データシートサーチシステム
  Japanese  ▼
ALLDATASHEET.JP

X  

LMV232 データシート(PDF) 11 Page - Texas Instruments

部品番号 LMV232
部品情報  LMV232 Dual-Channel Integrated Mean Square Power Detector for CDMA & WCDMA
Download  20 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
メーカー  TI1 [Texas Instruments]
ホームページ  http://www.ti.com
Logo TI1 - Texas Instruments

LMV232 データシート(HTML) 11 Page - Texas Instruments

Back Button LMV232_16 Datasheet HTML 7Page - Texas Instruments LMV232_16 Datasheet HTML 8Page - Texas Instruments LMV232_16 Datasheet HTML 9Page - Texas Instruments LMV232_16 Datasheet HTML 10Page - Texas Instruments LMV232_16 Datasheet HTML 11Page - Texas Instruments LMV232_16 Datasheet HTML 12Page - Texas Instruments LMV232_16 Datasheet HTML 13Page - Texas Instruments LMV232_16 Datasheet HTML 14Page - Texas Instruments LMV232_16 Datasheet HTML 15Page - Texas Instruments Next Button
Zoom Inzoom in Zoom Outzoom out
 11 / 20 page
background image
ADC
-
+
FB
OUT
+
LMV232
VREF
RFB
IOS
IDET
+
-
-
+
FB
OUT
+
LMV232
VREF
RFB
IOS
IDET
LMV232
www.ti.com
SNWS017C – DECEMBER 2004 – REVISED MARCH 2013
Figure 24. Pedestal Voltage
For low input power levels, the pedestal variation VPEDESTAL is the dominant cause of error. Besides temperature
variation of the pedestal voltage, which limits the lower end of the range, the pedestal voltage can also vary from
part-to-part. By applying a suitable measurement strategy, the pedestal voltage error contribution can be
significantly reduced or eliminated completely.
POWER MEASUREMENT STRATEGIES
This section describes the measurement strategies to reduce or eliminate the pedestal voltage variation. Which
strategy is chosen depends on the possibilities for a factory trim and implementation of calibration procedures.
Since the pedestal voltage is the reference level for the LMV232, it needs to be calibrated/measured at least
once to eliminate part-to-part spread. This is required to determine the exact detector output signal. Because of
process tolerances, the absolute part-to-part variation of the output voltage in the absence of RF input power will
be in the order of 5 - 10%. All measurement strategies discussed eliminate this part-to-part spread.
Strategy 1: Elimination of Part-to-Part Spread at Room Temperature Only
In this strategy, the pedestal voltage is determined once during manufacturing and stored into the memory of the
phone. At each power measurement this stored pedestal level is digitally subtracted from the measured output
signal of the LMV232 during normal operation. The procedure is thus:
Measure the detector output in the absence of RF power during manufacturing.
Store the output voltage value in the cell phone memory (after it is analog-to-digital converted).
Subtract the stored value from each detector output reading.
Figure 25. Strategy 1: Room Temperature Calibration
Copyright © 2004–2013, Texas Instruments Incorporated
Submit Documentation Feedback
11
Product Folder Links: LMV232


同様の部品番号 - LMV232_16

メーカー部品番号データシート部品情報
logo
Texas Instruments
LMV232 TI-LMV232_15 Datasheet
1Mb / 20P
[Old version datasheet]   LMV232 Dual-Channel Integrated Mean Square Power Detector for CDMA & WCDMA
More results

同様の説明 - LMV232_16

メーカー部品番号データシート部品情報
logo
Texas Instruments
LMV232 TI-LMV232_15 Datasheet
1Mb / 20P
[Old version datasheet]   LMV232 Dual-Channel Integrated Mean Square Power Detector for CDMA & WCDMA
logo
National Semiconductor ...
LMV232 NSC-LMV232 Datasheet
779Kb / 13P
   Dual-Channel Integrated Mean Square Power Detector for CDMA & WCDMA
LMV225 NSC-LMV225 Datasheet
1Mb / 21P
   RF Power Detector for CDMA and WCDMA
logo
Texas Instruments
LMV225 TI1-LMV225 Datasheet
2Mb / 39P
[Old version datasheet]   RF Power Detector for CDMA and WCDMA
LMV225 TI1-LMV225_14 Datasheet
1Mb / 30P
[Old version datasheet]   RF Power Detector for CDMA and WCDMA
logo
National Semiconductor ...
LMV227 NSC-LMV227 Datasheet
739Kb / 12P
   Production RF Tested, RF Power Detector for CDMA and WCDMA
logo
Texas Instruments
LMV225SD TI-LMV225SD Datasheet
947Kb / 30P
[Old version datasheet]   LMV225/LMV226/LMV228 RF Power Detector for CDMA and WCDMA
LMV225SDX TI-LMV225SDX Datasheet
947Kb / 30P
[Old version datasheet]   LMV225/LMV226/LMV228 RF Power Detector for CDMA and WCDMA
LMV225 TI-LMV225_15 Datasheet
2Mb / 37P
[Old version datasheet]   LMV225/LMV226/LMV228 RF Power Detector for CDMA and WCDMA
LMV225 TI1-LMV225_16 Datasheet
2Mb / 37P
[Old version datasheet]   LMV225/LMV226/LMV228 RF Power Detector for CDMA and WCDMA
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20


データシート ダウンロード

Go To PDF Page


リンク URL




プライバシーポリシー
ALLDATASHEET.JP
ALLDATASHEETはお客様のビジネスに役立ちますか?  [ DONATE ] 

Alldatasheetは   |   広告   |   お問い合わせ   |   プライバシーポリシー   |   リンク交換   |   メーカーリスト
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com