Key facts
- Brand
- Analog Devices
- Model
- AD8317
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-05-03
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Analog Devices AD8317 Log Detector/Controller Datasheet
The AD8317 is a demodulating logarithmic amplifier designed for RF measurement and power‑control applications. It operates from 1 MHz up to 10 GHz, providing a 55 dB dynamic range and high accuracy (±1 dB over temperature). Typical applications include RF transmitter PA set‑point control, power monitoring in radio links, and RSSI measurement in base stations, WLANs, WiMAX and radars.
Key features include a small 2 mm × 3 mm LFCSP package, supply voltage of 3.0 V to 5.5 V, 22 mA typical quiescent current, pulse response time of 6 ns (fall) / 10 ns (rise), and a logarithmic slope of –22 mV/dB. The device offers both measurement mode (VOUT provides a decreasing linear‑in‑dB output) and controller mode (VSET controls external amplifiers).
Analog Devices AD8317 specifications
| Frequency range | 1 MHz to 10 GHz |
|---|---|
| Dynamic range | 55 dB |
| Supply voltage | 3.0 V to 5.5 V |
| Quiescent current | 22 mA typical |
| Pulse response time | 6 ns fall / 10 ns rise |
| Logarithmic slope (measurement mode) | –22 mV/dB |
| Input impedance (typical) | 1500 Ω || 0.33 pF |
| Operating temperature range | –40 °C to +85 °C |
Source: Analog Devices AD8317 Log Detector/Controller Datasheet
All Analog Devices AD8317 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the frequency range of the AD8317?
The AD8317 operates from 1 MHz up to 10 GHz.
From: Analog Devices AD8317 Log Detector/Controller Datasheet
What supply voltage does the AD8317 require?
It requires a supply voltage between 3.0 V and 5.5 V.
From: Analog Devices AD8317 Log Detector/Controller Datasheet
What is the input frequency range of the AD8317?
The AD8317 operates from 1 MHz to 10 GHz.
What supply voltage does the AD8317 require?
It requires a supply voltage between 3.0 V and 5.5 V.