digital-brain/content/zettels/signal_conditioner.md

+++ title = "Signal Conditioner" author = ["Thomas Dehaeze"] draft = false +++

Tags

[Sensors]({{< relref "sensors" >}}), [Electronics]({{< relref "electronics" >}})

Most sensors needs some signal conditioner electronics before digitize the signal. Few examples are:

• Piezoelectric force sensors
• Geophone
• Photodiode
• Thermocouple

The signal conditioning electronics can have different functions:

• Amplification
• Isolation
• Filtering
• Excitation
• Linearization

Depending on the electrical quantity that is meaningful for the measurement, different types of amplifiers are used:

• Current to Voltage ([Transimpedance Amplifiers]({{< relref "transimpedance_amplifiers" >}}))
• Charge to Voltage ([Charge Amplifiers]({{< relref "charge_amplifiers" >}}))
• Voltage to Voltage ([Voltage Amplifier]({{< relref "voltage_amplifier" >}}))