LTC6903HMS8#PBF Analog Devices

LTC6903/LTC6904 1kHz to 68MHz Serial Port Programmable Oscillator Fea T Descrip T n 1kHz to 68MHz Square Wave Output The LTC 6903/LTC6904 are low power self contained digital n 0.5% (Typ) Initial Frequency Accuracy frequency sources providing a precision frequency from n Frequency Error <1.1% Over All Settings 1kHz to 68MHz, set through a serial port. The LTC6903/ n 10ppm/C Typical Frequency Drift Over LTC6904 require no external components other than a Temperature power supply bypass capacitor, and they operate over a n 0.1% Resolution single wide supply range of 2.7V to 5.5V. n 1.7mA Typical Supply Current (f < 1MHz, V = 2.7V) S The LTC6903/LTC6904 feature a proprietary feedback loop n 2.7V to 5.5V Single- Supply Operation that linearizes the relationship between digital control set- n Jitter <0.4% Typical 1kHz to 8MHz ting and frequency, resulting in a very simple frequency 2 n Easy to Use SPI (LTC6903) or I C (LTC6904) Serial setting equation: Interface n Output Enable Pin 2078()Hz OCT f =2 16kHzf<< 8MHz n 55C to 125C Operation DAC 2 n MS8 Package 1024 where OCT is a 4-bit digital code and DAC is a 10-bit a T digital code. n Precision Digitally Controlled Oscillator The LTC6903 is controlled by a convenient SPI compatible n Power Management serial interface. The LTC6904 uses an industry standard n Direct Digital Frequency Synthesis (DDS) 2 I C compatible interface. Replacement L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and n Replacement for DAC and VCO ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 6342817 and 6614313. n Switched Capacitor Filter Clock Typical a T LTC6903 Frequency Error A Microcontroller Controlling Its Clock Distribution 40 V = 3V S T = 25C 5V A f = 1039Hz 443 + GND V 30 MICROCONTROLLER UNITS TESTED OSC1/CLKIN SDI OE OSC2/CLKOUT 10k RC5/SDO 20 MCLR/V LTC6903 PP 10 SCK CLK RC3/SCK/SCL 1F RC2/CCP1 5V V DD 10 SEN CLK V SS 0.1F 0.01F V SS POWER-UP CLOCK PIC16F73 0 FREQUENCY IS 1039Hz 1.0 0.5 0 0.5 1.0 69034 TA01 FREQUENCY ERROR (%) 69034 TA01b 69034fe 1 UNITS ion pplica ions pplica ion uresLTC6903/LTC6904 a T e Maxi Mu M r a T p c F T (Note 1) + Total Supply Voltage (V to GND) ................................6V TOP VIEW + Maximum Voltage GND 1 8 V SDI 2 7 OE + on any Pin ............. (GND 0.3V) V (V + 0.3V) PIN SCK 3 6 CLK SEN/ADR* 4 5 CLK Output Short-Circuit Duration (Note 2) ............ Indefinite MS8 PACKAGE Operating Temperature Range (Note 3) 8-LEAD PLASTIC MSOP LTC6903CMS8/LTC6904CMS8 ............40C to 85C T = 150C, = 200C/W JMAX JA *SEN (LTC6903) LTC6903IMS8/LTC6904IMS8 ..............40C to 85C ADR (LTC6904) LTC6903HMS8/LTC6904HMS8 ......... 40C to 125C LTC6904MPMS8 ............................... 55C to 125C Specified Temperature Range (Note 4) LTC6903CMS8/LTC6904CMS8 ................ 0C to 70C LTC6903IMS8/LTC6904IMS8 ..............40C to 85C LTC6903HMS8/LTC6904HMS8 ......... 40C to 125C LTC6904MPMS8 ............................... 55C to 125C Storage Temperature Range .................. 65C to 150C Lead Temperature (Soldering, 10 sec) ...................300C o r D i n F Ma T LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION SPECIFIED TEMPERATURE RANGE LTC6903CMS8 PBF LTC6903CMS8 TRPBF LTABN 8-Lead Plastic MSOP 0C to 70C LTC6903IMS8 PBF LTC6903IMS8 TRPBF LTABN 8-Lead Plastic MSOP 40C to 85C LTC6903HMS8 PBF LTC6903HMS8 TRPBF LTABN 8-Lead Plastic MSOP 40C to 125C LTC6904CMS8 PBF LTC6904CMS8 TRPBF LTAES 8-Lead Plastic MSOP 0C to 70C LTC6904IMS8 PBF LTC6904IMS8 TRPBF LTAES 8-Lead Plastic MSOP 40C to 85C LTC6904HMS8 PBF LTC6904HMS8 TRPBF LTAES 8-Lead Plastic MSOP 40C to 125C LTC6904MPMS8 PBF LTC6904MPMS8 TRPBF LTFDX 8-Lead Plastic MSOP 55C to 125C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Consult LTC Marketing for information on non-standard lead based finish parts. For more information on lead free part marking, go to: