These devices operate over a very wide supply range
• Unity Gain Stable of ±2.25 V to ±18 V, on only 3.6 mA of supply current
• Low Quiescent Current: per channel. The OPA1611 and OPA1612 op amps
3.6 mA per Channel are unity-gain stable and provide excellent dynamic
behavior over a wide range of load conditions.
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确定下，812是否适合作跟随器（有些OP有最低放大倍数的限制），同相极没有偏置电流的放电回路。