OPA1602: INPUT VOLTAGE NOISE DENSITY measurement conditions

Takahashi Kenji

Part Number: OPA1602
Other Parts Discussed in Thread: OPA1612

Hi,

I am looking for an operational amplifier with low noise density with input voltage.

There is a graph of Voltage Noise Density in Figure 1 of the datasheet. Please tell me the gain value of this measurement result.

I think so more than 10.

Best regards

Kenji Takahashi

over 2 years ago

+1 Marek Lis over 2 years ago

TI__Guru 66561 points

Kenji,

The Fig 1 in OPA1602 datasheet shows input referred voltage noise density while the gain only matters if you measure the noise at the output - see below.

As far as the broadband voltage noise spectral density goes, OPA1612 has the lowest - 1.1nV/rt-Hz (see below).

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OPA1602: INPUT VOLTAGE NOISE DENSITY measurement conditions