Signal-Detector
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A low-cost RF power detector based on the AD8319

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12/12 lines (14 parts)
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ReferencesQtyManufacturerMPNDigikeyMouserNewarkFarnell
C1, C22C1608X7R1H473K080AA445-1313-6-ND810C1608X7R1H473K87R37461907317
C31CC0603DRNPO9BN8R2311-1742-6-ND603CC603DRNPO9BN8R246WX106721955
C61CC0603KRX7R7BB104311-1088-6-ND603CC603KRX7R7BB10468R4769432210
C71C0603C101J5GACTU399-1061-1-ND80C0603C101J5G74C1322 C0603C101J5GAC78672392139
J1, J22CONREVSMA003.062CONREVSMA003.062-L-ND712CONREVSMA003.062
J3110118192-0001LF609-4613-6-ND649101181920001LF67T22582506568
R11RC0603FR-078K06L311-8.06KHRDKR-ND603RC0603FR078K06L18X99172474317

Signal Detector

Peripherals

AD8319

The Signal Detector utilizes an Analog Devices AD8319 RF power detector. Power is supplied to the board through the USB Micro B connector. The RF signal input is J2, and the output voltage is J1. Above you see the minimal external passives required to use the AD8319, however this board includes some extra external components so that things like the temperature offset and the output voltage can be changed. This board is configured to use the AD8319 in measurement mode, not in control mode.

Specs

The AD8319 has a massive input bandwidth of 1MHz to 10GHz, with a dynamic range of 45dB up to 8GHz ( the chip operates to 10GHz, but there is reduced accuracy and dynamic range above 8GHz). The AD8319 operates at a maximum quiescent current of 30mA, and includes automatic internal temperature adjustments with the use of an external resistor.

AD8319