5507 View Datasheet(PDF) - Linear Technology

Part Name

Description

MFG CO.

5507

100kHz to 1GHz RF Power Detector

Linear Technology 

LTC5507

PI FU CTIO S

SHDN (Pin 1): Shutdown Input. A logic low or no-connect

on the SHDN pin places the part in shutdown mode. A logic

high enables the part. SHDN has an internal 150k pull

down resistor to ensure that the part is in shutdown when

the enable driver is in a tri-state condition.

GND (Pin 2): System Ground.

VOUT (Pin 3): Buffered and Level Shifted Detector Output

Voltage.

VCC (Pin 4): Power Supply Voltage, 2.7V to 6V. VCC should

be bypassed with 0.1µF and 100pF ceramic capacitors.

PCAP (Pin 5): Peak Detector Hold Capacitor. Capacitor

value is dependent on RF frequency. Capacitor must be

connected between PCAP and VCC.

RFIN (Pin 6): RF Input Voltage. Referenced to VCC. A

coupling capacitor must be used to connect to the RF

signal source. This pin has an internal 250Ω termination

and an internal Schottky diode detector.

BLOCK DIAGRA

VCC

4

RFSOURCE

C1

6

RFIN

250Ω

GAIN

COMPRESSION

SHDN

C2

VCC

5

PCAP

GND 2

60µA

60µA

C1 = C2

C2 (µF) ≥ 1 , f = LOWEST RF INPUT FREQUENCY (MHz)

30f

+

RF DET

–

150k

1

SHDN

Figure 2.

+

BUFFER

–

30k

30k

3 VOUT

100Ω

BIAS

5507 BD

5507f

4

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