TLV7021 datasheet(24/44 Pages) TI

24 / 44 page

0.1 uF

Package

Body

Outline

OUT

VCC

IN+

IN-

4 mil VIA

Bottom-Layer

Trace

Top-Layer

Trace

Top-View

8 mil VIA

TLV7011, TLV7021, TLV7012, TLV7022

SLVSDM5F – SEPTEMBER 2017 – REVISED MARCH 2020

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Product Folder Links: TLV7011 TLV7021 TLV7012 TLV7022

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9 Power Supply Recommendations

The TLV701x and TLV702x have a recommended operating voltage range (VS) of 1.6 V to 5.5 / 6.5 V. VS is

defined as VCC – VEE. Therefore, the supply voltages used to create VS can be single-ended or bipolar. For

example, single-ended supply voltages of 5 V and 0 V and bipolar supply voltages of +2.5 V and –2.5 V create

comparable operating voltages for VS. However, when bipolar supply voltages are used, it is important to realize

that the logic low level of the comparator output is referenced to VEE.

Output capacitive loading and output toggle rate will cause the average supply current to rise over the quiescent

current.

10 Layout

10.1 Layout Guidelines

To reduce PCB fabrication cost and improve reliability, TI recommends using a 4-mil via at the center pad

connected to the ground trace or plane on the bottom layer.

A power-supply bypass capacitor of 100 nF is recommended when supply output impedance is high, supply

traces are long, or when excessive noise is expected on the supply lines. Bypass capacitors are also

recommended when the comparator output drives a long trace or is required to drive a capacitive load. Due to

the fast rising and falling edge rates and high-output sink and source capability of the TLV7011 and TLV7021

output stages, higher than normal quiescent current can be drawn from the power supply. Under this

circumstance, the system would benefit from a bypass capacitor across the supply pins.

10.2 Layout Example

Figure 42. Layout Example

TLV7021 Datasheet(PDF) 24 Page - Texas Instruments