1FEATURES
• >20 dB Square-Law Detection Range
• 2 Sequentially Selectable RF Inputs
• Low Power Consumption Shutdown Mode
• Externally Configurable Gain and LF Filter
Bandwidth.
• Internal 50Ω RF Termination Impedance
• Optimized for Use with 20 dB Directional
Coupler
• Lead Free 8-Bump DSBGA Package 1.5 x 1.5 x
0.6 mm

APPLICATIONS
• 3G Mobile Communications
• UMTS
• WCDMA
• CDMA2000
• TD-SCDMA
• RF Control
• Wireless LAN
• PC Card and GPS Modules

DESCRIPTION
The LMV232 dual RF detector is designed for RF
transmit power measurement in mobile phones. This
dual mean square IC is especially suited for accurate
power measurement of RF signals exhibiting high
peak-to-average ratios used in 3G and UMTS/CDMA
applications. The LMV232 saves calibration steps
and system certification and is highly accurate. The
circuit operates with a single supply from 2.5 to 3.3V.
The LMV232 contains a mean square detector with
two sequentially selectable RF inputs. The RF input
power range of the device has been optimized for use
with a 20 dB directional coupler, without the need for
additional external components. A single external RC
combination between FB and OUT provides an
externally configurable gain and LF filter bandwidth of the device.
The device has two digital interfaces. A shutdown
function is available to set the device in a low-power
shutdown mode. In case SD = HIGH, the device is in
shutdown, if SD = LOW the device is active. The
Band-Select function controls the selection of the active RF input channel. In case BS = HIGH, RFIN1 is
active. In case BS = LOW, RFIN2 is active.
The dual mean square detector is offered in an 8-
bump DSBGA 1.5 x 1.5 x 0.6 mm package. This
DSBGA package has the smallest footprint and
height.