The LMH2100 is a 40-dB RF power detector intended for use in CDMA and WCDMA applications.
The device has an RF frequency range from 50 MHz to
4 GHz. It provides an accurate temperature and supply compensated output voltage that relates
linearly to the RF input power in dBm. The circuit operates with a single supply from 2.7 V to 3.3
V.
The LMH2100 has an RF power detection range from −45 dBm to −5 dBm, and is ideally suited
for direct use in combination with a 30-dB directional coupler. Additional low-pass filtering of
the output signal can be realized by means of an external resistor and capacitor.
shows a detector with an additional output low pass filter. The
filter frequency is set with RS and CS.
shows a detector with an additional feedback low pass filter.
Resistor RP is optional and will lower the Trans impedance gain
(RTRANS). The filter frequency is set with
CP//CTRANS and
RP//RTRANS.
The device is active for Enable = High; otherwise it is in a low power-consumption
shutdown mode. To save power and prevent discharge of an external filter capacitance, the output
(OUT) is high-impedance during shutdown.
For all available packages, see the orderable addendum at the
end of the data sheet.
The LMH2100 is a 40-dB RF power detector intended for use in CDMA and WCDMA applications.
The device has an RF frequency range from 50 MHz to
4 GHz. It provides an accurate temperature and supply compensated output voltage that relates
linearly to the RF input power in dBm. The circuit operates with a single supply from 2.7 V to 3.3
V.
The LMH2100 has an RF power detection range from −45 dBm to −5 dBm, and is ideally suited
for direct use in combination with a 30-dB directional coupler. Additional low-pass filtering of
the output signal can be realized by means of an external resistor and capacitor.
shows a detector with an additional output low pass filter. The
filter frequency is set with RS and CS.
shows a detector with an additional feedback low pass filter.
Resistor RP is optional and will lower the Trans impedance gain
(RTRANS). The filter frequency is set with
CP//CTRANS and
RP//RTRANS.
The device is active for Enable = High; otherwise it is in a low power-consumption
shutdown mode. To save power and prevent discharge of an external filter capacitance, the output
(OUT) is high-impedance during shutdown.
For all available packages, see the orderable addendum at the
end of the data sheet.