LTC6930 - 32.768kHz to 8.192MHz Precision µPower Oscillators

 
99.91% Accurate Silicon Oscillator
The LTC6930 family of low power precision silicon oscillators with fixed frequencies from 32.768 kHz to 8.192 MHz. Five versions are available, each with a unique master frequency and digitally controlled frequency dividers that give 8 different frequencies per device. Frequency shifting is accomplished within a single clock cycle and without glitches, providing a powerful tool for system configuration or power management through clock-speed control. The LTC6930 has significant advantages in battery and portable applications.

Drawing only 105µA at 32 kHz and requiring only a single 1.7V to 5.5V supply, the LTC6930 can operate from two unregulated NiCad batteries. Battery life is also extended, using the fast startup, where minimal power is lost during the clock power-up. Most oscillators exhibit a startup time greater than a millisecond. By contrast, the LTC6930 has a guaranteed startup time of less than 110usec. The 0.09% frequency tolerance makes the LTC6930 suitable for many applications, including serial port communications and microprocessor clocks. The LTC6930 is fully specified for operation from -40°C to 125°C and offers rugged, reliable operation in environments unsuitable for crystal-based oscillators. These parts are available in a compact 2x3mm DFN and an 8-lead MSOP package.        Typical Application        Absolute Maximum Ratings        Pin Configuration        Datasheet

 
 Features
 
  Frequency Error <0.09% Max at 25°C
  Startup Time <110µs at All Frequencies
  1.7V to 5.5V Single Supply Operation
  105µA Typical Supply Current at 32kHz, V+ = 3V
  490µA Typical Supply Current at 8MHz, V+ = 3V
  Typical RMS Period Jitter <0.15% at V+ = 3V
  No External Components to Set Frequency
  5 Options Cover 32.768kHz to 8.192MHz:
     –  LTC6930-4.19: 4.194304MHz ÷ N
     –  LTC6930-5.00: 5.000000MHz ÷ N
     –  LTC6930-7.37: 7.373800MHz ÷ N
     –  LTC6930-8.00: 8.000000MHz ÷ N
     –  LTC6930-8.19: 8.192000MHz ÷ N
    Where N = 1, 2, 4, 8, 16, 32, 64, 128
(N Determined by State of DIVA, DIVB, DIVC Pins)
  –40°C to 125°C Operating Temperature Range
  Tiny 2mm × 3mm DFN or MS8 Package
 
                     Applications
 
                              •  Digitally Controlled Oscillator
                              •  Microprocessor Clock
                              •  Power Supply Clock
                              •  Portable and Battery Operated Devices
 
Linear Tech Image
Linear Tech Part Number Packaging Frequency Voltage - Supply Current Package
    LTC6930CDCB-4.19#TRMPBF Tape/Reel, Cut Tape 4.194304 MHz 1.7 V ~ 5.5 V 355µA 8-DFN
    LTC6930CMS8-4.19#PBF Tube 4.194304 MHz 1.7 V ~ 5.5 V 355µA 8-MSOP
    LTC6930CDCB-5.00#TRMPBF Tape/Reel, Cut Tape 5 MHz 1.7 V ~ 5.5 V 375µA 8-DFN
    LTC6930CMS8-5.00#PBF Tube 5 MHz 1.7 V ~ 5.5 V 375µA 8-MSOP
    LTC6930CDCB-7.37#TRMPBF Tape/Reel, Cut Tape 7.3728 MHz 1.7 V ~ 5.5 V 440µA 8-DFN
    LTC6930CMS8-7.37#PBF Tube 7.3728 MHz 1.7 V ~ 5.5 V 440µA 8-MSOP
    LTC6930CDCB-8.00#TRMPBF Tape/Reel, Cut Tape 8 MHz 1.7 V ~ 5.5 V 475µA 8-DFN
    LTC6930CMS8-8.00#PBF Tube 8 MHz 1.7 V ~ 5.5 V 475µA 8-MSOP
    LTC6930CDCB-8.19#TRMPBF Tape/Reel, Cut Tape 8.192 MHz 1.7 V ~ 5.5 V 540µA 8-DFN
    LTC6930CMS8-8.19#PBF Tube 8.192 MHz 1.7 V ~ 5.5 V 540µA 8-MSOP
    LTC6930IDCB-4.19#TRMPBF Tape/Reel, Cut Tape 4.194304 MHz 1.7 V ~ 5.5 V 355µA 8-DFN
    LTC6930IMS8-4.19#PBF Tube 4.194304 MHz 1.7 V ~ 5.5 V 355µA 8-MSOP
    LTC6930IDCB-5.00#TRMPBF Tape/Reel, Cut Tape 5 MHz 1.7 V ~ 5.5 V 375µA 8-DFN
    LTC6930IMS8-5.00#PBF Tube 5 MHz 1.7 V ~ 5.5 V 375µA 8-MSOP
    LTC6930IDCB-7.37#TRMPBF Tape/Reel, Cut Tape 7.3728 MHz 1.7 V ~ 5.5 V 440µA 8-DFN
    LTC6930IMS8-7.37#PBF Tube 7.3728 MHz 1.7 V ~ 5.5 V 440µA 8-MSOP
    LTC6930IDCB-8.00#TRMPBF Tape/Reel, Cut Tape 8 MHz 1.7 V ~ 5.5 V 475µA 8-DFN
    LTC6930IMS8-8.00#PBF Tube 8 MHz 1.7 V ~ 5.5 V 475µA 8-MSOP
    LTC6930IDCB-8.19#TRMPBF Tape/Reel, Cut Tape 8.192 MHz 1.7 V ~ 5.5 V 540µA 8-DFN
    LTC6930IMS8-8.19#PBF Tube 8.192 MHz 1.7 V ~ 5.5 V 540µA 8-MSOP