HFA3665 Datasheet, PDF (1/8 Pages) Intersil Corporation – CDMA/AMPS Downconverter with AGC Capability

TM
PRELIMINARY
May 1999
NO
Call
CRoeErnOCetmrOBaaSMliOAlM:[e-mail]4o2Em-N7T747
HFA3665
CDMA/AMPS Downconverter with AGC Capability
Features
Description
• RF Frequency Range . . . . . . . . . . . . 869MHz to 895MHz
• IF Operation . . . . . . . . . . . . . . . . . . . . 10MHz to 100MHz
• LNA Gain. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16dB
• LNA NF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.3dB
• Mixer Gain. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16dB
• Mixer NF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11dB
• Single Supply Battery Operation . . . . . . . . 2.7V to 3.3V
• Power Enable/Disable Control
• PIN Diode Attenuator DC Control
Applications
• IS95A CDMA/AMPS Dual Mode Handsets
• Wideband CDMA Handsets
• CDMA/TDMA Packet Protocol Radios
• Full Duplex Transceivers
• Portable Battery Powered Equipment
The HFA3665 is a monolithic bipo-
lar downconverter for CDMA/AMPS
cellular applications. Manufactured
in the Intersil UHF1X process, the
device consists of a low noise cascode amplifier, a double
balanced downconversion mixer and a pair of linearized and
temperature compensated PIN diode biasing current
sources for external RF AGC applications. In addition, the
device offers two independent and selectable differential
mixer IF output ports to be used with dual mode IF filters and
requires low drive levels from the local oscillator. The
HFA3665 is one of the four chips in the PRISM™ chip set
and is housed in a small outline 28 lead SSOP package ide-
ally suited for cellular handset applications.
Ordering Information
PART NUMBER
HFA3665IA
HFA3665IA96
TEMP.
RANGE (^oC)
-40 to 85
-40 to 85
PACKAGE
28 Ld SSOP
Tape and Reel
PKG.
NO.
M28.15
Pinout
HFA3665
(SSOP)
TOP VIEW
V_CC 1
AGC_CTRL 2
PIN_O_IBIAS1 3
GND 4
LNA_OUT 5
LNA_OUT 6
GND 7
GND 8
LNA_IN 9
PIN_O_IBIAS2 10
PIN_I_GND 11
RX_PE 12
R_REF 13
BIAS_GND 14
28 MIX_V_CC
27 SEL
26 MIX_V_CC
25 _{MIX_IND}
24 _{RF_IN}
23 RF_RET
22 MIX_GND
21 LO_RET
20 LO_IN
19 CDMA_OUT-
18 CDMA_OUT+
17 FM_OUT-
16 _{FM_OUT+}
15 BIAS_V_CC
Block Diagram
LNA_OUT
RF_IN
LNA_IN
LNA
PIN_O_IBIAS1
PIN_O_IBIAS2
C
T
R
L
BIAS
RX_PE
AGC_CTRL
LO_IN
CDMA_OUT-
CDMA_OUT+
SW
SEL
FM_OUT-
FM_OUT+
PRISM™ and the PRISM™ logo are trademarks of Intersil Corporation.
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright © Intersil Corporation 1999
1
File Number 4301.5