4 Typical Applications of OPA1637

An example use case of the OPA1637 is driving a differential input audio ADC such as the TLV320ADC5140. This is shown in Figure 4-1. A circuit designer can easily optimize the circuit by using the full scale input range of the ADC to achieve improved audio performance. This ADC has an improved THD+N performance in a differential input configuration when compared to a single-ended input configuration. The OPA1637 can implement the conversion circuit from single–ended to differential while maintaining high input impedance, minimizing loading on any previous circuitry.

Figure 4-1 Differential input front end example for audio ADCs