전자부품 데이터시트 검색엔진 |
|
ISL3984IR 데이터시트(PDF) 2 Page - Intersil Corporation |
|
ISL3984IR 데이터시트(HTML) 2 Page - Intersil Corporation |
2 / 7 page 2 The ISL3984 works seamlessly with the PRISM II and PRISM II.V WLAN chip set components to give you a highly integrated, cost effective 11Mb/s WLAN solution in the 2.4 to 2.5GHz ISM band. The ISL3984 is fabricated in the fastest SiGe BiCMOS process available allowing superior RF performance, normally found only in GaAs ICs. Cost effective functions, normally requiring external components, are integrated into one IC. The ISL3984 integrates the following functions in one compact 16 pin MLFP: • Two Stage, 30dB Gain RFPA, • Logarithmic power detect function (15dB Dynamic Range), • CMOS level compatible Power Up/Down function, • Single Supply, 2.7V to 3.6V Operation. The ISL3984 contains a highly linear RFPA designed to deliver 18dBm and meet an ACPR specification of -30dBc in the 2.4 to 2.5GHz ISM band. The performance of this two stage RFPA can be optimized by adjusting the bias current with a dedicated resistor. No external positive or negative power supplies are required to set the bias currents. The on chip bias network provides the optimum bias current temperature compensation when low TC external resistor is used. To get the best performance from the ISL3984, the output stage matching network can be tailored using external components. The ISL3984 power detect function provides a DC output voltage that is proportional to the logarithm of the output power. For an output power of 18dBm, the detector is accurate to within a 0.5dB. The slope of the detector output voltage is 100mV/dB over a 15dB dynamic range. A simple application of the detector is to provide in-line monitoring of the output power using a DC voltmeter. No longer is a power meter or spectrum analyzer required. A more value added application would use the HFA3861B/HFA3863 Baseband Processor to dynamically monitor the ISL3984 output power and to control transmit power by adjusting the AGC of the HFA3783 IF Quadrature Modem to provide the best possible error free data transfer rate for any given environment. Closed loop power control is very important feature which compensates for variability in the transmit chain (radio to radio, channel to channel, over temperature...). The ISL3984 power up/down feature integrates the power down capability onto the IC and requires no external components thus freeing up board space and reducing external component count and cost. When the CMOS compatible Power Enable (PE) pin is driven low, the total supply current drops to under 50 µA in, typically, 300ns. When the PE pin is driven high, the full ISL3984 output power is available in a few hundred nanoseconds. In summary, the ISL3984 RFPA provides a highly cost effective solution for the PA function by integrating many features that would require significant development time, drive up the total bill of materials cost and consume precious board space. It mates seamlessly with the other PRISM II ICs to provide a highly integrated, cost effective 11Mb/s WLAN solution in the 2.4 to 2.5GHz ISM band. Pin Descriptions PIN NUMBER NAME DESCRIPTION 1 BIAS_VCC Power Supply. 2 REXT Bias Resistor, biasing scheme independent of absolute temperature. 3 DS_VCC Driver Stage Power Supply. 4, 5 GND DC and RF Ground. 6 RF_OUT RF Output of the Power Amplifier. 7, 8, 9, 10 GND DC and RF Ground. 11 RF_IN RF Input of the Power Amplifier. 12 GND DC and RF Ground. 13 DET_OUT Detector Output. 14 VCC_DET Detector Power Supply. 15 PE Digital Input Control Pin to enable operation of the Power Amplifier. Enable logic level is high. 16 BIAS_GND DC and RF Ground. ISL3984 |
유사한 부품 번호 - ISL3984IR |
|
유사한 설명 - ISL3984IR |
|
|
링크 URL |
개인정보취급방침 |
ALLDATASHEET.CO.KR |
ALLDATASHEET 가 귀하에 도움이 되셨나요? [ DONATE ] |
Alldatasheet는? | 광고문의 | 운영자에게 연락하기 | 개인정보취급방침 | 링크교환 | 제조사별 검색 All Rights Reserved©Alldatasheet.com |
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 |