NAU82011WG
NAU82011WG User Manual
March, 2016
Rev 1.0
Power Connection
An external DC Voltage supply with a compliance of at least 2 Amperes should be connected to VDD &
GND.
Gain Setting
NAU82011WG is a variable gain amplifier. The gain can be varied by varying the external input
resistors(R1)
. The device has an on chip feedback resistor of 300kΩ. The gain is expressed as follows
(
)
( )
The Evaluation board comes with 150kΩ resistors or a Gain of 6dB.
Input Connection
The default input configuration is single ended mode. If differential configuration is desired then, the 0
ohm resistor R3 needs to be removed. If Audio Precision Analyzer is used as input source,
Unbalanced inputs are to be selected for single ended operation or Balanced inputs for differential
mode.
Output Connection
An 8 ohm 68uH load should be connected on the output channel (J3- J2). Connect the outputs to the
inputs of the Audio Precision Analyzer (Balanced) via the AP0025 Aux Filter.
Power Up
For optimum performance the board should be power up with in switch closed state. Once the power is
applied switch must be released to power up the board. Then, the input signal can be applied.
Important note:
