OPA625 datasheet(11/46 Pages) TI1

Part #	OPA625

Description	18-Bit Analog-to-Digital Converter (ADC) Drivers

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Manufacturer	TI1 [Texas Instruments]

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MODE

OPAx625

STATE

Low-Power mode

High-Drive mode

tHD-LP

tLP-HD

OPA625, OPA2625

www.ti.com

SBOS688A – APRIL 2015 – REVISED OCTOBER 2015

6.9 Switching Characteristics

at TA = 25°C, V+ = 5 V, V– = 0 V, MODE pin connected to V– pin, gain (G) = 1 , VCOM = VO = 2.5 V, CLOAD = 20 pF, and RLOAD

= 1 k

Ω connected to 2.5 V (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Settling time to within 50 µV of final value,

180

ns

MODE pin = high to low (LP to HD), VO = 3.8 V

Delay time, MODE pin falling

tLP-HD is defined as the time taken for the

tLP-HD

(low-power mode to high-drive mode)

quiescent current to increase from 110% of its

170

ns

value in LP mode to 90% of its value in HD

mode.

tHD-LP is defined as the time taken for the

Delay time, MODE pin rising

quiescent current to decrease from 90% of its

tHD-LP

300

ns

(high-drive mode to low-power mode)

value in HD mode to 110% of its value in LP

mode.

Figure 1. Switching Characteristics Timing Diagram

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