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HFA3763IN

Description
TELECOM, CELLULAR, RF AND BASEBAND CIRCUIT, PQFP80
Categorysemiconductor    Analog mixed-signal IC   
File Size76KB,10 Pages
ManufacturerIntersil ( Renesas )
Websitehttp://www.intersil.com/cda/home/
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HFA3763IN Overview

TELECOM, CELLULAR, RF AND BASEBAND CIRCUIT, PQFP80

HFA3763
Data Sheet
June 1999
File Number
4237.4
400MHz Quadrature Modulator and AGC
The HFA3763 is a highly integrated
baseband converter for quadrature
modulation applications. The HFA3763
400MHz quadrature modulator and
AGC 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
modulation of I and Q signals. An output AGC and Baseband
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. The
modulator channel receives digital or analog 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. A selectable buffered divide by 2
LO output and a stable reference voltage are provided for
convenience of the user.
Features
• Integrates all IF Transmit Functions
• Broad Frequency Range . . . . . . . . . . . 10MHz to 400MHz
• I/Q Amplitude and Phase Balance . . . . . . . . . . . 0.2dB, 2
o
• 5th Order Programmable
Low Pass Filter. . . . . . . . . . . . . . . . . . . 2.2MHz - 17.6MHz
• 400MHz Output AGC Amplifier/Attenuator . . . . . . . .45dB
• Selectable Digital or Analog TX Baseband Inputs
• Low LO Drive Level . . . . . . . . . . . . . . . . . . . . . . . -15dBm
• Fast Transmit-on Switching . . . . . . . . . . . . . . . . . . . . . 1µs
• Power Management/Standby Mode
• Single Supply 2.7V to 5.5V Operation
Applications
• Wireless Local Loop Systems
• Wireless Local Area Networks
• PCMCIA Wireless Duplex Transceivers
Ordering Information
PART NUMBER
HFA3763IN
TEMP.
RANGE (
o
C)
-40 to 85
PACKAGE
80 Ld TQFP
PKG. NO.
Q80.14x14
• ISM Systems
• TDMA Packet Protocol Radios
• PCS/Wireless PBX
Simplified Block Diagram
LPF_TUNE_1
LPF_TUNE_0
LPF_SEL0
LPF_SEL1
2V
REF
0
o
/90
o
MOD_LO_IN
2V REF
MOD_LO_OUT
LO_GND
÷
2
LPF_TXI_IN
IF_OUT
I
LPF_TXQ_IN
Q
IF_AGC_IN
MOD_TX_IF_OUT
MOD_TX_Q
AGC_CTRL
LPF_TX_Q
TX D OR A
MOD_TX_I
LPF_TX_I
4-1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207
|
Copyright
©
Intersil Corporation 1999
PRISM® is a registered trademark of Intersil Corporation. PRISM logo is a trademark of Intersil Corporation.

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