LTC5530 데이터 시트보기 (PDF) - Linear Technology

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LTC5530

Precision 300MHz to 7GHz RF Detector with Shutdown and Gain Adjustment

Linear Technology 

LTC5530

PI FU CTIO S

RFIN (Pin 1): RF Input Voltage. Referenced to VCC. A

coupling capacitor must be used to connect to the RF

signal source. The frequency range is 300MHz to 7GHz.

This pin has an internal 500Ω termination, an internal

Schottky diode detector and a peak detector capacitor.

GND (Pin 2): Ground.

SHDN (Pin 3): Shutdown Input. A logic low on the SHDN

pin places the part in shutdown mode. A logic high enables

the part. SHDN has an internal 160k pulldown resistor to

ensure that the part is in shutdown when no input is

applied. In shutdown VOUT is connected to ground via a

280Ω resistor.

VM (Pin 4): Negative Input to Buffer Amplifier.

VOUT (Pin 5): Detector Output.

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

be bypassed appropriately with ceramic capacitors.

BLOCK DIAGRA

RFSOURCE

VCC

6

1

RFIN

GND 2

BIAS

500Ω

500Ω

SHUTDOWN

31k

25pF

+

RF DET

24k

–

50µA

50µA

SD

40k

160k

3

SHDN

SD

+

BUFFER

–

SD

5 VOUT

4 VM

180Ω

100Ω

5530 BD

5530f

8

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