FEATURES

Multistage demodulating logarithmic amplifier

Voltage output, rise time <15 ns

High current capacity: 25 mA into grounded RL

95 dB dynamic range: −91 dBV to +4 dBV

Single supply of 2.7 V min at 8 mA typ

DC to 440 MHz operation, ±0.4 dB linearity

Slope of +24 mV/dB, intercept of −108 dBV

Highly stable scaling over temperature

Fully differential dc-coupled signal path

100 ns power-up time, 1 mA sleep current

APPLICATIONS

Conversion of signal level to decibel form

Transmitter antenna power measurement

Receiver signal strength indication (RSSI)

Low cost radar and sonar signal processing

Network and spectrum analyzers

Signal-level determination down to 20 Hz

True-decibel ac mode for multimeters