DATA CONVERTERS

-

+

-

+

5 V

0.1

µF

-5 V

-

+

-

+

5 V

0.1

µF

-

+

-

+

5 V

0.1

µF

THS1206

THS4150

THS4151

Data converters are one of the most popular applications for the fully differential amplifiers. The following

schematic shows a typical configuration of a fully differential amplifier attached to a differential ADC.

Figure 31. Fully Differential Amplifier Attached to a Differential ADC

differential output may be fed into a data converter. This method eliminates the use of a transformer in the circuit.

amplifier using a bypass capacitor for stability. For proper operation, the input common-mode voltage to the input

terminal of the amplifier should not exceed the common-mode input voltage range.

Figure 32. Fully Differential Amplifier Using a Single-Supply

Some single-supply applications may require the input voltage to exceed the common-mode input voltage range.

In such cases, the following circuit configuration is suggested to bring the common-mode input voltage within the

specifications of the amplifier.

Figure 33. Circuit With Improved Common-Mode Input Voltage

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