4-1
TM
P R E L I M I N A R Y
HFA3661
2.0GHz to 2.7GHz DownConverter
The HFA3661 is a monolithic bipolar
device for down conversion applications
in the 2.0GHz to 2.7GHz range.
Manufactured in the Intersil UHF1X
process, the device consists of a low
noise amplifier and down conversion mixer. An energy
saving power enable control feature assures isolation
between transmit and receive channels for TDMA and/or half
duplex systems. The device is designed for a high Output
IP3, while maintaining low current and 5.5V to 2.7V supply
operation. It requires low drive levels from the local oscillator
and is housed in a small outline 20 lead SSOP package
ideally suited for PCMCIA card applications.
Pinout
HFA3661
(SSOP)
TOP VIEW
Features
RF Frequency Range . . . . . . . . . . . . . . 2.0GHz to 2.7GHz
IF Operation . . . . . . . . . . . . . . . . . . . . 10MHz to 250MHz
High Conversion Gain
2.0GHz . . . . . . . . . . . . . . . . . 40dB
2.7GHz . . . . . . . . . . . . . . . . . 36dB
High Output IP3 . . . . . . . . . . . . . . . . . . . . . . . . . . . 11dBm
Single Supply Battery Operation . . . . . . . . . 2.7V to 5.5V
Power Enable Control
LNA Bypass Control
Applications
Wireless Local Loop Systems
PCMCIA Wireless Transceiver
Wireless Local Area Network Modems
CDMA/TDMA Packet Protocol Radios
Full Duplex Transceivers
Portable Battery Powered Equipment
Block Diagram
Ordering Information
PART NUMBER
TEMP.
RANGE (
o
C)
PACKAGE
PKG.
NO.
HFA3661IA
-40 to 85
20 Ld SSOP
M20.15
HFA3661IA96
-40 to 85
Tape and Reel
20
19
18
17
16
15
14
13
12
11
1
2
3
4
5
6
7
8
9
10
LNA_PD
RXM_V
CC
LO_BY
LO_IN
BYP_CAP1
IF_OUT
BYP_CAP2
GND
LNA_V
CC
GND
LNA_OUT
GND
LNA_IN
RXM_V
CC
RX_PE
GND
GND
RXM_RF
GND
LNA_V
CC
POWER CONTROL TRUTH TABLE
STATE
LNA_PD
RCV_PE
Power Down Mode
(LNA, Mixer, and IF Buffer are Power
Down)
High or Low
Low
Receive Mode
(Mixer Active, LNA Active)
Low
High
Attenuated Receive Mode
(LNA Power Down used for RF Signal
Attenuation)
High
High
NOTE:
LNA_PD and RCV_PE are floating pins.
LO_BY
LNA_IN
LNA_OUT
RXM_RF
LO_IN
BIAS NETWORK
LNA
RXM
RX_PE
IF_OUT
LNA_PD
Data Sheet
February 1999
File Number
4240.2
[ /Title
(HFA3
661)
/Sub-
ject
(2.0G
Hz to
2.7GH
z
Down-
Con-
verter)
/Autho
r ()
/Key-
words
(2.0G
Hz to
2.7GH
z
Down-
Con-
verter,
Inter-
sil
Corpo-
ration,
semi-
con-
ductor,
PRIS
M,
Wire-
less
Com-
muni-
cations
, RF,
Radio
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.
4-2
Typical Application Diagram
Pin Descriptions
PIN NO.
NAME
DESCRIPTION
1
LNA_V
CC
Low Noise Amplifier Positive Power Supply (1 of 2)
2
GND
Low Noise Amplifier Ground
3
LNA_OUT
Low Noise Amplifier RF Output
4
GND
Low Noise Amplifier Ground
5
LNA_V
CC
Low Noise Amplifier Positive Power Supply (2 of 2)
6
GND
Low Noise Amplifier Ground
7
LNA_IN
Low Noise Amplifier RF Input
8
GND
Low Noise Amplifier Ground
9
RXM_V
CC
Receive Mixer Positive Power Supply
10
RX_PE
Receive Channel Power Enable (LNA, Mixer, and IF Buffer)
11
BYP_CAP2
Bypass Capacitor
12
IF_OUT
Receive Mixer Buffered IF Output
13
BYP_CAP1
Bypass Capacitor
14
GND
IF Buffer Ground
15
LO_IN
Receive Mixer Local Oscillator Input
16
LO_BY
Receive Mixer Local Oscillator Bypass
17
RXM_V
CC
Receive Mixer Positive Power Supply
18
RXM_RF
Receive Mixer RF Input
19
GND
Receive Mixer Ground
20
LNA_PD
Low Noise Amplifier Power Down (Bypass mode used for RF Signal Attenuation)
SYNTHESIZER
LNA
BPF
RF/IF
CONVERTER
IF AGC
LPF
QMODEM
IF/RF
CONVERTER
BASEBAND
FILTER
SYNTHESIZER
HFA3424/21
HFA3661
HFA3524
HFA3663 (File #4241)
HFA3925
HFA3761 (File #4236)
HFA3763
LPF
AGC
LPF
QMODEM
LPF
D/A
PA
BPF
HFA3664 (File #4242)
(File #4240)
(File #4062)
HFA3524
(File #4062)
(File #4132)
(File #4131)
(File #4237)
PRISM FULL DUPLEX RADIO
CHIP SET, FILE #4238
A/D
PRISM FULL DUPLEX CHIP SET
AGC
LNA
IF LO1
IF LO2
RF LO1
RF LO2
D
U
P
L
E
X
E
R
OPTIONAL WHEN IN
ANALOG MODE
HFA3661
4-3
Absolute Maximum Ratings
Thermal Information
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to 6.0V
Voltage on Any Other Pin. . . . . . . . . . . . . . . . . . . . -0.3 to V
CC
0.3V
Operating Conditions
Supply Voltage Range . . . . . . . . . . . . . . . . . . . . . . . . . 2.7V to 5.5V
Thermal Resistance (Typical, Note 1)
JA
(
o
C/W)
