The LTC6990CS6#TRMPBF 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.
- Fixed-frequency or voltage-controlled operation
- Single resistor programs fixed frequency with <1.5% maximum error
- Two resistors set VCO centre frequency and tuning range
- 488Hz to 2MHz Frequency range
- Single-supply operation
- 72μA Supply current at 100kHz
- 500μs Start-up time
- >300kHz VCO bandwidth at 1MHz
- CMOS logic output sources/sinks 20mA
- 50% Duty cycle square wave output
- Output enable (selectable low or Hi-Z when disabled)
信号处理, 便携式器材, 电源管理
(EN)
