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How much noise is at the output if I configure the op amp for 50dB of gain
jlamflux

jlamflux

@copilot How much noise is at the output if I configure the op amp for 50dB of gain
2y

copilot

To determine the noise at the output of an op-amp configured for 50dB of gain, you would need to know the input noise of the op-amp and any other noise sources in your circuit.
However, as an AI, I don't have real-time access to your specific op-amp's datasheet or your circuit details. I recommend you to refer to the op-amp's datasheet for the input noise specification.
Once you have the input noise, you can calculate the output noise using the formula:
[ V_{out} = V_{in} \times Gain ]
where:
  • ( V_{out} ) is the output noise,
  • ( V_{in} ) is the input noise, and
  • Gain is the amplification factor of the op-amp (in this case, 50dB which is equivalent to a gain of 316.23 in linear scale).
Please note that this is a simplified calculation and actual noise can be influenced by other factors such as power supply noise, thermal noise, and noise from other components in the circuit.
Source(s):
https://www.flux.ai/p/blog/ditch-datasheets-with-this-flux-copilot-upgrade https://docs.flux.ai/tutorials/ai-for-hardware-design https://docs.flux.ai/reference/opamp
2y
1
Note 2
Line 1
Place within 2mm of U4
Line 2
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-6V
J1
IC1
+6V
+3V3
Note 1
Line 1
Place within 2mm of U3
Line 2
---------------------------------------
-6V
+3V3
To Layout Engineer
Line 1
Place within 2mm of IC1
Line 2
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+3V3
+6V
+6V
+6V
+3V3
+3V3
+3V3
+3V3
J2
+3V3
+3V3
+3V3
-6V
+3V3
To Electrical Engineer
Line 1
Photodiode has 2nA of dark current at a reverse bias voltage of 10V, so it does not significantly load the resistive divider
Line 2
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Line 3
It can be assumed the photodiode will produce a 10mV spike over 50us
Line 4
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Line 5
See Comment 8 for copilot's analog frontend design
RAD_BEEP
GAMMA_RAW
+6V_I_MON
SPI1_COPI
SPI1_SCK
SPI1_CS
SPI1_CS
-6V_CHRG_PUMP_EN
+6V_BUCK_PG
SPI1_COPI
IC1_RST
UART1_TX
UART1_TX
SPI1_SCK
GAMMA_RAW
I2C1_SDA
IC1_RST
UART1_RX
I2C1_SCL
I2C1_SDA
UART1_RX
+6V_BUCK_EN
GAMMA_RAW
-6V_V_MON_INV
I2C1_SCL
+6V_V_MON
SPI1_CIPO
SPI1_CIPO
RAD_BEEP
U6
C5
Capacitance
24.9pF
RF1
Resistance
316kΩ
RF2
Resistance
316kΩ
C3
Capacitance
10nF
C8
Capacitance
100nF
C1
Capacitance
10nF
C7
Capacitance
10nF
C10
Capacitance
22uF
C4
Capacitance
100nF
R1
Resistance
20kΩ
U5
C6
Capacitance
24.9pF
RIN1
Resistance
1kΩ
C9
Capacitance
100nF
R2
Resistance
40kΩ
RIN2
Resistance
1kΩ
C2
Capacitance
100nF
U4
CELL1
U3

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    IncessantBlabber-Radioactive-symbol.svg

    IncessantBlabber-Radioactive-symbol.svg

    IncessantBlabber-Radioactive-symbolDefault

    Environmental Radiation Logger Co-Pilot Example

    Project Outline: Microcontroller RTC Dosimeter Op Amp Stage
    See DigiKey BoM for the Analog FrontEnd: www.digikey.com/en/mylists/list/476AJE8R2I

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