+

_

Device

REF3333

GND

Time (5 ms/div)

Output Voltage

Input Voltage

C030

TLV1702-Q1, TLV1704-Q1

www.ti.com

SLOS890A – NOVEMBER 2015 – REVISED DECEMBER 2015

8.3 Feature Description

8.3.1 Comparator Inputs

The TLV170x-Q1 device is a rail-to-rail input comparator, with an input common-mode range that includes the

supply rails. The TLV170x-Q1 device is designed to prevent phase inversion when the input pins exceed the

supply voltage. Figure 18 shows the TLV170x-Q1 device response when input voltages exceed the supply,

resulting in no phase inversion.

Figure 18. No Phase Inversion: Comparator Response to Input Voltage

(Propagation Delay Included)

8.4 Device Functional Modes

8.4.1 Setting Reference Voltage

Using a stable reference is important when setting the transition point for the TLV170x-Q1 device. The REF3333,

as shown in Figure 19, provides a 3.3-V reference voltage with low drift and only 3.9

μA of quiescent current.

Figure 19. Reference Voltage for the TLV170x-Q1

Copyright © 2015, Texas Instruments Incorporated

Submit Documentation Feedback

11

Product Folder Links: TLV1702-Q1 TLV1704-Q1