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LMV248  Product Folder

Dual Band GSM Power Controller
Generic P/N 248
General
Description		 Features Datasheet Package
& Models		 Samples
& Pricing		 Reliability
Metrics

Parametric Table Parametric Table
Temperature Min (deg C) -40 
Temperature Max (deg C) 85 
PLL Type - 
Channels (Channels) 2 
Application GSM, TDMA, CDMA, DCS, PCS, LAN 
Frequency Range Depends on external diodes 
Detector Ext Schottky diodes 
Detector Range 30dB 
Supply Min (Volt) 2.50 
Supply Max (Volt) 5 
Special Features Dual Band, Two PA control 

Datasheet

TitleSize in KbytesDate
View Online
Download
Receive via Email
LMV248 Dual Band GSM Power Controller 289 Kbytes 4-Sep-01 View Online Download Receive via Email

If you have trouble printing or viewing PDF file(s), see Printing Problems.

Package Availability, Models, Samples & Pricing

Part NumberPackageStatusModelsSamples &
Electronic
Orders		Budgetary PricingStd
Pack
Size		Package
Marking
TypePinsMSL/Lead-Free AvailabilityLead
Time		QtySPICEIBISQty$US each
LMV248LQLLP16StatusFull productionN/AN/A24 Hour Samples
Buy Now 		1K+$0.89reel
of
1000		NS
UZXYTT
LMV248
6-7 weeks50000
LMV248LQXLLP16StatusFull productionN/AN/A 1K+$0.89reel
of
4500		NS
UZXYTT
LMV248
6-7 weeks50000
LMV248 MDAUnpackaged DieFull productionN/AN/ASamples  tray
of
N/A		-
N/A0
LMV248 MDCUnpackaged DieFull productionN/AN/ASamples  tray
of
N/A		-
N/A0
LMV248 MWCWaferFull productionN/AN/A   wafer jar
of
N/A		-
N/A0

General Description

The LMV248 RF power amplifier controller allows simple implementation of transmit power control loops in GSM and DCS/PCS and mobile phones. The LMV248 supports, GaAs HBT and bipolar RF power amplifiers. The device operates from a single supply of 2.5V to 5V. The LMV248 includes an error amplifier with an input summing network, input and output band switches, input filters, and output drivers. Analog input signals processed are:

- Coupler/detector voltages from GSM and PCN band power amplifier outputs.

- Base band DAC ramp signal.

- Temperature compensation diode voltages.

- Pre-bias voltage for faster PA control.

Selection of the GSM or PCN output driver is made using the GSM/PCN band select pin.

The On/OFF pin allows rapid power up or shutdown of the device during Tx or Rx slots. In the off mode, both output drivers are set low for PA shutdown. In the on mode, the non-active driver will remain low for continued PA shutdown. A single external capacitor/resistor combination is used to adjust the closed loop frequency response.

The LMV248 replaces multiple discrete parts, reducing board area and cost. The LLP leadless package minimizes board footprint and permits flexible optimized PCB placement.

Features

  • Multi-band cellular operation (example: GSM, PCN)
  • Support of GaAs HBT and bipolar technology
  • Shutdown mode for power save in Rx slot (0.15µA)
  • Integrated ramp filter
  • Built-in current source for biasing Schottky diodes
  • Pre-biasing of PA control gate voltage (VHOME)
  • GPRS compliant
  • External loop compensation
  • Detector diode temperature compensation
  • Miniature packaging: LLP-16: 4mm x 4mm x 0.8mm

Applications

  • GSM mobile phone
  • TDMA RF control
  • Wireless LAN
  • PC and PDA modules
  • GPS navigation modules

Reliability Metrics

Part Number Process Early Failure Rate - Rejects Sample Size (EFR) PPM * Rel. Rejects Device Hours Long Term Failure Rates (FITS) MTTF
LMV248 MDACS0801322200586013460009011224278
LMV248 MDCCS0801322200586013460009011224278
LMV248 MWCCS0801322200586013460009011224278
LMV248LQCS0801322200586013460009011224278
LMV248LQXCS0801322200586013460009011224278

For more information on Reliablitity Metrics, please click here.


[Information as of 15-Jan-2004]

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