AD8313ARMZ-REEL7

Product Summary

The AD8313ARMZ-REEL7 is a 0.1 GHz to 2.5 GHz 70 dB logarithmic detector/controller. The applications are: RF transmitter power amplifier setpoint control and level monitoring; Logarithmic amplifier for RSSI measurement cellular base stations, radio link, radar. The AD8313ARMZ-REEL7 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-REEL7 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. Operating on a 3 V supply, its 13.7 mA consumption (for TA = 25℃) 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.

Parametrics

AD8313ARMZ-REEL7 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

AD8313ARMZ-REEL7 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