|
TDC-GPX:
I-Mode - 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
Start
Retrigger
 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 | Typical | Worst |
| 64ps | 81ps | 113ps |
| Standard
deviation: | 0.9
LSB +
2.5ps * dt/µs | | 
