TLV7021 datasheet(8/18 Pages) TI1

8 / 18 page

Bias

Power-on-reset

IN+

IN-

OUT

VCC

GND

TLV7011, TLV7021

SLVSDM5 – MAY 2017

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Product Folder Links: TLV7011 TLV7021

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7 Detailed Description

7.1 Overview

The TLV7011 and TLV7021 devices are single-channel, micro-power comparators with push-pull and open-drain

outputs. Operating from 1.4 V to 5.5 V and consuming only 5 µA, the TLV7011 and TLV7021 are ideally suited

for portable and industrial applications. The TLV7011 and TLV7021 are available in an ultra-small X2SON

package (0.8 × 0.8 mm) to offer significant board space saving in space-challenged designs.

7.2 Functional Block Diagram

7.3 Feature Description

The TLV7011 and TLV7021 devices are micro-power comparators that are capable of operating at low voltages.

The TLV7011 and TLV7021 feature a rail-to-rail input stage capable of operating up to 100 mV beyond the VCC

power supply rail. The TLV7011 and TLV7021 also feature a push-pull and open-drain output stage with internal

hysteresis.

7.4 Device Functional Modes

The TLV7011 and TLV7021 have two functional modes. The first functional mode is called Power-on-Reset

(POR) Mode. While the power supply (VS) is ramping up to the recommended operating voltage or ramping

down, the POR circuitry will hold the output of the comparator at VEE. The second functional mode is called

Normal Mode. Normal Mode is defined as the mode when VS is greater than or equal to the recommended

operating voltage. During Normal Mode, the comparator output reflects the state of the differential input (VID).

7.4.1 Inputs

The TLV7011 and TLV7021 input common-mode extends from VEE to 100 mV above VCC. The differential input

voltage (VID) can be any voltage within these limits. No phase-inversion of the comparator output will occur when

the input pins exceed VCC and VEE.

The input bias current is typically 1 pA for input voltages between VCC and VEE. The comparator inputs are

protected from overvoltage and undervoltage by internal diodes connected to VCC and VEE. As the input voltage

exceeds VCC and VEE, the protection diodes become forward biased and begin to conduct causing the input bias

current to increase exponentially.

TLV7021 Datasheet(PDF) 8 Page - Texas Instruments