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Prototype for -90dBm to -40dBm, 500Hz to 500MHz sine wave level detector
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Engineering & Manufacturing > Electrical

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  • Posted: Mon, Oct 01, 2012
  • Time Left: Closed
  • Location: Anywhere
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  • Start: Immediately
  • Budget: Less than $500
  • Fixed Price Job
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  • W9 Not Required
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We need a custom level detector designed and implemented as a prototype. The circuit is for measuring the amplitude of a sine wave signal. This amplitude in decibel (dB) can be read by a simple microprocessor interface (I2C, SPI etc.) or read through an A/D converter. The A/D converter and/or microprocessor is not a required part of this project, but provisions for rigorous testing are required.

Input frequency: 500 Hz to 500 MHz
Input range: -90 dBm to -40 dBm
Accuracy: 0.25 dBm
Input connector: SMA female.
Impedance: 50R +/- 10%
Max input level: 10 dBm (must survive signals up to 5Vp-p)
Board size: max 100 mm by 50 mm
Power source: USB
Temperature: 0C to 65C.
Humidity: 0% RH to 95% RH, non-condensing.
BOM cost (Farnell/Digikey/Mouser 100 pcs pricing): Max EUR 100

Having a look-up table with calibration values to be applied to the output signal is acceptable, but the circuit needs to be designed in a way that this calibration is valid over the temperature range and supply voltage...

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Job ID: 33963535
 
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Delivery
Within 3 months
$410.00
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