20 Lead Plastic SSOP . . . . . . . . . . . . . . . . . . . . . . .
110
Package Power Dissipation at 70
o
C
20 Lead Plastic SSOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.7W
Maximum Junction Temperature (Plastic Package) . . . . . . . . 150
o
C
Maximum Temperature Range. . . . . . . . . . . . . . -40
o
C
T
A
85
o
C
Maximum Storage Temperature Range . . . . . . -65
o
C
T
A
150
o
C
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 300
o
C
(At Lead Tips Only)
CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTE:
1.
JA
is measured with the component mounted on an evaluation PC board in free air.
Electrical Specifications
V
CC
= 5.5V, Z
O
= 50
, Unless Otherwise Specified
PARAMETER
SYMBOL
(NOTE 2)
TEST
LEVEL
TEMP
(
o
C)
MIN
TYP
MAX
UNITS
CASCADED CHARACTERISTICS (External Reactive Match on IF_OUT to 50
, -3dB Loss RF Image Filter, LO_IN = 2080MHz/-3dBm,
RF = 2150MHz/-30dBm, Receive Mode)
Cascaded Power Gain
2.0GHz
CRX_PG2.0
B
Full
-
40
-
dB
2.7GHz
CRX_PG2.7
B
Full
-
36
-
dB
Cascaded OIP3
(RF = 2300.1MHz,
2299.9MHz/-30dBm)
2.0GHz
CRX_IP3_2.0
B
Full
-
14.9
-
dBm
2.7GHz
CRX_IP3_2.7
B
Full
-
11.0
-
dBm
Cascaded Noise Figure at 2.4GHz
CRX_NF2.4
B
Full
-
4.4
-
dB
Cascaded Output 1dB
Compression
2.0GHz
CRX_P1D2.0
B
Full
-
2.8
-
dBm
2.7GHz
CRX_P1D2.7
B
Full
-
3.8
-
dBm
LO INPUT CHARACTERISTICS (LO_IN = 2080MHz/-3dBm, all unused inputs and outputs are terminated into 50
)
LO Input Frequency Range
LO_f
B
Full
1600
-
2690
MHz
LO Input Drive Level
LO_dr
B
Full
-8
-3
+3
dBm
LO Input VSWR
LO_SWR
A
Full
-
1.5:1
2.0:1
-
LO Input Return Loss
LO_IRL
A
Full
9.5
14
-
dB
LOW NOISE AMPLIFIER (LNA) CHARACTERISTICS (LNA_IN = 2300MHz/-30dBm)
LNA Frequency Range
LNA_f
B
Full
2.0
-
2.7
GHz
LNA Noise Figure at 2.4GHz
LNA_NF2.4
B
25
-
3.3
4.0
dB
LNA Power Gain
2.0GHz
LNA_PG2.0
A
25
19
22
-
dB
2.7GHz
LNA_PG2.7
A
25
13
16
-
dB
LNA Reverse Isolation
LNA_ISO
B
25
-
30
-
dB
LNA OIP3 at 2300.1MHz,
2299.9MHz/-30dBm
2.0GHz
LNA_IP3_2.0
A
25
9
16
-
dBm
2.7GHz
LNA_IP3_2.7
A
25
10.5
16
-
dBm
LNA Output 1dB
Compression
2.0GHz
LNA_P1D_2.0
B
25
-
0
-
dBm
2.7GHz
LNA_P1D_2.7
B
25
-
2
-
dBm
LNA Input VSWR
2.0GHz
LNA_ISWR_2
A
25
-
1.1:1
2.0:1
-
2.7GHz
LNA_ISWR_7
A
25
-
1.4:1
2.0:1
-
LNA Input Return Loss
2.0GHz
LNA_IRL_2.0
A
25
9.5
15.6
-
dB
2.7GHz
LNA_IRL_2.7
A
25
9.5
26.4
-
dB
HFA3661
4-4
LNA Output VSWR
2.0GHz
LNA_OSWR_2
A
25
-
1.4:1
2.0:1
-
2.7GHz
LNA_OSWR_7
A
25
-
1.6:1
2.0:1
-
LNA Output Return Loss
2.0GHz
LNA_ORL_2.0
A
25
9.5
15.6
-
dB
2.7GHz
LNA_ORL_2.7
A
25
9.5
12.7
-
dB
LNA Max Power In (Functional)
LNA_MP
B
25
-4
-
-
dBm
LNA Power Down Attenuation
LNA_PD
B
25
-
36
-
dB
