Datasheet LTC5505-1, LTC5505-2 (Analog Devices)

LTC5505-1/LTC5505-2 RF Power Detector with Buffered Output and >40dB Dynamic Range
U FEATURES DESCRIPTIO
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Internal Schottky Diode RF Detector with Two Input
The LTC®5505-X is an RF power detector for RF applica-
Power Ranges:
tions operating in the 300MHz to 3.5GHz range. A tem-
LTC5505-1, –28dBm to 18dBm
perature compensated Schottky diode peak detector and
LTC5505-2, –32dBm to 12dBm
buffer amplifier are combined in a small 5-pin ThinSOT ■
Wide Input Frequency Range: 300MHz to 3GHz
package. The supply voltage range is optimized for opera-
(LTC5505-1); 300MHz to 3.5GHz (LTC5505-2)
tion from a single lithium-ion cell or 3xNiMH. ■
Temperature Compensated
The RF input voltage is peak detected using an on-chip ■
Buffered Detector Output
Schottky diode. The detected voltage is buffered and ■
Wide VCC Range of 2.7V to 6V
supplied to the VOUT pin. A power saving shutdown mode ■ Low Operating Current: 0.5mA reduces supply current to less than 2µA. ■ Low Shutdown Current: <2µA ■ Low Profile (1mm) ThinSOTTM Package The LTC5505-1 operates with input power levels from –28dBm to 18dBm. The LTC5505-2 operates with input
U
power levels from –32dBm to 12dBm.
APPLICATIO S
, LTC and LT are registered trademarks of Linear Technology Corporation. ThinSOT is a trademark of Linear Technology Corporation ■ Multimode Mobile Phone Products ■ PCS Devices ■ Wireless Data Modems ■ Wireless and Cable Infrastructure ■ RF Power Alarm ■ Envelope Detector
U TYPICAL APPLICATIO Dual Band Mobile Phone Tx Power Control
C1 R1 0.3pF 100Ω RF LTC5505-X 1 5 Tx PA MODULE V RF CC IN DIPLEXER C2 CELL BAND 2 0.1µF Li-Ion GND 3 4 V DISABLE ENABLE SHDN OUT PCS BAND MOBILE PHONE DSP VPC 5505 TA01 BSE 5505f 1