LTC5507 Datasheet, PDF (1/8 Pages) Linear Technology – 100kHz to 1GHz RF Power Detector

LTC5507
100kHz to 1GHz
RF Power Detector
FEATURES
s _{Temperature Compensated Internal Schottky}
Diode RF Detector
s _{Wide Input Power Range: –34dBm to 14dBm}
s _{Ultra Wide Input Frequency Range: 100kHz to}
1000MHz
s _{Buffered Output}
s _{Wide VCC Range of 2.7V to 6V}
s _{Low Operating Current: 550µA}
s _{Low Shutdown Current: <2µA}
s _{Low Profile (1mm) ThinSOT}^TM _Package
U
APPLICATIO S
s _{Wireless Transceivers}
s _{Wireless and Cable Infrastructure}
s _{RF Power Alarm}
s _{Envelope Detector}
DESCRIPTIO
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
TYPICAL APPLICATIO
V_BAT
2.7V TO 6V
C2
RF
INPUT
LTC5507
4
V_CC
3
V_OUT
5 _PCAP
C1
6
RF_IN
GND ²
1
SHDN
5507 TA01
V_OUT
DETECTED
VOLTAGE
DISABLE ENABLE
Figure 1. 100kHz to 1000MHz RF Power Detector
Typical Detector Characteristics
at 100kHz, 100MHz and 1000MHz
10000
T_A = 25°C
V_CC = 2.7V TO 6V
1000
100kHz, 100MHz
1000MHz
100
–34
–26 –18 –10 –2 6 14
RF INPUT POWER (dBm)
5507 TA01b
5507f
1