin is floated high-impedance during this time.
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- Fixed-frequency or voltage-controlled operation
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- Single resistor programs fixed frequency with <1.5% maximum error
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- Two resistors set VCO centre frequency and tuning range
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- 488Hz to 2MHz Frequency range
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- Single-supply operation
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- 72µA Supply current at 100kHz
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- 500µs Start-up time
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- >300kHz VCO bandwidth at 1MHz
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- CMOS logic output sources/sinks 20mA
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- 50% Duty cycle square wave output
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- Output enable selectable low or Hi-Z when disabled