AD8312
Info : RECOMMENDED FOR NEW DESIGNS
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AD8312

50 MHz TO 3.5 GHz, 45 dB RF Detector

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 2
1ku List Price Starting From $1.56
Features
  • Complete RF detector function
  • Typical range: −45 dBm to 0 dBm, referencing 50 Ω
  • Frequency response from 50 MHz to 3.5 GHz
  • Temperature-stable linear-in-dB response
      Accurate to 3.5 GHz
  • Rapid Response: 85/120 ns (rise/fall)
  • Low Power: 12 mW at 2.7 V
Additional Details
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The AD8312 is a complete, low cost subsystem for the measurement of RF signals in the frequency range of 50 MHz to 3.5 GHz. It has a typical dynamic range of 45 dB and is intended for use in a wide variety of cellular handsets and other wireless devices. It provides a wider dynamic range and better accuracy than possible using discrete diode detectors. In particular, its temperature stability is excellent over the full operating range of −40°C to +85°C.

Its high sensitivity allows measurement at low power levels, thus reducing the amount of power that needs to be coupled to the detector. It is essentially a voltage-responding device, with a typical signal range of 1.25 mV to 224 mV rms or −45 dBm to 0 dBm, referencing 50 Ω.

For convenience, the signal is internally ac-coupled, using a 5 pF capacitor to a load of 3 kΩ in shunt with 1.3 pF. This high-pass coupling, with a corner at approximately 16 MHz, determines the lowest operating frequency. Therefore, the source may be dc grounded.

The AD8312 output, VOUT, increases from close to ground to about 1.2 V because the input signal level increases from 1.25 mV to 224 mV. A capacitor may be connected between the VOUT and CFLT pins when it is desirable to increase the time interval over which averaging of the input waveform occurs.

The AD8312 is available in a 6-ball, 1.0 mm × 1.5 mm, wafer-level chip scale package and consumes 4.2 mA from a 2.7 V to 5.5 V supply.

Applications

  • Cellular handsets (GSM, CDMA, WCDMA)
  • RSSI and TSSI for wireless terminal devices
  • Transmitter power measurement
Part Models 2
1ku List Price Starting From $1.56

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
AD8312ACBZ-P2
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AD8312ACBZ-P7
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Product Lifecycle

PCN

May 3, 2018

- 18_0071

Bump Site Transfer for 6" Wafer Bumping

Feb 28, 2012

- 11_0175

Shipping Changes for WLCSP Products with 8mm Carrier Tape Width

Filter by Model

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Part Models

Product Lifecycle

PCN

May 3, 2018

- 18_0071

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Feb 28, 2012

- 11_0175

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Shipping Changes for WLCSP Products with 8mm Carrier Tape Width

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

EVAL-AD8312

AD8312 Evaluation Board

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EVAL-AD8312

AD8312 Evaluation Board

AD8312 Evaluation Board

Product Detail

AD8312-EVALZ is a fully populated, 4-layer, FR4-based evaluation board. For normal operation, it requires a 2.7 V to 5 V/10 mA power supply. The power supply should be connected to the pins labeled VPOS and GND. The RF input signal is applied to the edge-mounted SMA type RF connector (RFIN). The detector output signal is accessible via the SMA connector labeled VOUT.


Resources

Tools & Simulations

Tools & Simulations 2

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