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数模转换电路DA芯片,运放的选型

Other Parts Discussed in Thread: OPA2690, DAC904, LM2663

1.做了一个DA电路,芯片选用的是DAC904,运放选择的是OPA2690,用LM266为运放提供-5电压,这样选型合适吗?

2.DA电路要求精度高,上次给因为给运放OPA260提供的电压不稳定,造成杂波太多,我想问的是还有还有比LM2663性能还要好的稳压芯片吗?我需要性能更好的

3.还有有没有比opa2690性能更好的,适合差分转单端的运放?推荐一下吧