1FEATURES
2• Support of InGaP HBT, Bipolar Technology
• Quad-Band Operation
• Shutdown Mode for Power Save in RX Slot
• Integrated Ramp Filter
• 50 dB RF Detector
• GPRS Compliant
• External Loop Compensation Option
• Accurate Temperature Compensation
• WSON Package 3x3 mm and Fully Tested Die
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APPLICATIONS
• GSM/GPRS/TDMA/TD_SCDMA Mobile Phone
• Pulse RF Control
• Wireless LAN
• GSM/GPRS Power Amplifier Module
• Transmit Module

DESCRIPTION
The LMV242 is a power amplifier (PA) controller
intended for use within an RF transmit power control
loop in GSM/GPRS mobile phones. The LMV242
supports all single-supply PA’s including InGaP, HBT
and bipolar power amplifiers. The device operates
with a single supply from 2.6V to 5.5V.
Included in the PA controller are an RF detector, a
ramp filter and two selectable output drivers that
function as error amplifiers for two different bands.
The LMV242 input interface consists two analog and
two digital inputs. The analog inputs are the RF input,
Ramp voltage input. The digital inputs perform the
function of “Band Select” and “Shutdown/Transmit
Enable” respectively. The “Band Select” function enables either of two outputs, namely OUT1 when BS
= High, or output OUT2 when BS = Low. The output
that is not enabled is pulled low to the minimum
output voltage. The LMV242 is active in the case
TX_EN = High. When TX_EN = Low the device is in
a low power consumption shutdown mode. During
shutdown both outputs will be pulled low to the
minimum output voltage. Individual PA characteristics
are accommodated by a user selectable external RC
combination.
The LMV242 is offered in fully tested die form as well
as in a 10-lead WSON package and is therefore
especially suitable for small footprint PA module
solutions.