AD8315:  50 dB GSM PA Controller

The AD8315 is a complete low cost subsystem for the precise control of RF power amplifiers operating in the frequency range 0.1 GHz to 2.5 GHz and over a typical dynamic range of 50 dB. It is ...More

AD8315:  50 dB GSM PA Controller

Product Description

The AD8315 is a complete low cost subsystem for the precise control of RF power amplifiers operating in the frequency range 0.1 GHz to 2.5 GHz and over a typical dynamic range of 50 dB. It is intended for use in cellular handsets and other battery-operated wireless devices. The log amp technique provides a much wider measurement range and better accuracy than controllers using diode detectors. In particular, its temperature stability is excellent over a specified range of -30°C to +85°C.

Its high sensitivity allows control at low signal levels, thus reducing the amount of power that needs to be coupled to the detector.

The AD8315 is available in MSOP and LFCSP packages and consumes 8.5 mA from a 2.7 V to 5.5 V supply. When powered down, the sleep current is 4 µA.

Features

  • Complete RF detector/controller function
  • >50 dB range at 0.9 GHz (-49 dBm to +2 dBm, re 50 Ω)
  • Accurate scaling from 0.1 GHz to 2.5 GHz
  • Temperature-stable linear-in-dB response
  • Log slope of 23 mV/dB, intercept at -60 dBm at 0.9 GHz
  • True integration function in control loop
  • Low power: 20 mW at 2.7 V, 38 mW at 5 V
  • Power-down to 10.8 µW

Diagrams

AD8315 Diagram
Functional Block Diagram for AD8315

Specifications

RF Frequency (MHz) 100 to 2500
Dynamic Range (dB) 50dB
Temp Stability (dB) ±1dB
Response Time (ns typ) 150ns
Voltage Supply (V) 2.7 to 5.5
Supply Current (max) 8.5mA
Package 8-Lead uSOIC

ADL5513 - 1 MHz to 4 GHz, 80 dB Logarithmic Detector/Controller

Subscribe to New Products Feed
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