ADS42LB49 datasheet(3/70 Pages) TI

3 / 70 page

ADS42JB49

ADS42JB69

www.ti.com

SLAS900C – OCTOBER 2012 – REVISED JULY 2013

RECOMMENDED OPERATING CONDITIONS

(1)

Over operating free-air temperature range, unless otherwise noted.

PARAMETER

MIN

NOM

MAX

UNIT

SUPPLIES

AVDD

Analog supply voltage

1.7

1.8

1.9

AVDD3V

Analog buffer supply voltage

3.15

3.3

3.45

DRVDD

Digital supply voltage

1.7

1.8

1.9

IOVDD

Output buffer supply voltage

1.7

1.8

1.9

ANALOG INPUTS

Default after reset

VPP

VID

Differential input voltage range

2.5

VPP

VICR

Input common-mode voltage

VCM ± 0.025

Maximum analog input frequency with 2.5-VPP input amplitude

250

MHz

Maximum analog input frequency with 2-VPP input amplitude

400

MHz

CLOCK INPUT

10x mode

250

MSPS

Input clock sample rate

20x mode

156.25

MSPS

Sine wave, ac-coupled

0.3(3)

1.5

VPP

LVPECL, ac-coupled

1.6

VPP

Input clock amplitude differential

(VCLKP – VCLKM)

LVDS, ac-coupled

0.7

VPP

LVCMOS, single-ended, ac-coupled

1.5

Input clock duty cycle

35%

50%

65%

DIGITAL OUTPUTS

CLOAD

Maximum external load capacitance from each output pin to DRGND

3.3

RLOAD

Single-ended load resistance

+50

Operating free-air temperature

–40

+85

°C

(1)

After power-up, to reset the device for the first time, use the RESET pin only. Refer to the Register Initialization section.

(2)

For details, refer to the Digital Gain section.

(3)

Refer to the Performance vs Clock Amplitude curves, Figure 32 and Figure 33.

Table 1. High-Frequency Modes Summary

ADDRESS

VALUE

DESCRIPTION

90h

High-frequency modes should be enabled for input frequencies greater than 250 MHz.

90h

High-frequency modes should be enabled for input frequencies greater than 250 MHz.

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