Product Summary
The AD8313ARMZ-REEL is a complete multistage demodulating logarithmic amplifier that can accurately convert an RF signal at its differ-ential input to an equivalent decibel-scaled value at its dc output. The AD8313ARMZ-REEL maintains a high degree of log conformance for signal frequencies from 0.1 GHz to 2.5 GHz and is useful over the range of 10 MHz to 3.5 GHz. The nominal input dynamic range is –65 dBm to 0 dBm (re: 50 Ω), and the sensitivity can be increased by 6 dB or more with a narrow-band input impedance matching network or a balun. 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. The AD8313ARMZ-REEL uses a cascade of eight amplifier/limiter cells, each having a nominal gain of 8 dB and a −3 dB bandwidth of 3.5 GHz. This produces a total midband gain of 64 dB.
Parametrics
Absolute maximum ratings: (1)Supply Voltage VS: 5.5 V; (2)VOUT, VSET, PWDN: 0 V, VPOS; (3)Input Power Differential (re: 50 Ω, 5.5 V): 25 dBm; (4)Input Power Single-Ended (re: 50 Ω, 5.5 V): 19 dBm; (5)Internal Power Dissipation: 200 mW; (6)θJA: 200℃/W; (7)Maximum Junction Temperature: 125℃; (8)Operating Temperature Range: –40℃ to +85℃; (9)Storage Temperature Range: –65℃ to +150℃.
Features
Features: (1)Wide bandwidth: 0.1 GHz to 2.5 GHz min; (2)High dynamic range: 70 dB to ±3.0 dB; (3)High accuracy: ±1.0 dB over 65 dB range (@ 1.9 GHz); (4)Fast response: 40 ns full-scale typical; (5)Controller mode with error output; (6)Scaling stable over supply and temperature; (7)Wide supply range: 2.7 V to 5.5 V; (8)Low power: 40 mW at 3 V; (9)Power-down feature: 60 mW at 3 V; (10)Complete and easy to use.
Diagrams
Image | Part No | Mfg | Description | Pricing (USD) |
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AD8313ARMZ-REEL |
IC LOG DETECTOR/CTRLR 8MSOP |
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AD8313ARMZ-REEL7 |
IC LOG DETECTOR/CTRLR 8-MSOP TR |
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