LMV242LDX/NOPB National Semiconductor, LMV242LDX/NOPB Datasheet

IC POWER AMP CTLR GSM/GPRS 10LLP

LMV242LDX/NOPB

Manufacturer Part Number
LMV242LDX/NOPB
Description
IC POWER AMP CTLR GSM/GPRS 10LLP
Manufacturer
National Semiconductor
Datasheet

Specifications of LMV242LDX/NOPB

Rf Type
Cellular, GSM, GPRS, TDMA, TD-SCDMA, WLL
Frequency
450MHz ~ 2GHz
Features
Power Amplifier Controller
Package / Case
10-LLP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
LMV242LDX
© 2004 National Semiconductor Corporation
LMV242
Dual Output, Quad-Band GSM/GPRS Power Amplifier
Controller
General 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 am-
plifiers 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 combina-
tion.
The LMV242 is offered in fully tested die form as well as in a
10-lead LLP package and is therefore especially suitable for
small footprint PA module solutions.
Typical Application
VIP
®
is a registered trademark of National Semiconductor Corporation.
DS200795
Features
n Support of InGaP HBT, bipolar technology
n Quad-band operation
n Shutdown mode for power save in R
n Integrated ramp filter
n 50 dB RF detector
n GPRS compliant
n External loop compensation option
n Accurate temperature compensation
n LLP package 3x3 mm and fully tested die sales
Applications
n GSM/GPRS/TDMA/TD_SCDMA mobile phone
n Pulse RF control
n Wireless LAN
n GSM/GPRS power amplifier module
n Transmit module
20079501
X
slot
www.national.com
July 2004

Related parts for LMV242LDX/NOPB

LMV242LDX/NOPB Summary of contents

Page 1

... The LMV242 is offered in fully tested die form as well 10-lead LLP package and is therefore especially suitable for small footprint PA module solutions. Typical Application VIP ® registered trademark of National Semiconductor Corporation. © 2004 National Semiconductor Corporation Features n Support of InGaP HBT, bipolar technology n Quad-band operation n Shutdown mode for power save in R ...

Page 2

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage V - GND DD ESD Tolerance (Note 2) Human Body Model Machine Model Storage Temperature Range Junction Temperature (Note 6) 2.6V Electrical Characteristics V = 2.6V. Boldface limits apply at temperature extremes (Note 4). ...

Page 3

Electrical Characteristics V = 2.6V. Boldface limits apply at temperature extremes (Note 4). (Continued) DD Symbol Parameter V Output Swing from Rail O I Output Short Circuit Current O (Note 3) e Output Referred Noise n SR Slew Rate ...

Page 4

Electrical Characteristics V = 5.0V. Boldface limits apply at temperature extremes (Note 4). (Continued) DD Symbol Parameter Error Amplifier GBW Gain-Bandwidth Product V Output Swing from Rail O I Output Short Circuit Current O (Note 3) e Output Referred ...

Page 5

Bond Pad mechanical Dimensions Signal Name Pad Number Out 1 Out 2 Comp2 RAMP TX_EN BS Comp1 GND Note: Dimensions of the bond pad coordinates are in µm Origin of the coordinates: center of the ...

Page 6

Ordering Information Package Part Number LMV242LD 10-Pin LLP LMV242LDX LMV242MDA Tested and Wafer Form LMV242MWA Block Diagram www.national.com Package Marking Transport Media 1k Units Tape and Reel 242LD 4.5k Units tape and Reel 300 Units Waffle Pack No Mark 25 ...

Page 7

Typical Performance Characteristics Supply Current vs. Supply Voltage V and Log Conformance vs. RF Input Power OUT @ 900 MHz V and Log Conformance vs. RF Input Power OUT @ 1900 MHz Unless otherwise specified and Log Conformance ...

Page 8

Typical Performance Characteristics 25˚C. (Continued) Logarithmic Slope vs. Frequency RF Input Impedance vs. Frequency @ Resistance and Reactance I vs. V COMP RAMP www.national.com Unless otherwise specified, V Logarithmic Intercept vs. Frequency 20079516 Gain and Phase vs. Frequency 20079518 20079520 ...

Page 9

Typical Performance Characteristics 25˚C. (Continued) Sourcing Current vs. Output Voltage Output Voltage vs. Sourcing Current Closed Loop P (PA) vs OUT RAMP Unless otherwise specified, V Sinking Current vs. Output Voltage 20079510 Output Voltage vs. Sinking Current 20079512 ...

Page 10

Typical Performance Characteristics 25˚C. (Continued) Closed Loop P (PA) vs. V OUT RAMP Band Closed Loop DCS-1800 MHz Band www.national.com Unless otherwise specified PCS 1900 MHz Closed Loop GSM- 900 MHz Band 20079524 Closed Loop PCS-1900 MHz Band ...

Page 11

... Application Section POWER CONTROL PRINCIPLES The LMV242 is a member of the power loop controller family of National Semiconductor, for quad-band TDMA/GSM solu- tions. The typical application diagram demonstrates a basic approach for implementing the quad-band solution around an RF Power Amplifier (PA). The LMV242 contains Logamp detector and interfaces directly with the directional coupler ...

Page 12

Application Section (Continued) We will assume initially that the output of the some low level and that the V voltage is at 1V. The V/I RAMP converter converts the V voltage to a sinking current RAMP I ...

Page 13

Application Section (Continued) Extra attenuation Z between the coupler and the RF input of the LMV242 can be achieved by 2 resistors R according to Figure 3, where LOG ( ...

Page 14

Application Section (Continued) The control loop can be configured by the following vari- ables: • Lead time TX_EN event vs. start GSM burst www.national.com • Lead time V • Ramp profile • Loop compensation FIGURE 5. Timing V vs. RF ...

Page 15

Die / Wafer Characteristics Fabrication Attributes Physical Die Identification LMV242A Die Step A Physical Attributes Wafer Diameter 200 mm Die Size (Drawn) 889 µm x 1562 µm 35.0 mils x 61.5 mils Thickness 216 µm Nominal Min Pitch 123 µm ...

Page 16

... BANNED SUBSTANCE COMPLIANCE National Semiconductor certifies that the products and packing materials meet the provisions of the Customer Products Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification (CSP-9-111S2) and contain no ‘‘Banned Substances’’ as defined in CSP-9-111S2. ...

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