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Numéro de référence | HFA3726 | ||
Description | 400MHz Quadrature IF Modulator/Demodulator | ||
Fabricant | Intersil Corporation | ||
Logo | |||
1 Page
Data Sheet
HFA3726
November 1999 File Number 4310.3
400MHz Quadrature IF
Modulator/Demodulator
™ The HFA3726 is a highly integrated
baseband converter for quadrature
modulation applications. It features all
the necessary functionality for
baseband modulation and
demodulation of I and Q signals. It has a two stage
integrated limiting IF amplifier with 84dB of gain and a built in
Receive Signal Strength Indicator (RSSI). “I” and “Q”
Baseband antialiasing and shaping filters are integrated in
this design. In addition, these filters are continuously tunable
over a ±10% frequency range via one external resistor. The
modulator channel receives digital I and Q data for
processing. To achieve broadband operation, the Local
Oscillator frequency input is required to be twice the desired
frequency of modulation/demodulation. A selectable
buffered divide by 2 LO output and a stable reference
voltage is provided for convenience of the user. The device is
housed in a thin 80 lead TQFP package well suited for
PCMCIA board applications.
Ordering Information
TEMP.
PART NUMBER RANGE (oC) PACKAGE
PKG. NO.
HFA3726IN
-40 to 85 80 Ld TQFP Q80.14x14
HFA3726IN96
-40 to 85 80 Ld TQFP Tape and Reel
Simplified Block Diagram
Features
• Integrates all IF Transmit and Receive Functions
• Broad Frequency Range . . . . . . . . . . . 10MHz to 400MHz
• 5th Order Low Pass Filter. . . . . . . . . . . . . . . . . . . .7.7MHz
• 400MHz Limiting IF Gain Strip with RSSI. . . . . . . . . .84dB
• Low LO Drive Level . . . . . . . . . . . . . . . . . . . . . . . -15dBm
• Fast Transmit-Receive Switching . . . . . . . . . . . . . . . . . 1µs
• Power Management/Standby Mode
• Single Supply 2.7V to 5.5V Operation
Applications
• Systems Targeting IEEE 802.11 Standard
• TDD Quadrature-Modulated Communication Systems
• Wireless Local Area Networks
• PCMCIA Wireless Transceivers
• ISM Systems
• TDMA Packet Protocol Radios
• PCS/Wireless PBX
• Wireless Local Loop
LIM1_IN
RSSI1
RSSI2
IF
MOD_LO_IN
MOD_LO_OUT
LO_GND
MOD_TX_IF_OUT
2V
REF
IF
÷ 2 0o/90o
I
M
U
X
M
U
X
Q
∑
LPF_RXI_OUT
LPF_RXQ _OUT
LPF_TXI_IN
LPF_TXQ_IN
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Copyright © Intersil Corporation 1999
PRISM® is a registered trademark of Intersil Corporation. PRISM logo is a trademark of Intersil Corporation.
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Pages | Pages 21 | ||
Télécharger | [ HFA3726 ] |
No | Description détaillée | Fabricant |
HFA3724 | 400MHz Quadrature IF Modulator/Demodulator | Intersil Corporation |
HFA3724IN | 400MHz Quadrature IF Modulator/Demodulator | Intersil Corporation |
HFA3724IN96 | 400MHz Quadrature IF Modulator/Demodulator | Intersil Corporation |
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