Datasheet LTC5508 (Analog Devices) - 6

LTC5508
U U U PI FU CTIO S SHDN (Pin 1):
Shutdown Input. A logic low on the SHDN
VCC (Pin 4):
Power Supply Voltage, 2.7V to 6V. VCC should pin places the part in shutdown mode. A logic high enables be bypassed appropriately with ceramic capacitors. the part. SHDN has an internal 150k pull down resistor to
RF
ensure that the part is in shutdown when no input is
IN (Pin 6):
RF Input Voltage. Referenced to VCC. A coupling capacitor must be used to connect to the RF applied. signal source. The frequency range is 300MHz to 7GHz.
GND (Pin 2, 5):
Ground. This pin has an internal 250Ω termination, an internal Schottky diode detector and a peak detector capacitor.
VOUT (Pin 3):
Detector Output.
W BLOCK DIAGRA
RFSOURCE 12pF TO 200pF (DEPENDING ON APPLICATION) VCC 4 GAIN + COMPRESSION BUFFER 3 VOUT – SHDN 30k 250Ω 6 RFIN 30k 100Ω 100 20k Ω 28pF + RF DET 130mV 20k – BIAS 60µA 60µA 40k 150k GND 2 GND 5 5508 BD 1 SHDN 5508fa 6