National LMV232 Data Sheet / Manual

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February

LM ual-C hannel Integrated ean quare ow er etector for

LMV232 Dual-Channel Integrated Mean Square Power Detector for CDMA WCDMA General Description Features

The LMV232 dual RF detector is designed for RF transmit >20 d B square-law detection range power measurement in mobile phones. This dual mean sequentially selectable RF inputs

square IC is especially suited for accurate power measure- Low power consumption shutdown mode ment of RF signals exhibiting high peak-to-average ratios

Externally configurable gain and LF filter bandwidth.

used in 3G and UMTS/CDMA applications. The LMV232

Internal 50Ω RF termination impedance

saves calibration steps and system certification and is highly

Optimized for use with d B directional coupler

accurate. The circuit operates with single supply from 2.5

Lead free 8-bump micro SMD package 1.5 1.5 0.6

to 3.3V.

The LMV232 contains mean square detector with two sequentially selectable RF inputs. The RF input power range

Applications

of the device has been optimized for use with d B

directional coupler, without the need for additional external 3G mobile communications components. single external RC combination between FB UMTS

and OUT provides an externally configurable gain and LF WCDMA filter bandwidth of the device.

CDMA2000

The device has two digital interfaces. shutdown function is TD-SCDMA available to set the device in low-power shutdown mode. In

RF control

case SD HIGH, the device is in shutdown, if SD LOW the

Wireless LAN

device is active. The Band-Select function controls the se-

PC Card and GPS modules

lection 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 micro SMD 1.5 1.5 0.6 mm package. This micro SMD package has the smallest footprint and height.

Typical Application

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