AD8312:  50 MHz to 3.5 GHz, 45 dB RF Log Detector

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 ...More

AD8312:  50 MHz to 3.5 GHz, 45 dB RF Log Detector

Product Description

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 re 50 Ω.

Features

  • Complete RF Detector Function
  • Typical Range: -45 dBm to 0 dBm re 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
  • Temperature range of -40°C to +85°C
  • Available in a 6-ball wafer-level chip scale package, 1.0 mm x 1.5 mm

Diagrams

AD8312 Diagram
Functional Block Diagram for AD8312

Specifications

RF Frequency (MHz) 50 to 3500
Dynamic Range (dB) 45dB
Temp Stability (dB) ±0.5dB
Response Time (ns typ) 70ns
Voltage Supply (V) 2.7 to 5.5
Supply Current (max) 4.2mA
Power Consumption (mW) 12mW
Package WLCSP

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Part# Product Description RF Frequency (MHz) Dynamic Range (dB) Temp Stability (dB) Response Time (ns typ) Voltage Supply (V) Supply Current (max) Package Price* (1000-4999)
AD606 Limiter Output - 80 - 400 4.5 to 5.5 13 16-Lead DIP, 16-Lead SOIC $22.00
AD640 Military Specified Part Available - 50 ±1 10 +/- 4.5 to +/- 7.5 44 20-Lead DIP, 20-Lead LCC, 20-Lead PLCC $36.48
AD641 Military Specified Part Available - 44 ±1 10 +/- 4.5 to +/- 7.5 44 20-Lead DIP, 20-Lead LCC, 20-Lead PLCC $32.82
AD8302 Dual-Channel Gain and Phase Outputs 2,700 60 ±1 60 2.7 to 5.5 19 14-Lead TSSOP $12.14
AD8306 Military Specified Part Available 5 to 400 100 ±1 73 2.7 to 5.5 16 16-Lead SOP $14.67
AD8307 High Dynamic Range dc to 500 92 ±1 400 2.7 to 5.5 8 8-Lead SOIC/DIP $6.07
AD8309 Limiter Output 5 to 500 100 ±1 67 2.7 to 5.5 16 16-Lead TSSOP $7.84
AD8310 High Dynamic Range dc to 440 100 ±1 15 2.7 to 5.5 8 8-Lead SOIC $4.00
AD8311 Low Power for Battery Operation 100 to 2500 50 ±0.5 150 2.7 to 5.5 8.5 WLCSP $1.27
AD8312 Low Power for Battery Operation 50 to 3500 45 ±0.5 70 2.7 to 5.5 4.2 WLCSP $1.27
AD8313 Industry Standard 100 to 2500 70 ±1.25 40 2.7 to 5.5 14 8-Lead uSOIC $7.99
AD8314 Industry Standard 100 to 2700 45 ±1 70 2.7 to 5.5 4.5 8-Lead uSOIC/CSP $1.10
AD8315 Low Power for Battery Operation 100 to 2500 50 ±1 150 2.7 to 5.5 8.5 8-Lead uSOIC $4.00
AD8317 Available in Die 1 to 10000 55 ±0.5 6 3 to 5.5 20 8-Lead CSP $3.98
AD8318 Integrated Temp Sensor 1 to 8000 70 ±0.5 10 4.5 to 5.5 68 16-Lead CSP $5.05
AD8319 Pin-compatible with AD8317 1 to 10000 45 ±0.5 6 3 to 5.5 22