參數(shù)資料
型號： SLWS132
廠商： Texas Instruments, Inc.
英文描述： QUAD RECEIVER CHIP
中文描述： 四接收器芯片
文件頁數(shù)： 12/46頁
文件大?。?/td> 413K
代理商： SLWS132
GRAYCHIP, INC.
- 7 -
APRIL 27, 1999
GC4014 QUAD RECEIVER CHIP
DATA SHEET REV 0.6
This document contains information which may be changed at any time without notice
should be less than or equal to 7 and 2 respectively. The BIG_SCALE and SCALE settings are common to all
channels.
3.3.3
Coarse Channel Gain
The gain of each channel can be boosted up to 42 dB by shifting the output of the CIC filter up by 0 to 7 bits
2
COARSE
=
prior to rounding it to 16 bits. The coarse gain is:
, where COARSE ranges from 0 to 7. Overflows
in the coarse gain circuit are saturated to plus or minus full scale. The coarse gain is used to increase the gain of
an individual signal after the input bandwidth of the downconverter has been reduced by a factor of N in the CIC
filter. If the signal power across the input bandwidth is relatively flat, as is the case in most frequency division
multiplexed (FDM) systems, then one would want to boost the signal power out of the CIC filter by a factor of
. Each channel can be given its own coarse gain setting. Note that the final gain stage described in
Section 3.4 can boost the overall gain by up to 24 more dB.
3.3.4
The Compensating Decimate By Two Filter (CFIR)
The CIC/Coarse gain outputs are filtered by two stages of filtering. The first stage is a 21 tap decimate by
2 filter with two sets of fixed coefficients. The first set of coefficients is used in the normal mode to give a passband
which is flat (0.01 dB ripple) over 100% of the final output bandwidth and which has 85 dB of out of band rejection.
The filter also compensates for the droop associated with the CIC programmable decimation filter. The filter is
symmetric with the following taps:
29, -85, -308, -56, 1068, 1405, -2056, -6009, 1303, 21121, 32703
The narrow set of coefficients are intended for applications that need deeper stop bands or need
oversampled outputs. These requirement are common in cellular systems where out of band rejection requirements
can exceed 100 dB. The filter coefficients for the narrow mode are:
-98, -679, -2016, -3234, -2537, 850, 6053, 12060, 18230, 23239, 25212
The combined frequency response of the CIC and CFIR filter for both modes is shown below:
Figure 8. Combined CFIR and CIC Frequency Response
GAIN
GAIN
N
=
(a) Normal Mode
(b) Narrow Mode
相關(guān)PDF資料
PDF描述
SM-762A DC Tachometer Generators
SM-762B DC Tachometer Generators
SM-A2847 CRYSTAL CLOCK OSCILLATORS
SM-A284C CRYSTAL CLOCK OSCILLATORS
SM-2840 CRYSTAL CLOCK OSCILLATORS
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SLWSTK6000A 功能描述:DEV KIT WIRELESS EFR32MG 2.4GHZ 制造商:silicon labs 系列:Mighty Gecko 零件狀態(tài):有效 類型:收發(fā)器; 智能低功耗（BLE）藍(lán)牙? 4.x 頻率:2.4GHz 配套使用產(chǎn)品/相關(guān)產(chǎn)品:EFR32MG 所含物品:9 板，線纜，配件 標(biāo)準(zhǔn)包裝:1
SLWSTK6000B 功能描述:EFR32MG12 2.4GHZ MESH KIT 制造商:silicon labs 系列:Mighty Gecko 零件狀態(tài):在售 類型:收發(fā)器; 802.15.4（線程, ZigBee?） 頻率:2.4GHz 配套使用產(chǎn)品/相關(guān)產(chǎn)品:EFR32MG12 所含物品:板 標(biāo)準(zhǔn)包裝:1
SLWSTK6020A 功能描述:DEV KIT BLE EFR32BG 2.4GHZ 制造商:silicon labs 系列:Blue Gecko 零件狀態(tài):有效 類型:收發(fā)器; 智能低功耗（BLE）藍(lán)牙? 4.x 頻率:2.4GHz 配套使用產(chǎn)品/相關(guān)產(chǎn)品:EFR32BG 所含物品:3 板，線纜，配件 標(biāo)準(zhǔn)包裝:1
SLWSTK6020B 功能描述:EFR32 BLUE GECKO BLUETOOTH START 制造商:silicon labs 系列:Blue Gecko 零件狀態(tài):在售 類型:收發(fā)器; 智能低功耗（BLE）藍(lán)牙? 4.x 頻率:2.4GHz 配套使用產(chǎn)品/相關(guān)產(chǎn)品:EFR32BG13 所含物品:板 標(biāo)準(zhǔn)包裝:1
SLWSTK6060A 功能描述:DEV KIT EFR32FG 915MHZ 2.4GHZ 制造商:silicon labs 系列:Flex Gecko 零件狀態(tài):在售 類型:收發(fā)器 頻率:915MHz， 2.4GHz 配套使用產(chǎn)品/相關(guān)產(chǎn)品:EFR32FG 所含物品:板 標(biāo)準(zhǔn)包裝:1
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*