ssm2164_getting_started
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ssm2164_getting_started [2018/04/26 17:03] – [Class A] phatline | ssm2164_getting_started [2018/04/26 17:05] – [Class A] phatline | ||
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Line 76: | Line 76: | ||
Lower current results in higher distortion/ | Lower current results in higher distortion/ | ||
==== Class A ==== | ==== Class A ==== | ||
- | Pin is Connected to +12V via a Resistor\\ | + | Pin 1 is Connected to +12V via a Resistor\\ |
Higher current results in lower distortion/ | Higher current results in lower distortion/ | ||
lets look in the datasheet: | lets look in the datasheet: | ||
{{: | {{: | ||
Figures 11 and 12 show the THD and noise performance of the | Figures 11 and 12 show the THD and noise performance of the | ||
- | SSM2164 as the bias current is adjusted. Notice the two | + | SSM2164 as the bias current is adjusted\\ |
- | characteristics have an inverse characteristic.\\ | + | |
- | The quiescent current in the core is set by adding a single | + | |
- | resistor from the positive supply to the MODE pin.\\ the formula for the | + | |
- | MODE current is:\\ | + | |
I_MODE = ( (V+)−0.6V )/ RB\\ | I_MODE = ( (V+)−0.6V )/ RB\\ | ||
1,52mA = (12V-0.6V) / 7,5K\\ | 1,52mA = (12V-0.6V) / 7,5K\\ | ||
Leaving the MODE pin open sets the SSM2164 in Class AB with 30 μA in the Gain-Core\\ | Leaving the MODE pin open sets the SSM2164 in Class AB with 30 μA in the Gain-Core\\ |
ssm2164_getting_started.txt · Last modified: 2018/04/26 19:28 by phatline