TDC-GPX2 datasheet(12/77 Pages) AMSCO

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[v1-03] 2017-Dec-18

TDC-GPX2 − Conver ter Characteristics

Reference Clock and Stop Input Requirements

General Conditions: VDD33 = 3.3V; VDD18 = 1.8V;

TA = 0°C to 80°C; VID = 200mV; VIC = 1.25V; VIL = 0V; VIH = 3.3V

Figure 11:

Clock and Input Characteristics

Symbol

Description

Condition

Min

Typ

Max

Unit

fREFCLK

Reference clock

frequency

High_Resolution = 0 (off )

High_Resolution = 1 (2x)

High_Resolution = 2 (4x)

III

12.5

10.0

MHz

fREFOSC

Reference oscillator

frequency at pin 52,53

High_Resolution = 0 (off )

High_Resolution = 1 (2x)

High_Resolution = 2 (4x)

III

12.5

10.0

MHz

TREFCLK

Reference clock

period

III

200

500

Reference clock jitter

100

Reference clock

stability

No requirement

tPWH,STOP

Minimum pulse width

LVDS

CMOS

III

tPPS

Minimum

pulse-to-pulse

spacing

High_Resolution = 0 (off )

High_Resolution = 1 (2x)

High_Resolution = 2 (4x)

III

100

tPPS,CCH

Minimum

pulse-to-pulse

spacing

CHANNEL_COMBINE = 1

For a single pair of pulses.

III

tSU,RST

Setup time from

RSTIDX to REFCLK

III

tHD,RST

Hold time from

RSTIDX to REFCLK

III

tSU,DIS

Setup time from STOP

to DISABLE

III

tHD,DIS

Hold Time from STOP

to DISABLE

III

tPIN_ENA

Pin activation time

from configuration of

PIN_ENA…

to valid data

Pins: RSTIDX, DISABLE,

REFCLK, STOP1…4

III

200

μs

tPOR

Delay between

power-on or

initialization reset and

next communication

Power-up, opcodes spiopc_

power & spiopc_init, pin

III

100

μs

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