DC747A

Demonstration circuit 747 is a log-linear RF/IF detector featuring the LT®5537. The LT5537 is a wide dynamic range RF/IF log detector, operational from below 10MHz to 1000MHz. The lower limit of the operating frequency range can be extended to near DC by the use of an external capacitor. The input dynamic range at 200MHz with ±3dB non linearity is 90dB (from -76dBm to 14dBm, single ended 50 ohm input). The detector output voltage slope is normally 20mV/dB and the typical temperature coefficient is 0.01dB/°C at 200MHz.

• Supply voltage range 2.7V to 5.25V at VCC= 3V, ENBL = 3V, TA = 25°C
• Supply current of 13.5mA at VCC= 3V, ENBL = 3V, TA = 25°C

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