This is a simple design circuit for one method using a low-power, low-cost, closed-loop buffer including resistors and bypass capacitors. This circuit is based on CLC109 single chip IC. This is the figure of the circuit;
The CLC109's typical differential gain and phase are 0.7% and 0.03 degrees, respectively, while driving a 150 Ohms load. However, by adding a 1-kOhms pull-down resistor on the output pin, the respective numbers improve to 0.05% and 0.01 degrees, respectively. Thus, the cost of a single resistor brings an order-of-magnitude improvement and makes the differential gain and phase of the buffer comparable to much more expensive devices. However, if low power is a sensitive issue, you should carefully consider this method. Adding the resistor increases in the figure is typical supply current from 3.5 to 7.5 mA. This idea works equally well with video op amps.
The CLC109's typical differential gain and phase are 0.7% and 0.03 degrees, respectively, while driving a 150 Ohms load. However, by adding a 1-kOhms pull-down resistor on the output pin, the respective numbers improve to 0.05% and 0.01 degrees, respectively. Thus, the cost of a single resistor brings an order-of-magnitude improvement and makes the differential gain and phase of the buffer comparable to much more expensive devices. However, if low power is a sensitive issue, you should carefully consider this method. Adding the resistor increases in the figure is typical supply current from 3.5 to 7.5 mA. This idea works equally well with video op amps.
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