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- External clocking from 2 GHz down to 300 MHz
- Allows variable frequency external clock signals to be used
- Allows locking to an external 10 MHz reference
- Supports clock signals from ±200 mV to ±1 V
- 50 Ohm input impedance
- AC coupled input
ATS9373: mise à niv.: horloge externe
This optional upgrade allows ATS9373 to perform analog to digital conversion based on an external clock signal. Two software selectable modes of external clocking are supported: user supplies a 10 MHz reference clock and the on-board VCO locks to it; or Fast External Clock whereby ATS9373 takes one (or two in DES mode) samples for each cycle of the user-supplied clock. Fast External clock frequency must remain in the specified range of 300 MHz to 2 GHz.
Customers who need the external clock lower limit to go down to 100 MHz should order the Screened External Clock instead.
ATS9373 Variable Frequency External Clocking
Some biomedical applications, such as OCT, require analog-to-digital conversion based on a clock signal whose frequency is not uniform over time. Most commercially available waveform digitizer boards cannot handle these types of variable frequency clock signals. AlazarTech has done a great deal of engineering work to make sure that ATS9373 is compatible with variable frequency external clock.