Features and Benefits
- Complete, Fully Calibrated Log-Limiting IF Amplifier
- 100 dB Dynamic Range: –91 dBV to +9 dBV
- Stable RSSI Scaling Over Temperature and Supplies:
20 mV/dB Slope, –95 dBm Intercept
±0.4 dB RSSI Linearity up to 200 MHz
- Fully Differential Inputs, RIN = 1 kΩ, CIN = 2.5 pF
- Single Supply of +2.7 V to +6.5 V at 16 mA Typical
- Programmable Limiter Gain and Output Current
Differential Outputs to 10 mA,
2.4 V p-p
Overall Gain 90 dB, Bandwidth 400 MHz
Constant Phase (Typical ±56 psDelay Skew)
- 500 ns Power-Up Time, <1 mA Sleep Current
The AD8306 is a complete IF limiting amplifier, providing both an accurate logarithmic (decibel) measure of the input signal (the RSSI function) over a dynamic range of 100 dB, and a programmable limiter output, useful from 5 MHz to 400 MHz.
An evaluation board is available for this product and may be ordered using the following product number: AD8306-EVAL. Schematic and layout for this evaluation board is contained in the product datasheet.
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
AD8306-EVALZ is a fully populated, 4-layer, FR4-based, full featured evaluation board designed to allow easy evaluation of all features of the AD8306. RF input, limiter output and VLOG output SMA connections with single ended setups are featured. There is an option of full differential signaling on the RF input and limiter output at card edge if the user desires. Access to the +5V/16 mA supply is achieved with clip leads to the Vs and COM testpoints; it has a range from +2.7 to +6.5V.
Documentation & Resources
Noise Figure and Logarithmic Amplifiers [The Wit and Wisdom of Dr. Leif—6]6/1/2008 Analog Dialogue
Log amps and directional couplers enable VSWR detection1/1/2007
Measuring the RF Power in CDMA2000 and W-CDMA High Power Amplifiers (HPAs)11/1/2005
Detecting Fast RF Bursts using Log Amps12/1/2002
Make Precise Base-Station Power Measurements11/2/2002
Accurate Gain/Phase Measurement at Radio Frequencies up to 2.5 GHz10/1/2001 Analog Dialogue
Measurement and Control of RF Power (Part III)2/9/2001
Measurement and Control of RF Power (Part II)12/1/2000
Measurement and Control of RF Power (Part I)10/19/2000
Design a Logamp RF Pulse Detector1/1/2000
Ask The Applications Engineer—28: Logarithmic Amplifiers Explained3/1/1999 Analog Dialogue
Tools & Simulations
ADIsimPLL enables the rapid and reliable evaluation of new high performance PLL products from ADI. It is the most comprehensive PLL Synthesizer design and simulation tool available today. Simulations performed include all key non-linear effects that are significant in affecting PLL performance. ADIsimPLL removes at least one iteration from the design process, thereby speeding the design- to-market.
ADIsimRF is an easy-to-use RF signal chain calculator. Cascaded gain, noise, distortion and power consumption can be calculated, plotted and exported for signal chains with up to 50 stages. ADIsimRF also includes an extensive data base of device models for ADI’s RF and mixed signal components.
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
Sample & Buy
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Buy Now Pricing
(**) Displayed Buy Now Price and Price Range is based on small quantity orders.
(*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.