• 8 channels with 81 ps BIN
• LVTTL inputs
• 5.5 ns pulse-pair resolution with 32-fold multi-hit capability = 200 MHz peak rate
• Trigger to rising or falling edge
• Endless measurement range by internal retrigger of START
• 10 MHz continuous rate per channel
• 40 MHz continuous rate per chip

 

 

After an initial start event, the TDC-GPX can generate its own internal start. The time interval is measured from the last internal start. The start number is added to the output data. The overflow of the start number can be accessible at the interrupt pin for an external extansion of the start number counter.

 

Timings

Par.	Time (Condition)		Description
	Min.	Max.
tph	1.5 ns	-	Positive pulse width
tpl	1.5 ns	-	Negative pulse width
tss	0 ns min **5.2 ns	9.4 µs *unlimited	Start to Stop
trr	5.5 ns (typ.)		Rising edge to rising edge
tff	5.5 ns (typ.)		Falling edge to falling edge
* with int. start retrigger ** with StopDisStart =1

Resolution

BIN size at 3.3V, 25°C:	Best 64ps	Typical 81ps	Worst 113ps	Standard deviation:	0.9 LSB + 2.5ps * dt/µs