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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 TLV930x family offers excellent DC precision and DC performance. These devices operate up to 40-V

supply rails and offer true rail-to-rail input/output, low offset voltage and offset voltage drift, as well as 1-MHz

bandwidth and high output drive. These features make the TLV930x a robust, high-performance operational

amplifier for high-voltage industrial applications.

8.2 Typical Applications

8.2.1 High Voltage Precision Comparator

Many different systems require controlled voltages across numerous system nodes to ensure robust operation. A

comparator can be used to monitor and control voltages by comparing a reference threshold voltage with an

input voltage and providing an output when the input crosses this threshold.

The TLV930x family of op amps make excellent high voltage comparators due to their MUX-friendly input stage

(see Section 7.3.1). Previous generation high-voltage op amps often use back-to-back diodes across the inputs

to prevent damage to the op amp which greatly limits these op amps to be used as comparators, but the

TLV930x's patented input stage allows the device to have a wide differential voltage between the inputs.

V+

OUT

Figure 8-1. Typical Comparator Application

8.2.1.1 Design Requirements

The primary objective is to design a 40-V precision comparator.

• System supply voltage (V+): 40 V

• Resistor 1 value: 100 kΩ

• Resistor 2 value: 100 kΩ

• Reference threshold voltage (VTH): 20 V

• Input voltage range (VIN): 0 V – 40 V

• Output voltage range (VOUT): 0 V – 40 V

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TLV9301, TLV9302, TLV9304

SBOS941C – FEBRUARY 2019 – REVISED FEBRUARY 2021

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