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參數(shù)資料
| 型號： | HFA3761IN |
| 廠商： | HARRIS SEMICONDUCTOR |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | 400MHz AGC and Quadrature IF Demodulator |
| 中文描述： | TELECOM, CELLULAR, RF AND BASEBAND CIRCUIT, PQFP80 |
| 文件頁數(shù)： | 1/9頁 |
| 文件大小： | 68K |
| 代理商： | HFA3761IN |
4-1
TM
HFA3761
400MHz AGC and Quadrature IF
Demodulator
The HFA3761 is a highly integrated
baseband converter for quadrature
demodulation applications. The
HFA3761 400MHz AGC and
quadrature IF demodulator is one of the
seven chips in the PRISM full duplex chip set (see Typical
Application Diagram). It features all the necessary blocks for
baseband demodulation of I and Q signals. It has a two
stage integrated AGC IF amplifier with 82dB of voltage gain
and 76dB of gain control range. Baseband antialiasing and
shaping filters are integrated in the design. Four filter
bandwidths are programmable via a two bit digital control
interface. In addition, these filters are continuously tunable
over a
±
20% frequency range via one external resistor. To
achieve broadband operation, the Local Oscillator
frequency input is required to be twice the desired
frequency of demodulation. A selectable buffered divide by
2 LO output and a stable reference voltage are provided for
convenience of the user. The device is housed in a thin 80
lead TQFP package well suited for PCMCIA board
applications.
Features
Integrates all IF and AGC Receive Functions
Broad Frequency Range . . . . . . . . . . 10MHz to 400MHz
I/Q Amplitude and Phase Balance . . . . 0.2dB, 2 Degrees
5th Order Programmable
Low Pass Filter. . . . . . . . . . . . . . . . . 2.2MHz to 17.6MHz
400MHz AGC Gain Strip . . . . . . . . . . . . . . . . . . . . . 82dB
AGC Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75dB
Low LO Drive Level . . . . . . . . . . . . . . . . . . . . . . . -15dBm
Fast AGC Switching . . . . . . . . . . . . . . . . . . . . . . . . . . 1
μ
s
Power Management/Standby Mode
Single Supply 2.7V to 5.5V Operation
Applications
Wireless Local Loop
Wireless Local Area Networks
PCMCIA Wireless Transceivers
ISM Systems
CDMA Radios
PCS/Wireless PBX
Simplified Block Diagram
Ordering Information
PART NUMBER
TEMP.
RANGE (
o
C)
PACKAGE
PKG. NO.
HFA3761IN
-40 to 85
80 Ld TQFP
Q80.14x14
0
o
/90
o
AGC1_IN
DEMOD_LO_IN
A
A
LPF_RXQ _OUT
DEMOD_LO_OUT
A
L
L
L
D
D
D
÷
2
L
L
2V
REF
L
LPF_RXI_OUT
LO_GND
AGC1_V
AGC
AGC2_V
AGC
AGC_SEL
I
Q
Data Sheet
July 1999
File Number
4236.4
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
Intersil and Design is a trademark of Intersil Corporation.
Copyright
Intersil Corporation 2000
PRISM is a registered trademark of Intersil Corporation. PRISM logo is a trademark of Intersil Corporation.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HFA3763 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:400MHz Quadrature Modulator and AGC |
| HFA3763IN | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:400MHz Quadrature Modulator and AGC |
| HFA3763IN WAF | 制造商:Harris Corporation 功能描述: |
| HFA3765 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:AGC and Quadrature IF Demodulator |
| HFA3765IA | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:AGC and Quadrature IF Demodulator |
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