I have an application where my Arduino is controlling a mcp4725 DAC for a design replacing a sensor on an old car. The DAC provides the analog output voltage, .25V to 4.9V to the computer. I recently measured the OEM device I'm looking at replacing and the sensor output had 40mA of current on the line.

Because the mcp4725 DAC only is good for 25mA I need to increase the output current of my DAC, MCP4725.

After some reading I thought I could use an op-amp in a voltage follower configuration.

Considered to use the TI TLV2460 family but seemed like the output current goes to zero when powered with a 5V supply with a near 5V output voltage.

Seems like all the op amp are like this. What can I do? I need 60 ma of output current from .25mV to 4.9V.

Thanks.

I have an application where my Arduino is controlling a mcp4725 DAC for a design replacing a sensor on an old car. The DAC provides the analog output voltage, .25V to 4.9V to the computer. I recently measured the OEM device I'm looking at replacing and the sensor output had 40mA of current on the line.

Because the MCP4725 DAC only is good for 25mA I need to increase the output current of my DAC, MCP4725.

After some reading I thought I could use an op-amp in a voltage follower configuration.

Considered to use the TI TLV2460 family but seemed like the output current goes to zero when powered with a 5V supply with a near 5V output voltage.

Seems like all the op amp are like this. What can I do? I need 60 mA of output current from .25mV to 4.9V.

I have an application where my arduino is controlling a mcp4725 dac for a design replacing a sensor on an old car. The dac provides the analog output voltage, .25v to 4.9v to the computer. I recently measured the oem device I'm looking at replacing and the sensor output had 40mA of current on the line.

Because the mcp4725 DAC only is good for 25mA I need to increase the output current of my DAC, MCP4725.

After some reading I thought I could use an op amp in a voltage follower configuration.

Considered to use the TI TLV2460 family but seemed like the output current goes to zero when powered with a 5V supply with a near 5V output voltage.

Seems like all the op amp are like this. What can I do? I need 60 ma of output current from .25mV to 4.9V.

Thanks Pete

I have an application where my Arduino is controlling a mcp4725 DAC for a design replacing a sensor on an old car. The DAC provides the analog output voltage, .25V to 4.9V to the computer. I recently measured the OEM device I'm looking at replacing and the sensor output had 40mA of current on the line.

Because the mcp4725 DAC only is good for 25mA I need to increase the output current of my DAC, MCP4725.

After some reading I thought I could use an op-amp in a voltage follower configuration.

Considered to use the TI TLV2460 family but seemed like the output current goes to zero when powered with a 5V supply with a near 5V output voltage.

Seems like all the op amp are like this. What can I do? I need 60 ma of output current from .25mV to 4.9V.

Thanks.