TDC Is Compact And Precise

The AS6500 time-to-digital converter (TDC) from ams comes in a 6 mm x 6 mm package and measures time intervals as short as 5ns to a resolution of 10 ps. Providing CMOS inputs, the AS6500 is based on ams’ TDC-GPX2 and delivers a sampling rate up to 1.5 Msamples/s.


Like the TDC-GPX2, the AS6500 is an integrated four-channel converter IC offering single-measurement resolution of up to 20 psrms per channel in normal mode, and 20 ns pulse-to-pulse spacing. Operating in dual-channel high-resolution mode, it can achieve a maximum resolution of 10 psrms with 5-ns pulse-to-pulse spacing.


The device is housed in a smaller 40-lead QFN package with a footprint 56% smaller than the TDC-GPX2. Operating from a 3.3V supply, the AS6500 typically consumes 60 mW in normal operation, and draws 60 µA in stand-by mode. It supports CMOS interfaces from a host system and provides its calibrated output as a digital signal over a standard serial peripheral interface (SPI).


The AS6500 is available now in production volume. Unit pricing is available on request from ams. For more technical information, get a look at the AS6500 datasheet.


Suggested Articles

An accelerometer measures the rate of change of an object’s velocity to monitor its movement.

From cell phones to industrial manufacturing, knowing when an object (or a person!) is nearby is a basic sensing requirement.

Compact and rugged sensors from Balluff monitor temperature of fluids and compressed air.