Micrel DSC2141
The DSC2141 and DS2241 series of programmable, high-performance oscillators with HCSL & CMOS outputs utilize a proven silicon MEMS technology to provide excellent jitter and stability while incorporating high output frequency flexibility.GENERAL DESCRIPTION
DSC2141 and DSC2241 allow the user to independently modify the frequency of each output using I2C or SPI interface, respectively. User can also select from two pre-programmed default output frequencies using the control pin. DSC2141 and DSC2241 are packaged in 14pin 3.2x2.5 mm QFN packages and available in temperature grades from Ext. Commercial to Industrial. Block Diagram Pin 14 FS Pin 13 VDD Pin 12 VDD2 Pin 1 Enable Pin 2 NC Pin 3 NC Temp. Sensor & Compensation Circuitry MEMS Oscillator PLL Divider Driver Pin 11 Output 2 Pin 10 NC Pin 9 Output 1 Pin 4 GND Pin 5 see table below Pin 6 see table below Pin 7 see table below Pin 8 Output 1 Pin # 3 5 6 7 DSC2141 (I2C) NC SDA SCL CS_bar DSC2241 (SPI) SCLK MOSI MISO SSFEATURES
● Low RMS Phase Jitter: <1 ps (typ)● High Stability: ±50 ppm
● Wide Temperature Range o Industrial: -40° to 85° C o Ext. commercial: -20° to 70° C
● High Supply Noise Rejection: -50 dBc
● Two Independent Outputs o HCSL and CMOS
● I2C/SPI Programm...