Datasheet

LTC5507
1
5507f
APPLICATIO S
U
DESCRIPTIO
U
FEATURES
TYPICAL APPLICATIO
U
■
Wireless Transceivers
■
Wireless and Cable Infrastructure
■
RF Power Alarm
■
Envelope Detector
■
Temperature Compensated Internal Schottky
Diode RF Detector
■
Wide Input Power Range: –34dBm to 14dBm
■
Ultra Wide Input Frequency Range: 100kHz to
1000MHz
■
Buffered Output
■
Wide V
CC
Range of 2.7V to 6V
■
Low Operating Current: 550µA
■
Low Shutdown Current: <2µA
■
Low Profile (1mm) ThinSOT
TM
Package
100kHz to 1GHz
RF Power Detector
The LTC
®
5507 is an RF power detector for applications
operating from 100kHz to 1000MHz. The input frequency
range is determined by an external capacitor. A tempera-
ture-compensated Schottky diode peak detector and buffer
amplifier are combined in a small 6-pin ThinSOT package.
The RF input voltage is peak detected using an on-chip
Schottky diode and external capacitor. The detected volt-
age is buffered and supplied to the V
OUT
pin. A power
saving shutdown mode reduces supply current to less
than 2µA.
, LTC and LT are registered trademarks of Linear Technology Corporation.
ThinSOT is a trademark of Linear Technology Corporation
5507 TA01
V
OUT
GND
SHDN
V
CC
PCAP
RF
IN
LTC5507
4
5
6
3
2
1
V
OUT
DETECTED
VOLTAGE
V
BAT
2.7V TO 6V
C2
C1
RF
INPUT
DISABLE ENABLE
Figure 1. 100kHz to 1000MHz RF Power Detector
Typical Detector Characteristics
at 100kHz, 100MHz and 1000MHz
RF INPUT POWER (dBm)
V
OUT
OUTPUT VOLTAGE (mV)
10000
5507 TA01b
100
1000
–26 6 14–2–10–18
–34
100kHz, 100MHz
1000MHz
T
A
= 25°C
V
CC
= 2.7V TO 6V