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Updated at 17/06/2025 10:30:15(UTC+8)

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Description

Product Details
The AD8313 is a complete multistage demodulating logarithmic amplifier that can accurately convert an RF signal at its input to an equivalent decibel-scaled value at its dc output. The AD8313 maintains a high degree of log conformance for signal frequencies from 0.1 GHz to 2.5 GHz. Application is straightforward, requiring only a single supply of 2.7 V to 5.5 V and the addition of a suitable input and supply decoupling. Operating on a 3 V supply, its 13.7 mA consumption (for TA = 25°C) is only 41 mW. A power-down feature is provided; the input is taken high to initiate a low current (20 µA) sleep mode, with a threshold at half the supply voltage
The AD8313 is fabricated on Analog Devices, Inc., advanced 25 GHz silicon bipolar IC process and is available in an 8-lead MSOP package. The operating temperature range is −40°C to +85°C.
### Features and Benefits
Wide bandwidth:
0.1 GHz to 2.5 GHz min
High dynamic range:
70 dB to ±3.0 dB
High accuracy: ±1.0 dB over 65 dB range (@ 1.9 GHz)
Fast response:
40 ns full-scale typical
Controller mode with error output
Scaling stable over supply and temperature
Wide supply range:
2.7 V to 5.5 V
Low power:
40 mW at 3 V
Power-down feature:
60 mW at 3 V

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AD8313 Specifications

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