RECEIVE MIXER CHARACTERISTICS (LO_IN = 2230MHz/-3dBm, RXM_RF = 2300MHz/-30dBm, IF_OUT load = 50
with external
matching network at 70MHz)
Rx Mixer RF Frequency Range
RXM_RFf
B
Full
2.0
-
2.7
GHz
Rx Mixer IF Frequency Range
RXM_IFf
B
Full
10
-
250
MHz
Rx Mixer SSB Noise Figure at 2.4GHz
RXM_NF
B
25
-
13
15.5
dB
Rx Mixer Power Conversion Gain
2.0GHz
RXM_PG_2.0
A
25
20
22
-
dB
2.7GHz
RXM_PG_2.7
A
25
19
23
-
dB
MixerOIP3 at
2300.1MHz,
2299.9MHz/-30dBm
2.0GHz
RXM_IP3_2.0
A
25
11
15
-
dBm
2.7GHz
RXM_IP3_2.7
A
25
8
11
-
dBm
Rx Mixer IF Output 1dB
Compression
2.0GHz
RXM_P1D2.0
B
25
-
4
-
dBm
2.7GHz
RXM_P1D2.7
B
25
-
3
-
dBm
Rx Mixer IF_OUT Resistance (IF = 70MHz)
RXM_ROUT
B
25
-
67
-
Rx Mixer IF_OUT Capacitance (IF = 70MHz)
RXM_COUT
B
25
-
1.1
-
pF
Rx Mixer LO to RF Isolation
RXM_LOR
B
25
-
22
-
dB
Rx Amplifier Max Power Input (Functional)
RXM_MP
B
25
12
-
-
dBm
POWER SUPPLY AND LOGIC CHARACTERISTICS
Voltage Supply Range
V
CC
B
Full
2.7
-
5.5
V
Receive Mode Supply Current
RCV_I
CC
A
25
-
48
65
mA
RCV_I
CC
B
Full
-
58
75
mA
Attenuated Receive Mode Supply Current
PE = V
CC
, LNA_PD = V
CC
ATTN_I
CC
B
25
-
19
23
mA
ATTN_I
CC
B
Full
-
19
25
mA
Power Down Mode Supply Current
LNA_PD = GND
PD_I
CC
A
25
-
1
100
A
PD_I
CC
B
Full
-
1
100
A
Logic Input Low Level
V
IL
A
Full
-0.2
-
0.8
V
Logic Input High Level
V
IH
A
Full
2.4
-
V
CC
V
Logic Low Input Bias Current (0V)
I
B
_LO
B
25
-
-
5
A
Logic High Input Bias Current (5.5V)
I
B
_HI
B
25
-
-
50
A
LNA_PD Power Enable Time
LNA_Et
B
Full
-
-
10
s
LNA_PD Power Disable Time
LNA_Dt
B
Full
-
-
10
s
RX_PE Power Enable Time
PEt
B
Full
-
-
10
s
RX_PE Power Disable Time
PDt
B
Full
-
-
10
s
NOTE:
2. Test Level A = 100% production tested, B = Typical or Limit based on characterization data, C = Design information, goal or condition.
Electrical Specifications
V
CC
= 5.5V, Z
O
= 50
, Unless Otherwise Specified (Continued)
PARAMETER
SYMBOL
(NOTE 2)
TEST
LEVEL
TEMP
(
o
C)
MIN
TYP
MAX
UNITS
HFA3661
4-5
Typical Application Circuit
20
19
18
17
16
15
14
13
12
11
1
2
3
4
5
6
7
8
9
10
LNA_PD
LO_BY
LO_IN
IF_OUT
GND
LNA_V
CC
GND
LNA_OUT
GND
LNA_IN
RXM_V
CC
RX_PE
GND
GND
RXM_RF
GND
LNA_V
CC
LNA
RXM
BIAS
C6
270pF
C3
270pF
RECEIVE
ENABLE
C1
2.2
F
C2
2200pF
C14
1000pF
C9
100pF
RF INPUT
2300MHz
50
C7
7pF
C11
22pF
C12
7pF
LO INPUT
2230MHz
50
L1
C15
IF OUTPUT
70MHz
50
C10
270pF
L2
C5
100pF
AMPLIFIER
DISABLE
C8
270pF
BYP_CAP1 C13
1000pF
RXM_V
CC
V
CC
-3dB/50
BPF
IMAGE REJECT
FILTER
200pF
270pF
L3
1000pF
27pF
C16
C4
C17
IF MATCH
L1
L2
C15
FREQ = 70MHz 150nH 120nH 42-46pF
MIXER INP MATCH
L3
C9
FREQ = 2 - 2.7GHz
3.3nH
4.7pF
BYP_CAP2
L3, C9 OPTIMUM MATCH TO 2.4GHz
HFA3661
PDF 
ZIP