LMV321IDBVT datasheet(18/50 Pages) TI1

18 / 50 page

2.7 V

VREF

2.5 V

VIN

VDIFF

VOUT-

VOUT+

LMV358, LMV321, LMV324, LMV324S

SLOS263W – AUGUST 1999 – REVISED OCTOBER 2014

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9 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. Customers should

validate and test their design implementation to confirm system functionality.

9.1 Typical Application

Some applications require differential signals. Figure 46 shows a simple circuit to convert a single-ended input of

0.5 to 2 V into differential output of ±1.5 V on a single 2.7-V supply. The output range is intentionally limited to

maximize linearity. The circuit is composed of two amplifiers. One amplifier acts as a buffer and creates a

voltage, VOUT+. The second amplifier inverts the input and adds a reference voltage to generate VOUT–. Both

VOUT+ and VOUT– range from 0.5 to 2 V. The difference, VDIFF, is the difference between VOUT+ and VOUT–. The

LMV358 was used to build this circuit.

Figure 46. Schematic for Single-Ended Input to Differential Output Conversion

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