Key facts
- Brand
- Analog Devices
- Model
- AD8309
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-05-03
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Analog Devices AD8309 Logarithmic Amplifier Datasheet
The AD8309 is a complete IF limiting amplifier that provides an accurate logarithmic (decibel) measurement of the input signal (RSSI) over a 100 dB dynamic range. It operates from 5 MHz to 500 MHz, requires a single supply of +2.7 V to +6.5 V, and consumes about 16 mA in normal operation. The device features fully differential inputs, programmable limiter gain, and a differential RSSI output that scales at 20 mV/dB.
The datasheet includes detailed specifications, absolute maximum ratings, pin descriptions, ordering information, and theory of operation. It also provides performance graphs for RSSI slope, intercept, limiter response, and supply current versus enable voltage, helping designers integrate the AD8309 into high‑performance receivers and measurement equipment.
Analog Devices AD8309 specifications
| Frequency Range | 5 MHz – 500 MHz |
|---|---|
| Dynamic Range | 100 dB |
| Supply Voltage | +2.7 V to +6.5 V |
| RSSI Slope | 20 mV/dB |
| Differential Output Current | 10 mA |
Source: Analog Devices AD8309 Logarithmic Amplifier Datasheet
All Analog Devices AD8309 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What supply voltage range does the AD8309 require?
The AD8309 operates from a single supply of +2.7 V to +6.5 V.
What is the dynamic range of the AD8309?
The device provides a 100 dB dynamic range.
What is the usable frequency range of the AD8309?
The AD8309 operates from 5 MHz up to 500 MHz.
What supply voltage does the AD8309 require?
It can be powered from a single supply between 2.7 V and 6.5 V.