ISLA112P50

9

FN7604.2

August 1, 2011

Switching Specifications

PARAMETER

CONDITION

SYMBOL

MIN

TYP

MAX

UNITS

A/D OUTPUT

Aperture Delay

375

ps

RMS Aperture Jitter

90

fs

Input Clock to Output Clock Propagation

Delay

2.6

2.9

3.3

ns

AVDD, OVDD = 1.7V to 1.9V,

2.0

2.6

3.6

ns

Relative Input Clock to Output Clock

Propagation Delay Matching (Note 16)

AVDD, OVDD = 1.7V to 1.9V,

-450

450

ps

Input Clock to Data Propagation Delay,

LVDS Mode

1.74

2.6

3.83

ns

Output Clock to Data Propagation Delay

LVDS or CMOS Mode

-250

0

250

ps

Synchronous Clock Divider Reset Setup

Time (with respect to the positive edge of

CLKP)

300

75

ps

Synchronous Clock Divider Reset Hold Time

(with respect to the positive edge of CLKP)

450

150

ps

Synchronous Clock Divider Reset Recovery

Time

DLL recovery time after

Synchronous Reset

52

µs

Latency (Pipeline Delay) (Note 17)

L

17

cycles

Overvoltage Recovery

1cycles

SPI INTERFACE (Notes 18, 19)

SCLK Period

Write Operation

t

CLK

32

cycles

(Note 18)

Read Operation

132

cycles

CSB

↓ to SCLK↑ Setup Time

Read or Write

2cycles

CSB

↑ after SCLK↑ Hold Time

Read or Write

11

cycles

Data Valid to SCLK

↑ Setup Time

Write

2cycles

Data Valid after SCLK

↑ Hold Time

Write

8cycles

Data Valid after SCLK

↓ Time

Read

33

cycles

Data Invalid after SCLK

↑ Time

Read

6cycles

Sleep Mode CSB

↓ to SCLK↑ Setup Time

(Note 20)

Read or Write in Sleep Mode

150

µs

NOTES:

14. The Tri-Level Inputs internal switching thresholds are approximately 0.43V and 1.34V. It is advised to float the inputs, tie to ground or AVDD depending

on desired function.

15. The voltage is expressed in peak-to-peak differential swing. The peak-to-peak singled-ended swing is 1/2 of the differential swing.

16. The relative propagation delay is the timing of the output clock of any A/D with respect to the nominal timing of any other A/D, given that all devices

are clocked at the same time and are matched in temperature and voltage. It is specified over the full operating temperature and voltage range, and

is established by characterization and not production tested.

17. The pipeline latency of this converter is fixed.

19. The SPI may operate asynchronously with respect to the A/D sample clock.

20. The CSB setup time increases in sleep mode due to the reduced power state, CSB setup time in Nap mode is equal to normal mode CSB setup time

(4ns min).