AD8313ARMZ

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. This device maintains a high degree of log conformance for signal frequencies from 0.1GHz to 2.5GHz. Application is straight forward, requiring only a single supply of 2.7V to 5.5V and the addition of a suitable input and supply decoupling. Operating on a 3V supply, its 13.7mA consumption (for TA = 25°C) is only 41mW. A power-down feature is provided; the input is taken high to initiate a low current (20µA) sleep mode, with a threshold at half the supply voltage. It is used in application such as RF transmitter power amplifier setpoint control and level monitoring, logarithmic amplifier for RSSI measurement cellular base stations, radio link, radar etc.

• Small signal response time is 40ns typical
• Controller mode with error output
• Scaling stable over supply and temperature
• Input bias current is 10µA typical
• Complete and easy to use
• Power-down feature is 60mW at 3V
• Source current is 400µA typical
• Open-loop slew rate is 2.5V/µs typical
• Operating temperature is -40°C to +85°C
• Package style is 8-lead MSOP

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ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party