HFA3767 Datasheet, PDF (1/6 Pages) Intersil Corporation – 130MHz CDMA/AMPS Quadrature Modulator and AGC

®
PRELIMINARY
Data Sheet
February 1998
HFA3767
FN4298.3
130MHz CDMA/AMPS Quadrature
Modulator and AGC
The HFA3767 is a monolithic bipolar
quadrature modulator with gain control
for CDMA/AMPS cellular applications.
An upconverter quadrature mixer and
an output gain control stage with better
than 70dB of dynamic range are integrated in the design. A
local oscillator input requires low drive levels and a divide by
two phase shifter with duty cycle compensation achieves
excellent phase and amplitude balance properties. The
HFA3767 is one of the four chips in the PRISM™ chip set
and is housed in a 20 lead SSOP package ideally suited to
cellular handset applications.
Ordering Information
TEMP.
PART NUMBER RANGE (^oC)
PACKAGE
PKG. NO.
HFA3767IA
-40 to 85 20 Ld SSOP M20.15
HFA3767IA96
-40 to 85 Tape and Reel
Simplified Block Diagram
TXI
IF LO
TXQ
÷2 0/90^o
∑
BIAS
NETWORK
IF
OUTPUT
TX_PE
AGC_CTRL
Features
• I/Q Amplitude and Phase Balance . . . . . . . . . . . 0.5dB, 2^o
• 130MHz AGC Amplifier/Attenuator range . . . . . . . .>70dB
• Low LO Drive Level . . . . . . . . . . . . . . . . . . . . . . . .-10dBm
• Power Enable/Disable Control
• Single Supply Battery Operation . . . . . . . . . . . 2.7 to 3.3V
Applications
• IS95A CDMA/AMPS Dual Mode Handsets
• Wideband CDMA Handsets
• Full Duplex Transceivers
• CDMA/TDMA Packet Protocol Radios
• Portable Battery Powered Equipment
Pinout
HFA3767
(SSOP)
TOP VIEW
TX_PE 1
GND 2
TXI+ 3
TXI- 4
NC 5
TXQ- 6
TXQ+ 7
MIX_GND 8
DPS_GND 9
DPS_V_CC 10
20 V_CC
19 AGC_CTRL
18 GC
17 AGC_V_CC
16 TX_IF-
15 TX_IF+
14 AGC_GND
13 CAP
12 LO_IN
11 LO_GND
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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Copyright © Intersil Americas Inc. 2002. All Rights Reserved
PRISM® is a registered trademark of Intersil Americas Inc. PRISM and design is a trademark of Intersil Americas Inc.