8 Application and Implementation

Note

Information in the following applications sections is not part of the TI component specification,

and TI does not warrant its accuracy or completeness. TI’s customers are responsible for

determining suitability of components for their purposes, as well as validating and testing their design

implementation to confirm system functionality.

8.1 Application Information

The TLV301x-EP comparator family with on-chip 1.242-V series reference with the choice of either open-drain or

push-pull output stages.

A typical supply current of 2.8 μA and small packaging combine with 1.8-V supply requirements to make the

TLV301x-EP devices optimal for battery and portable designs.

Figure 8-1 shows the typical connections for the TLV301x-EP device.

V

IN–

V

IN+

V

OUT

0.01 µF

10 µF

R

PULLUP

(1)

10 kΩ

V+

4

3

5

REF

2

V-

1

6

TLV301x

(1) Use R

with the TLV3011 only.

PULLUP

Figure 8-1. Basic Connections of the TLV301x-EP

8.1.1 External Hysteresis

Comparator inputs have no noise immunity within the range of specified offset voltage (±12 mV). For noisy

input signals, the comparator output may display multiple switching as input signals move through the switching

threshold. The typical comparator threshold of the TLV301x-EP is ±0.5 mV. To prevent multiple switching within

the comparason threshold of the comparator, external hysteresis may be added by connecting a small amount

of feedback to the positive input. Figure 8-2 shows a typical topology used to introduce hysteresis, described by

this equation:

V

=

HYST

V+ × R1

R1 + R2

TLV301x

V

IN

V

OUT

R

PULLUP

(1)

V+

5 V

V

REF

R

1

39 kΩ

R2

560 kΩ

REF

V

= 0.38 V

HYST

(1) Use R

with the TLV3011 only.

PULLUP

–

+

Figure 8-2. Adding Hysteresis

TLV3011-EP, TLV3012-EP

SGLS349A – OCTOBER 2006 – REVISED MAY 2023

www.ti.com

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