AD8362ARUZ Logarithmic RMS Detectors by Analog Devices

Status: Production
Series: AD8362
RoHS: Compliant
View Datasheet Manufacturer Site View Pricing & Stock

The AD8362 is a true rms-responding power detector that has a 65 dB measurement range. It is intended for use in a variety of high frequency communication systems and in instrumentation requiring an accurate response to signal power. It is easy to use, requiring only a single supply of 5 V and a few capacitors. It operates from arbitrarily low frequencies to over 3.8 GHz and accepts inputs from −52 dBm to +8 dBm with crest factors that are typical of quadrature amplitude modulation (QAM) and orthogonal frequency division multiplexing (OFDM) modulation schemes.The input signal is applied to a resistive ladder attenuator that comprises the input stage of a variable gain amplifier (VGA). The 12 tap points are smoothly interpolated using a proprietary technique to provide a continuously variable attenuator, which is controlled by a voltage applied to the VSET pin. The resulting signal is applied to a high performance broadband amplifier. Its output is measured by an accurate square-law detector cell. The fluctuating output is then filtered and compared with the output of an identical squarer, whose input is a fixed dc voltage applied to the VTGT pin, usually the accurate reference of 1.25 V pro-vided at the VREF pin.The difference in the outputs of these squaring cells is integrated in a high gain error amplifier, generating a voltage at the VOUT pin with rail-to-rail capabilities. In a controller mode, this low noise output can be used to vary the gain of a host system’s RF amplifier, thus balancing the setpoint against the input power. Optionally, the voltage at VSET can be a replica of the RF signal’s amplitude modulation, in which case the overall effect is to remove the modulation component prior to detection and low-pass filtering. The corner frequency of the averaging filter can be lowered without limit by adding an external capacitor at the CLPF pin. The AD8362 can be used to determine the true power of a high frequency signal having a complex low frequency modulation envelope, or simply as a low frequency rms volt-meter. The high-pass corner generated by its offset-nulling loop can be lowered by a capacitor added on the CHPF pin.Used as a power measurement device, VOUT is strapped to VSET. The output is then proportional to the logarithm of the rms value of the input. In other words, the reading is presented directly in decibels and is conveniently scaled 1 V per decade, or 50 mV/dB; other slopes are easily arranged. In controller modes, the voltage applied to VSET determines the power level required at the input to null the deviation from the setpoint. The output buffer can provide high load currents.The AD8362 has 1.3 mW power consumption when powered down by a logic high applied to the PWDN pin. It powers up within about 20 μs to its nominal operating current of 20 mA at 25°C. The AD8362 is supplied in a 16-lead TSSOP for operation over the temperature range of −40°C to +85°C.

Prices starting from US$12.84


Distributor Starting From Stock
Logo for Richardson RFPD Richardson RFPD US$13.15
240
Buy Now
Logo for Analog Devices Analog Devices US$18.34
142
Buy Now
Logo for Farnell Farnell US$13.76
71
Buy Now
Logo for Newark Electronics Newark Electronics US$12.84
71
Buy Now
Logo for element14 element14 US$14.39
71
Buy Now
Logo for Chip One Stop Chip One Stop US$14.40
15
Buy Now
View Full Pricing & Stock Comparison

Features

Complete fully calibrated measurement/control system
Accurate rms-to-dc conversion from 50 Hz to 3.8 GHz
Input dynamic range of >65 dB: −52 dBm to +8 dBm in 50 Ω
Waveform and modulation independent, such as GSM/CDMA/TDMA
Linear-in-decibels output, scaled 50 mV/dB
Law conformance error of 0.5 dB
All functions temperature and supply stable
Operates from 4.5 V to 5.5 V at 24 mA
Power-down capability to 1.3 mW

Alternative Descriptions

DETECTOR/CONTROLLER | Richardson RFPD
50 Hz to 3.8 GHz 65d dB TruPwr | Analog Devices
POWER DETECTOR, 3.8GHZ, 0.5DB, TSSOP-16 | Farnell
Power Detector, 3.8Ghz, 0.5Db, Tssop-16 | Newark Electronics


Frequently Asked Questions

Where can I find additional details, specifications and documents for a AD8362ARUZ?

Additional datasheets, footprints and schematics for AD8362ARUZ are listed on our Part Details page. You can also find images and similar parts to AD8362ARUZ on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for AD8362ARUZ on our Product Comparison page. Access via the 'View Pricing & Stock' button to view AD8362ARUZ price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does AD8362ARUZ fall under?

The AD8362ARUZ is listed under Logarithmic RMS Detectors.

Can I view similar or alternative parts?

You can view similar parts to AD8362ARUZ when available in the Logarithmic RMS Detectors range under the specifications section at the bottom of the details page.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the AD8362ARUZ you can contact the distributor directly for product support, shipping queries etc.

Is the AD8362ARUZ RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Analog Devices.

Which authorised distributors for AD8362ARUZ have stock available?

Authorised distributors including Richardson RFPD, Analog Devices, Farnell, Newark Electronics and element14 have stock available or on a lead time for AD8362ARUZ.

How do I check stock and lead times for all distributors?

Stock availability and lead times will be displayed for AD8362ARUZ often in real-time on the comparison pages.

What if I can't find stock of AD8362ARUZ?

You can fill out our help required form which you can use to request a quote for AD8362ARUZ from some of our verified obsolescence suppliers. Alternatively, contact us via our web chat in the bottom left of your screen and one of our team will try to help.

We use cookies to improve your experience. See our privacy policy.
Okay