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  • Users: KWOL
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  1. KWOL

    AD7730 - latching-up ?

    Hi, I am using an AD7730BN and a strain-gauge with sensitivity 2mV/V, so the input voltage range is -0..10mV with 5V excitation. Active channel: IN1+AIN1-; After setting up DAC and FILTER regs, applying full-scale int. calibration, the content of the gain register is insignificantly changed...
  2. KWOL

    Hi, I want to supply a circuit fro

    Hi, I want to supply a circuit from USB port. The circuit is a precision measurement device (includes 4 AD7730s), so I need a very low noise 5V (+-0.2V) power supply (max I=300mA). Since the USB port can supply (noisy and unstable) voltage in range 4.5-5.5V, I'm considering using a step-up or...
  3. KWOL

    USB power supply stabilising

    I want to supply a circuit from USB port. The circuit is a precision measurement device (includes 4 AD7730s), so I need a very low noise 5V (+-0.2V) power supply (max I=300mA). Since the USB port can supply (noisy and unstable) voltage in range 4.5-5.5V, I'm considering using a step-up or SEPIC...

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